Alert archive / Florida / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 53, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Aug 9, 1991, 2:25 PM EDT for Orange County, Florida. It was in force for 65 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
- Aug 9, 1991, 2:25 PM EDT (18:25 UTC)
- Expired
- Aug 9, 1991, 3:30 PM EDT
- In force
- 65 min
- Issued by
- NWS Melbourne, FL
- Area
- Whole counties
County Orange County, FL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 9, 3:40 PM EDT | Thunderstorm Wind 0 | Orange, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 6.4 hours before the alert went out and 139 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
- 3206 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 629 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 1 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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.
In the hours before
Special weather statement, Aug 9, 1:20 PM EDT, 1 hour 5 minutes before
FLZ009-091915- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DAYTONA BEACH FL 119 PM EDT FRI AUG 9 1991 ...THIS STATEMENT IS FOR MARION COUNTY... A FEW STRONG THUNDERSTORMS WERE OVER THE SOUTHWEST PART OF MARION COUNTY NEAR OCALA AND SUMMERFIELD. THEY WERE MOVING EAST LESS THAN 10 MPH. THESE THUNDERSTORMS MAY PRODUCE HEAVY RAIN...GUSTY WINDS TO 35 MPH... DANGEROUS LIGHTNING STRIKES AND HAIL. DUE TO THE SLOW MOVEMENT BRIEF FLOO#DING COULD OCCUR IN AREAS THAT USUALLY FLOOD DURING HEAVY DOWNPOURS.
Special weather statement, Aug 9, 1:44 PM EDT, 41 minutes before
FLZ017-011-016-012-009-091845- SPECIAL EAST CENTRAL FLORIDA WEATHER UPDATE NATIONAL WEATHER SERVICE MELBOURNE FL 142 PM EDT FRI AUG 9 1991 ...STRONG THUNDERSTORMS MOVING INTO LAKE COUNTY... AT 140 PM THUNDERSTORMS WITH VERY HEAVY RAIN AND FREQUENT LIGHTNING WERE FROM JUST WEST OF WEIRSDALE TO MASCOTTE AND 30 MILES SOUTHWEST OF CLERMONT. THESE STORMS MAY ALSO PRODUCE STRONG GUSTY WINDS AND SMALL HAIL. THE STORMS WERE MOVING EAST AT LESS THAN 10 MPH...AND WILL MOVE ACROSS LAKE COUNTY DURING THE NEXT 1 TO 2 HOURS. PERSONS IN THE PATH OF THESE STORMS SHOULD MOVE INDOORS TO AVOID LIGHTNING. ELSEWHERE OVER EAST CENTRAL FLORIDA SCATTERED SHOWERS AND THUNDERSTORMS WERE FROM ASTOR PARK TO BARBERVILLE...NEAR LAKE KISSIMMEE...AND ALONG THE COAST FROM THE SPACE CENTER TO MELBOURNE AND VERO BEACH. SOME OF THESE STORMS WERE PRODUCING VERY HEAVY RAIN. BOATERS AND OTHER MARINE INTERESTS FROM CAPE CANAVERAL TO VERO BEACH SHOULD BE ALERT FOR THESE THUNDERSTORMS...AND HEAD FOR SAFE HARBOR IF THREATENING WEATHER APPROACHES. BETWEEN 2 AND 4 PM...SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE TO INCREASE OVER EAST CENTRAL FLORIDA...SOME OF WHICH WILL CONTAIN VERY HEAVY RAIN AND STKRONG WINDS. R.SMITH
The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 3:31 PM EDT | Severe Thunderstorm Warning | MLB | Orange, Osceola | 29 min |
| Aug 9, 4:00 PM EDT | Severe Thunderstorm Warning | MLB | Brevard | 60 min |
| Aug 9, 4:00 PM EDT | Severe Thunderstorm Warning | MLB | Osceola | 45 min |
| Aug 9, 4:36 PM EDT | Severe Thunderstorm Warning | MLB | Saint Lucie | 69 min |
| Aug 9, 4:59 PM EDT | Tornado Warning | MLB | Brevard | 31 min |
| Aug 9, 5:29 PM EDT | Severe Thunderstorm Warning | MLB | Okeechobee | 61 min |
| Aug 9, 5:45 PM EDT | Severe Thunderstorm Warning | MLB | Osceola | 45 min |
| Aug 9, 6:12 PM EDT | Severe Thunderstorm Warning | MLB | Martin | 63 min |
| Aug 9, 6:15 PM EDT | Severe Thunderstorm Warning | MLB | Indian River | 43 min |
| Aug 9, 6:15 PM EDT | Severe Thunderstorm Warning | MLB | Brevard | 60 min |
Nearby
Severe Thunderstorm Warnings in Florida, 1991Every severe thunderstorm warning in 1991
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.