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Privacy Policy



BACKGROUND:
MetDesk Limited understands that your privacy is important to you and that you care about how your personal data is used. We respect and value the privacy of everyone who visits this website, www.wxcharts.eu (“Our Site”) and will only collect and use personal data in ways that are described here, and in a way that is consistent with our obligations and your rights under the law.
Please read this Privacy Policy carefully and ensure that you understand it. Your acceptance of this Privacy Policy is deemed to occur upon your first use of Our Site. If you do not accept and agree with this Privacy Policy, you must stop using Our Site immediately.

Definitions and Interpretation
In this Policy the following terms shall have the following meanings:
"Account" - means an account required to access and/or use certain areas and features of Our Site;
"Cookie" - means a small text file placed on your computer or device by Our Site when you visit certain parts of Our Site and/or when you use certain features of Our Site. Details of the Cookies used by Our Site are set out in Part 14, below; and
"Cookie Law" - means the relevant parts of the Privacy and Electronic Communications (EC Directive) Regulations 2003;

Information About Us
Our Site is owned and operated by MetDesk Limited, a limited company registered in England under company number 08282087. Registered address: 4 Station Approach, Wendover, Buckinghamshire, HP22 6BN, UK. Address: 4 Station Approach, Wendover, Buckinghamshire, HP22 6BN, UK. VAT number: 151303164. Data Protection Officer: Giles Ripley. Email address: GDPR@metdesk.com. Telephone number: 01296 623888. Postal Address: 4 Station Approach, Wendover, Buckinghamshire, HP22 6BN, UK.

What Does This Policy Cover?
This Privacy Policy applies only to your use of Our Site. Our Site may contain links to other websites. Please note that we have no control over how your data is collected, stored, or used by other websites and we advise you to check the privacy policies of any such websites before providing any data to them.

What is Personal Data? Personal data is defined by the General Data Protection Regulation (EU Regulation 2016/679) (the “GDPR”) as ‘any information relating to an identifiable person who can be directly or indirectly identified in particular by reference to an identifier’. Personal data is, in simpler terms, any information about you that enables you to be identified. Personal data covers obvious information such as your name and contact details, but it also covers less obvious information such as identification numbers, electronic location data, and other online identifiers.

What Are My Rights?
Under the GDPR, you have the following rights, which we will always work to uphold:
- The right to be informed about our collection and use of your personal data. This Privacy Policy should tell you everything you need to know, but you can always contact us to find out more or to ask any questions using the details in Part 15.
- The right to access the personal data we hold about you. Part 13 will tell you how to do this.
- The right to have your personal data rectified if any of your personal data held by us is inaccurate or incomplete. Please contact us using the details in Part 15 to find out more.
- The right to be forgotten, i.e. the right to ask us to delete or otherwise dispose of any of your personal data that we have. Please contact us using the details in Part 15 to find out more.
- The right to restrict (i.e. prevent) the processing of your personal data.
- The right to object to us using your personal data for a particular purpose or purposes.
- The right to data portability. This means that, if you have provided personal data to us directly, we are using it with your consent or for the performance of a contract, and that data is processed using automated means, you can ask us for a copy of that personal data to re-use with another service or business in many cases.
- Rights relating to automated decision-making and profiling. We do not use your personal data in this way.
For more information about our use of your personal data or exercising your rights as outlined above, please contact us using the details provided in Part 15.
Further information about your rights can also be obtained from the Information Commissioner’s Office or your local Citizens Advice Bureau.
If you have any cause for complaint about our use of your personal data, you have the right to lodge a complaint with the Information Commissioner’s Office.

What Data Do We Collect?
Depending upon your use of Our Site, we may collect some or all of the following personal and non-personal data (please also see Part 14 on our use of Cookies and similar technologies):
- Name;
- Date of birth;
- Gender;
- Address;
- Email address;
- Telephone number;
- Business name;
- Job title;
- Profession;
- Payment information;
- IP address;
- Web browser type and version;
- Operating system;
- A list of URLs starting with a referring site, your activity on Our Site, and the site you exit to.

