AWC News Archive
[2016 Apr 14] Removal of Legacy Pages and JAVA applets
Effective Thursday, 30JUN16 at 1500Z, the legacy WEB pages remaining after the WEB site redesign (including JAVA applets) will be retired. See Service Change Notice 16-30
and be sure to update your links and bookmarks.
[2016 Apr 08] Experimental PIREP Submission form
Effective April 12, the AWC made the PIREP online submission form available to users on an experimental basis to solicit feedback. The comment period will continue through June 6.
For more information, please see Public Information Statement 16-09
[2016 Jan 12] Experimental Graphical Forecasts for Aviation
We are pleased to announce that Experimental Graphical Forecasts for Aviation are available at:http://new.aviationweather.gov/areafcst
You can provide feedback by following the red SURVEY link toward the upper right portion of the web page.
The Experimental Graphical Forecasts for Aviation are designed to provide meteorological information equivalent to the textual Area Forecast (FA) in a graphical format, as requested by the FAA. This product includes observations and forecasts valid for the continental United States that provide data critical for aviation safety, overlaid on high-resolution basemaps. Please note that the text-based Area Forecast is still being produced.
[2015 Nov 04] [IMPORTANT] Web Site Migration
Between November 4-25, 2015, the Aviation Weather Center will be migrating www.AviationWeather.gov to a new operational platform. While we are doing everything we can to minimize impact on our users, there may be intermittent outages, higher than normal latencies, and occasional data lag during this transition period. Please use our Contact Us page at http://www.aviationweather.gov/contact to report problems. We appreciate your patience while we work to bring you a more robust, high performing web experience.
[2015 Aug 26] SigWx LL Graphic change
Effective September 1, 2015, www.AviationWeather.gov users will see changes on the Prog Charts page
. The current 4-panel Low Level SFC-240 chart will be replaced with a 2-panel chart. The new 2-panel chart will be the same as the top two panels in the current chart, depicting the freezing level and areas of IFR, MVFR, and moderate or greater turbulence. The bottom two panels of the chart will be removed. In lieu of these bottom two panels, an enhanced surface chart that includes fronts, pressure, precipitation type, precipitation intensity, and weather type, will be displayed. The green precipitation polygons will be replaced by shaded precipitation areas using the National Digital Forecast Database (NDFD) weather grid.
[2015 Jun 09] Regarding recent problems on www.AviationWeather.gov website.
On Friday June 5th www.AviationWeather.gov experienced a catastrophic failure. In order to resolve the problems the website was reverted to a previous version released on May 4th. The updates to the web site since that release are no longer available including updates to the HEMS Tool. The HEMS Tool has been rolled back to its initial version from May 4th.
We sincerely apologize for the inconvenience this failure caused our valued users. We are taking aggressive steps to ensure www.AviationWeather.gov maintains the high levels of reliability you have come to expect.
[2015 May 04] HEMS Tool Now Available
Effective May 4, 2015, 1800 Coordinated Universal Time (UTC), the NWS Aviation Weather Center (AWC) in
Kansas City, MO, will make the Helicopter Emergency Medical Services (HEMS) Tool operationally available
on the Aviation Weather Center website: http://www.aviationweather.gov/hemst
The HEMS Tool interactively displays high resolution grids of critical weather parameters: ceiling,
visibility, flight category, winds, icing severity, relative humidity, temperature, radar, satellite,
G-AIRMETs, SIGMETs, METARs, TAFs, PIREPs, NWS warnings, and Center Weather Advisories (CWAs).
Overlays include navigational aids, airports and heliports for the entire United States.
More detail is revealed as you zoom in and individual layers can be turned on or off independently.
The tool is not a weather product; it is a display that aggregates a number of existing weather products
into a single, quick-glance, automated graphic.
It can be found under the TOOLS menu.
[2015 Apr 15] Job openings for meterologists at AWC
The Cooperative Institute for Research in the Atmosphere at Colorado State University is now advertising for two new positions located here at the Aviation Weather Center.
The first is for a cloud and visibility meteorologist and developer
who will also provide oversight for three other associates in the testbed.
The second is for a WAFS meteorologist and developer
who will focus on the use of ensembles for the World Area Forecast System's international aviation hazards grids.
Feel free to contact Bruce Entwistle with any questions about these positions.
