Alert archive / Florida / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 39, NWS Tampa Bay, FL

July 25, 2002Pinellas County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Jul 25, 2002, 5:52 PM EDT for Pinellas County, Florida. It was in force for 38 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 25, 2002, 5:52 PM EDT (21:52 UTC)
Expired: Jul 25, 2002, 6:30 PM EDT
In force: 38 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 21:49 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, 9.9 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-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: 2670 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 769 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: 5 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.

010 
WUUS52 KTBW 252152
SVRTBW
FLC103-252230-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
551 PM EDT THU JUL 25 2002

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

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

* UNTIL 630 PM EDT.

* AT 551 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH LARGE HAIL...OVER PINELLAS                
  PARK...MOVING WEST AT 10 MPH. WIND GUSTS TO 47 MPH HAVE ALREADY    
  BEEN REPORTED WITH THIS STORM.

* THE SEVERE THUNDERSTORM WILL AFFECT...
  LEALMAN.
  PINELLAS PARK.
  HIGHPOINT.
  LARGO.

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

$$

LAT...LON 2778 8261 2795 8258 2802 8288 2780 8291

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 2:24 PM EDT	Severe Thunderstorm Warning	TBW	Citrus	36 min
Jul 25, 2:55 PM EDT	Severe Thunderstorm Warning	TBW	Levy	35 min
Jul 25, 3:24 PM EDT	Severe Thunderstorm Warning	TBW	Sarasota	36 min
Jul 25, 4:20 PM EDT	Severe Thunderstorm Warning	TBW	Hillsborough	25 min
Jul 25, 4:26 PM EDT	Special Marine Warning	TBW		64 min
Jul 25, 4:41 PM EDT	Severe Thunderstorm Warning	TBW	Manatee	34 min
Jul 25, 4:45 PM EDT	Severe Thunderstorm Warning	TBW	Hillsborough	30 min
Jul 25, 4:51 PM EDT	Special Marine Warning	TBW		24 min
Jul 25, 4:54 PM EDT	Special Marine Warning	TBW		51 min
Jul 25, 5:19 PM EDT	Severe Thunderstorm Warning	TBW	Hillsborough	26 min
Jul 25, 5:52 PM EDT	Special Marine Warning	TBW		53 min
Jul 25, 6:43 PM EDT	Severe Thunderstorm Warning	TBW	Polk	32 min
Jul 25, 6:56 PM EDT	Severe Thunderstorm Warning	TBW	Hardee	34 min

Nearby

Severe Thunderstorm Warnings in Florida, 2002 Every 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.