How Do You Use My Personal Data?
Under the GDPR, we must always have a lawful basis for using personal data. This may be because the data is necessary for our performance of a contract with you, because you have consented to our use of your personal data, or because it is in our legitimate business interests to use it. Your personal data may be used for the following purposes:
- Providing and managing your Account;
- Providing and managing your access to Our Site;
- Personalising and tailoring your experience on Our Site;
- Supplying our services to you. Your personal details are required in order for us to enter into a contract with you.
- Personalising and tailoring our services for you.
- Communicating with you. This may include responding to emails or calls from you.
- Supplying you with information by email that you have opted-in to (you may unsubscribe or opt-out at any time by emailing us).
With your permission and/or where permitted by law, we may also use your personal data for marketing purposes, which may include contacting you by email and/or telephone and/or text message and/or post with information, news, and offers on our services. You will not be sent any unlawful marketing or spam. We will always work to fully protect your rights and comply with our obligations under the GDPR and the Privacy and Electronic Communications (EC Directive) Regulations 2003, and you will always have the opportunity to opt-out.

How Long Will You Keep My Personal Data?
We will not keep your personal data for any longer than is necessary in light of the reason(s) for which it was first collected. Notwithstanding the other provisions of this Section, we may retain your personal data where such retention is necessary for compliance with a legal obligation to which we are subject, or in order to protect your vital interests or the vital interests of another natural person.

How and Where Do You Store or Transfer My Personal Data?
We will only store or transfer your personal data within the European Economic Area (the “EEA”). The EEA consists of all EU member states, plus Norway, Iceland, and Liechtenstein. This means that your personal data will be fully protected under the GDPR or to equivalent standards by law.
The security of your personal data is essential to us, and to protect your data, we take a number of important measures, including the following: - Storing personal data on secure servers, personal computers and mobile devices, and in secure manual record keeping systems.
- Passwords are secured using encryption technology.

Do You Share My Personal Data?
We will not share any of your personal data with any third parties for any purposes, subject to one important exception.
In some limited circumstances, we may be legally required to share certain personal data, which might include yours, if we are involved in legal proceedings or complying with legal obligations, a court order, or the instructions of a government authority.

How Can I Control My Personal Data?
- In addition to your rights under the GDPR, set out in Part 5, when you submit personal data via Our Site, you may be given options to restrict our use of your personal data. In particular, we aim to give you strong controls on our use of your data for direct marketing purposes (including the ability to opt-out of receiving emails from us which you may do by unsubscribing using the links provided in our emails and at the point of providing your details and by managing your Account).
- You may also wish to sign up to one or more of the preference services operating in the UK: The Telephone Preference Service (“the TPS”), the Corporate Telephone Preference Service (“the CTPS”), and the Mailing Preference Service (“the MPS”). These may help to prevent you receiving unsolicited marketing. Please note, however, that these services will not prevent you from receiving marketing communications that you have consented to receiving.

Can I Withhold Information?
You may access certain areas of Our Site without providing any personal data at all. However, to use all features and functions available on Our Site you may be required to submit or allow for the collection of certain data.
You may restrict our use of Cookies. For more information, see Part 14.

How Can I Access My Personal Data?
If you want to know what personal data we have about you, you can ask us for details of that personal data and for a copy of it (where any such personal data is held). This is known as a “subject access request”.
All subject access requests should be made in writing and sent to the email or postal addresses shown in Part 15. To make this as easy as possible for you, a Subject Access Request Form is available for you to use. You do not have to use this form, but it is the easiest way to tell us everything we need to know to respond to your request as quickly as possible.
There is not normally any charge for a subject access request. If your request is ‘manifestly unfounded or excessive’ (for example, if you make repetitive requests) a fee may be charged to cover our administrative costs in responding.
We will respond to your subject access request within one month of receiving it. Normally, we aim to provide a complete response, including a copy of your personal data within that time. In some cases, however, particularly if your request is more complex, more time may be required up to a maximum of three months from the date we receive your request. You will be kept fully informed of our progress.

