Alert archive / Florida / Red Flag Warnings in 2008
Red Flag Warning 36, NWS Melbourne, FL
NWS Melbourne, FL issued this red flag warning at May 21, 2008, 11:40 AM EDT for 4 counties in Florida. It took effect at May 21, 2008, 12:00 PM EDT. It was in force for 7 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 21, 2008, 11:40 AM EDT (15:40 UTC)
- In effect from
- May 21, 2008, 12:00 PM EDT
- Expired
- May 21, 2008, 7:00 PM EDT
- In force
- 7 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 15:46 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 12:00Z, 3.7 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
- 351 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 890 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 128 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS82 KMLB 211540 RFWMLB RED FLAG WARNING NATIONAL WEATHER SERVICE MELBOURNE FL 1140 AM EDT WED MAY 21 2008 FLZ041-044>046-141-144-147-212300- /O.NEW.KMLB.FW.W.0036.080521T1600Z-080521T2300Z/ INLAND VOLUSIA-NORTHERN LAKE-ORANGE-SEMINOLE-COASTAL VOLUSIA- SOUTHERN LAKE-NORTHERN BREVARD- 1140 AM EDT WED MAY 21 2008 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM EDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 7 PM EDT THIS EVENING. BRISK WESTERLY WINDS COMBINED WITH RAPIDLY WARMING TEMPERATURES AND DRY AIR OVER THE NORTHERN SECTIONS IS ALLOWING RH VALUES TO RAPDILY FALL AND A RED FLAG WARNING IS NOW IN EFFECT THROUGH 7 PM. 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. $$ GLITTO
What forecasters said that day
The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Melbourne, FL wrote its last area forecast discussion before this red flag warning went out at May 21, 9:30 AM EDT, 2 hours 10 minutes earlier.
Area forecast discussion, May 21, 9:30 AM EDT, 2 hours 10 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MELBOURNE FL 930 AM EDT WED MAY 21 2008 .DISCUSSION... ...GUSTY HOT WEST WINDS TODAY... ...TEMPS COOLING DOWN THIS HOLIDAY WEEKEND... MORNING CAPE SOUNDING HAD 30KT JUST OFF THE SURFACE AND PROFILERS INDICATING 40KT AT 3KFT. BREEZY CONDITIONS ALREADY DEVELOPING OVER THE CWA THIS MORNING AND HAVE BUMPED UP WINDS ACCORDINGLY FOR THE REST OF TODAY. MORNING STRATUS/FOG DIMINISHING AND LEADING TO PARTLY CLOUDY SKIES WITHIN THE NEXT HOUR OR SO. OLD SURFACE BAND AND HIGHER DEW POINT AIR MASS WILL RESIDE OVER THE SOUTHERN SECTIONS AND WILL LIMIT MENTIONABLE SHOWER/STORM CHANCES TO SRN SECTIONS OF OSCEOLA AND SRN BREVARD COUNTIES SOUTHWARD. && .AVIATION...GUSTY WEST WINDS DEVELOPING THIS MORNING AS MIXING OCCURS. MORNING LOW STRATUS DIMINISHING AND MOST AREAS BECOMING VFR 14-15Z. VFR REST OF DAY OUTSIDE ISOLATED AFTERNOON STORMS OVER SOUTHERN AREAS MAINLY SWD FROM KMLB. && .MARINE...WITH WINDS NEAR THE COAST AND AT OFFSHORE BUOYS 15-20KT WILL ADD A CAUTION HEADLINE NEAR SHORE LEGS AS WELL WITH MORNING UPDATE. EXPECT SOME DECREASE OVER OPEN WATER HEADING THROUGH THE AFTERNOON BUT AREAS NEAR THE COASTLINE CONTINUED BREEZY. && .FIRE WEATHER...WILL NEED TO MONITOR T/TD SPREAD CLOSELY OVER NORTHERN SECTIONS WHERE DRIER AIR IN PLACE. WITH WINDS INCREASING THIS MORNING...IT WILL BE A FIRE SENSITIVE DAY AND COULD BE APPROACHING INSTANTANEOUS RED FLAG CONDITIONS...MAY EVEN NEED A SHORT-FUSED