Alert archive / Florida / Flash Flood Warnings in 1998
Flash Flood Warning 3, NWS Melbourne, FL
NWS Melbourne, FL issued this flash flood warning at Feb 23, 1998, 12:40 AM EST for Orange County, Seminole County, Florida. It was in force for 3 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
- Feb 23, 1998, 12:40 AM EST (05:40 UTC)
- Expired
- Feb 23, 1998, 3:40 AM EST
- In force
- 3 hr
- Issued by
- NWS Melbourne, FL
- Area
- Whole counties
Counties Orange County, FL, Seminole County, FL
The radar
The Melbourne radar (KMLB), 83 km from the middle of the area, began a volume at 05:40 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
Tampa Bay, FL (KTBW), launched 00:00Z, 5.7 hours before the alert went out and 150 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
- 906 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 1127 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- 239 m²/s²
- 0-3 km storm-relative helicity
- 283 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 14.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMLB 230540 FFWMLB FLC095-117-230840- BULLETIN - EAS ACTIVATION REQUESTED FLOOD WARNING NATIONAL WEATHER SERVICE MELBOURNE FL 1240 AM EST MON FEB 23 1998 THE NATIONAL WEATHER SERVICE IN MELBOURNE FL HAS ISSUED A FLOOD WARNING EFFECTIVE UNTIL 340 AM EST FOR PEOPLE IN THE FOLLOWING LOCATION... IN EAST CENTRAL FLORIDA ...SEMINOLE COUNTY ...ORANGE COUNTY AT 1235 AM...THUNDERSTORMS WITH VERY HEAVY RAINFALL WILL MOVE NORTHEAST ACROSS METRO ORLANDO. THIS COMBINED WITH RAINFALL FROM PREVIOUS STORMS IN THE PAST FEW HOURS WILL AGGRAVATE ONGOING FLOODING FROM THE PAST WEEK AND CAUSE ADDITIONAL AREAS TO EXPERIENCE FLOODING. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND.
The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 22, 9:45 PM EST | Tornado Warning | MLB | Lake | 65 min |
| Feb 22, 10:22 PM EST | Tornado Warning | MLB | Volusia | 53 min |
| Feb 22, 11:20 PM EST | Tornado Warning | MLB | Volusia | 45 min |
| Feb 22, 11:27 PM EST | Tornado Warning | MLB | Lake | 63 min |
| Feb 22, 11:37 PM EST | Tornado Warning | MLB | Orange | 63 min |
| Feb 22, 11:56 PM EST | Tornado Warning | MLB | Seminole | 59 min |
| Feb 23, 12:14 AM EST | Tornado Warning | MLB | Volusia | 61 min |
| Feb 23, 12:21 AM EST | Flash Flood Warning | MLB | Volusia | 3 hr |
| Feb 23, 12:22 AM EST | Tornado Warning | MLB | Osceola | 58 min |
| Feb 23, 12:40 AM EST | Tornado Warning | MLB | Orange | 45 min |
| Feb 23, 1:19 AM EST | Tornado Warning | MLB | Orange, Osceola | 61 min |
| Feb 23, 1:23 AM EST | Tornado Warning | MLB | Brevard | 62 min |
| Feb 23, 2:27 AM EST | Tornado Warning | MLB | Brevard | 48 min |
| Feb 23, 3:04 AM EST | Tornado Warning | MLB | Osceola | 56 min |
| Feb 23, 3:16 AM EST | Tornado Warning | MLB | Brevard | 59 min |
Nearby
Flash Flood Warnings in Florida, 1998Every flash flood warning in 1998
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.