Alert archive / Florida / Red Flag Warnings in 2007
Red Flag Warning 57, NWS Melbourne, FL
NWS Melbourne, FL issued this red flag warning at Nov 7, 2007, 4:43 AM EST for 4 counties in Florida. It took effect at Nov 7, 2007, 8:00 AM 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
- Nov 7, 2007, 4:43 AM EST (09:43 UTC)
- In effect from
- Nov 7, 2007, 8:00 AM EST
- Expired
- Nov 7, 2007, 1:10 PM EST
- In force
- 5 hr
- Issued by
- NWS Melbourne, FL
Counties Lake County, FL, Orange County, FL, Seminole County, FL, Volusia County, FL
The radar
The Melbourne radar (KMLB), 100 km from the middle of the area, began a volume at 09:47 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, 9.7 hours before the alert went out and 90 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
- 2084 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 7 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 070943 RFWMLB RED FLAG WARNING NATIONAL WEATHER SERVICE MELBOURNE FL 443 AM EST WED NOV 7 2007 FLZ041-044-144-072200- /O.UPG.KMLB.FW.A.0042.071107T1700Z-071107T2100Z/ /O.NEW.KMLB.FW.W.0057.071107T1300Z-071107T2200Z/ INLAND VOLUSIA-NORTHERN LAKE-SOUTHERN LAKE- 443 AM EST WED NOV 7 2007 ...RED FLAG WARNING IN EFFECT FROM 8 AM THIS MORNING TO 5 PM EST THIS AFTERNOON DUE TO LOW RH AND 15 MPH WINDS... THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 8 AM THIS MORNING TO 5 PM EST THIS AFTERNOON. NORTHERLY WINDS WILL ADVECT A VERY DRY AIRMASS ACROSS NORTHERN PORTIONS OF EAST CENTRAL FLORIDA THIS MORNING AS A DRY COLD FRONT MOVES SOUTH TODAY. NORTH WINDS 15 MPH AND GUSTY AT TIMES COMBINED WITH MINIMUM LOW RELATIVE HUMIDITIES LESS THAN 35 PERCENT WILL POSE A FIRE WEATHER CONCERN. 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. $$ FLZ045-046-141-072200- /O.NEW.KMLB.FW.W.0057.071107T1300Z-071107T2200Z/ ORANGE-SEMINOLE-COASTAL VOLUSIA- 443 AM EST WED NOV 7 2007 ...RED FLAG WARNING IN EFFECT FROM 8 AM THIS MORNING TO 5 PM EST THIS AFTERNOON DUE TO LOW RH AND 15 MPH WINDS... THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 8 AM THIS MORNING TO 5 PM EST THIS AFTERNOON. NORTHERLY WINDS WILL ADVECT A VERY DRY AIRMASS ACROSS NORTHERN PORTIONS OF EAST CENTRAL FLORIDA THIS MORNING AS A DRY COLD FRONT MOVES SOUTH TODAY. NORTH WINDS 15 MPH AND GUSTY AT TIMES COMBINED WITH MINIMUM LOW RELATIVE HUMIDITIES LESS THAN 35 PERCENT WILL POSE A FIRE WEATHER CONCERN. A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS... LONG DURATIONS OF LOW RELATIVE HUMIDITY OR A COMBINATION OF LOW RELATIVE HUMIDITY AND STRONG WINDS...ARE EITHER OCCURRING NOW... OR ARE FORECAST TO OCCUR IN THE NEXT 24 HOURS. $$
1 follow-up statement
000 WWUS82 KMLB 071810 RFWMLB RED FLAG WARNING NATIONAL WEATHER SERVICE MELBOURNE FL 110 PM EST WED NOV 7 2007 FLZ041-044>046-141-144-071915- /O.CAN.KMLB.FW.W.0057.000000T0000Z-071107T2200Z/ INLAND VOLUSIA-NORTHERN LAKE-ORANGE-SEMINOLE-COASTAL VOLUSIA- SOUTHERN LAKE- 110 PM EST WED NOV 7 2007 ...RED FLAG WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS CANCELLED THE RED FLAG WARNING THAT HAD BEEN IN EFFECT. WHILE DEW POINTS AND RELATIVE HUMIDITY RAPIDLY FELL IMMEDIATELY BEHIND THE FRONTAL PASSAGE WHICH TOOK PLACE PRIOR TO SUNRISE... THESE VALUES HAVE BEEN STEADILY INCREASING EVER SINCE...AND AS OF 1 PM...RELATIVE HUMIDITY VALUES REMAINED ABOVE 40%. ADDITIONALLY...WHILE WINDS HAVE BEEN INCREASING OVER COASTAL VOLUSIA COUNTY..THEY HAVE BEEN VEERING TO A SLIGHT ONSHORE COMPONENT...WHICH IS ALLOWING DEW POINTS TO RISE FURTHER. EVEN ACCOUNTING FOR INCREASING WINDS THIS AFTERNOON...IT REMAINS DOUBTFUL THAT RH VALUES WILL FALL BELOW 35% AT ALL TODAY. SINCE NEITHER THE RH DURATION NOR THE RH PLUS WIND CRITERIA APPEAR AS IF THEY WILL BE MET TODAY...THE RED FLAG WARNING IS CANCELLED AT THIS TIME. $$ CRISTALDI
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.