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Update on Storm-Based Warnings. Partner’s Meeting Wednesday, June 20, 2007. John Ferree NWS Severe Storms Services Leader. May 8, 2003. The Weather Warning Partnership. National Weather Service. The Public. News Media and Private Sector Meteorologists. Emergency Management. - PowerPoint PPT Presentation
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Update on Storm-Based WarningsUpdate on Storm-Based Warnings
Partner’s Meeting
Wednesday, June 20, 2007
Partner’s Meeting
Wednesday, June 20, 2007
May 8, 2003
John FerreeNWS Severe Storms Services Leader
John FerreeNWS Severe Storms Services Leader
The Weather Warning Partnership
The Weather Warning Partnership
The Public
National Weather Service
NewsMedia and Private
Sector Meteorologists
Emergency Management
County-Based Tornado Warnings8 Counties under warning
Almost 1 million people warned
County-Based Tornado Warnings8 Counties under warning
Almost 1 million people warned
• More specific• Increased clarity• Supports newdissemination technology
Why Storm-Based Warnings?Why Storm-Based Warnings?
Three simultaneous tornadoes within
line of severe thunderstorms
Storm-Based Tornado Warnings
70% less area covered~600,000 fewer people warned
Storm-Based Tornado Warnings
70% less area covered~600,000 fewer people warned
An Extreme Example ofFalsely Alarmed Area
An Extreme Example ofFalsely Alarmed Area
• Severe Thunderstorm Warning for San Bernardino and Riverside County CA
– 3.5 million people
– 27,000 square miles
• Threatened Area
– < 2000 people
– 750 square miles
• Severe Thunderstorm Warning for San Bernardino and Riverside County CA
– 3.5 million people
– 27,000 square miles
• Threatened Area
– < 2000 people
– 750 square miles
Delineation Improves FFWsDelineation Improves FFWs
Feature Tracking AddedFeature Tracking Added
• Location and motion of feature
– Estimated location of tornado, leading edge of gust front, leading edge of hail core, or other.
• Location and motion of feature
– Estimated location of tornado, leading edge of gust front, leading edge of hail core, or other.
* AT 425 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM. THIS STORM WAS LOCATED 12 MILES SOUTHWEST OF AKRON...AND MOVING NORTHEAST AT 20 MPH.
• THE SEVERE THUNDERSTORM WILL BE NEAR... AKRON AND 8 MILES WEST OF LATNER BY 500 PM MST
LAT...LON 4031 10316 4011 10303 3998 10346 4014 10356 TIME...MOT...LOC 2325Z 248DEG 18KT 4010 10340
* AT 425 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM. THIS STORM WAS LOCATED 12 MILES SOUTHWEST OF AKRON...AND MOVING NORTHEAST AT 20 MPH.
• THE SEVERE THUNDERSTORM WILL BE NEAR... AKRON AND 8 MILES WEST OF LATNER BY 500 PM MST
LAT...LON 4031 10316 4011 10303 3998 10346 4014 10356 TIME...MOT...LOC 2325Z 248DEG 18KT 4010 10340
Outstanding Issues for Storm-Based WarningsOutstanding Issues for Storm-Based Warnings
1. County Warning Area (CWA) boundaries
2. Multiple warnings in a county
3. Local Storm Report (LSR) improvements
4. CAP format
1. County Warning Area (CWA) boundaries
2. Multiple warnings in a county
3. Local Storm Report (LSR) improvements
4. CAP format
County Warning Area BoundariesCounty Warning Area Boundaries
St. Louis CWA
Paducah CWA
Lincoln CWA
Madison
Bond
Clinton
Fayette
Marion
St. Clair
Washington
Randolph
Perry
Jackson
Franklin
Jefferson
Hamilton
WilliamsonSaline
Wayne
Clay
STL
PAH
ILX
Madison
Bond
Clinton
Fayette
Marion
St. Clair
Washington
Randolph
Perry
Jackson
Franklin
Jefferson
Hamilton
WilliamsonSaline
Wayne
Clay
STL
PAH
ILX
County Warning Area BoundariesCounty Warning Area Boundaries
St. Louis CWA
Paducah CWA
Lincoln CWA
Issued by PAH
Issued by STL
Multiple Warnings in One County/Parish
Multiple Warnings in One County/Parish
• Issue for text, radio, TV crawls
• Add reference to other valid warnings
• Include counties with directional delimiters?
• Summary severe weather statements?
• Issue for text, radio, TV crawls
• Add reference to other valid warnings
• Include counties with directional delimiters?
• Summary severe weather statements?
Madison
Bond
Clinton
Fayette
Marion
St. Clair
Washington
Randolph
Perry
Jackson
Franklin
Jefferson
Williamson
TOR until 3:30PM
SVR until 3:45PM
New Requirements forLocal Storm Reports (LSR)
New Requirements forLocal Storm Reports (LSR)
• Individual report output with VTEC ETN
– Accurate corrections
• Cumulative report output
– One line per report (15 reports in 15 lines)
– Flexible time range (severe reports 18Z – 21Z)
– Flexible report type (snowfall accumulation)
• CAP/XML Format
• Individual report output with VTEC ETN
– Accurate corrections
• Cumulative report output
– One line per report (15 reports in 15 lines)
– Flexible time range (severe reports 18Z – 21Z)
– Flexible report type (snowfall accumulation)
• CAP/XML Format
CAP FormatCAP Format
“The Order requires EAS participants to accept messages using Common Alerting Protocol (CAP)…to ensure the efficient and rapid transmission of EAS alerts to the American public in a variety of formats (including text, audio and video) and via different means (broadcast, cable, satellite, and other networks) and to promote the development of Next Generation EAS.”
Federal Communications Commission AnnouncementMay 31, 2007
“The Order requires EAS participants to accept messages using Common Alerting Protocol (CAP)…to ensure the efficient and rapid transmission of EAS alerts to the American public in a variety of formats (including text, audio and video) and via different means (broadcast, cable, satellite, and other networks) and to promote the development of Next Generation EAS.”
Federal Communications Commission AnnouncementMay 31, 2007
http://www.eic.org/docs/FCCCAPEASnotice.pdf
Summary of Outstanding Issues for Storm-Based Warnings
Summary of Outstanding Issues for Storm-Based Warnings
1. County Warning Area (CWA) boundaries
2. Multiple warnings in a county
3. Local Storm Report (LSR) improvements
4. CAP format
1. County Warning Area (CWA) boundaries
2. Multiple warnings in a county
3. Local Storm Report (LSR) improvements
4. CAP format
www.weather.gov/sbwarningswww.weather.gov/sbwarnings
Questions?Questions?
• Contact information
– E-mail: John.T.Ferree@noaa.gov
– Phone: 405-325-2209
• Success depends on all of us!
• Contact information
– E-mail: John.T.Ferree@noaa.gov
– Phone: 405-325-2209
• Success depends on all of us!
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