C. Bruce Entwistle
National Weather Service
Aviation Weather Center
7220 NW 101st Terrace, Room 103
Kansas City, MO 64153-2371
[2015 Mar 03] New experimental Collaborative Aviation Weather Statement (CAWS)
The new experimental Collaborative Aviation Weather Statement (CAWS) is now being issued by the AWC. This product, now available on the AWC webpage
, will be issued for specific, high-impact, thunderstorm events focusing on the Core 29 airports and high air traffic sensitive regions. The focus is event-driven, supporting the ability to more effectively initiate, adjust, or terminate planned or active Traffic Management Initiatives (TMI) to balance traffic demand in the constraint locations.
Read the Public Information Statement
[2015 Jan 08] NWS Aviation Weather Seminar
On Saturday, January 31, the NWS office in Wichita, KS in association with the Kansas Army National Guard, and EagleMed is hosting a FREE one-day seminar for general aviation (GA) pilots and aviation weather enthusiasts.
The Seminar will feature presenters from a multitude of agencies in the public and private sector to discuss how weather, particularly thunderstorms, affects the aviation community.
For more information and to register:
[2014 Oct 31] Experimental CDM Convective Guidance
New experimental "CDM Convective Forecast Planning guidance" product available 31 Oct. CDM stands for Collaborative Decision Making (CDM) which is a joint FAA and Airline industry initiative aimed at improving air traffic flow management through increased information exchange among aviation community stakeholders.
PNS is available here.
[2014 Oct 28] Budget Analyst Position
The Cooperative Institute for Research in the Atmosphere (CIRA) is currently advertising for a Budget Analyst
position at the Aviation Weather Center, in Kansas City.
[2014 Oct 07] CIP/FIP ADDS display updated to 13km
The new 13km CIP and FIP output is now available on ADDS. The new 13km output uses the native 13km RAP model input as opposed to a degraded 20km output used over the last two years. This also uses native resolution radar data which results in slightly less coverage of icing potential and SLD in areas of thunderstorm activity. Forecasts from FIP have also been extended from 12 to 18 hours.
[2014 Oct 03] Admin position
Jamison Professional Services has an Administrative Assistant position located at the Aviation Weather Center currently advertised: for more information
[2014 Sep 17] Latest Website changes (9/17)
- Fixes for the radar navigation links
- Fixes for PIREP submission pages
[2014 Aug 29] Fissure Eruptions Observed Near Icelandic Volcano; Aviation Code "Red"
- According to the Icelandic Met Office, fissure eruptions have been observed north of the Dynjujokull Glacier in Iceland.
- Due to this activity near the Baroarbunga volcano, the Aviation Color code has been raised to "red".
- Increased seismic activity, often with near-constant earthquakes, has been monitored at the Baroarbunga volcano since August 16, 2014.
- Frequent status updates have been provided to numerous international collaborators by the Icelandic Met Office and there has been considerable collaboration with the Volcanic Ash Advisory Centers (VAAC).
- The London VAAC is now issuing advisories due to this activity.
- Additional information will be provided, as needed, in a Significant Event Report as details become available.
NWS Meteorologists at the NWS Aviation Weather Center (AWC) are in close coordination with national and international partners to maintain awareness as this event continues to unfold.
Icelandic Met Office - Volcano and Aviation Color Code Information
Washington DC VAAC (No Advisories)
Aviation Weather Center Volcanoes page
[2014 Aug 28] Latest Website changes
Today we released some changes to the web site.
- Some stylistic changes for site links
- Bug fixes for displaying TAFs alongside METARs on some pages
- Highlights of new news items with orange menu at top of page. The menu changes after you view the news page
As always, if you have any questions please send them via the feedback form
[2014 Aug 05] NWS joins FAA-AOPA "Got Weather" educational campaign
The National Oceanic and Atmospheric Administration (NOAA) National Weather Service (NWS)has joined the FAA and the general aviation community’s eight month Got Weather?
national safety campaign. NOAA’s NWS delivers consistent, timely, and accurate weather information for both domestic and international airspace from three specialized aviation weather offices – Aviation Weather Center, Alaska Aviation Weather Unit and the Weather Forecast Office in Honolulu, HI. Aviation weather experts at these offices provide forecasts of aviation hazards such as icing, turbulence, and convection. Advisories, forecasts and other weather information is available through a wide-variety of sources, including the popular Aviation Digital Data Service (ADDS) website, “one-stop shopping” at the “Standard Briefing” webpage on ADDS links many of NOAA’s aviation weather products.
