Alert archive / Florida / Red Flag Warnings in 2009
Red Flag Warning 49, NWS Melbourne, FL
NWS Melbourne, FL issued this red flag warning at Sep 30, 2009, 4:06 AM EDT for 5 counties in Florida. It took effect at Sep 30, 2009, 1:00 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
- Sep 30, 2009, 4:06 AM EDT (08:06 UTC)
- In effect from
- Sep 30, 2009, 1:00 PM EDT
- Expired
- Sep 30, 2009, 7:00 PM EDT
- In force
- 6 hr
- Issued by
- NWS Melbourne, FL
Counties Lake County, FL, Orange County, FL, Osceola County, FL, Seminole County, FL, Volusia County, FL
The radar
The Melbourne radar (KMLB), 86 km from the middle of the area, began a volume at 08:10 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
Cape Canaveral, FL (KXMR), launched 00:00Z, 8.1 hours before the alert went out and 81 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
- 2254 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 908 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 137 m²/s²
- 0-3 km storm-relative helicity
- 167 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 6.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS82 KMLB 300806 RFWMLB URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MELBOURNE FL 406 AM EDT WED SEP 30 2009 ...DRIER AIR HAS SETTLED INTO NORTHERN SECTIONS OF EAST CENTRAL FLORIDA... FLZ041-044>046-053-144-302300- /O.CAN.KMLB.FW.A.0033.090930T1600Z-090930T2300Z/ /O.NEW.KMLB.FW.W.0049.090930T1700Z-090930T2300Z/ INLAND VOLUSIA-NORTHERN LAKE-ORANGE-SEMINOLE-OSCEOLA- SOUTHERN LAKE- 406 AM EDT WED SEP 30 2009 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM EDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM EDT THIS EVENING. THIS REPLACES THE FIRE WEATHER WATCH THAT HAD BEEN IN EFFECT. A MUCH DRIER POST FRONTAL AIR MASS WILL PRODUCE SEVERAL HOURS OF RELATIVE HUMIDITY VALUES AT OR BELOW 35 PERCENT OVER THE WARNING AREA. 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. && $$ FLZ141-302300- /O.NEW.KMLB.FW.W.0049.090930T1700Z-090930T2300Z/ COASTAL VOLUSIA- 406 AM EDT WED SEP 30 2009 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM EDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM EDT THIS EVENING. A MUCH DRIER POST FRONTAL AIR MASS WILL PRODUCE SEVERAL HOURS OF RELATIVE HUMIDITY VALUES AT OR BELOW 35 PERCENT OVER THE WARNING AREA. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ CRISTALDI
Nearby
Red Flag Warnings in Florida, 2009Every red flag warning in 2009
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.