Alert archive / Florida / Red Flag Warnings in 2010
Red Flag Warning 21, NWS Jacksonville, FL
NWS Jacksonville, FL issued this red flag warning at Feb 16, 2010, 2:46 AM EST for 7 counties in Florida. It took effect at Feb 16, 2010, 12:00 PM EST. It was in force for 5 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
- Feb 16, 2010, 2:46 AM EST (07:46 UTC)
- In effect from
- Feb 16, 2010, 12:00 PM EST
- Expired
- Feb 16, 2010, 5:00 PM EST
- In force
- 5 hr
- Issued by
- NWS Jacksonville, FL
Counties Baker County, FL, Bradford County, FL, Flagler County, FL, Gilchrist County, FL, Nassau County, FL, Suwannee County, FL, Union County, FL
The radar
The Jacksonville radar (KJAX), 71 km from the middle of the area, began a volume at 07:44 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
Jacksonville, FL (KJAX), launched 00:00Z, 7.8 hours before the alert went out and 72 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
- 13 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 469 m above ground
- 0-6 km bulk shear
- 87 kt
- 0-1 km storm-relative helicity
- 93 m²/s²
- 0-3 km storm-relative helicity
- 259 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
191 WWUS82 KJAX 160746 RFWJAX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE JACKSONVILLE FL 246 AM EST TUE FEB 16 2010 FLZ020>025-030>033-035>038-040-162215- /O.UPG.KJAX.FW.A.0019.100216T1700Z-100216T2300Z/ /O.NEW.KJAX.FW.W.0021.100216T1700Z-100216T2200Z/ /O.NEW.KJAX.FW.A.0020.100217T1700Z-100217T2200Z/ HAMILTON-SUWANNEE-COLUMBIA-BAKER-NASSAU-DUVAL-UNION-BRADFORD-CLAY- ST JOHNS-GILCHRIST-ALACHUA-PUTNAM-FLAGLER-MARION- 246 AM EST TUE FEB 16 2010 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 5 PM EST THIS AFTERNOON DUE TO LONG DURATIONS OF LOW RELATIVE HUMIDITIES... ...FIRE WEATHER WATCH IN EFFECT WEDNESDAY AFTERNOON DUE TO STRONG WINDS AND LOW RELATIVE HUMIDITIES... THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 5 PM EST THIS AFTERNOON. A FIRE WEATHER WATCH IS IN EFFECT WEDNESDAY AFTERNOON. MUCH DRIER AIR OVER THE REGION TODAY WILL RESULT IN 4 TO 6 HOURS OF RELATIVE HUMIDITIES BELOW 35 PERCENT...THUS A RED FLAG WARNING IS IN EFFECT. A FIRE WEATHER WATCH HAS BEEN ISSUED FOR WEDNESDAY AFTERNOON DUE TO THE COMBINATION OF STRONG WESTERLY WINDS AND LOW RELATIVE HUMIDITIES. 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. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ JDS
1 follow-up statement
961 WWUS82 KJAX 161834 RFWJAX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE JACKSONVILLE FL 134 PM EST TUE FEB 16 2010 FLZ020>025-030>033-035>038-040-171200- /O.UPG.KJAX.FW.A.0020.100217T1700Z-100217T2200Z/ /O.NEW.KJAX.FW.W.0022.100217T1700Z-100217T2200Z/ /O.CON.KJAX.FW.W.0021.000000T0000Z-100216T2200Z/ HAMILTON-SUWANNEE-COLUMBIA-BAKER-NASSAU-DUVAL-UNION-BRADFORD-CLAY- ST JOHNS-GILCHRIST-ALACHUA-PUTNAM-FLAGLER-MARION- 134 PM EST TUE FEB 16 2010 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM EST THIS AFTERNOON DUE TO LOW RH AND WINDS... ...RED FLAG WARNING IN EFFECT FROM NOON TO 5 PM EST WEDNESDAY DUE TO LOW RH AND WINDS... THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM NOON TO 5 PM EST WEDNESDAY. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. A RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM EST THIS AFTERNOON. MUCH DRIER AIR OVER THE REGION TODAY WILL RESULT IN CLOSE TO 4 HOURS OF RELATIVE HUMIDITIES BELOW 35 PERCENT ALONG WITH MARGINALLY STRONG WINDS...THUS A RED FLAG WARNING IS IN EFFECT. A RED FLAG WARNING HAS BEEN ISSUED FOR WEDNESDAY AFTERNOON DUE TO THE COMBINATION OF STRONG WESTERLY WINDS AND LOW RELATIVE HUMIDITIES. PRECAUTIONARY/PREPAREDNESS ACTIONS... && PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ DEESE
The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 16, 2:46 AM EST | Fire Weather Watch | JAX | Baker, Bradford, Flagler, Gilchrist, Nassau, Suwannee and 1 more | 11 hr |
| Feb 16, 3:16 AM EST | Wind Chill Advisory | JAX | Flagler, Nassau | 30 hr |
| Feb 16, 3:54 AM EST | Freeze Watch | JAX | Baker, Bradford, Flagler, Gilchrist, Nassau, Suwannee and 1 more | 10 hr |
| Feb 16, 1:34 PM EST | Red Flag Warning | JAX | Baker, Bradford, Flagler, Gilchrist, Nassau, Suwannee and 1 more | 28 hr |
| Feb 16, 2:11 PM EST | Freeze Warning | JAX | Baker, Bradford, Flagler, Gilchrist, Nassau, Suwannee and 1 more | 19 hr |
| Feb 16, 6:27 PM EST | Fire Weather Watch | JAX | Baker, Bradford, Flagler, Gilchrist, Nassau, Suwannee and 1 more | 20 hr |
Nearby
Red Flag Warnings in Florida, 2010Every red flag warning in 2010
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.