Alert archive / Florida / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 112, NWS Melbourne, FL

September 10, 1992Volusia County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Sep 10, 1992, 3:00 PM EDT for Volusia County, Florida. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
Sep 10, 1992, 3:00 PM EDT (19:00 UTC)
Expired
Sep 10, 1992, 4:00 PM EDT
In force
60 min
Issued by
NWS Melbourne, FL
Area
Whole counties

County Volusia County, FL

The radar

The Melbourne radar (KMLB), 116 km from the middle of the area, began a volume at 18:59 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

Jacksonville, FL (KAYS), launched 12:00Z, 7.0 hours before the alert went out and 168 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 1992-09-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1050 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 1992-09-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -35 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
1050 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
536 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
-35 m²/s²
0-3 km storm-relative helicity
-33 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KDAB 101901
SVRDAB
FLC127-102000-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE DAYTONA BEACH FL
300 PM EDT THU SEP 10 1992
 
THE NATIONAL WEATHER SERVICE IN DAYTONA BEACH HAS ISSUED A
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
EFFECTIVE UNTIL  400 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN EAST CENTRAL FLORIDA
 
   ...VOLUSIA COUNTY
 
  AND FOR MARINE INTERESTS ON THE COASTAL WATERS FROM...
 
   ...DAYTONA BEACH SOUTH TO PONCE DE LEON INLET AND MOSQUITO
   LAGOON.
 
A CLUSTER OF SEVERE THUNDERSTORMS WAS ALONG THE EAST COAST AND
OVER THE COASTAL WATERS FROM DAYTONA BEACH SOUTH TO NEW SMYRNA
BEACH AND OAK HILL...REACHING INLAND TO OSTEEN.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
 
AS THE THUNDERSTORMS MOVE OUT OVER THE COASTAL WATERS...BOATERS
IN THE THREATENED AREA CAN EXPECT STRONG WINDS...ROUGH SEAS AND
LIGHTNING. BOATERS SHOULD TAKE NECESSARY ACTION TO AVOID THE
DANGEROUS THUNDERSTORMS.

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 10, 1:38 PM EDT, 1 hour 22 minutes before
FLZ012-101945-

SPECIAL WEATHER AND MARINE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DAYTONA BEACH FL
135 PM EDT THU SEP 10 1992

...THIS STATEMENT IS FOR FLAGLER AND VOLUSIA COUNTIES...

STRONG THUNDERSTORMS HAVE DEVELOPED OVER MOST OF FLAGLER COUNTY
AND OVER THE NORTH PART OF VOLUSIA COUNTY...MAINLY FROM JUST WEST
OF DAYTONA BEACH INLAND TO BARBERVILLE AND LAKE GEORGE.

THESE THUNDERSTORMS WERE PUSHING EAST AT 10 MPH AND WERE BEGINNING
TO MOVE OVER THE COASTAL WATERS FROM MARINELAND SOUTH TO FLAGLER
BEACH AND DAYTONA BEACH AND WILL SPREAD FARTHER SOUTH ALONG THE
COAST DURING THE MID AFTERNOON.

THESE STORMS WILL LIKELY PRODUCE STRONG AND GUSTY WINDS...DANGEROUS
LIGHTNING AND VERY HEAVY DOWNPOURS FOR THE NEXT COUPLE OF HOURS
AS THEY MOVE THROUGH THE MENTIONED AREA.

BOATERS ON THE INLAND WATERWAYS AND ON THE COASTAL WATERS...
MAINLY FROM MARINELAND SOUTH TO DAYTONA BEACH AND PONCE DE LEON
INLET SHOULD BE ALERT FOR STRONG WINDS AND ROUGH SEAS AND LIGHTING
IN THE VICINITY OF THESE THUNDERSTORMS.

REMEMBER...THE SAFEST PLACE DURING A THUNDERSTORM IS INDOORS AND
AWAY FROM WINDOWS AND DOORS.  MOTORISTS SHOULD DRIVE WITH CAUTION
IN THE HEAVY DOWNPOURS AND BE ALERT FOR PONDING OF WATER ON THE
ROADWAYS.
Special weather statement, Sep 10, 2:43 PM EDT, 17 minutes before
FLZ017-011-016-012-009-101945-

SPECIAL EAST CENTRAL FLORIDA WEATHER UPDATE
NATIONAL WEATHER SERVICE MELBOURNE FL
244 PM EDT THU SEP 10 1992

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

AT 240 PM STRONG THUNDERSTORMS WERE SCATTERED FROM ST AUGUSTINE TO
DAYTONA BEACH AND EDGEWATER...EXTENDING ACROSS ORLANDO TO MASCOTTE
AND ZEPHYRHILLS. A SEVERE THUNDERSTORM WARNING IS IN EFFECT FOR
VOLUSIA COUNTY UNTIL 3 PM. ALL OF THIS ACTVITY WAS MOVING EAST AT
10 MPH.

BETWEEN 3 AND 5 PM...STRONG THUNDERSTORMS WILL CONTINUE TO INCREASE
OVER EAST CENTRAL FLORIDA WITH THE STRONGEST STRORMS MOVING INTO
SOUTHERN LAKE COUNTY AND CONTINUING OVER VOLUSIA COUNTY. THESE
THUNDERSTORMS WILL CONTAIN VEdRY HEAVY RAIN...FREQUENT LIGHTNING
AND POSSIBLE STRONG GUSTY WINDS AND SMALL HAIL. THUNDERSTORMS ARE
ALSO INTENSIFYING OVER ORANGE AND SEMINOLE COUNTIES AND MAY
PRODUCE SMALL HAIL AND GUSTY WINDS WITH FRQUENT LIGHTNING AS WELL.

R.SMITH

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 10, 2:05 PM EDTSevere Thunderstorm WarningMLBVolusia55 min
Sep 10, 3:48 PM EDTSevere Thunderstorm WarningMLBBrevard57 min

Nearby

Severe Thunderstorm Warnings in Florida, 1992Every severe thunderstorm warning in 1992

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.