Alert archive / Florida / Red Flag Warnings in 2011
Red Flag Warning 39, NWS Jacksonville, FL
NWS Jacksonville, FL issued this red flag warning at May 21, 2011, 3:18 AM EDT for Suwannee County, Florida. It took effect at May 21, 2011, 11:00 AM EDT. It was in force for 8 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 21, 2011, 3:18 AM EDT (07:18 UTC)
- In effect from
- May 21, 2011, 11:00 AM EDT
- Expired
- May 21, 2011, 7:00 PM EDT
- In force
- 8 hr
- Issued by
- NWS Jacksonville, FL
County Suwannee County, FL
The nearest sounding before it
Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 7.3 hours before the alert went out and 128 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3355 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 63 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
208 WWUS82 KJAX 210718 RFWJAX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE JACKSONVILLE FL 318 AM EDT SAT MAY 21 2011 FLZ023-030-031-035-036-210830- /O.CAN.KJAX.FW.A.0035.110521T1500Z-110521T2300Z/ BAKER-UNION-BRADFORD-GILCHRIST-ALACHUA- 318 AM EDT SAT MAY 21 2011 ...FIRE WEATHER WATCH IS CANCELLED... THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS CANCELLED THE FIRE WEATHER WATCH. $$ FLZ020>022-212300- /O.UPG.KJAX.FW.A.0035.110521T1500Z-110521T2300Z/ /O.NEW.KJAX.FW.W.0039.110521T1500Z-110521T2300Z/ HAMILTON-SUWANNEE-COLUMBIA- 318 AM EDT SAT MAY 21 2011 ...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 7 PM EDT THIS EVENING FOR DURATIONS OF LOW RH AND HIGH ERC VALUES ... THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM EDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. MINIMUM RH VALUES ARE EXPECTED TO BE IN THE 25 TO 30 PERCENT RANGE OVER THE AREA. DURATIONS AT OR BELOW 35 PERCENT OF 5 TO 7 HOURS ARE EXPECTED. IN ADDITION...ERC VALUES WILL BE NEAR 37. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ FLZ040-212300- /O.NEW.KJAX.FW.W.0039.110521T1500Z-110521T2300Z/ MARION- 318 AM EDT SAT MAY 21 2011 ...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 7 PM EDT THIS EVENING DUE DURATIONS OF LOW RH AND HIGH ERC VALUES... THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM EDT THIS EVENING. MINIMUM RH VALUES ARE EXPECTED TO BE IN THE 25 TO 30 PERCENT RANGE OVER THE AREA. DURATIONS AT OR BELOW 35 PERCENT OF 4 TO 6 HOURS ARE EXPECTED. IN ADDITION...ERC VALUES WILL BE ABOVE 35. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ MKT
2 follow-up statements
055 WWUS82 KJAX 211812 RFWJAX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE JACKSONVILLE FL 212 PM EDT SAT MAY 21 2011 FLZ020>022-040-220830- /O.NEW.KJAX.FW.A.0036.110522T1600Z-110522T2200Z/ /O.CON.KJAX.FW.W.0039.000000T0000Z-110521T2300Z/ HAMILTON-SUWANNEE-COLUMBIA-MARION- 212 PM EDT SAT MAY 21 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING FOR DURATIONS OF LOW RH AND HIGH ERC VALUES... ...FIRE WEATHER WATCH IN EFFECT SUNDAY AFTERNOON FOR INLAND NORTHEAST FLORIDA DUE TO LOW RH AND HIGH ERC VALUES.. THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A FIRE WEATHER WATCH...WHICH IS IN EFFECT SUNDAY AFTERNOON. A RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING. THIS AFTERNOON...MINIMUM RH VALUES ARE EXPECTED TO BE IN THE 25 TO 30 PERCENT RANGE OVER THE AREA. DURATIONS AT OR BELOW 35 PERCENT OF 5 TO 7 HOURS ARE EXPECTED. IN ADDITION...ERC VALUES WILL BE NEAR 37. SUNDAY...MINIMUM RH VALUES WILL BE NEAR 30 PERCENT DURING THE AFTERNOON HOURS. ERC VALUES WILL BE IN THE UPPER 30S. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ FLZ023>025-030>033-035>037-220830- /O.NEW.KJAX.FW.A.0036.110522T1600Z-110522T2200Z/ BAKER-NASSAU-DUVAL-UNION-BRADFORD-CLAY-ST JOHNS-GILCHRIST-ALACHUA- PUTNAM- 212 PM EDT SAT MAY 21 2011 ...FIRE WEATHER WATCH IN EFFECT SUNDAY AFTERNOON FOR INLAND NORTHEAST FLORIDA DUE TO LOW RH AND HIGH ERC VALUES... THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A FIRE WEATHER WATCH...WHICH IS IN EFFECT SUNDAY AFTERNOON. MINIMUM RH VALUES WILL FALL TO NEAR 30 PERCENT SUNDAY AFTERNOON. IN ADDITION ERC VALUES WILL BE IN THE UPPER 30S. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$
079 WWUS82 KJAX 212304 RFWJAX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE JACKSONVILLE FL 704 PM EDT SAT MAY 21 2011 FLZ020>022-040-220900- /O.EXP.KJAX.FW.W.0039.000000T0000Z-110521T2300Z/ /O.CON.KJAX.FW.A.0036.110522T1600Z-110522T2200Z/ HAMILTON-SUWANNEE-COLUMBIA-MARION- 704 PM EDT SAT MAY 21 2011 ...FIRE WEATHER WATCH REMAINS IN EFFECT SUNDAY AFTERNOON FOR INLAND NORTHEAST FLORIDA DUE TO LOW RH AND HIGH ERC VALUES... ...RED FLAG WARNING HAS EXPIRED... THE RED FLAG WARNING IS NO LONGER IN EFFECT. A FIRE WEATHER WATCH REMAINS IN EFFECT SUNDAY AFTERNOON. FOR SUNDAY...MINIMUM RH VALUES WILL BE NEAR 30 PERCENT DURING THE AFTERNOON HOURS. ERC VALUES WILL BE IN THE UPPER 30S. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ FLZ023>025-030>033-035>037-220900- /O.CON.KJAX.FW.A.0036.110522T1600Z-110522T2200Z/ BAKER-NASSAU-DUVAL-UNION-BRADFORD-CLAY-ST JOHNS-GILCHRIST-ALACHUA- PUTNAM- 704 PM EDT SAT MAY 21 2011 ...FIRE WEATHER WATCH REMAINS IN EFFECT SUNDAY AFTERNOON FOR INLAND NORTHEAST FLORIDA DUE TO LOW RH AND HIGH ERC VALUES... A FIRE WEATHER WATCH REMAINS IN EFFECT SUNDAY AFTERNOON. MINIMUM RH VALUES WILL FALL TO NEAR 30 PERCENT SUNDAY AFTERNOON. IN ADDITION ERC VALUES WILL BE IN THE UPPER 30S. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$
The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 2:12 PM EDT | Fire Weather Watch | JAX | Baker, Bradford, Gilchrist, Nassau, Suwannee, Union | 14 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.