How Do You Use Cookies?
Our Site may place and access certain first-party Cookies on your computer or device. First-party Cookies are those placed directly by us and are used only by us. We use Cookies to facilitate and improve your experience of Our Site and to provide and improve our services. We have carefully chosen these Cookies and have taken steps to ensure that your privacy and personal data is protected and respected at all times.
All Cookies used by and on Our Site are used in accordance with current Cookie Law.
Before Cookies are placed on your computer or device, you will be shown a cookie banner requesting your consent to set those Cookies. By giving your consent to the placing of Cookies you are enabling us to provide the best possible experience and service to you. You may, if you wish, deny consent to the placing of Cookies; however certain features of Our Site may not function fully or as intended.
Certain features of Our Site depend on Cookies to function. Cookie Law deems these Cookies to be “strictly necessary”. These Cookies are shown in the table below. Your consent will not be sought to place these Cookies, but it is still important that you are aware of them. You may still block these Cookies by changing your internet browser’s settings as detailed below, but please be aware that Our Site may not work properly if you do so. We have taken great care to ensure that your privacy is not at risk by allowing them.
In addition to the controls that we provide, you can choose to enable or disable Cookies in your internet browser. Most internet browsers also enable you to choose whether you wish to disable all Cookies or only third-party Cookies. By default, most internet browsers accept Cookies, but this can be changed. For further details, please consult the help menu in your internet browser or the documentation that came with your device. You can choose to delete Cookies on your computer or device at any time, however you may lose any information that enables you to access Our Site more quickly and efficiently including, but not limited to, login and personalisation settings.
It is recommended that you keep your internet browser and operating system up-to-date and that you consult the help and guidance provided by the developer of your internet browser and manufacturer of your computer or device if you are unsure about adjusting your privacy settings.


How Do I Contact You?
To contact us about anything to do with your personal data and data protection, including to make a subject access request, please use the following details:
Email address: GDPR@metdesk.com.
Telephone number: 01296 623888.
Postal Address: 4 Station Approach, Wendover, Buckinghamshire, HP22 6BN.


Changes to this Privacy Policy
We may change this Privacy Notice from time to time. This may be necessary, for example, if the law changes, or if we change our business in a way that affects personal data protection. Any changes will be immediately posted on Our Site and you will be deemed to have accepted the terms of the Privacy Policy on your first use of Our Site following the alterations. We recommend that you check this page regularly to keep up-to-date.

Terms of Use


By accessing or using wxcharts.eu (the "site") you agree to adhere to the following terms:

Use of Site Content

Sharing of site content (maps, plots) via social media, forums, email etc is permitted and in fact encouraged for all non-commercial purposes - providing that any watermarks are not removed/covered or full accreditation is provided by way of a link to wxcharts.eu.

Use of individual images on blogs or personal websites is allowed, as long as a link to wxcharts.eu is provided, and that clicking on the image also links to the site. Automated embedding of multiple images is prohibited - please contact wxcharts@metdesk.com for review if your use/plans may be in breach of these terms.

Commercial use of the site content is strictly prohibited. The site content should never be downloaded or copied for use in a product that is sold for profit. If you require weather maps, plots or data for your business, please get in touch via sales@metdesk.com

Commercial viewing of site is permitted at present, but this policy may be reviewed in future.

Information About Us

The site is owned and operated by MetDesk Limited, a limited company registered in England under company number 08282087.
Registered address: 4 Station Approach, Wendover, Buckinghamshire, HP22 6BN, UK.
Address: 4 Station Approach, Wendover, Buckinghamshire, HP22 6BN, UK.
VAT number: 151303164.
Data Protection Officer: Giles Ripley.
Email address: GDPR@metdesk.com.
Telephone number: 01296 623888.

Disclaimer

Any reliance you place on the information contained in the site is strictly at your own risk.

We are unable to guarantee access to the most up-to-date information on this service. The information available here should not be used for operational purposes.

