Alert archive / Florida / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 122, NWS Tampa Bay, FL

August 9, 2001Hardee County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Aug 9, 2001, 3:28 PM EDT for Hardee County, Florida. It was in force for 32 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: Aug 9, 2001, 3:28 PM EDT (19:28 UTC)
Expired: Aug 9, 2001, 4:00 PM EDT
In force: 32 min
Issued by: NWS Tampa Bay, FL
Area: Whole counties

County Hardee County, FL

The radar

The Tampa radar (KTBW), 63 km from the middle of the area, began a volume at 19:32 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.

What was reported inside it

Time	Report	Where	Remark
Aug 9, 3:45 PM EDT	Thunderstorm Wind	Bowling Green, FL	The Hardee county emergency management reported that thunderstorm winds toppled onto its side, and damaged, a large travel trailer at a trailer park along U.S. Highway 17 in Bowling Green. Also, a few large trees and several large branches were downed by thun

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, 7.5 hours before the alert went out and 63 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: 2212 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 719 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: -22 m²/s²
0-3 km storm-relative helicity: 11 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 9, 2:09 PM EDT, 1 hour 19 minutes earlier.

Area forecast discussion, Aug 9, 2:09 PM EDT, 1 hour 19 minutes before

WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
209 PM EDT THU AUG 9 2001

CURRENTLY...VISIBLE SATELLITE LOOP DEPICTS WELL DEFINED SEA BREEZE
BOUNDARIES ALONG BOTH COASTS EARLY THIS AFTERNOON. 88D RETURNS
ALREADY INDICATING A GOOD DEAL OF CONVECTION DEVELOPING ON THEM AND
IT LOOKS LIKE ITS GOING TO BE RATHER ACTIVE THE REST OF THE AFTERNOON
AND EVENING HOURS AS BOUNDARY COLLISIONS TAKE PLACE. WITH THIS IN
MIND PLAN TO CARRY SCATTERED EVENING POPS (30-40% RANGE) ACROSS THE
BOARD IN THE 5 PM PACKAGE.

SHORT TERM...MODELS CONTINUE TO BE IN GOOD AGREEMENT WITH SYNOPTIC
SCALE FEATURES THIS CYCLE AND PROG LEFTOVER SHORT WAVE ENERGY
(REMNANTS OF BARRY) NOW OVER THE LOWER TN VALLEY SEWD INTO SOUTH
CENTRAL GA DURING THE NEXT 48 HOURS AS WEAK UPPER LEVEL TROUGHINESS
DEVELOPS OVER THE STATE. AS THIS OCCURS THE SURFACE HIGH PRESSURE
RIDGE NOW OVER THE N-CENTRAL PENINSULA WILL SAG SOUTH TO AROUND THE
LAKE OVER THE WEEKEND...PROVIDING MY NORTHERN FA WITH A SW-WLY FLOW
AND A LIGHT AND VARIABLE FLOW CENTRAL AND SOUTH. WITH LITTLE CHANGE
IN MOISTURE EXPECTED...SCATTERED SEA BREEZE DRIVEN CONVECTION WILL
CONTINUE TO BE THE RULE EACH DAY AND WILL ADVERTISE BETWEEN 30-50%
POPS IN MOST ZONES. GUIDANCE TEMPERATURES CONTINUE VERY CLOSE...SO A
BLEND WILL BE USED.

EXTENDED...LITTLE CHANGE FROM PREVIOUS 24 HOURS. SURFACE RIDGE PROGD
TO MEANDER ABOUT THE NORTH CENTRAL PENINSULA INTO EARLY NEXT WEEK AS
SERIES OF TROPICAL WAVES PASS BY TO THE SOUTH. WITH MODEL X-SECTIONS
CONTINUING TO ADVERTISE ABUNDANT MOISTURE...DAILY AFTERNOON AND
EVENING SEA BREEZE DRIVEN CONVECTION WILL RULE AND WILL LEAVE
SCATTERED POP MENTION AS IS. LITTLE TEMPERATURE CHANGES EXPECTED.

MARINE...TRANQUIL WIND/SEA STATES TO CONTINUE IN THE NEAR AND LONG
TERM AS WEAK HIGH PRESSURE PERSISTS OVER THE COASTAL WATERS WITH
DAILY AFTERNOON SEA BREEZES. NO HIGHLIGHTS EXPECTED.

PRELIMINARY NUMBERS
TPA BB 077/092 076/091 3435
FMY BB 076/092 075/092 3434

.TBW...NONE.

MCMICHAEL

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 1:54 PM EDT	Severe Thunderstorm Warning	TBW	Polk	36 min
Aug 9, 2:32 PM EDT	Severe Thunderstorm Warning	TBW	Polk	43 min
Aug 9, 3:24 PM EDT	Severe Thunderstorm Warning	TBW	Polk	36 min
Aug 9, 3:36 PM EDT	Severe Thunderstorm Warning	TBW	Hillsborough	39 min
Aug 9, 5:24 PM EDT	Severe Thunderstorm Warning	TBW	Manatee, Sarasota	51 min

Nearby

Severe Thunderstorm Warnings in Florida, 2001 Every severe thunderstorm warning in 2001

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; radar from the NEXRAD Level II archive.