RED FLAG WARNING. (PREVIOUS DISCUSSION)STRONG TRANSPORT WINDS AND DEEPER MIXING HEIGHTS WILL PRODUCE VERY GOOD TO EXCELLENT DISPERSION INDICES THIS AFTERNOON. EAST COAST SEA BREEZE WILL BE A NO-SHOW SO HAVE UNDERCUT DEWPOINTS A COUPLE DEGREES ESP NEAR THE COAST. MIN RH VALUES SHOULD DIP BETWEEN 35 AND 40% TO PRODUCE A FIRE SENSITIVE DAY WITH POSSIBLE CONTROL PROBLEMS FOR ANY NEW OR EXISTING WILDFIRES. STRONGER THAN USUAL OVERNIGHT TRANSPORT WINDS WILL ALSO MAKE FOR GOOD DISPERSION AFTER SUNSET. INCREASING MOISTURE THU AND FRI WITH WEAKENING WEST WINDS SO EAST COAST SEA BREEZE SHOULD BE ABLE TO FORM. SOMEWHAT HIGHER RAIN CHANCES TOO. BACKDOOR FRONT WILL BRING COOLER AIR AND ONSHORE WINDS THIS HOLIDAY WEEKEND. && .CLIMATE...RECORD HIGHS FOR WED MAY 21: DAYTONA BEACH 97 1998 ORLANDO INTL 96 1963 MELBOURNE 96 1998 VERO BEACH 95 1962 && .MLB WATCHES/WARNINGS/ADVISORIES... FL...NONE. AM...NONE. && GLITTO/VOLKMER
Hazardous weather outlook, May 21, 10:07 AM EDT, 1 hour 33 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MELBOURNE FL 1007 AM EDT WED MAY 21 2008 AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141- 144-147-212000- COASTAL WATERS FROM FLAGLER BEACH TO VOLUSIA BREVARD COUNTY LINE OUT 20 NM- COASTAL WATERS FROM VOLUSIA BREVARD COUNTY LINE TO SEBASTIAN INLET OUT 20 NM- COASTAL WATERS FROM SEBASTIAN INLET TO JUPITER INLET OUT 20 NM- WATERS FROM FLAGLER BEACH TO VOLUSIA BREVARD COUNTY LINE 20 TO 60 NM OFFSHORE- WATERS FROM VOLUSIA BREVARD COUNTY LINE TO SEBASTIAN INLET 20 TO 60 NM OFFSHORE- WATERS FROM SEBASTIAN INLET TO JUPITER INLET 20 TO 60 NM OFFSHORE- INLAND VOLUSIA-NORTHERN LAKE-ORANGE-SEMINOLE-SOUTHERN BREVARD- OSCEOLA-INDIAN RIVER-OKEECHOBEE-ST. LUCIE-MARTIN-COASTAL VOLUSIA- SOUTHERN LAKE-NORTHERN BREVARD- 1007 AM EDT WED MAY 21 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA. .DAY ONE...TODAY AND TONIGHT. ...THUNDERSTORM IMPACT... LINGERING MOISTURE ASSOCIATED WITH A WEAKENED FRONTAL BAND OVER SOUTH CENTRAL FLORIDA AND DAYTIME INSTABILITY WILL PRODUCE A SLIGHT CHANCE OF LIGHTNING STORMS THIS AFTERNOON...MAINLY SOUTH OF LAKE KISSIMMEE AND MELBOURNE. CLOUD TO GROUND LIGHTNING STRIKES AND WIND GUSTS TO 40 MPH WILL BE THE MAIN THREATS WITH STORMS. ...WIND AND SEA IMPACT... SMALL CRAFT SHOULD EXERCISE CAUTION FOR WEST TO SOUTHWEST WINDS OF 15 TO 20 KNOTS TODAY. EVEN AS WINDS OVER THE OPEN WATERS BEGIN TO DECREASE DURING THE AFTERNOON...GUSTY WINDS WILL CONTINUE NEAR THE COAST. ...FIRE WEATHER IMPACT... DRY SOIL CONDITIONS AND BRISK TRANSPORT WINDS WILL ENHANCE CONTROL PROBLEMS FOR ANY NEW OR EXISTING WILDFIRES TODAY. THE DRIEST CONDITIONS ARE EXPECTED ACROSS THE NORTHERN SECTIONS. HOWEVER...SOUTHERN SECTIONS MAY HAVE CLOUD TO GROUND LIGHTNING STRIKES WITH AFTERNOON THUNDERSTORMS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. THERE WILL A CHANCE OF AFTERNOON THUNDERSTORMS EACH DAY THROUGH SATURDAY. THE RIP CURRENT RISK WILL INCREASE SUNDAY THROUGH TUESDAY AS LONG PERIOD SWELLS ARRIVE IN THE ARE A...AND WINDS AND SEAS WILL INCREASE TO EXERCISE CAUTION THRESHOLDS AGAIN BY MONDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY. GLITTO
Nearby
Red Flag Warnings in Florida, 2008Every red flag warning in 2008
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.