THE USER ASSUMES ALL RISK AS TO THE USE OF THE DATA AND/OR INFORMATION CONNTAINED WITHIN THE SITE. THIS INFORMATION IS PROVIDED “AS IS” AND WITHOUT REPRESENTATIONS OR WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED. ALL REPRESENTATIONS AND WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL WXCHARTS.EU OR METDESK LIMITED BE LIABLE FOR DAMAGES, WHETHER DIRECT, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL, INCLUDING LOSS OF PROFITS.

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GDPS 0.24° Global ?
ICON-EU 0.0625° Europe ?
ARPEGE 0.1° Europe ?
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AROME 0.01° W Europe ?
HARMONIE 2.5km Benelux ?
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GFS - Global Forecast System
- Issuing body - NOAA, USA
- Outputs on 0.25° x 0.25° global lat/lon grid
- Run 4 x daily at 00/06/12/18 UTC
- Data available out to 384 hours / 16 days
GEFS - Global Ensemble Forecast System
- Issuing body - NOAA, USA
- Outputs on 0.5° x 0.5° global lat/lon grid
- 20 ensemble members plus 1 control member
- Run 4 x daily at 00/06/12/18 UTC
- Data available out to 384 hours / 16 days
ECMWF HRES - High resolution Model
- Issuing body - ECMWF, Europe
- Outputs on 0.1° x 0.1° global lat/lon grid
- Run 2 x daily at 00/12 UTC
- Data available out to 240 hours / 10 days - NB Only WMO essential timesteps and variables available on wxcharts.eu at this time
ECMWF ENS - Ensemble forecast model
- Issuing body - ECMWF, Europe
- Outputs on 0.2° x 0.2° global lat/lon grid
- 50 ensemble members plus 1 control member
- Run 2 x daily at 00/12 UTC
- Data available out to 360 hours / 15 days - NB Only WMO essential timesteps and variables available on wxcharts.eu at this time
UKMO Global Unified Model
- Issuing body - UKMO, United Kingdom
- Run on a 10 km global grid - available here only at 2.5° x 2.5° resolution at this time
- Run 2 x daily at 00/12 UTC
- Data available for 72, 96 and 120 hour steps on wxcharts.eu at this time
CMC Global Deterministic Forecast System (GDPS)
- Issuing body - Canadian Meteorological Centre, Canada
- The GDPS is the CMC's operational model and is made using the Global Environmental Multiscale Model (GEM) integrated forecast and assimilation system
- Run on a 0.24° (25 km) global grid
- Run 2 x daily at 00/12 UTC
Data available at 3hr steps for most variables out to 10 days / 240 hours
ARPEGE - Action de Recherche Petite Echelle Grande Echelle
- Issuing body - Météo-France, France
- Developed in collaboration with ECMWF
- Outputs on 0.1° x 0.1° European lat/long grid
- European grid ranges from 20N to 70N, 32W to 42E
- Run 4 x daily at 00/06/12/18 UTC
- 00 and 12 UTC runs have data out to 102 hours. 06 UTC run goes to 60 hours, and 18 UTC run to 72 hours.
AROME - Application of Research to Operations at Mesoscale
- Issuing body - Météo-France, France
- Highest resolution output available at 0.01° x 0.01°, approximately 1.3km
- Grid centred on France, but also includes England, Wales, Ireland, Benelux, Germany, Alps, N Italy and N Spain
- Run 5 x daily at 00/03/06/12/18 UTC (03 UTC run not displayed on wxcharts.eu)
- 00 and 12 UTC runs have data out to 42 hours. 06 and 18 UTC runs goes to 36 hours.
HARMONIE - HIRLAM ALADIN Research on Mesoscale Operational NWP In Euromed
- Issuing body - KNMI, The Netherlands
- High resolution local grid 2.5 x 2.5 km centred on The Netherlands
- Run 4 x daily at 00/06/12/18 UTC
- Data available out to 48 hours / 2 days
HIRLAM - High Resolution Limited Area Model
- Issuing body - KNMI, The Netherlands
- European 0.1° x 0.1° lat/lon grid with bounds 35N to 62.5N, 11.5W to 30E
- Run 4 x daily at 00/06/12/18 UTC
- Data available out to 48 hours / 2 days
ICON-EU - Icosahedral Nonhydrostatic Model European Nest
- Issuing body - DWD, Germany
- Outputs to 0.0625° x 0.0625° European lat/lon grid with bounds 29.5N to 70.5N, 23.5W to 45E
- Run 8 x daily, available on wxcharts for 00/06/12/18 UTC runs
- Hourly data available out to 60 hours (data to 120 hours coming soon)
NAM - North American Model
- Issuing body - NOAA, USA
- 3km x 3km CONUS NEST
- Run 4 x daily at 00/06/12/18 UTC
