Alert archive / Florida / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 7, NWS Tampa Bay, FL

June 7, 2000Hillsborough County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Jun 7, 2000, 5:55 PM EDT for Hillsborough County, Florida. It was in force for 35 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 7, 2000, 5:55 PM EDT (21:55 UTC)
Expired: Jun 7, 2000, 6:30 PM EDT
In force: 35 min
Issued by: NWS Tampa Bay, FL
Area: Whole counties

County Hillsborough County, FL

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 9.9 hours before the alert went out and 23 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: 1199 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 853 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 43 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

000 
WUUS52 KTBW 072155
SVRTBW
TTAA00 KTBW 072154

FLC057-072230-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
555 PM EDT WED JUN 7 2000

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL HILLSBOROUGH COUNTY

* UNTIL 630 PM EDT

* AT 544 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS 5 MILES
  NORTH OF BRANDON...MOVING SOUTH AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MANGO
  BRANDON
  BLOOMINGDALE
  RIVERVIEW
  GIBSONTON

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

$$

LAT...LON 2798 8220 2802 8240 2781 8244 2777 8228

88
NNNN

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 7, 3:45 PM EDT, 2 hours 10 minutes earlier.

Area forecast discussion, Jun 7, 3:45 PM EDT, 2 hours 10 minutes before

WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
345 PM EDT WED JUN 7 2000

MODELS ANALYSIS INDICATED THAT A WEAK SHORT WAVE TROUGH IN THE BASE
OF THE LONG WAVE TROUGH OVER FLORIDA COUPLED WITH WEAK UPPER LEVEL
SPEED MAXIMUM OVER THE TOP OF STALLED DEW POINT BOUNDARY STALLED OVER
CENTRAL FLORIDA...HAS HELPED INITIATE AND SUSTAIN AFTERNOON
CONVECTION.

LOW LEVEL CONVERGENCE...OUTFLOW BOUNDARIES...PRECIPITABLE WATERS
ABOVE 1.5 INCHES...POSITIVE VORTICITY ADVECTION AND WEAK UPPER
LEVEL DIFLUENCE WILL HELP SUSTAIN THUNDERSTORM ACTIVITY OVER THE
INTERIOR COUNTIES THROUGH EARLY EVENING.

BY THURSDAY EVENING...MODELS WASH OUT SURFACE BOUNDARY WHILE HIGH
PRESSURE BUILDS OVER THE SOUTHEASTERN U.S. WITH RIDGE AXIS NORTH OF
FLORIDA.  EXPECT EASTERLY WINDS TO DEVELOP FROM SURFACE TO 850 MB
OVER THE FORECAST AREA BY LATE THURSDAY.  ALTHOUGH MID AND UPPER
LEVEL MOISTURE FIELDS WILL BE LIMITED WITH NORTHERLY FLOW...SEA
BREEZE AND SYNOPTIC FLOW INTERACTION MAY INDUCE AFTERNOON SCATTERED
SHOWER AND THUNDERSTORM ACTIVITY ALONG THE WEST FLORIDA COAST FROM
TAMPA SOUTH TO FT MYERS.

TPA 73/92/70/92 1423
FMY 72/91/70/92 -524

.TBW...RED FLAG WARNING FOR LEVY...CITRUS...HERNANDO...POLK AND
       SUMTER INCLUDING INLAND AREAS OF HILLSBOROUGH AND PASCO
       COUNTIES UNTIL SUNSET.

    ...FIRE WEATHER WATCH FOR MANATEE AND HARDEE UNTIL SUNSET.

    ...FIRE WEATHER WATCH FOR LEVY...CITRUS...SUMTER AND HERNANDO
       1PM UNTIL SUNSET ON THURSDAY.

ZALESKI

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 7, 5:12 PM EDT	Tornado Warning	TBW	Hillsborough, Polk	33 min

Nearby

Severe Thunderstorm Warnings in Florida, 2000 Every severe thunderstorm warning in 2000

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.