Alert archive / Florida / Red Flag Warnings in 2011
Red Flag Warning 16, NWS Miami, FL
NWS Miami, FL issued this red flag warning at Apr 22, 2011, 8:53 AM EDT for Broward County, Miami-Dade County, Monroe County, Florida. It took effect at Apr 22, 2011, 12:00 PM EDT. 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
- Apr 22, 2011, 8:53 AM EDT (12:53 UTC)
- In effect from
- Apr 22, 2011, 12:00 PM EDT
- Expired
- Apr 22, 2011, 4:43 PM EDT
- In force
- 5 hr
- Issued by
- NWS Miami, FL
Counties Broward County, FL, Miami-Dade County, FL, Monroe County, FL
The radar
The Miami radar (KAMX), 28 km from the middle of the area, began a volume at 12:58 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 12:00Z, 0.9 hours before the alert went out and 34 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
- 1178 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -65 m²/s²
- 0-3 km storm-relative helicity
- -75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
473 WWUS82 KMFL 221253 RFWMFL URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MIAMI FL 853 AM EDT FRI APR 22 2011 FLZ063-066-067-070-071-073-075-230000- /O.NEW.KMFL.FW.W.0016.110422T1600Z-110423T0000Z/ GLADES-HENDRY-INLAND PALM BEACH-INLAND COLLIER-INLAND BROWARD- INLAND MIAMI DADE-MAINLAND MONROE- 853 AM EDT FRI APR 22 2011 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM EDT THIS EVENING FOR RELATIVE HUMIDITIES BELOW 35 PERCENT AND TRANSPORT WINDS AROUND 15 MPH FOR THE INTERIOR AREAS OF SOUTH FLORIDA EXCEPT FOR SOUTHERN MIAMI-DADE COUNTY... THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 8 PM EDT THIS EVENING. DRY AIR HAS MOVED INTO THE SOUTH FLORIDA THIS MORNING FROM THE ATLANTIC WATERS AHEAD OF AN UPPER LEVEL LOW PRESSURE SYSTEM EAST OF THE BAHAMA ISLANDS. THIS WILL ALLOW FOR HIGHS TO WARM UP INTO THE LOWER TO MID 90S...AS DEW POINTS FALL INTO THE LOWER TO MID 50S OVER MOST OF THE INTERIOR AREAS OF SOUTH FLORIDA THIS AFTERNOON. SO THE RELATIVE HUMIDITIES WILL BE ABLE TO FALL INTO THE MID 20S TO LOWER 30S THIS AFTERNOON INTO EARLY THIS EVENING. THE TRANSPORT WINDS WILL ALSO BE AROUND 15 MPH THIS AFTERNOON INTO EARLY THIS EVENING OVER THE INTERIOR AREAS OF SOUTH FLORIDA...DUE TO THE PRESSURE GRADIENT BETWEEN THE HIGH TO THE NORTH AND THE LOW PRESSURE TO THE EAST. THEREFORE...A RED FLAG WARNING HAS BEEN ISSUED FOR MOST OF INTERIOR SOUTH FLORIDA FROM NOON TO 8 PM EDT THIS EVENING EXCEPT FOR SOUTHERN MIAMI-DADE COUNTY. 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. && $$ BAXTER
2 follow-up statements
618 WWUS82 KMFL 221831 RFWMFL URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MIAMI FL 231 PM EDT FRI APR 22 2011 FLZ063-066-067-070-071-073-075-230000- /O.CON.KMFL.FW.W.0016.000000T0000Z-110423T0000Z/ GLADES-HENDRY-INLAND PALM BEACH-INLAND COLLIER-INLAND BROWARD- INLAND MIAMI DADE-MAINLAND MONROE- 231 PM EDT FRI APR 22 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING FOR RELATIVE HUMIDITIES BELOW 35 PERCENT AND 20 FOOT WINDS AROUND 15 MPH FOR THE INTERIOR AREAS OF SOUTH FLORIDA EXCEPT FOR SOUTHERN MIAMI-DADE COUNTY... DRY AIR REMAINS OVER SOUTH FLORIDA THIS AFTERNOON ALLOWING FOR HIGHS TO WARM UP INTO THE LOWER TO MID 90S OVER THE INTERIOR AREAS OF SOUTH FLORIDA AS DEW POINTS FALL INTO THE LOWER TO MID 50S. THIS WILL ALLOW FOR THE RELATIVE HUMIDITIES TO FALL INTO THE MID 20S TO LOWER 30S THIS AFTERNOON INTO EARLY THIS EVENING. THE 20 FOOT WINDS WILL ALSO BE AROUND 15 MPH THIS AFTERNOON INTO EARLY THIS EVENING OVER THE INTERIOR AREAS OF SOUTH FLORIDA...DUE TO THE PRESSURE GRADIENT BETWEEN THE HIGH TO THE NORTH AND THE LOW PRESSURE TO THE EAST. THEREFORE...A RED FLAG WARNING REMAINS IN EFFECT FOR MOST OF INTERIOR SOUTH FLORIDA UNTIL 8 PM EDT THIS EVENING EXCEPT FOR SOUTHERN MIAMI-DADE COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ BAXTER
295 WWUS82 KMFL 222043 RFWMFL URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MIAMI FL 443 PM EDT FRI APR 22 2011 ...RED FLAG WARNING CANCELLED... FLZ063-066-067-070-071-073-075-222145- /O.CAN.KMFL.FW.W.0016.000000T0000Z-110423T0000Z/ GLADES-HENDRY-INLAND PALM BEACH-INLAND COLLIER-INLAND BROWARD- INLAND MIAMI DADE-MAINLAND MONROE- 443 PM EDT FRI APR 22 2011 ...RED FLAG WARNING IS CANCELLED FOR FIRE WEATHER ZONES 063...066... 067...070...071...073 AND 075... THE NATIONAL WEATHER SERVICE IN MIAMI HAS CANCELLED THE RED FLAG WARNING. REGIONAL OBSERVATIONS INDICATE THAT THE FORECAST CONDITIONS FOR RED FLAG WARNING CRITERIA HAVE NOT MATERIALIZED. THE 20 FOOT WINDS AND THE RELATIVE HUMIDITIES ACROSS MOST OF THE WARNING AREA HAVE NOT EXCEEDED WARNING CRITERIA....THEREFORE THE RED FLAG WARNING HAS BEEN CANCELLED. HOWEVER...RELATIVE HUMIDITIES ACROSS THE INTERIOR PORTION OF COLLIER COUNTY HAVE GONE BELOW CRITICAL LEVELS AND WILL LIKELY PERSIST FOR THE NEXT COUPLE OF HOURS. THEREFORE...A FIRE DANGER STATEMENT WILL BE ISSUED FOR THE INTERIOR PORTION OF COLLIER COUNTY. $$
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.