[2014 Jul 29] New Features on website
Some new features are now available on the site.
- New navigation buttons on the Site Radar page
- Radar on the home page
- More satellite coverage on the Satellite page and a new satellite layer on the home page.
- Simplified Menus and quicker access to the 7 day forecast from the top menu.
We hope you enjoy the new features. If you have any questions, feel free to send them to us
[2014 Jul 24] NWS to discontinue experimental Aviation Impact Maps on 8 August, 2014
Effective Friday, August 8, 2014, at 1800 Coordinated Universal
Time (UTC), the NWS will discontinue the experimental Aviation
Impact Maps available online at http://www.spc.noaa.gov/exper/sref/hourly/
[2014 Jun 22] Altimeter observation errors
The altimeter observation errors have been resolved from Saturday night except for three sites: Meeker, Colorado - Eagle, Alaska - St Paul Island, Alaska. These will be repaired shortly
[2014 Jun 21] Warning: altimeter observation errors
Please exercise caution when using altimeter observations!
Widespread altimeter observation errors may be possible across the southern United States due to a possible software error. Technicians are currently checking altimeter settings at sites where errant software may have been deployed. The reported error was caused by the trailing zero of the elevation at the observing site being removed. For example, an elevation of 3620 feet was listed as 362 feet. This error will result in incorrect altimeter calculations. While the error was caught before the software was pushed across the country, the National Weather Service Southern Region reports that up to 600 sites may have been impacted.
This error is expected to be fully corrected by Sunday morning.
[2014 May 30] AWC Lead Forecaster Vacancy Announcement
Please see vacancy announcement NWS-NCEP-2014-0019
- Preparing and issuing warnings, advisories, aviation and other forecasts.
- Serving as a staff specialist for aviation meteorology.
- Performing a wide range of assignments of considerable difficulty and complexity in forecasting or techniques development.
- Consulting/collaborating with a wide variety of government and other officials.
- Helping infuse science into operations, and/or leading other special weather programs for an office or the broader organization.
[2014 May 15] Low ceilings/visibility will impact the East Coast through Friday
Increasing tropical moisture streaming northward ahead of a cold front will impact the East Coast through Friday. The main impacts to aviation will be low ceilings/visibility ahead and along the front, strong winds, and thunderstorms with heavy rain. In addition, winds aloft are expected to create compression issues.
Timing: today through Friday (Saturday for BOS).
Thursday-Thursday night no impact
Friday IFR ceilings/vis with rain developing heavy at times. Rainfall amounts up to a half inch.
Friday night/Saturday IFR with rain/SCT thunderstorms tapering off Sat evening. Winds SE 15-25 G30KT. An additional inch possible. Compression most likely Friday afternoon/Saturday morning.
Thursday Low IFR/IFR through the afternoon. SE Winds 10-15KT.
Thursday Night Low IFR. Heavy rain/thunderstorms late. Southeast winds 15-20KT. Rainfall around an inch with localized flooding possible.
Friday IFR with heavy rain and scattered thunderstorms in the morning tapering off in the evening. An additional inch expected with continued threat for localized flooding. Winds SE 15-20KT becoming NW in the evening. Compression most likely morning through afternoon hours.
Thursday Low IFR through the morning hours, improving to MVFR/VFR this afternoon.
Thursday Night Low IFR with heavy rain/thunderstorms. Southeast winds 15-20KT. Rainfall around an inch with localized flooding possible.
Friday IFR with heavy rain and scattered thunderstorms in the morning tapering off in the evening. An additional 1-1.5 inches expected with continued threat for flooding. Winds SE 15-20KT becoming NW in the afternoon. Compression most likely early morning hours.
Thursday Low IFR through the morning hours, improving to MVFR/VFR by noon.
Thursday Night Low IFR with heavy rain/thunderstorms. Southeast winds 15-20KT. Rainfall 1-2 inches with localized flooding possible.
Friday IFR with heavy rain and scattered thunderstorms in the morning tapering off in the evening. An additional 1-2 inches expected with continued threat for flooding. Winds SE 15-20KT becoming NW in the afternoon. Compression most likely early morning hours.
Thursday MVFR/IFR with periods of heavy rain/Thunderstorms. 2-3" of rain expected by Friday AM. Localized flooding in and around the airport possible.
Friday - VFR
[2014 May 07] NTSB provides NWS with safety recommendations.
