Alert archive / Florida / Red Flag Warnings in 2007
Red Flag Warning 63, NWS Melbourne, FL
NWS Melbourne, FL issued this red flag warning at Dec 17, 2007, 4:52 AM EST for 5 counties in Florida. It took effect at Dec 17, 2007, 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
- Dec 17, 2007, 4:52 AM EST (09:52 UTC)
- In effect from
- Dec 17, 2007, 12:00 PM EST
- Expired
- Dec 17, 2007, 5:00 PM EST
- In force
- 5 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 09:53 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
Tampa Bay, FL (KTBW), launched 00:00Z, 9.9 hours before the alert went out and 148 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
- 2 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1013 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- -76 m²/s²
- 0-3 km storm-relative helicity
- -4 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS82 KMLB 170952 RFWMLB RED FLAG WARNING NATIONAL WEATHER SERVICE MELBOURNE FL 452 AM EST MON DEC 17 2007 ...FIRE WEATHER WATCH IN EFFECT FROM MONDAY MORNING THROUGH MONDAY AFTERNOON... FLZ041-044>046-053-144-172200- /O.UPG.KMLB.FW.A.0047.071217T1600Z-071217T2200Z/ /O.NEW.KMLB.FW.W.0063.071217T1700Z-071217T2200Z/ INLAND VOLUSIA-NORTHERN LAKE-ORANGE-SEMINOLE-OSCEOLA- SOUTHERN LAKE- 452 AM EST MON DEC 17 2007 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 5 PM EST THIS AFTERNOON... THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM NOON UNTIL 5 PM. A VERY DRY AIRMASS WILL REMAIN IN PLACE TODAY...AND RELATIVE HUMIDITIES ARE EXPECTED TO DROP BELOW 35% FOR 4 TO 5 HOURS THIS AFTERNOON. A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS... LONG DURATIONS OF LOW RELATIVE HUMIDITY OR A COMBINATION OF LOW RELATIVE HUMIDITY AND STRONG WINDS...ARE EITHER OCCURRING NOW... OR ARE FORECAST TO OCCUR IN THE NEXT 24 HOURS. $$ CRISTALDI
1 follow-up statement
000 WWUS82 KMLB 171935 RFWMLB RED FLAG WARNING NATIONAL WEATHER SERVICE MELBOURNE FL 235 PM EST MON DEC 17 2007 ...FIRE WEATHER WATCH IN EFFECT FROM MONDAY MORNING THROUGH MONDAY AFTERNOON... FLZ041-045-046-053-172045- /O.CAN.KMLB.FW.W.0063.000000T0000Z-071217T2200Z/ INLAND VOLUSIA-ORANGE-SEMINOLE-OSCEOLA- 235 PM EST MON DEC 17 2007 ...RED FLAG WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS CANCELLED THE RED FLAG WARNING FOR ORANGE...OSCEOLA...SEMINOLE AND INTERIOR VOLUSIA COUNTIES. $$ FLZ044-144-172200- /O.CON.KMLB.FW.W.0063.000000T0000Z-071217T2200Z/ NORTHERN LAKE-SOUTHERN LAKE- 235 PM EST MON DEC 17 2007 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM EST THIS AFTERNOON... RELATIVE HUMIDITIES WILL BE BETWEEN 30 AND 35 PERCENT THIS AFTERNOON FOR A TOTAL OF AROUND 4 HOURS...WITH NORTH WINDS AROUND 10 MPH. A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS... LONG DURATIONS OF LOW RELATIVE HUMIDITY OR A COMBINATION OF LOW RELATIVE HUMIDITY AND STRONG WINDS...ARE EITHER OCCURRING NOW... OR ARE FORECAST TO OCCUR IN THE NEXT 24 HOURS. $$ KELLY
Nearby
Red Flag Warnings in Florida, 2007Every red flag warning in 2007
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.