Alert archive / Florida / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 125, NWS Melbourne, FL

September 27, 1993Volusia County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Sep 27, 1993, 4:00 PM EDT for Volusia County, Florida. It was in force for 45 min.

The area

The counties it named.

The facts

Issued
Sep 27, 1993, 4:00 PM EDT (20:00 UTC)
Expired
Sep 27, 1993, 4:45 PM EDT
In force
45 min
Issued by
NWS Melbourne, FL
Area
Whole counties

County Volusia County, FL

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 8.0 hours before the alert went out and 194 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, Tampa Bay, FL at 12:00Z on 1993-09-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 989 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, Tampa Bay, FL at 12:00Z on 1993-09-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 74 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
989 J/kg
Mixed-layer CIN
-46 J/kg
Mixed-layer LCL
983 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
74 m²/s²
0-3 km storm-relative helicity
79 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, Sep 27, 2:03 PM EDT, 1 hour 57 minutes before
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Special weather statement, Sep 27, 2:06 PM EDT, 1 hour 54 minutes before
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Special weather statement, Sep 27, 2:57 PM EDT, 1 hour 3 minutes before
FLZ009-011-012-016-017-501-272000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
257 PM EDT MON SEP 27 1993

...STRONG THUNDERSTORMS OVER EAST CENTRAL FLORIDA....

AT 300 PM NATIONAL WEATHER SERVICE RADAR IN MELBOURNE WAS
INDICATING STRONG THUNDERSTORMS OVER EAST CENTRAL FLORIDA. THE
STRONGEST STORMS WERE OVER ORANGE AND LAKE COUNTIES FROM MOUNT
PLYMOUTH TO CLERMONT...AND ALONG THE COAST FROM JUST OF NORTH OF
VERO BEACH TO FORT PIERCE. THE THUNDERSTORMS WERE MOVING TO THE
NORTHEAST AT 15 MPH.

IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A
STORM APPROACHES. MOTORISTS SHOULD REMAIN ALERT FOR REDUCED
VISIBILITIES DURING HEAVY RAIN. SOME STREETS MAY FLOOD QUICKLY.

RESIDENTS SHOULD BE ALERT FOR THESE THUNDERSTORMS AS THEY CROSS
THE AREA. THEY CAN PRODUCE DANGEROUS CLOUD TO GROUND
LIGHTNING...HEAVY RAIN...STRONG GUSTY WINDS AND POSSIBLY SMALL
HAIL. MONITOR NOAA WEATHER RADIO OR LOCAL RADIO OR TELEVISION
STATIONS FOR LATER STATEMENTS OR POSSIBLE WARNINGS.

MARINERS SHOULD BE ALERT TO THESE THUNDERSTORMS AND SEEK SAFE
HARBOUR IF NECESSARY

ELSEWHERE ACROSS THE REGION...SHOWERS AND THUNDERSTORMS WERE ALONG
AND OFF THE COAST FROM OAK HILL TO PLAYALINDA BEACH. OTHER WIDELY
SCATTERED SHOWERS AND THUNDERSTORMS WERE FROM SANFORD TO
KISSIMMEE.
Special weather statement, Sep 27, 3:03 PM EDT, 57 minutes before
FLZ009-011-012-016-017-501-272000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
257 PM EDT MON SEP 27 1993

...STRONG THUNDERSTORMS OVER EAST CENTRAL FLORIDA....

AT 300 PM NATIONAL WEATHER SERVICE RADAR IN MELBOURNE WAS
INDICATING STRONG THUNDERSTORMS OVER EAST CENTRAL FLORIDA. THE
STRONGEST STORMS WERE OVER ORANGE AND LAKE COUNTIES FROM MOUNT
PLYMOUTH TO CLERMONT...AND ALONG THE COAST FROM JUST OF NORTH OF
VERO BEACH TO FORT PIERCE. THE THUNDERSTORMS WERE MOVING TO THE
NORTHEAST AT 15 MPH.

IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A
STORM APPROACHES. MOTORISTS SHOULD REMAIN ALERT FOR REDUCED
VISIBILITIES DURING HEAVY RAIN. SOME STREETS MAY FLOOD QUICKLY.

RESIDENTS SHOULD BE ALERT FOR THESE THUNDERSTORMS AS THEY CROSS
THE AREA. THEY CAN PRODUCE DANGEROUS CLOUD TO GROUND
LIGHTNING...HEAVY RAIN...STRONG GUSTY WINDS AND POSSIBLY SMALL
HAIL. MONITOR NOAA WEATHER RADIO OR LOCAL RADIO OR TELEVISION
STATIONS FOR LATER STATEMENTS OR POSSIBLE WARNINGS.

MARINERS SHOULD BE ALERT TO THESE THUNDERSTORMS AND SEEK SAFE
HARBOUR IF NECESSARY

ELSEWHERE ACROSS THE REGION...SHOWERS AND THUNDERSTORMS WERE ALONG
AND OFF THE COAST FROM OAK HILL TO PLAYALINDA BEACH. OTHER WIDELY
SCATTERED SHOWERS AND THUNDERSTORMS WERE FROM SANFORD TO
KISSIMMEE.
Special weather statement, Sep 27, 3:16 PM EDT, 44 minutes before
FLZ011-272020-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
316 PM EDT MON SEP 27 1993

...VERY STRONG THUNDERSTORMS POSSIBLE IN THE ORLANDO METRO AREA
UNTIL 430 PM...

NATIONAL WEATHER SERVICE DOPPLER RADAR WAS INDICATING CONDITIONS
ARE BECOMING FAVORABLE FOR VERY STRONG THUNDERSTORM DEVELOPMENT IN
THE ORLANDO AREA UNTIL 430 PM THIS EVENING. THESE THUNDERSTORMS
WILL BE CAPABLE OF PRODUCING VERY STRONG WINDS...DANGEROUS CLOUD TO
GROUND LIGHTNING AND HAIL.

RESIDENTS ACROSS THE ORLANDO AREA SHOULD BE ALERT FOR THESE STORMS
AND SEEK SHELTER IF THREATENING WEATHER MOVES INTO THE AREA. STAY
TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA FOR LATER STATEMENTS AND
POSSIBLE WARNINGS.
Special weather statement, Sep 27, 3:17 PM EDT, 43 minutes before
FLZ011-272020-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
316 PM EDT MON SEP 27 1993

...VERY STRONG THUNDERSTORMS POSSIBLE IN THE ORLANDO METRO AREA
UNTIL 430 PM...

NATIONAL WEATHER SERVICE DOPPLER RADAR WAS INDICATING CONDITIONS
ARE BECOMING FAVORABLE FOR VERY STRONG THUNDERSTORM DEVELOPMENT IN
THE ORLANDO AREA UNTIL 430 PM THIS EVENING. THESE THUNDERSTORMS
WILL BE CAPABLE OF PRODUCING VERY STRONG WINDS...DANGEROUS CLOUD TO
GROUND LIGHTNING AND HAIL.

RESIDENTS ACROSS THE ORLANDO AREA SHOULD BE ALERT FOR THESE STORMS
AND SEEK SHELTER IF THREATENING WEATHER MOVES INTO THE AREA. STAY
TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA FOR LATER STATEMENTS AND
POSSIBLE WARNINGS.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 27, 4:52 PM EDTTornado WarningMLBBrevard38 min

Nearby

Severe Thunderstorm Warnings in Florida, 1993Every severe thunderstorm warning in 1993

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.