Alert archive / Florida / Red Flag Warnings in 2011
Red Flag Warning 19, NWS Miami, FL
NWS Miami, FL issued this red flag warning at May 12, 2011, 3:01 AM EDT for Broward County, Florida. It took effect at May 12, 2011, 2:00 PM EDT. It was in force for 6 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 12, 2011, 3:01 AM EDT (07:01 UTC)
- In effect from
- May 12, 2011, 2:00 PM EDT
- Expired
- May 12, 2011, 8:00 PM EDT
- In force
- 6 hr
- Issued by
- NWS Miami, FL
County Broward County, FL
The radar
The Miami radar (KAMX), 60 km from the middle of the area, began a volume at 06:59 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
Miami, FL (KMFL), launched 00:00Z, 7.0 hours before the alert went out and 40 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
- 755 J/kg
- Mixed-layer CIN
- -132 J/kg
- Mixed-layer LCL
- 1512 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -31 m²/s²
- 0-3 km storm-relative helicity
- 66 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
678 WWUS82 KMFL 120701 RFWMFL URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MIAMI FL 301 AM EDT THU MAY 12 2011 FLZ063-066-070-071-121515- /O.UPG.KMFL.FW.A.0013.110512T1800Z-110513T0000Z/ /O.NEW.KMFL.FW.W.0019.110512T1800Z-110513T0000Z/ GLADES-HENDRY-INLAND COLLIER-INLAND BROWARD- 301 AM EDT THU MAY 12 2011 ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM EDT THIS EVENING FOR RH AND HIGH ERC VALUES FOR FIRE WEATHER ZONES 063...066...070 AND 071...WHICH CORRESPONDS TO GLADES, HENDRY, INLAND COLLIER, AND INLAND BROWARD COUNTIES... THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM EDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. A DRIER AIR MASS WILL MOVE INTO SOUTH FLORIDA ON THURSDAY BEHIND A WEAK TROUGH MOVING ACROSS THE AREA THIS EVENING. THIS WILL LEAD TO LOWER RELATIVE HUMIDITY VALUES WHICH IN COMBINATION WITH ANTECEDENT CONDITIONS WILL RESULT IN FAVORABLE CONDITIONS FOR FIRE WEATHER IGNITION AND SPREAD PARTICULARLY DURING THE AFTERNOON HOURS. THEREFORE...A RED FLAG WARNING IS NOW IN EFFECT FOR GLADES... HENDRY... INLAND COLLIER... AND INLAND BROWARD COUNTIES FOR THURSDAY AFTERNOON. 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. && $$
2 follow-up statements
123 WWUS82 KMFL 120846 RFWMFL URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MIAMI FL 446 AM EDT THU MAY 12 2011 FLZ063-066-070-071-130000- /O.CON.KMFL.FW.W.0019.110512T1800Z-110513T0000Z/ GLADES-HENDRY-INLAND COLLIER-INLAND BROWARD- 446 AM EDT THU MAY 12 2011 ...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM EDT THIS EVENING FOR LOW RELATIVE HUMIDITIES AND ERC VALUES ABOVE 35...FOR GLADES, HENDRY, INLAND COLLIER, AND INLAND BROWARD COUNTIES... A RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM EDT THIS EVENING. A DRIER AIR MASS WILL MOVE INTO SOUTH FLORIDA TODAY BEHIND A WEAK TROUGH OF LOW PRESSURE. THIS WILL LEAD TO LOWER RELATIVE HUMIDITY VALUES WHICH IN COMBINATION WITH ANTECEDENT CONDITIONS WILL RESULT IN FAVORABLE CONDITIONS FOR FIRE WEATHER IGNITION AND SPREAD PARTICULARLY DURING THE AFTERNOON HOURS. THEREFORE...A RED FLAG WARNING IS NOW IN EFFECT FOR GLADES, HENDRY, INLAND COLLIER, AND INLAND BROWARD COUNTIES THIS AFTERNOON AND EARLY EVENING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$
543 WWUS82 KMFL 130001 RFWMFL URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MIAMI FL 801 PM EDT THU MAY 12 2011 FLZ063-066-070-071-130115- /O.EXP.KMFL.FW.W.0019.000000T0000Z-110513T0000Z/ GLADES-HENDRY-INLAND COLLIER-INLAND BROWARD- 801 PM EDT THU MAY 12 2011 ...RED FLAG WARNING WILL EXPIRE AT 8 PM EDT THIS EVENING FOR GLADES, HENDRY, INLAND COLLIER AND INLAND BROWARD COUNTIES... RED FLAG CONDITIONS HAVE IMPROVED AS RELATIVE HUMIDITIES THIS EVENING WILL CLIMB ABOVE 35 PERCENT. THEREFORE, THE RED FLAG WARNING WILL EXPIRE AT 8 PM EDT THIS EVENING. $$
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 10:18 AM EDT | Small Craft Advisory for Hazardous Seas | MFL | 42 hr | |
| May 12, 1:40 PM EDT | Special Weather Statement | MFL | Miami-Dade | 50 min |
| May 12, 2:15 PM EDT | Special Weather Statement | MFL | Miami-Dade | 45 min |
| May 12, 2:27 PM EDT | Severe Thunderstorm Warning | MFL | Miami-Dade | 33 min |
| May 12, 2:46 PM EDT | Special Weather Statement | MFL | Collier | 44 min |
| May 12, 3:02 PM EDT | Special Weather Statement | MFL | Miami-Dade | 58 min |
| May 12, 3:24 PM EDT | Special Weather Statement | MFL | Collier | 66 min |
| May 12, 3:47 PM EDT | Special Weather Statement | MFL | Monroe | 58 min |
| May 12, 3:49 PM EDT | Severe Thunderstorm Warning | MFL | Miami-Dade, Monroe | 28 min |
| May 12, 6:51 PM EDT | Special Weather Statement | MFL | Collier | 24 min |
| May 12, 7:33 PM EDT | Special Weather Statement | MFL | Collier | 27 min |
| May 12, 7:47 PM EDT | Special Marine Warning | MFL | 28 min |
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.