Alert archive / Florida / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 34, NWS Tampa Bay, FL

July 8, 2000Polk County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Jul 8, 2000, 3:52 PM EDT for Polk County, Florida. It was in force for 38 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jul 8, 2000, 3:52 PM EDT (19:52 UTC)
Expired
Jul 8, 2000, 4:30 PM EDT
In force
38 min
Issued by
NWS Tampa Bay, FL
Area
Whole counties

County Polk County, FL

What was reported inside it

TimeReportWhereRemark
Jul 8, 4:15 PM EDTThunderstorm WindFt Meade, FLLaw enforcement of Polk county reported that thunderstorm winds downed two large trees and several large branches along NE 9th Street between County Roads 630 and 640 near Ft. Meade.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 7.9 hours before the alert went out and 74 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 2000-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1472 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 2000-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 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
1472 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
948 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
54 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.

356 
WUUS52 KTBW 081955
SVRTBW
FLC105-082030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
352 PM EDT SAT JUL 8 2000

THE NATIONAL WEATHER SERVICE IN RUSKIN FLORIDA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL POLK COUNTY.

* UNTIL 430 PM EDT.

* AT 352 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
  SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS...NEAR      
  LAKE BUFFUM IN SOUTHERN POLK COUNTY...MOVING NORTHWEST AT 5 MPH.

* THE SEVERE THUNDERSTORM WILL AFFECT...
  AREAS SOUTHEAST OF BARTOW.

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 2771 8164 2776 8155 2792 8162 2783 8180

33
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 Jul 8, 3:45 PM EDT, 7 minutes earlier.

Area forecast discussion, Jul 8, 3:45 PM EDT, 7 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
345 PM EDT SAT JUL 8 2000

CURRENTLY...SCATTERED TO NUMEROUS THUNDERSTORMS ACROSS THE FORECAST
AREA AT THIS TIME THANKS TO DEEP MOISTURE COMBINED WITH VORT AXIS AND
WEAK TROUGH ACROSS NORTHERN PORTIONS OF FORECAST AREA FROM AROUND
CEDAR KEY TO MLB.

FORECAST...MODELS IN FAIRLY GOOD AGREEMENT NEXT 48 HOURS. VORT AXIS
AND TROUGH WILL SLIP SLOWLY SOUTHWEST ACROSS FORECAST AREA TONIGHT
AS HIGH PRESSURE MOVES OFF SOUTHEAST UNITED STATES COAST.
THUNDERSTORMS WILL WEAKEN AND MOVE OUT OVER GULF EARLY TONIGHT...BUT
EXPECT MORE LATE NIGHT AND EARLY MORNING CONVECTION OVER COASTAL
COUNTIES FROM TPA SOUTH. MODELS KEEPING DEEP MOISTURE OVER
CENTRAL AND SOUTHERN ZONES THROUGH THIS FORECAST AND WITH EASTERLY
FLOW SETTING UP EXPECT ANOTHER ROUND OF SCATTERED TO NUMEROUS
THUNDERSTORMS FROM AROUND BKV TO GIF SOUTH SUNDAY AFTERNOON AND
EVENING.

EAST TO SOUTHEAST FLOW SHOULD CONTINUE THROUGH TUESDAY AS SURFACE
RIDGE BUILDS OVER AREA WITH SCATTERED AFTERNOON AND EVENING
THUNDERSTORMS.

IN THE EXTENDED FORECAST...SURFACE RIDGE BEGINS TO SLIP SOUTH WITH
MORE WEST TO SOUTHWEST SETTING UP FOR MID WEEK.

MARINE...WINDS WILL GRADUALLY SHIFT AROUND TO THE EAST SOUTHEAST
TONIGHT AND CONTINUE THROUGH TUESDAY WITH A SEA BREEZE DEVELOPING
EACH AFTERNOON. WINDS TO REMAIN UNDER 15 KNOTS AND SEAS 3 FEET OR
LESS THROUGH THIS FORECAST SO NO HIGHLIGHTS NEEDED.

FIRE WEATHER...RELATIVE HUMIDITY LEVELS TO REMAIN ABOVE THRESHOLDS
THROUGH SUNDAY...THEREFORE NO HIGHLIGHTS FOR THIS FORECAST.

PRELIMINARY NUMBERS:
TPA BB 076/090 076/090 6533
FMY BB 076/091 076/091 5534

.TBW...NONE

PRC

Nearby

Severe Thunderstorm Warnings in Florida, 2000Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.