Alert archive / Florida / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 105, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Aug 9, 2001, 2:45 PM EDT for Orange County, Osceola County, Florida. It was in force for 60 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 9, 2001, 2:45 PM EDT (18:45 UTC)
- Expired
- Aug 9, 2001, 3:45 PM EDT
- In force
- 60 min
- Issued by
- NWS Melbourne, FL
- Area
- Whole counties
Counties Orange County, FL, Osceola County, FL
The radar
The Melbourne radar (KMLB), 60 km from the middle of the area, began a volume at 18:47 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 12:00Z, 6.8 hours before the alert went out and 75 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
- 2091 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 765 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
159 WUUS52 KMLB 091848 SVRMLB FLC095-097-091945- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MELBOURNE FL 245 PM EDT THU AUG 9 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... ORANGE COUNTY NORTHERN OSCEOLA COUNTY IN EAST CENTRAL FLORIDA * UNTIL 345 PM EDT. * AT 242 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS DEVELOPING RAPIDLY FROM 8 MILES EAST OF LAKE MARY JANE...TO NARCOOSEE TO SAINT CLOUD AND KISSIMMEE. THE STORMS WERE NEARLY STATIONARY...WHILE OTHER STORMS IN THE AREA CONTINUE TO FORM RAPIDLY. IF YOU LIVE IN ORANGE OR NORTH OSCEOLA COUNTIES...BE ON THE LOOKOUT FOR DAMAGING WIND GUSTS FROM THESE STORMS. SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 58 MILES AN HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. IF THE STORM APPROACHES YOU...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR. $$ LAT...LON 2839 8163 2809 8142 2844 8090 2851 8109 CRISTALDI
What forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Aug 9, 2:20 PM EDT, 25 minutes earlier.
Area forecast discussion, Aug 9, 2:20 PM EDT, 25 minutes before
EAST CENTRAL FLORIDA FORECAST DISCUSSION...CORRECTED PRELIM CCF NATIONAL WEATHER SERVICE MELBOURNE FL 220 PM EDT THU AUG 9 2001 CURRENT/TONIGHT...THE THUMB HAS APPARENTLY FINALLY BEEN LIFTED ACROSS CEN FL AS CONVECTION HAS DEVELOPED RAPIDLY AFTER THE CU WAS VERY SLOW TO FORM THIS MORNING AND EARLY AFTERNOON. IN FACT IT LOOKED SO POOR...I ALMOST UPDATED LATE TO LOWER POPS AREA WIDE. EXPECT TO SEE ACTIVITY TO LAST INTO THE EVENING HOURS AS BOUNDARY INTERACTIONS PREVAIL. WILL KEEP A SCT POP INTERIOR...PROBABLY IN THE 30-40% RANGE. FRI/SAT...REMNANTS OF BARRY ARE PROGGED TO DROP SOUTH...BUT EXPECT THIS TO MOSTLY AFFECT NRN FL. MAIN FEATURE TO AFFECT E CEN FL FORECAST WILL BE AN UPR LVL LOW SEEN ON WV IMAGERY NE OF THE BAHAMAS. THIS LOW HAS BEEN PINCHED OFF FROM THE BASE OF AN UPR TROF OVER THE ATL AND IS SLOWLY DRIFTING WEST TOWARDS THE REGION. WE HAVE BEEN SUPPRESSED FOR THE LAST SEVERAL DAYS BY A PERSISTENT AREA OF NEGATIVE VORTICITY OVER CEN FL...ALTHOUGH WE WERE ABLE TO BREAK THROUGH FINALLY THIS AFTERNOON. AS THE LOW DRIFTS TOWARDS THE FL PENINSULA...LOOKS LIKE SHUD BE MORE INFLUENCE BY POSITIVE ENERGY BUT MOISTURE LVLS WILL DECREASE DUE TO DRYER AIR...WHICH IS VERY APPARENT IN THE WV LOOP ON THE WRN SIDE OF THIS SYSTEM. AT LOW LVLS...WRLY WINDS WILL CONTINUE TO INCREASE THROUGH FRI AND THEN BECOME MORE SSW SAT AS A S/WV DROPS INTO AL/GA. THIS SHUD FAVOR THE ERN HALF OF THE PENINSULA FOR AFTERNOON CONVECTION AS THE EC SEA BREEZE IS HELD UP UNTIL LATE AND WILL REMAINED PINNED NEAR THE COAST NORTH OF THE CAPE. CURRENT FRI FORECAST CALLS FOR 40 POPS INTERIOR AND NRN COAST AND 30 POPS SRN COAST AND SEE NO REASON TO CHANGE THESE NUMBERS ATTM. SAT MAY BE A LITTLE BETTER CHC FOR TRWS AS THE UPR LOW MOVES INTO THE GOMEX PLACING THE CWA ON THE MORE FAVORABLE ERN SIDE...AS INDICATED BY FWC POPS. AM GOING TO STAY WITH MORE CONSERVATIVE MAV NUMBERS FOR NOW THOUGH...WHICH MEANS SAME POPS AS FRI. CAN TWEAK UP THE HIGHER FWC POPS IF NEED NEXT FEW FORECASTS. TEMPS SHUD REMAIN NEARER TO CLIMO SAT AFTER ANOTHER WARM DAY FRI. EXTENDED...MODELS HAVE BEEN INCONSISTENT WITH THE PLACEMENT OF THE BERMUDA RIDGE AXIS DURING AND AFTER THE WEEKEND...AS EACH RUN HAS PUSHED BACK THE TIMING OF THE RIDGE AXIS MOVING BACK NORTH. LATEST AVN NOW KEEPS THE BERMUDA RIDGE AXIS BETWEEN NEAR THE CWA THROUGH MON NIGHT WITH DEEP EASTERLIES NEVER REALLY FORMING AS PREVIOUSLY EXPECTED. LATEST RUNS ALSO SLOW DOWN THE TROPICAL WAVE...NOT MOVING IT THROUGH UNTIL MON...WITH MUCH OF THE MOISTURE NOW PROGGED TO MOVE NORTH OF THE REGION. NEAR CLIMO FORECAST FOR TEMPS AND POPS SEEMS BEST BET UNTIL MODELS SHOW SOME CONTINUITY. MARINE...CONTIUED NO PROBLEMS WITH RIDGE AXIS NEARBY. WILL JUST TWEAK PREVIOUS FORECAST. PRELIMS... DAB BB 074/092 074/091 074 243 MCO BB 075/092 074/092 074 443 MLB BB 074/091 074/090 074 132 88 .MLB...NONE. PUBLIC/MARINE...GITTINGER AVIATION/FIRE WX...CRISTALDI
Nearby
Severe Thunderstorm Warnings in Florida, 2001Every severe thunderstorm warning in 2001
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.