Alert archive / Florida / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 93, NWS Melbourne, FL

July 26, 1997Brevard County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jul 26, 1997, 5:28 PM EDT for Brevard County, Florida. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 26, 1997, 5:28 PM EDT (21:28 UTC)
Expired: Jul 26, 1997, 6:25 PM EDT
In force: 57 min
Issued by: NWS Melbourne, FL
Area: Whole counties

County Brevard County, FL

The radar

The Melbourne radar (KMLB), 21 km from the middle of the area, began a volume at 21:32 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

Tampa Bay, FL (KTBW), launched 12:00Z, 9.5 hours before the alert went out and 180 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1842 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 884 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -27 m²/s²
0-3 km storm-relative helicity: -29 m²/s²
Significant tornado parameter: -0.1
Supercell composite: -0.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMLB 262128 RRA
SVRMLB
FLC009-262225-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
528 PM EDT SAT JUL 26 1997

THE NATIONAL WEATHER SERVICE IN MELBOURNE FL HAS ISSUED A
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING EFFECTIVE UNTIL
625 PM EDT FOR THE FOLLOWING LOCATIONS...

IN EAST CENTRAL FLORIDA

   ...SOUTHERN BREVARD COUNTY

AND FOR MARINE INTERESTS ON THE INTRACOASTAL WATERS AND NEARSHORE
ATLANTIC FROM...

  ...MELBOURNE BEACH TO SEBASTIAN INLET

 
AT 527 PM...DOPPLER RADAR SHOWED A CLUSTER OF STRONG THUNDERSTORMS
ENTERING SOUTHWEST BREVARD COUNTY. RADAR ESTIMATES THAT THESE STORMS
ARE LIKELY PRODUCING WINDS GUSTS OF 50 TO 60 MPH. THE STORMS WILL
AFFECT AREAS FROM MELBOURNE/PALM BAY SOUTH TO GRANT AND BAREFOOT BAY
...AND THEN WILL MOVE ACROSS THE INTRACOASTAL WATERWAY AND INTO THE
ATLANTIC.

THESE STORMS WILL ALSO PRODUCE TORRENTAIL RAINFALL AND FREQUENT
DEADLY CLOUD TO GROUND LIGHTNING. STAY INDOORS UNTIL THESE STORMS
PASS.
 
AS THESE THUNDERSTORMS CROSS THE INTRACOASTAL WATERS AND INTO THE
ATLANTIC...THEY WILL PRODUCE STRONG GUSTY WINDS, ROUGH SEAS, HEAVY
DOWNPOURS AND DANGEROUS LIGHTNING. TRY TO AVOID THESE STORMS IF
POSSIBLE. IF YOU GET CAUGHT...MAKE SURE ALL SAFETY GEAR IS AVAILABLE
AND THAT LIFE JACKETS ARE BEING WORN BY YOU AND YOUR CREW.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 58
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF A STRONG BUILDING. HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.


CRISTALDI

Nearby

Severe Thunderstorm Warnings in Florida, 1997 Every severe thunderstorm warning in 1997

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.