Alert archive / Florida / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 12, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Apr 30, 2002, 4:40 PM EDT for Orange County, Florida. It was in force for 65 min. 2 reports 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
- Apr 30, 2002, 4:40 PM EDT (20:40 UTC)
- Expired
- Apr 30, 2002, 5:45 PM EDT
- In force
- 65 min
- Issued by
- NWS Melbourne, FL
- Area
- Whole counties
County Orange County, FL
The radar
The Melbourne radar (KMLB), 79 km from the middle of the area, began a volume at 20:44 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 |
|---|---|---|---|
| Apr 30, 4:55 PM EDT | Hail 0.75 | Orlando, FL | |
| Apr 30, 5:00 PM EDT | Thunderstorm Wind 70 E | Orlando, FL | A severe thunderstorm produced a broad area of downburst winds along Highway 50 a few miles east of Orlando. The winds blew down dozens of trees, some damaging mobile homes. The winds also damaged carports, screen rooms and roofs. |
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
Cape Canaveral, FL (KXMR), launched 12:00Z, 8.7 hours before the alert went out and 81 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
- 1 J/kg
- Mixed-layer CIN
- -200 J/kg
- Mixed-layer LCL
- 985 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- -22 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
078 WUUS52 KMLB 302040 SVRMLB FLC095-302145- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MELBOURNE FL 438 PM EDT TUE APR 30 2002 THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN ORANGE COUNTY IN EAST CENTRAL FLORIDA * UNTIL 545 PM EDT. * AT 433 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 6 MILES NORTHWEST OF BITHLO...OR NEAR OVIEDO...MOVING SOUTHEAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE... NEAR BITHLO AT 450 PM EDT NEAR CHRISTMAS AT 510 PM EDT VERY LARGE HAIL UP TO THE SIZE OF GOLFBALLS HAVE BEEN REPORTED WITH THIS STORM AS IT MOVED THROUGH SEMINOLE COUNTY. LARGE HAIL...EXCESSIVE LIGHTNING AND DAMAGING WINDS ARE LIKELY. TAKE COVER IN A STURDY BUILDING UNTIL THE STORM PASSES. $$ LAT...LON 2863 8100 2862 8130 2835 8119 2837 8088 PB
The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 3:43 PM EDT | Severe Thunderstorm Warning | MLB | Seminole | 47 min |
| Apr 30, 4:31 PM EDT | Severe Thunderstorm Warning | MLB | Seminole | 29 min |
| Apr 30, 5:09 PM EDT | Tornado Warning | MLB | Orange | 36 min |
| Apr 30, 5:30 PM EDT | Tornado Warning | MLB | Osceola | 45 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2002Every severe thunderstorm warning in 2002
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.