Alert archive / Florida / Red Flag Warnings in 2011
Red Flag Warning 53, NWS Tallahassee, FL
NWS Tallahassee, FL issued this red flag warning at May 15, 2011, 2:36 AM CDT for 4 counties in Florida. It took effect at May 15, 2011, 2:00 PM CDT. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 15, 2011, 2:36 AM CDT (07:36 UTC)
- In effect from
- May 15, 2011, 2:00 PM CDT
- Expired
- May 15, 2011, 6:00 PM CDT
- In force
- 4 hr
- Issued by
- NWS Tallahassee, FL
Counties Calhoun County, FL, Holmes County, FL, Jackson County, FL, Washington County, FL
The radar
The Eglin Afb radar (KEVX), 45 km from the middle of the area, began a volume at 07:34 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 7.6 hours before the alert went out and 116 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 953 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 1171 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.8
The text
As transmitted, in the capitals the NWS used until 2016.
433 WWUS82 KTAE 150736 RFWTAE URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE TALLAHASSEE FL 336 AM EDT SUN MAY 15 2011 ...A RED FLAG WARNING IS IN EFFECT FROM THIS AFTERNOON THROUGH EVENING FOR PORTIONS OF THE INLAND EASTERN FLORIDA PANHANDLE ...DUE TO EXPECTED LONG DURATIONS OF RELATIVE HUMIDITY BELOW 35 PERCENT AND ERC VALUES ABOVE 34... .IN THE WAKE OF YESTERDAY'S FRONT...COOLER AND DRIER AIR WILL OVERSPREAD ACROSS THE AREA TODAY. ALTHOUGH HIGH TEMPERATURES WILL BE 4-5 DEGREES LOWER THAN YESTERDAY...THE DRIER AIR WILL RESULT IN RELATIVE HUMIDITIES DROPPING BELOW 35 PERCENT FOR AROUND 4 HOURS ACROSS THE WARNING AREA...WHILE ERC VALUES ARE FORECAST TO REMAIN ABOVE 34. A PASSING UPPER DISTURBANCE ON MONDAY WILL BRING A CHANCE OF AFTERNOON SHOWERS. HOWEVER THE LOWER LEVELS OF THE AIR MASS WILL REMAIN DRY AND DISPERSION INDICES WILL APPROACH 75. THUS A FIRE WEATHER WATCH MAY BE ISSUED LATER TODAY VALID FOR MONDAY. FLZ016>019-026-150845- /O.CAN.KTAE.FW.A.0044.110515T1900Z-110515T2300Z/ GADSDEN-LEON-INLAND JEFFERSON-MADISON-LIBERTY- 336 AM EDT SUN MAY 15 2011 ...FIRE WEATHER WATCH IS CANCELLED FOR THE FLORIDA BIG BEND... THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS CANCELLED THE FIRE WEATHER WATCH. NEITHER AT LEAST FOUR HOURS OF LOW RELATIVE HUMIDITIES NOR AN ERC ABOVE 34 IS FORECAST FOR SUNDAY. THEREFORE THE WATCH WAS CANCELLED. $$ FLZ009>011-013-152245- /O.UPG.KTAE.FW.A.0044.110515T1900Z-110515T2300Z/ /O.NEW.KTAE.FW.W.0053.110515T1900Z-110515T2300Z/ HOLMES-WASHINGTON-JACKSON-CALHOUN- 236 AM CDT SUN MAY 15 2011 ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 6 PM CDT THIS EVENING FOR EXPECTED LONG DURATIONS OF RELATIVE HUMIDITY BELOW 35 PERCENT AND ERC VALUES ABOVE 34... THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 2 PM THIS AFTERNOON TO 6 PM CDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. LOW RELATIVE HUMIDITY WILL ENHANCE FIRE GROWTH POTENTIAL. && $$ BLOCK