- Data available out to 60 hours / 2.5 days
HRRR - High Resolution Rapid Refresh
- Issuing body - NOAA, USA
- 3km x 3km CONUS NEST
- Run every hour (only even hours dispalyed on wxcharts.eu at this time)
- Data available out to 18 hours
Gives an overview of the general weather pattern. Variables included: precipitation rate, precipitation type (snow and rain only), total cloud amount (%), 2 m temperature and MSLP.
Gives an overview of variables key for winter weather forecasting. Particular focus on precipitation types including: snow, rain graupel, and freezing rain (FrzR). Snow depth is also shown where snow accumulates.
Gives an overview of variables key for severe weather forecasting. Particular focus on CAPE (J/Kg) and Bulk Shear (kt) for small regions but 500 hPa Geopotential Height (dm) for broader regions.
Temperature at 2 m above ground level (AGL). Units in Celsius for Europe, Fahrenheit for North America.
Temperature at 2 m above ground level (AGL) with gridded values. Units in Celsius for Europe, Fahrenheit for North America.
The temperature at which water droplets would begin to condense at 2 m AGL. This varies with pressure and humidity.
The combined effect of wind at 10 m and temperature at 2 m on the human body. Units are quantified as an effective temperature in Celsius for Europe, Fahrenheit for North America.
The depth of water in a column of the atmosphere, if all the water in that column were precipitated as rain. Units in Milimetres for Europe, Inches for North America.
Maximum temperature at 2 m AGL in the 3/6/12 hour period leading to the hour selected. Units in Celsius for Europe, Fahrenheit for North America.
Minimum temperature at 2 m AGL in the 3/6/12 hour period leading to the hour selected. Units in Celsius for Europe, Fahrenheit for North America.
The air temperature at the sea/water surface. Units in Celsius.
The temperature at approximately 1.5 km / 5000 ft above sea level where the atmosphere is typically considered free from the surface. Useful for showing air mass characteristics. Units in Celsius.
The local spin of the atmosphere, related to angular momentum. We have positive(anticlockwise) vorticity, which is usually associated with cyclones in the Northern Hemisphere and negative (clockwise) vorticity, usually associated with anticyclones in the Northern Hemisphere.
The sustained wind speed at 10m AGL (averaged over 1 minute)
The sustained wind speed at 10m AGL (averaged over 1 minute)
The sustained wind speed at 10m AGL (averaged over 1 minute)
The maximum sustained wind speed at 10m AGL (averaged over 1 hour) that occured during the last hour
The maximum sustained wind speed at 10m AGL (averaged over 1 hour) that occured during the last hour
The maximum sustained wind speed at 10m AGL (averaged over 1 hour) that occured during the last hour
The sustained wind speed at 850 Hpa - approximately 1.5 km / 5000 ft above sea level
The sustained wind speed at 850 Hpa - approximately 1.5 km / 5000 ft above sea level
The sustained wind speed at 850 Hpa - approximately 1.5 km / 5000 ft above sea level
The peak instantaneous wind gust felt at the Earth’s surface.
The peak instantaneous wind gust felt at the Earth’s surface.
The peak instantaneous wind gust felt at the Earth’s surface.
Aggregated wind gusts from T+0. Shows the maximum wind gust expected spatially over time. Useful for gauging wind impact of features such as tropical cyclones and squall lines
Aggregated wind gusts from T+0. Shows the maximum wind gust expected spatially over time. Useful for gauging wind impact of features such as tropical cyclones and squall lines
Aggregated wind gusts from T+0. Shows the maximum wind gust expected spatially over time. Useful for gauging wind impact of features such as tropical cyclones and squall lines
Aggregated mean wind from T+0. Shows the maximum sustained wind expected spatially over time. Useful for gauging wind impact of features such as tropical cyclones and squall lines
Aggregated mean wind from T+0. Shows the maximum sustained wind expected spatially over time. Useful for gauging wind impact of features such as tropical cyclones and squall lines
