Alert archive / Florida / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 111, NWS Melbourne, FL

August 23, 1993Flagler County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Aug 23, 1993, 2:06 PM EDT for Flagler County, Florida. It was in force for 69 min.

The area

The counties it named.

The facts

Issued
Aug 23, 1993, 2:06 PM EDT (18:06 UTC)
Expired
Aug 23, 1993, 3:15 PM EDT
In force
69 min
Issued by
NWS Melbourne, FL
Area
Whole counties

County Flagler County, FL

The nearest sounding before it

Jacksonville, FL (KAYS), launched 12:00Z, 6.1 hours before the alert went out and 121 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, Jacksonville, FL at 12:00Z on 1993-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1278 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, Jacksonville, FL at 12:00Z on 1993-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -30 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
1278 J/kg
Mixed-layer CIN
-85 J/kg
Mixed-layer LCL
959 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-30 m²/s²
0-3 km storm-relative helicity
14 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, Aug 23, 1:30 PM EDT, 36 minutes before
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Special weather statement, Aug 23, 1:33 PM EDT, 33 minutes before
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Special weather statement, Aug 23, 2:01 PM EDT, 5 minutes before
FLZ011-231900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
201 PM EDT MON AUG 23 1993

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

AT 200 PM...NAITONAL WEATHER SERVICE RADAR SHOWED A BAND OF STRONG
THUNDERSTORMS EXTENDING FROM SANFORD NORTH TO PALATKA. OTHER
THUNDERSTORMS WERE DEVELOPING BETWEEN SANFORD AND OCALA. THE
THUNDERSTORMS WERE MOVING TO THE SOUTHWEST AT 10 MPH AND WILL
MOVE INTO LAKE..SEMINOLE..AND ORANGE COUNTIES DURING THE NEXT
HOUR AND EXTEND FROM BETWEEN LADY LAKE AND LEESBURG TO BETWEEN
SANFORD AND ORLANDO.

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.

STAY TUNED TO NOAA WEATHER RADIO...OR YOUR LOCAL RADIO OR
TELEVISION STATIONS FOR THE LATEST UPDATES CONCERNING THIS
DEVELOPING WEATHER SITUATION.

ELSEWHERE...SCATTERED THUNDERSTORMS WERE OVER THE ATLANTIC
MORE THAN 30 MILES OFFSHORE FROM CAPE CANAVERAL TO MELBOURNE.
MOVEMENT WAS TO THE SOUTHWEST AT 10 MPH.

PAF
Special weather statement, Aug 23, 2:01 PM EDT, 5 minutes before
FLZ011-231900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
201 PM EDT MON AUG 23 1993

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

AT 200 PM...NAITONAL WEATHER SERVICE RADAR SHOWED A BAND OF STRONG
THUNDERSTORMS EXTENDING FROM SANFORD NORTH TO PALATKA. OTHER
THUNDERSTORMS WERE DEVELOPING BETWEEN SANFORD AND OCALA. THE
THUNDERSTORMS WERE MOVING TO THE SOUTHWEST AT 10 MPH AND WILL
MOVE INTO LAKE..SEMINOLE..AND ORANGE COUNTIES DURING THE NEXT
HOUR AND EXTEND FROM BETWEEN LADY LAKE AND LEESBURG TO BETWEEN
SANFORD AND ORLANDO.

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.

STAY TUNED TO NOAA WEATHER RADIO...OR YOUR LOCAL RADIO OR
TELEVISION STATIONS FOR THE LATEST UPDATES CONCERNING THIS
DEVELOPING WEATHER SITUATION.

ELSEWHERE...SCATTERED THUNDERSTORMS WERE OVER THE ATLANTIC
MORE THAN 30 MILES OFFSHORE FROM CAPE CANAVERAL TO MELBOURNE.
MOVEMENT WAS TO THE SOUTHWEST AT 10 MPH.

PAF

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 23, 3:14 PM EDTSevere Thunderstorm WarningMLBPalm Beach61 min
Aug 23, 4:12 PM EDTSevere Thunderstorm WarningMLBMarion33 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.