1 follow-up statement
598 WWUS82 KTAE 152005 RFWTAE URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE TALLAHASSEE FL 405 PM EDT SUN MAY 15 2011 ...A RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM CDT THIS EVENING FOR PORTIONS OF THE INLAND EASTERN FLORIDA PANHANDLE DUE TO LONG DURATIONS OF RELATIVE HUMIDITY BELOW 35 PERCENT AND ERC VALUES ABOVE 34... ...A RED FLAG WARNING IS IN EFFECT FROM 2 PM EDT /1 PM CDT/ TO 7 PM EDT /6 PM CDT/ MONDAY FOR MOST INLAND AREAS OF THE EASTERN FLORIDA PANHANDLE AND BIG BEND...EXCEPT FOR DIXIE COUNTY...DUE TO AN EXPECTED COMBINATION OF RELATIVE HUMIDITY BELOW 35 PERCENT...HIGH DISPERSION LEVELS...AND 20 FOOT WIND SPEEDS 15 MPH OR GREATER... ...A FIRE WEATHER WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR SOUTHEAST ALABAMA...THE EASTERN FLORIDA PANHANDLE AND THE FLORIDA BIG BEND...FOR POSSIBLE RED FLAG CONDITIONS DUE TO A COMBINATION OF DURATIONS OF LOW RELATIVE HUMIDITY...HIGH DISPERSION LEVELS...AND 20 FOOT WIND SPEEDS... .DISCUSSION...MUCH DRIER AIR IS SPREADING ACROSS THE TRI-STATE AREA THIS AFTERNOON FOLLOWING THE PASSAGE OF A COLD FRONT ON SATURDAY. ANOTHER SURGE OF COOLER DRIER AIR WILL PUSH SOUTHWARD ACROSS THE AREA AGAIN ON MONDAY. WHILE TEMPERATURES WILL BE COOLER DEWPOINTS WILL ALSO DROP AND RELATIVE HUMIDITIES ARE EXPECTED TO FALL BELOW CRITICAL LEVELS FOR 2 TO 3 HOURS ACROSS INLAND PORTIONS OF THE EASTERN FLORIDA PANHANDLE AND BIG BEND MONDAY AFTERNOON. ALTHOUGH DURATIONS OF LOW RELATIVE HUMIDITY WILL BE MARGINAL ON MONDAY...DISPERSION LEVELS WILL BE HIGH AND 20 FOOT WINDS WILL BE GUSTING FREQUENTLY 15 TO 20 MPH. THUS A RED FLAG WARNING WILL BE ISSUED FOR MOST INLAND COUNTIES IN THE EASTERN FLORIDA PANHANDLE AND FLORIDA BIG BEND FOR MONDAY AFTERNOON. ON TUESDAY...A COMBINATION OF DURATIONS OF LOW RELATIVE HUMIDITY...HIGH DISPERSIONS...AND 20 FOOT WINDS ARE EXPECTED TO MEET RED FLAG CRITERIA FOR BOTH FLORIDA AND SOUTHEAST ALABAMA COUNTIES...AND A FIRE WEATHER WATCH WILL BE ISSUED FOR THESE AREAS FOR TUESDAY. CONDITIONS SHOULD BE MONITORED THROUGH THURSDAY FOR POSSIBLE RED FLAG CONDITIONS. FLZ009>011-013-160415- /O.NEW.KTAE.FW.W.0054.110516T1800Z-110516T2300Z/ /O.NEW.KTAE.FW.A.0045.110517T1600Z-110518T0100Z/ /O.CON.KTAE.FW.W.0053.000000T0000Z-110515T2300Z/ HOLMES-WASHINGTON-JACKSON-CALHOUN- 305 PM CDT SUN MAY 15 2011 ...A RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM CDT THIS EVENING FOR PORTIONS OF THE INLAND EASTERN FLORIDA PANHANDLE DUE TO LONG DURATIONS OF RELATIVE HUMIDITY BELOW 35 PERCENT AND ERC VALUES ABOVE 34... ...A FIRE WEATHER WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR SOUTHEAST ALABAMA...THE EASTERN FLORIDA PANHANDLE AND THE FLORIDA BIG BEND...FOR POSSIBLE RED FLAG CONDITIONS DUE TO A COMBINATION OF DURATIONS OF LOW RELATIVE HUMIDITY...HIGH DISPERSION LEVELS...AND 20 FOOT WIND SPEEDS... PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE OCCURRING OR EXPECTED TO OCCUR. LOW RELATIVE HUMIDITY COMBINED WITH HIGH DISPERSION LEVELS AND 20 FOOT WIND SPEEDS WILL ENHANCE FIRE GROWTH POTENTIAL. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE POSSIBLE. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ FLZ007-012-016>019-026>029-160415- /O.NEW.KTAE.FW.W.0054.110516T1800Z-110516T2300Z/ /O.NEW.KTAE.FW.A.0045.110517T1600Z-110518T0100Z/ INLAND WALTON-INLAND BAY-GADSDEN-LEON-INLAND JEFFERSON-MADISON- LIBERTY-INLAND WAKULLA-INLAND TAYLOR-LAFAYETTE- 405 PM EDT SUN MAY 15 2011 /305 PM CDT SUN MAY 15 2011/ ...A RED FLAG WARNING IS IN EFFECT FROM 2 PM EDT /1 PM CDT/ TO 7 PM EDT /6 PM CDT/ MONDAY FOR MOST INLAND AREAS OF THE EASTERN FLORIDA PANHANDLE AND BIG BEND...EXCEPT FOR DIXIE COUNTY...DUE TO AN EXPECTED COMBINATION OF RELATIVE HUMIDITY BELOW 35 PERCENT...HIGH DISPERSION LEVELS...AND 20 FOOT WIND SPEEDS 15 MPH OR GREATER... ...A FIRE WEATHER WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR SOUTHEAST ALABAMA...THE EASTERN FLORIDA PANHANDLE AND THE FLORIDA BIG BEND...FOR POSSIBLE RED FLAG CONDITIONS DUE TO A COMBINATION OF DURATIONS OF LOW RELATIVE HUMIDITY...HIGH DISPERSION LEVELS...AND 20 FOOT WIND SPEEDS... PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE OCCURRING OR EXPECTED TO OCCUR. LOW RELATIVE HUMIDITY COMBINED WITH HIGH DISPERSION LEVELS AND 20 FOOT WIND SPEEDS WILL ENHANCE FIRE GROWTH POTENTIAL. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE POSSIBLE. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ ALZ065>069-FLZ008-014-015-034-108-112-114-115-118-127-128-134- 160415- /O.NEW.KTAE.FW.A.0045.110517T1600Z-110518T0100Z/ COFFEE-DALE-HENRY-GENEVA-HOUSTON-CENTRAL WALTON-INLAND GULF- INLAND FRANKLIN-INLAND DIXIE-SOUTH WALTON-COASTAL BAY- COASTAL GULF-COASTAL FRANKLIN-COASTAL JEFFERSON-COASTAL WAKULLA- COASTAL TAYLOR-COASTAL DIXIE- 405 PM EDT SUN MAY 15 2011 /305 PM CDT SUN MAY 15 2011/ ...A FIRE WEATHER WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR SOUTHEAST ALABAMA...THE EASTERN FLORIDA PANHANDLE AND THE FLORIDA BIG BEND...FOR POSSIBLE RED FLAG CONDITIONS DUE TO A COMBINATION OF DURATIONS OF LOW RELATIVE HUMIDITY...HIGH DISPERSION LEVELS...AND 20 FOOT WIND SPEEDS... PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE POSSIBLE. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ DUVAL
The office that day
Everything else NWS Tallahassee, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 15, 3:05 PM CDT | Fire Weather Watch | TAE | Bay, Calhoun, Dixie, Franklin, Gadsden, Gulf and 10 more | 24 hr |
| May 15, 3:05 PM CDT | Red Flag Warning | TAE | Bay, Calhoun, Gadsden, Holmes, Jackson, Jefferson and 7 more | 13 hr |
Nearby
Red Flag Warnings in Florida, 2011Every red flag warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.