Aggregated mean wind from T+0. Shows the maximum sustained wind expected spatially over time. Useful for gauging wind impact of features such as tropical cyclones and squall lines
The sustained wind speed at 300 Hpa. Typically around 9 km above sea level, this is where we can monitor the jetstream. The jetstream is a narrow ribbon of fast moving air which can help drive and develop weather systems.
Mean Sea Level Pressure. High pressure is usually associated with fine weather and low pressure is usually associated with unsettled weather.
Approximately 6 km above sea level, the 500 hPa geopotential height is useful for relating the mid-upper atmosphere processes to the surface.
Average precipitation rate for rain and snow.
Instantaneous precipitation rate regardless of precipitation type. Units of dBZ (decibel relative to Z) to give comparison to raw radar output.
For most models this shows the total depth of snow and includes melt and compacting processes. For Arome and Arpege models however, the snow depth charts only show accumulating depth of snow since T+0, and do not include melt or compaction processes.
Stands for ‘Convective Available Potential Energy’. CAPE is a measure of positive buoyancy in the atmosphere and is an indicator of atmospheric instability. Higher CAPE values are associated with thunderstorms and severe weather.
A measure for potential (cyclonic) rotating updrafts, calculated for the lowest 3 km of the atmosphere. Values of 250m**2/s**-2 and greater are considered large and favourable for rotating (supercell) thunderstorms.
The wind difference between 0 – 6 km AGL. Useful for determining if thunderstorms could be supercellular (rotating) or not. Typically 25-40 kt marks the transition from non-supercell to supercell thunderstorms.
A dimensionless index calculated using surface based CAPE, bulk shear and storm relative helicity. The higher the value, the more likely supercell formation given initial convective initiation takes place
Compares the predicted 2 m temperature to what we consider normal (a 30 year average from CFSR 1981-2010 climatology)
Compares the predicted temperature at approximately 1.5 km above sea level to what we consider normal (a 30 year average from CFSR 1981-2010 climatology). Useful for knowing if an air mass is cooler or warmer than normal.
The temperature in the Stratosphere around 30km above the earths surface. Used to monitor the position of the Polar Vortex which can have an influence on winter weather at the earths surface
The mean temperature from all ensemble members at approximately 1.5 km / 5000 ft above sea level - where the atmosphere is typically considered free from the surface. Useful for showing air mass characteristics. Units in Celsius.
Approximately 6 km above sea level, the 500 hPa geopotential height is useful for relating the mid-upper atmosphere processes to the surface.
Mean Sea Level Pressure. High pressure is usually associated with fine weather and low pressure is usually associated with unsettled weather.
Mean Sea Level Pressure. High pressure is usually associated with fine weather and low pressure is usually associated with unsettled weather.
Compares the predicted temperature at approximately 1.5 km above sea level to what we consider normal (a 30 year average from CFSR 1981-2010 climatology). Useful for knowing if an air mass is cooler or warmer than normal.
Shows 850 hPa at certain contour intervals from all ensemble members. The more the lines look like a mess of spaghetti, the more unpredictable the forecast
The tracks of low pressure centres (with colours representing MSLP depth) from each ensemble member. ECMWF tracks only show lows of Tropical origin, whereas GEFS tracks show all low centres with associated winds above 22kts
The tracks of low pressure centres (with colours representing maximum storm mean 10m winds) from each ensemble member. The closer the lines for a given storm, the more predictable the path.
The amount of rain (or water equivalent of melted snow) accumulated from the beginning of the forecast.
The amount of rain (or water equivalent of melted snow) accumulated in a 24 hour period leading to the hour selected.