The National Transportation Safety Board has issued a recommendation to both the Federal Aviation Administration and the National Weather Service Tuesday, urging both agencies to work toward placing more weather information in pilots' hands.
The NTSB wants those agencies to do a better job in sharing more real-time weather information with pilots, and do a better job of teaching them about dangerous weather conditions they may face.
The NTSB made the following five recommendations to the NWS:
The full report can be downloaded here
- Modify NWS aviation weather products to make them consistent with NWS nonaviation-specific advisory products when applicable, so that they advise of hazardous conditions including aviation hazards less than 3,000 square miles in area that exist outside of terminal aerodrome forecast coverage areas. (A-14-17)
- Provide a primary aviation weather product that specifically addresses both the potential for and the existence of mountain wave activity and the associated aviation weather hazards (as recommended in Safety Recommendation A-14-14 to the FAA). (A-14-18)
- In cooperation with FAA, revise the Interagency Agreement between the FAA and the NOAA for the CWSU and its accompanying statement of work if needed to add the new responsibilities of CWSU personnel in response to Safety Recommendations A-14-17 and/or A-14-18 to the NWS, which are in addition to the other responsibilities currently performed by the NWS under this agreement. (A-14-19)
- Establish a protocol that will enhance communication among meteorologists at the CWSUs, the AWC, and, as applicable, other NWS facilities to ensure mutual situation awareness of critical aviation weather data among meteorologists at those facilities. (A-14-20)
- Establish standardized guidance for all NWS aviation weather forecasters on the weighting of information reported in pilot reports (PIREPs) that will (1) promote consistent determination of hazard severity reported in a PIREP and (2) assist in aviation weather product issuance. (A-14-21)
[2014 May 05] Got Weather? Campaign started May 4th
The Federal Aviation Administration (FAA) and general aviation groups have launched an eight-month national safety campaign titled, Got Weather? #GotWx
, to help general aviation (GA) pilots prepare for potential weather challenges they may encounter during the 2014 flying season. FAA Administrator Michael Huerta and GA leaders kicked off the Got Weather?
campaign Sunday, May 4, in Anchorage at the Great Alaska Aviation Gathering.
[2014 Apr 03] AWC DNS Outage
The WOC and consequently many NOAA websites including the AWC web site (www.AviationWeather.gov) experienced a DNS outage that started at approximately 1815 UTC on April 3. The servers were still running but browsers couldn't resolve www.AviationWeather.gov. DNS servers started recovering after 19 UTC but many took several hours to get updated. This didn't affect the aviationweather.gov address and many were able to still get in through that address. Full DNS access to the site was reestablished around 2120 UTC.
[2014 Mar 25] New Web Site is live
The new www.aviationweather.gov site went live at 18UTC on March 25th. This utilizes the new weather.gov layout and adds new GIS interactive maps to the site.
[2014 Jan 29] Severe Turbulence 16 Jan 2014 Discussion
AWC Senior Aviation Meteorologist Karen Eagle has posted a short review on the severe turbulence event of January 16, 2014 over the northeastern U.S. The review is found on the Aviation Weather Testbed at http://testbed.aviationweather.gov/page/public?name=wxsummary
[2013 Nov 22] Winter Weather Dashboard is operational
The Winter Weather Dashboard (WWD) is now operational. The WWD provides automated guidance of potential winter weather impacting large U.S. airports, and is based on the NWS Short Range Ensemble Forecast System (SREF). The link to the WWD is: http://www.aviationweather.gov/decisionsupport/winterdashboard
[2013 Oct 21] End of CCFP Season
2013 CCFP season ends soon. The last issuance of CCFP will be at 1900 EDT on Thursday, October 31, 2013. We will start the 2014 CCFP Season on Monday, March 3, 2014 at 0300 Eastern Time.
[2013 Oct 01] Government shutdown
Due to the Federal Government shutdown, NOAA.gov and most associated web sites are unavailable. However, because the information this site provides is necessary to protect life and property, it will be updated and maintained during the Federal Government shutdown.
[2013 Sep 25] New WAFS Gridded Data
New Display of WAFS Gridded Data released on 9/25/2013. This website demonstrates how the WAFS
gridded data for turbulence, icing and Cb can be displayed. The display is not approved for use by either the FAA or ICAO, though the underlying gridded data are approved for use in support of flight planning. For more information on how to gain access to the underlying gridded data, see the WIFS website
[2013 Sep 12] NWS Customer Satisfaction SurveyClick Here
for a link to the NWS customer satisfaction survey for 2013.
