Alert archive / Florida / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 84, NWS Tampa Bay, FL

June 24, 1997Pinellas County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Jun 24, 1997, 5:13 PM EDT for Pinellas County, Florida. It was in force for 47 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
Jun 24, 1997, 5:13 PM EDT (21:13 UTC)
Expired
Jun 24, 1997, 6:00 PM EDT
In force
47 min
Issued by
NWS Tampa Bay, FL
Area
Whole counties

County Pinellas County, FL

The radar

The Tampa radar (KTBW), 40 km from the middle of the area, began a volume at 21:13 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, 9.2 hours before the alert went out and 40 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 1997-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1382 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 1997-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 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
1382 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
688 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
35 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.

427 
WUUS1 KTBW 242115 RRA
SVRTBW
FLC103-FLZ504-242200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
513 PM EDT TUE JUN 24 1997

THE NATIONAL WEATHER SERVICE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 600 PM EDT

FOR PEOPLE IN THE FOLLOWING LOCATION(S)

IN WEST CENTRAL FLORIDA

   ...PINELLAS COUNTY


FOR MARINERS ON THE GULF COASTAL WATERS FROM
   ...ANCLOTE KEY TO THE MOUTH OF TAMPA BAY
 
AT 510 PM EDT...A SEVERE THUNDERSTORM WAS INDICATED BY NATIONAL
WEATHER SERVICE DOPPLER RADAR IN THE VICINITY OF CLEARWATER MOVING
NORTH AT 15 MPH.

THIS STORM IS EXPECTED TO BE NEAR...
CLEARWATER               AROUND 510 PM EDT
DUNEDIN                  AROUND 530 PM EDT
OLDSMAR                  AROUND 531 PM EDT

AT 510 PM PEA SIZE HAIL WAS REPORTED AT ROUTE 19 AND DREW STREET.
 
BY DEFINITION...SEVERE THUNDERSTORMS HAVE WINDS OF 58 MPH OR GREATER
AND/OR DIME SIZE HAIL OR LARGER. IF THIS STORM APPROACHES YOU
AREA...GO INDOORS AND STAY THERE UNTIL THE STORM PASSES.

&

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.

NWS Tampa Bay, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 24, 2:54 PM EDT, 2 hours 19 minutes earlier.

Area forecast discussion, Jun 24, 2:54 PM EDT, 2 hours 19 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAMPA BAY-RUSKIN, FL
250 PM EDT TUE JUN 24 1997

SUGGESTIONS...EVG POPS 40% TIL MID-EVG CSTL/30% INLAND TIL EARLY EVG.
WEDNESDAY...50% CSTL/30-40% INLAND. THURSDAY...30-40% AREA WIDE.

DISCUSSION...CURRENTLY SHWRS & TSTMS TREKKING TOWARD THE FCST AREA. SEA
BREEZE JUST GETTING GOING RIGHT ALONG THE COAST. SHOULD ONLY MAKE ITS WAY
ABOUT 5 MILES INLAND...AND THIS WILL BE THE FOCUS AS STORMS FIRST REACH
FMY AREA THEN RIPPLE NORTHWARD UP THE COAST...AFFECTING VENICE-SRQ-PIE-
TPA-RRF STARTING ABOUT 5PM AND ENDING ABOUT 7PM. PROBABLE RAIN TOTALS TO
2IN IN LOCAL SPOTS IN THAT "HOT ZONE". LEFTOVER LGHT RAIN FOR CSTL AREAS
SHOULD BE GONE BY 9PM (EXCEPT AGREE W/JAX & TLH THAT SOME LEFTOVER PRECIP
MAY LINGER TIL 11P IN BIG BEND FROM ACTIVITY WHICH WORKED ITS WAY NORTH
UP THE COAST)...THEN CLEARING SKIES OVERNIGHT.
.WEDNESDAY...MODELS STILL HINTING THAT COMBINATION OF SLIGHTLY DRIER AIR
FROM THE EAST ALONG WITH RIDGE SINKING ON TOP OF US WILL BE LEADING TO
SLIGHTLY LOWER PRECIP COVERAGE. STILL SOUTHEAST FLOW WEDNESDAY...SO
ANOTHER ROUND OF LATE AFT/EVG TSTMS FOCUSED ON WEST COAST.
.THURSDAY...RIDGE A LITTLE STRONGER AND FARTHER SOUTH ACROSS N-CNTRL
FL. AS MLB ALREADY POINTED OUT...STEERING FLOW MAY BECOME MORE SOUTHERLY
THUS DUAL SEA BREEZE PATTERN SHOULD SET UP. MAY BE LITTLE LESS STORMS
AROUND AS STABILITY INCREASES SLIGHTLY. STILL...WILL BE ABLE TO CALL
IT A "TYPICAL" SUMMER DAY.

TEMPERATURE/POP THOUGHTS...
 BKV 71/92/72/94 4533   TPA 73/92/73/93 4534   FMY 74/94/74/95 3533

NASH

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 3:55 PM EDTSevere Thunderstorm WarningTBWCharlotte35 min
Jun 24, 4:24 PM EDTSevere Thunderstorm WarningTBWPasco61 min
Jun 24, 4:35 PM EDTTornado WarningTBWHillsborough35 min
Jun 24, 5:33 PM EDTFlash Flood WarningTBWPasco, Pinellas2 hr

Nearby

Severe Thunderstorm Warnings in Florida, 1997Every 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.