A virtual Infra Red (IR) satellite image using the model infrared radiation emitted by the cloud tops, land or ocean surfaces.
A virtual Infra Red (IR) satellite image using the model infrared radiation emitted by the cloud tops, land or ocean surfaces.
A combination of the virtual radar and satellite images
The forecast low level / boundary layer clouds. Good to show an indication of possible fog / stratus formation.
Instantaneous precipitation rate regardless of precipitation type. Designed to mimic real-time radar images.
Compares the predicted temperature at approximately 30 km above sea level to what we consider normal (a 30 year average from CFSR 1981-2010 climatology). Useful for highlighting areas of stratospheric warming.
Compares the predicted geopontential height at 500 hPa to what we consider normal (a 30 year average from CFSR 1981-2010 climatology).
Shows 500 hPa geopotential height at certain contour intervals from all ensemble members. The background shading is the mean of all ensemble members. The more the lines look like a mess of spaghetti, the more unpredictable the forecast.
Compares the predicted mean seal level pressure to what we consider normal (a 30 year average from CFSR 1981-2010 climatology). Usefull for showing where high/low centres are unseasonably strong/weak.
Shows MSLP at certain contour intervals from all ensemble members. The background shading is the mean of all ensemble members. The more the lines look like a mess of spaghetti, the more unpredictable the forecast.
Shows high/low centres from all ensemble members. The closer the highs/lows are together the more predictable the forecast.
The probability of winds exceeding 34 kt from all ensemble members. 100% probability means that all members have winds of 34 kt or more at a given location.
The percentage probability at any point of 850 hPa Temperatures greater than 20C based on all ensemble members.
The percentage probability at any point of 850 hPa Temperatures less than minus 5C based on all ensemble members.
The numerical difference between geopotential heights at 500 hPa forecast by ECMWF and GFS. Negative values show where ECMWF forecasts temperatures lower than those forecast by GFS.
The numerical difference between temperatures at 850 hPa forecast by ECMWF and GFS. Positive values show where ECMWF forecasts heights larger than those forecast by GFS.
The percentage probability at any point of 850 hPa Temperatures less than minus 10C based on all ensemble members.
A panel comparing the forecast temperature at approximately 1.5 km / 5000 ft above sea level from each of the 20 ensemble members, the control, their mean, and the deterministic (GFS).
A panel comparing the forecast 500hPa geopotential height from each of the 20 ensemble members, the control, their mean, and the deterministic (GFS).
A panel comparing the accumulated precipitation forecast from each of the 20 ensemble members, the control, their mean, and the deterministic (GFS).
A panel comparing the mean wind forecast from each of the 20 ensemble members, control, their mean, and the deterministic.
A panel comparing the snow depth forecast from each of the 20 ensemble members, the control, their mean, and the deterministic (GFS).
A panel comparing the mean seal level pressure forecast from each of the 20 ensemble members, the control, their mean, and the deterministic (GFS).
The probability (%) of snow falling in the 6 hours leading up to the valid time on the chart.
A panel comparing the forecast temperature at 2 m above ground level from each of the 20 ensemble members, the control, their mean, and the deterministic (GFS).
A panel comparing the predicted temperature 2 m above ground level to what we consider normal (a 30 year average from CFSR 1981-2010 climatology). This includes each of the 20 ensemble members, the control, their mean, and the deterministic (GFS).
MeteoGram Ensemble SkewT 00 06 12 18
GFS 5d GFS 10d NAM ARPEGE
CAPE (J/Kg) SHEAR (kt) INDICIES WXCHARTS.EU
Surface 0-1 km LI SRH
180-0 mb 0-3 km K Index PWAT (mm)
255-0 mb 0-6 km EHI STM (kt)