[2013 Sep 10] Aviation Digital Data Service (ADDS) User Discussion
From 3:15 to 4:15 Pacific Time on October 24 there will be a discussion among the users, developers, and operators of ADDS which will take place at the NBAA Annual Meeting in Las Vegas as part of the Friends and Partners in Aviation Weather (FPAW) Fall Meeting. An anticipated outcome of this discussion is the planning and scheduling of a one-day ADDS User Workshop to take place early in 2014. Interested ADDS users are invited to take part in this discussion, either by participation in person at the meeting, or through remote access via Ready Talk. Click the following link to register for either in-person or remote participation. See http://ral.ucar.edu/general/fpaw2013/adds.php
[2013 Mar 12] Prog charts problems
We are currently investigating a problem with the surface prog charts. Watch this space for updates. The progcharts are now up to date.
[2013 Jan 16] Gulf of Mexico METARs Collective
You can now request all Gulf of Mexico METARs via www.aviationweather.gov/adds/metars
by using "@GULF" similar to the @State feature (ie. "@KS").
[2012 Nov 24] Systems Analyst Position
The AWC in Kansas City, MO is looking for an experienced Systems Analyst to lead the AWC's Systems Engineering Team. Interested? Click here
for the Position Description and information on how to apply (position open until January 15 or until filled).
[2012 Sep 27] Text Data Problem Resolved
The Text Data Server problem has been resolved.
[2012 Sep 25] Data Server problems
We are currently experiencing a downgrade in performance in the Text Data Server. It appears to be most problematic between :55 after the hour till :15 after. We are working hard to restore the service and will update this message with further information as it is available.
[2012 Aug 23] Night time PIREPS
Call for night-time PIREPs. The Aviation Weather Center is conducting research project on low level turbulence away from the influences of terrain and in the presence of stronger wind. The AWC is requesting Pilots, controllers, and dispatchers make an extra effort to provide PIREPs below 12,000 feet during the nighttime hours--primarily from 0200 UTC through 1100 UTC. The focus of this project runs across the central plains; from Texas to Canada, between the Rockies and the Ohio River Valley, but any nighttime PIREP is greatly appreciated. The project runs through September 1, 2012.
[2012 Aug 20] NCEP network outages
We are currently experiencing some data outages due to upstream network problems. We will update this message when the problem is resolved. We apologise for any inconvenience this may cause.
[2012 Jul 20] Ceiling and Visibility Analysis will become Operational
Ceiling and Visibility Analysis Product will become operational July 24, 2012. See TIN 12-31
for more Information.
[2012 Jun 12] GTG updated to version 2.5 using Rapid Refresh (RAP)
The Graphical Turbulence Guidance
(GTG) product, version 2.5, was updated to use the new Rapid Refresh (RAP) model on May 1st, 2012. As part of that upgrade, a bug was introduced to the rendering which caused an under-reporting of turbulence. That issue has now been rectified. You should expect to see more widespread reporting of turbulence in the forecasts beginning 15Z June 12.
[2012 May 01] RAP replaces RUC
On the 1st of May, the Rapid Refresh (RAP) model replaced the Rapid Update Cycle (RUC). This impacts CIP
and Turbulence GTG
products. The GTG model has also been upgraded from 20KM to 13KM resolution. For more information see the TIN for the RAP
and GTG TIN
[2012 Apr 27] RAP updates
The Rapid Refresh (RAP) model is being implemented today, May 1st. The RAP will be used as the forecast model that provides the initial forecast conditions instead of the Rapid Update Cycle (RUC) for Automated Icing CIP
and Turbulence GTG
products. In conjunction with the upgrade of RAP model, GTG will be upgraded from 20KM to 13KM resolution. During the upgrade process some interruptions of data availability may be possible. Further guidance can be found in the TIN for the RAP
and GTG TIN
[2012 Apr 18] ECFP product available
The Extended Convective Forecast Product (ECFP)
is now operational! As operational guidance, the ECFP
is now supported 24/7 and provides a probabilistic, quick-look forecast of convective potential across the National Airspace System (NAS) through 3-days.
