Alert archive / Florida / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 71, NWS Tampa Bay, FL

August 23, 2000Manatee County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Aug 23, 2000, 6:04 PM EDT for Manatee County, Florida. It was in force for 26 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
Aug 23, 2000, 6:04 PM EDT (22:04 UTC)
Expired
Aug 23, 2000, 6:30 PM EDT
In force
26 min
Issued by
NWS Tampa Bay, FL
Area
Whole counties

County Manatee County, FL

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 10.1 hours before the alert went out and 26 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 2000-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1317 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 2000-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -13 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
1317 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
794 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-13 m²/s²
0-3 km storm-relative helicity
10 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 232204
SVRTBW
FLC081-232230-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
604 PM EDT WED AUG 23 2000

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN MANATEE COUNTY.

* UNTIL 630 PM EDT.

* AT 604 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH DAMAGING WINDS...OVER BRADENTON...MOVING
  WEST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL AFFECT...
  BRADENTON.
  CORTEZ.
  BRADENTON BEACH.

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 2744 8246 2749 8251 2752 8274 2738 8268

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 Aug 23, 2:59 PM EDT, 3 hours 5 minutes earlier.

Area forecast discussion, Aug 23, 2:59 PM EDT, 3 hours 5 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
259 PM EDT WED AUG 23 2000

SHOWERS ARE POPPING UP ALL OVER THE INLAND COUNTIES...THESE STORMS
WILL MOVE INTO COASTAL COUNTIES SHORTLY.  EVEN THOUGH THERE IS NO
SEABREEZE IT STANDS TO REASON THAT THERE WILL BE SOME LOW LEVEL
SPEED CONVERGENCE NEAR THE COAST.  I WOULD EXPECT THUNDERSTORMS TO
BLOW UP A BIT NEAR AND JUST OFFSHORE.  ACTIVITY SHOULD NOT LAST
MUCH BEYOND SUNSET.

FOR THURSDAY...I AM GOING TO SHUT DOWN THE POPS AS WE START TO FEEL
THE SUBSIDENCE AROUND DEBBY.   THIS OF COURSE WILL MEAN POPS HIGHER
IN THE NORTH THAN IN THE SOUTH.

ITS BEYOND THURSDAY THAT THE FORECAST BECOMES A LITTLE MORE
DIFFICULT.  THE OFFICIAL DAY 4 POSITION PUTS DEBBY RIGHT ABOUT
OVER BRADENTON.  THE CURRENT FORECAST ALREADY IS STEPPING UP WINDS
AND POPS...I WILL UP IT EVEN A LITTLE FURTHER...YET STILL STAY ON
THE CONSERVATIVE SIDE.  SAME GOES FOR THE MARINE FORECAST.

I DO NOT WANT TO GO INTO DETAIL ON STORM TRACK BUT OBVIOUSLY
EVERYTHING DEPENDS ON THE SHORT WAVE SWINGING AROUND THE
SUBTROPICAL RIDGE THAT HAS BEEN A SEMI PERMANENT FEATURE THIS
SUMMER.  ALL MODELS INDICATE THAT IT WILL CUT OUT A DEEP LAYER
TROUGH OVER THE EAST COAST CREATING A WEAKNESS FOR THE STORM.

THANKS TLH...MIA AND NHC FOR COORDINATION.

PRELIMINARY NUMBER

TPA BT 074/094 074/090 074 1205
FMY BT 074/094 075/089 075 1106

.TBW...NONE.

SOBIEN

In the hours before

Local storm report, Aug 23, 2:30 PM EDT, 3 hours 34 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
230 PM EDT WED AUG 23 2000

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0730 PM    3 ENE BOCA GRANDE         FL   WATERSPOUT
08/21/00   LEE                            A FAMILY OF UP TO THREE
                                          WATERSPOUTS WAS
                                          REPORTED BY THE PUBLIC.
                                          ONE OF THE WATERSPOUTS
                                          EVENTUALLY MOVED
                                          ONSHORE NEAR BOCA
                                          GRANDE.  EVENT DURATION
                                          10 MINUTES.

0740 PM    1 NE BOCA GRANDE          FL   TORNADO
08/21/00   LEE                            THE PUBLIC REPORTED
                                          THAT A WATERSPOUT MOVED
                                          ONSHORE AS A WEAK
                                          TORNADO ALONG TREASURE
                                          LANE, ONE MILE
                                          NORTHEAST OF BOCA
                                          GRANDE.  THE LOCAL FIRE
                                          DEPARTMENT REPORTED
                                          THAT THE SMALL TORNADO
                                          CAUSED MINOR ROOF,
                                          LANAI, CARPORT AND
                                          GLASS DAMAGE TO A FEW
                                          HOMES AS IT MOVED WEST
                                          ACROSS JEAN LAFETTE...
                                          GASPAR DRIVE... EAST
                                          RAILROAD AND GASPARILLA
                                          ROADS.  ALSO...A FEW
                                          LARGE TREES WERE
                                          UPROOTED OR SNAPPED
                                          HALF WAY FROM THE BASE
                                          BEFORE THE TORNADO
                   s                       LIFTED AND DISSIPATED
                                          NEAR 14TH STREET.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 23, 5:30 PM EDTSevere Thunderstorm WarningTBWSarasota30 min

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; the sounding from the Mesonet's radiosonde archive.