Alert archive / Florida / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 80, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Jun 3, 1999, 6:08 PM EDT for Lake County, Florida. It was in force for 32 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 3, 1999, 6:08 PM EDT (22:08 UTC)
- Expired
- Jun 3, 1999, 6:40 PM EDT
- In force
- 32 min
- Issued by
- NWS Melbourne, FL
- Area
- Whole counties
County Lake County, FL
The radar
The Melbourne radar (KMLB), 126 km from the middle of the area, began a volume at 22:10 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 3, 6:25 PM EDT | Hail 0.75 | Bay Lake, FL |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 10.1 hours before the alert went out and 136 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
- 420 J/kg
- Mixed-layer CIN
- -74 J/kg
- Mixed-layer LCL
- 924 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -11 m²/s²
- 0-3 km storm-relative helicity
- 3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
316
WUUS01 KMLB 032209 RRA
SVRMLB
FLC069-032240-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
608 PM EDT THU JUN 3 1999
THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHWESTERN AND SOUTHERN LAKE COUNTY IN EAST CENTRAL FLORIDA
* UNTIL 640 PM EDT
* AT 608 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM JUST SOUTH OF BAY LAKE. MOVEMENT WAS NORTHEAST
AT 15 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
BAY LAKE BY 615 PM
CLERMONT BY 630 PM
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 58
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN.
MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STRONG BUILDING.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 Jun 3, 3:25 PM EDT, 2 hours 43 minutes earlier.
Area forecast discussion, Jun 3, 3:25 PM EDT, 2 hours 43 minutes before
EAST CENTRAL FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MELBOURNE FL 325 PM EDT THU JUN 3 1999 CURRENTLY...SHOWERS AND STORMS ARE FIRING OVER INTERIOR SECTIONS. THEIR SLOW SOUTHWARD MOVEMENT IS LIKELY PRODUCING COPIOUS AMOUNTS OF RAIN OVER SOUTHERN OSCEOLA COUNTY. EAST COAST SEA BREEZE IS PUSHING RAPIDLY ACROSS THE PENINSULA...BEING GIVEN AN EXTRA PUSH FROM THUNDERSTORM OUTFLOW. TONIGHT...SHOWERS AND STORMS WILL DIMINISH THIS EVENING WITH THE LOSS OF SOLAR HEATING. SURFACE WINDS SHOULD VEER TO THE SOUTHEAST AND WEAKEN. MODEL DATA SHOWS BOUNDARY LAYER FLOW WEAKENING AS WELL...SO DO NOT EXPECT COASTAL SHOWERS OVERNIGHT AND WILL KEEP THEM OUT OF FORECAST. SURFACE TROUGH OVER THE MID SOUTH WILL SAG SOUTHEAST OVERNIGHT BUT LOSE ITS MOMENTUM AND UPPER SUPPORT AS H5 SHORT WAVE TROUGH MOVES NE AWAY FROM AREA. FRI...SHORT RANGE MODELS PUSH THE REALLY DEEP MOISTURE OFFSHORE THE SE COAST OF FL...LOWERING PWATS BY A COUPLE TENTHS...BUT OVERALL VALUES STAY PRETTY HEALTHY...ESPECIALLY SOUTH. EXCEPTION IS ETA WHICH DRIES OVERALL AIR MASS OUT A BIT TOO MUCH. MAIN CHANGE WILL BE ANTICYCLONIC VORT CENTER OVER PENINSULA...WHICH SHOULD COMBINE WITH SLIGHTLY DRIER AIR TO KEEP COVERAGE A LITTLE BELOW TODAY. HAVE RE- INTRODUCED LATE NIGHT COASTAL SHOWERS AS THE SFC-850 RIDGE BUILDS ALONG THE SE ATLC COAST AND HEIGHTS BEGIN TO FALL SOUTH OF FLORIDA. SAT...AIR MASS DRIES OUT ANOTHER TENTH OR TWO OVER PENINSULA...BUT STAYS AROUND 1.4 TO 1.5. H50 VORT PROFILE NEUTRAL TO WEAKLY POSITIVE...WHICH WOULD FAVOR NUDGING POPS UP A LITTLE. SUN/MON...AVN MODEL SEEMS TOO AGGRESSIVE WITH SFC TO H50 LOW DEVELOPMENT OVER THE BAHAMAS (A LA THE W CARIB A FEW WEEKS AGO) . FAVOR A WEAKER SOLUTION WITH A WEAK INVERTED TROUGH DRAWING MOISTURE INTO SOUTH FL BUT NOT MUCH FARTHER NORTH. OF COURSE...THIS COULD CHANGE BASED ON LATER MODEL RUNS...BUT WILL NOT BE TOO GUNG-HO IN THE EFP FOR NOW. THANKS FOR COORD MIA. PRELIM CCF S... DAB BB 071/088 071/086 075 60222 MCO BB 070/092 070/089 076 60322 MLB BB 073/088 074/085 077 60222 .MLB...NONE. KELLY/CRISTALDI
In the hours before
Local storm report, Jun 3, 5:58 PM EDT, 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MELBOURNE FL
558 PM EDT THU JUN 03 1999
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0535 PM KISSIMMEE FL 1.75 INCH HAIL
06/03/99 OSCEOLA GOLF BALL HAIL REPORTED BY
LOCAL TELEVISION STATION.Local storm report, Jun 3, 5:58 PM EDT, 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MELBOURNE FL
558 PM EDT THU JUN 03 1999
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0535 PM KISSIMMEE FL 1.75 INCH HAIL
06/03/99 OSCEOLA GOLF BALL HAIL REPORTED BY
LOCAL TELEVISION STATION.The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 3, 5:35 PM EDT | Severe Thunderstorm Warning | MLB | Orange, Osceola | 45 min |
| Jun 3, 6:51 PM EDT | Severe Thunderstorm Warning | MLB | Lake | 49 min |
Nearby
Severe Thunderstorm Warnings in Florida, 1999Every severe thunderstorm warning in 1999
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.