[2012 Mar 15] Announcing two new Forecaster positions at Command Center
The Aviation Weather Center is hiring two new GS-1340-13/14 forecaster positions at the FAA Air Traffic Control System Command Center in Warrenton, VA. See the Job announcement
and how to apply at: USAJOBS
[2012 Mar 13] Flight Path Tool Application Update
The Java Flight Path Tool Application is getting a face lift March 20, 2012. Pre-Flight the experimental version here
[2012 Mar 13] Announcing two new Forecaster positions at Command Center
The Aviation Weather Center is hiring two new GS-1340-13/14 forecaster positions at the FAA Air Traffic Control System Command Center in Warrenton, VA. See the Job announcement
and how to apply at: USAJOBS
[2011 Nov 09] QICP Login
Effective 12 Dec. The QICP login was moved to the top of the page. Additionally QICP users are now able to change their passwords.
[2011 Nov 02] QICP Login Lead Up
On 8 Nov. The QICP login will be moved to the top of the page. Additionally QICP users will now be able to change their passwords.
[2011 Aug 08] NextGen Development Meteorologist
The Aviation Weather Testbed at the AWC is seeking a NextGen Development Meteorologist. Click here for further information
[2011 Aug 03] Space Weather Alert
Space Weather Alert: Increasing solar activity may adversely impact HF communications and/or GPS navigation signal reception. Please visit Space Weather Prediction Center
for detailed information.
[2011 Aug 01] ECFP Day 3 Outlook
Experimental Extended Convective Forecast Product (ECFP) has added a Day 3 Outlook
[2011 Aug 01] AWC New Website Infrastructure
The AWC’s new website infrastructure became operational on June 28, 2011. We have tried to make these enhancements transparent to all users. However, to ensure data availability — we strongly suggest you change any bookmarks or automated methods of accessing AWC websites to the following URLs:http://www.aviationweather.gov
Please contact us at firstname.lastname@example.org
if you are adversely affected.
[2011 Aug 01] AWC Satellite Meteorologist
AWC looking for a Satellite Meteorologist to work in the Aviation Weather Testbed. See Position Description
and Position Vacancy Listing
. Type the PVL number ... 70257, and click on the link to “Researcher – Aviation Weather Center”.
[2011 Jun 11] IFFDP Flight Folder Issue
We apologize for the recent unexpected changes to the look and feel of the Flight Folder web page. Users still have access to the IFFDP Flight Folder content without needing to register. Click on the “Flight Folder” link on the left-hand menu. Because the new Web-Enabled IFFDP (WebIFFDP) system is nearing operational roll-out, we have made some minor changes to the look and feel. If you have questions please email us email@example.com
or call the Help Desk at +1(877)280-2811.
[2011 Jun 08] NWS Scheduled Maintenance Postponed
The NWS maintenance scheduled for June 7 was postponed to June 8. The maintenance will occur between 1230-1345Z. During this period you may experience data loss or latency on our web pages. Specific data sets that may be affected are NCWF/NCWD, Icing Forecasts, Turbulence Forecasts, and PIREPs on AviationWeather.gov and ADDS. WIFS and WebIFFDP users may see data delays with International SIGMETs, TAFs, and METARs. We apologize for any inconvenience this may cause you.
[2011 Jun 07] QICP Certification
AviationWeather.gov and AviationWeather.gov/adds are now QICP Certified. See QICP Description
for registration info and QICP Agreement
for more details.
[2011 Jun 01] NCEP’s online Newsletter
NCEP is pleased to announce the first edition of NCEP’s online Newsletter, which will appear on a quarterly basis. The newsletter, suggested as a result of a review of NCEP conducted by the University Corporation of Atmospheric Research (UCAR), will be distributed to NCEP customers and partners to keep them apprised of the breadth of NCEP activites. The newsletter can be accessed via a link from NCEP’s homepage
, as well as from links from each of the NCEP Centers.
[2011 Mar 01] CCFP Resumed
Collaborative Convective Forecast Product (CCFP) resumed 01 March 2011.
[2011 Jan 18] Forecast Icing Severity (FIS)
The Aviation Weather Center began operationally issuing the gridded Forecast Icing Severity (FIS) product effective 18 January 2011. See TIN 10-51
for more information. Click here
for information on GRIB file parameter changes.
[2010 Dec 01] Current Icing Product updates
The Aviation Weather Center implemented changes to the Current Icing Product. The changes are internal to the GRIB file format. See TIN 10-46
for more information.
[2010 Sep 21] Volcanic Ash Working Group
Federal Aviation Administration announces Public Meeting/Working Group With Industry on Volcanic Ash on November 5, 2010. Please click here
for additional information.