Alert archive / Florida / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 21, NWS Tampa Bay, FL

June 4, 2004Manatee County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Jun 4, 2004, 7:45 PM EDT for Manatee County, Florida. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 4, 2004, 7:45 PM EDT (23:45 UTC)
Expired
Jun 4, 2004, 8:15 PM EDT
In force
30 min
Issued by
NWS Tampa Bay, FL
Area
Counties, with a storm outline in the text

County Manatee County, FL

The radar

The Tampa radar (KTBW), 25 km from the middle of the area, began a volume at 23:46 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, 11.8 hours before the alert went out and 25 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 2004-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 754 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 2004-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -25 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
754 J/kg
Mixed-layer CIN
-95 J/kg
Mixed-layer LCL
890 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-25 m²/s²
0-3 km storm-relative helicity
-20 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 
WUUS52 KTBW 042345
SVRTBW
FLC081-050015-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
744 PM EDT FRI JUN 4 2004

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN MANATEE COUNTY

* UNTIL 815 PM EDT

* AT 744 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH LARGE HAIL...11 MILES EAST OF PALMETTO...
  MOVING WEST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL AFFECT...
  PARRISH.
  ELLENTON.
  PALMETTO.

AT 744 PM EDT...WEATHER SPOTTERS ALSO REPORTED DIME SIZE HAIL AT 
MILL CREEK.

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


&&

LAT...LON 2741 8231 2759 8230 2762 8267 2740 8268

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 4, 1:24 PM EDTSevere Thunderstorm WarningTBWManatee36 min
Jun 4, 3:04 PM EDTSevere Thunderstorm WarningTBWHillsborough, Polk41 min
Jun 4, 3:54 PM EDTSpecial Marine WarningTBW36 min
Jun 4, 4:20 PM EDTSevere Thunderstorm WarningTBWHillsborough40 min
Jun 4, 6:49 PM EDTSevere Thunderstorm WarningTBWCharlotte, Sarasota41 min

Nearby

Severe Thunderstorm Warnings in Florida, 2004Every severe thunderstorm warning in 2004

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.