Alert archive / Florida / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 21, NWS Tampa Bay, FL

June 29, 2002Pinellas County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Jun 29, 2002, 7:04 PM EDT for Pinellas County, Florida. It was in force for 41 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 29, 2002, 7:04 PM EDT (23:04 UTC)
Expired
Jun 29, 2002, 7:45 PM EDT
In force
41 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 23:08 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, 11.1 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 2002-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 576 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 2002-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 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
576 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
880 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
9 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.

495 
WUUS52 KTBW 292304
SVRTBW
FLC103-292345-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
704 PM EDT SAT JUN 29 2002

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN PINELLAS COUNTY IN FLORIDA.

* UNTIL 745 PM EDT.

* AT 704 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH DAMAGING WINDS...5 MILES EAST OF SAINT   
PETERSBURG...MOVING WEST AT 10 TO 15 MPH.

* THE SEVERE THUNDERSTORM WILL AFFECT...
  SAINT PETERSBURG.

SEVERE THUNDERSTORMS CONTAIN WIND GUSTS OF 60 MPH OR HIGHER...AND
HAIL THE SIZE OF DIMES OR LARGER. MOVE TO A PLACE OF SAFETY.

EXCESSIVE LIGHTNING IS ALSO POSSIBLE WITH THIS STORM.

$$

LAT...LON 2765 8256 2779 8247 2789 8273 2767 8279

NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 3:37 PM EDTSpecial Marine WarningTBW83 min
Jun 29, 3:37 PM EDTSpecial Marine WarningTBW83 min
Jun 29, 5:43 PM EDTSevere Thunderstorm WarningTBWManatee47 min
Jun 29, 6:29 PM EDTSevere Thunderstorm WarningTBWHillsborough46 min
Jun 29, 6:38 PM EDTSpecial Marine WarningTBW52 min

Nearby

Severe Thunderstorm Warnings in Florida, 2002Every severe thunderstorm warning in 2002

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.