Alert archive / Florida / Red Flag Warnings in 2007
Red Flag Warning 47, NWS Melbourne, FL
NWS Melbourne, FL issued this red flag warning at May 20, 2007, 5:13 AM EDT for 5 counties in Florida. It took effect at May 20, 2007, 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
- May 20, 2007, 5:13 AM EDT (09:13 UTC)
- In effect from
- May 20, 2007, 1:00 PM EDT
- Expired
- May 20, 2007, 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 09:12 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, 9.2 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
- 17 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1670 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- -39 m²/s²
- 0-3 km storm-relative helicity
- 58 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 200913 RFWMLB RED FLAG WARNING NATIONAL WEATHER SERVICE MELBOURNE FL 513 AM EDT SUN MAY 20 2007 ...LOW RELATIVE HUMIDITY VALUES EXPECTED ACROSS THE NORTH INTERIOR THIS AFTERNOON... FLZ041-044>046-053-144-202300- /O.UPG.KMLB.FW.A.0036.070520T1600Z-070520T2300Z/ /O.NEW.KMLB.FW.W.0047.070520T1700Z-070520T2300Z/ /O.NEW.KMLB.FW.A.0037.070521T1700Z-070521T2300Z/ INLAND VOLUSIA-NORTHERN LAKE-ORANGE-SEMINOLE-OSCEOLA- SOUTHERN LAKE- 513 AM EDT SUN MAY 20 2007 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM EDT THIS EVENING... ...FIRE WEATHER WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY 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 THIS EVENING. A FIRE WEATHER WATCH HAS BEEN ISSUED FOR MONDAY AFTERNOON THROUGH EARLY MONDAY EVENING. DRIER AIR WILL REMAIN IN PLACE OVER NORTHERN INTERIOR SECTIONS OF EAST CENTRAL FLORIDA TODAY. RELATIVE HUMIDITY VALUES WILL DROP BELOW 35 PERCENT FOR SEVERAL HOURS AGAIN THIS AFTERNOON. THE DRY AIR WILL REMAIN IN PLACE MONDAY. 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. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS...LONG DURATIONS OF LOW RELATIVE HUMIDITY OR A COMBINATION OF LOW RELATIVE HUMIDITY AND STRONG WINDS...ARE POSSIBLE BETWEEN 24 AND 72 HOURS. $$ CRISTALDI
The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 5:13 AM EDT | Fire Weather Watch | MLB | Lake, Orange, Osceola, Seminole, Volusia | 25 hr |
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.