Alert archive / Florida / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 18, NWS Melbourne, FL

May 14, 1991Brevard County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at May 14, 1991, 3:22 PM EDT for Brevard County, Florida. It was in force for 68 min.

The area

The counties it named.

The facts

Issued
May 14, 1991, 3:22 PM EDT (19:22 UTC)
Expired
May 14, 1991, 4:30 PM EDT
In force
68 min
Issued by
NWS Melbourne, FL
Area
Whole counties

County Brevard County, FL

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 7.4 hours before the alert went out and 27 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.

Skew-T log-pSkew-T log-p diagram, Cape Canaveral, FL at 12:00Z on 1991-05-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 709 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cape Canaveral, FL at 12:00Z on 1991-05-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -27 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
709 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
717 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-27 m²/s²
0-3 km storm-relative helicity
-17 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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, May 14, 2:08 PM EDT, 1 hour 14 minutes before
FLZ012-141930-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DAYTONA BEACH FL
208 PM EDT TUE MAY 14 1991

...THIS STATEMENT IS FOR VOLUSIA COUNTY...

STRONG THUNDERSTORMS WERE MOVING THROUGH CENTRAL AND SOUTHERN VOLUSIA
COUNTY.

THESE THUNDERSTOMS WERE PRODUCING VERY HEAVY DOWNPOURS...STRONG AND
GUSTY WINDS AND DANGEROUS LIGHTNING.

THESE THUNDERSTORMS WERE MOVING EAST AT 10 MPH AND WILL BE MOVING
OUT OVER THE COASTAL WATERS OF VOLUSIA CO7UNTY DURING THE NEXT HOUR.

BOATERS SHOULD BE ALERT FOR STRONG WINDS AND ROUGH SEAS AS THE MOVE
OFFSHORE.
Special weather statement, May 14, 2:48 PM EDT, 34 minutes before
FLZ017-011-016-012-009-141945-

SPECIAL EAST CENTRAL FLORIDA WEATHER UPDATE
NATIONAL WEATHER SERVICE MELBOURNE FL
248 PM EDT TUE MAY 14 1991

...THUNDERSTORMS WITH VERY HEAVY RAIN OVER OSCEOLA COUNTY...

AT 235 PM AN AREA OF SHOWERS AND THUNDERSTORMS...SOME WITH VERY
HEAVY RAIN AND POSSIBLE GUSTY WINDS WERE FROM COCOA BEACH TO HOLOPAW
...ST CLOUD AND LAKELAND. THE STRONGEST STORMS WERE JUST SOUTH OF
KISSIMMEE TO WEST OF HOLOPAW. PERSONS IN OSCEOLA COUNTY SHOULD
BE AWARE OF THESE STORMS AS THEY MOVE EAST ACROSS THE COUNTY AND
WATCH FOR PONDING OF WATER ON ROADWAYS.

OTHER SHOWERS AND THUNDERSTORMS EXTENDED FROM 30 MILES OFFSHORE OF
DAYTONA BEACH TO DELAND TO CLERMONT NORTH TO BELLVIEW. SOME OF THESE
STORMS ALSO CONTAIN HEAVY DOWNPOURS. ALL THE SHOWERS AND
THUNDERSTORMS WERE MOVING EAST AT 10 MPH.

OVER THE NEXT TWO HOURS SHOWERS AND THUNDERSTORMS WILL CONTINUE
OVER MUCH OF EAST CENTRAL FLORIDA WITH THE STRONGEST ACTIVITY
OVcER NORTHERN AND CENTRAL OSCEOLA COUNTY AND 15 MILES NORTH OF
LEESBURG. NO RAIN IS EXPECTED IN AN AREA BOUNDED FROM TITUSVILLE TO
ORLANDO TO LONGWOOD.

R.SMITH

The office that day

Everything else NWS Melbourne, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 14, 5:18 PM EDTTornado WarningMLBPalm Beach57 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; the sounding from the Mesonet's radiosonde archive.