Alert archive / Florida / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 40, NWS Tampa Bay, FL

June 5, 2001Charlotte County, Sarasota County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Jun 5, 2001, 3:44 PM EDT for Charlotte County, Sarasota County, Florida. It was in force for 46 min. 3 reports 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: Jun 5, 2001, 3:44 PM EDT (19:44 UTC)
Expired: Jun 5, 2001, 4:30 PM EDT
In force: 46 min
Issued by: NWS Tampa Bay, FL
Area: Whole counties

Counties Charlotte County, FL, Sarasota County, FL

What was reported inside it

Time	Report	Where	Remark
Jun 5, 3:45 PM EDT	Hail 1.75	Murdock, FL	Golfball to dime sized hail was reported by several Skywarn Spotters across central Port Charlotte.
Jun 5, 4:00 PM EDT	Thunderstorm Wind	North Port, FL	Florida Power & Light utility and the public reported that a few large trees, limbs and power lines were downed in North Port over extreme southern Sarasota county.
Jun 5, 4:00 PM EDT	Thunderstorm Wind	Englewood, FL	Florida Power & Light utility and the public reported that a few large trees, branches and powers lines were downed by thunderstorm winds from Englewood to Punta Gorda.

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, 7.7 hours before the alert went out and 78 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: 557 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 1063 m above ground
0-6 km bulk shear: 2 kt
0-1 km storm-relative helicity: -21 m²/s²
0-3 km storm-relative helicity: -13 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 051945
SVRTBW
FLC015-115-052030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
344 PM EDT TUE JUN 5 2001

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN CHARLOTTE COUNTY IN FLORIDA.
  SOUTHEASTERN SARASOTA COUNTY IN FLORIDA.

* UNTIL 430 PM EDT.

* AT 344 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS...OVER PORT
  CHARLOTTE...MOVING NORTH AT 20 MPH.

* AT 344 PM EDT...WEATHER SPOTTERS ALSO REPORTED DIME SIZED HAIL IN  
  PORT CHARLOTTE.

* THE SEVERE THUNDERSTORM WILL AFFECT....
  PORT CHARLOTTE.
  NORTH PORT.

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

$$


25
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 5, 2:30 PM EDT, 1 hour 14 minutes earlier.

Area forecast discussion, Jun 5, 2:30 PM EDT, 1 hour 14 minutes before

WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
230 PM EDT TUE JUN 5 2001

CONVECTION STARTED EARLY TODAY ON THE EAST COAST SEABREEZE...S FL
PENINSULA SE FLOW...WEST COAST SEABREEZE...AND IN SE GULF. WITH THE
COMBINATION OF MULTIPLE BOUNDARY CONVERGENCE AND THE CURRENT UNSTABLE
ENVIRONMENT BELIEVE LIKELY POPS WILL HAVE NO TROUBLE VERIFYING THIS
AFTERNOON AND EVENING OVER THE AREA.

MODELS IN GOOD AGREEMENT WITH CURRENT PATTERN OF UPPER RIDGE AXIS
OVER THE STATE INTO THE E GULF AND SFC RIDGE OVER N FL KEEPING THE
AREA IN DEEPENING UNSTABLE SE FLOW WITH AFTERNOON AND EVENING
CONVECTION AS BOUNDARIES AND SEABREEZES COLLIDE FOR LIKELY POPS
WED/WED EVE.
THU...MODELS DIFFER SLIGHTLY AND HAVE BACKED OFF ON THE PREVIOUS
SOLUTION. THE UPPER TROF DEEPENS AND MOVES OUT OF THE PLAINS AND TO
THE SE ATLC COAST BUT UPPER LOW OVER THE W GULF KEEPS ENERGY N AND W
OF AREA. THE ASSOCIATED SFC FRONT LAGS OVER THE DEEP SOUTH AS
TROPICAL FEATURE STAYS OVER S MS RV VALLEY. OVER FL...SFC RIDGE AXIS
TO SLOWLY SLIDE S OVER CENTRAL PENINSULA WITH WESTERLY FLOW OVER N
CWA...WHILE SOUTHERN ZONES REMAIN SE. WILL TRIM POPS ACCORDINGLY AS
GUIDANCE TEMPS LOOK GOOD WILL BLEND.

EXTENDED...UPPER TROF STAYS OVER EASTERN US AS SFC FRONT STALES N
OF THE AREA AND SFC RIDGE AXIS MOVES TO THE S FL PEN. WEAK VORT
MAXES ROTATE AROUND BASE OF TROF OVER THE AREA WITH SOUTHWESTERLY
FLOW IN PLACE ENOUGH TO PRODUCE SCT POPS INTO THE WEEKEND THEN
ISOLATED FOR THE START OF THE NEXT WEEK. LONG RANGE NUMBERS APPEAR IN
LINE.

MARINE...RIDGE AXIS N TO KEEP WEAK SE FLOW INTO WED PM. FLOW TO
SHIFT SW THEN W IN RESPONSE TO RIDGE SLIDING S INTO THE WEEKEND.
WINDS AND SEAS TO SLIGHTLY INCREASE AS GRADIENT TIGHTENS WITH TROF N
OF AREA. MAY NEED TO WATCH OFFSHORE BUOY REPORTS FOR ANY POSSIBLE
SWELL FROM ACTIVITY IN THE NW GULF IN 24-36 HOURS...BUT AT THIS POINT
DONT THINK IT WILL INFLUENCE LOCAL CONDITIONS.

PRELIMINARY NUMBERS:
TPA 074/091/074/090 5654
FMY 073/091/074/091 4645

.TBW...NONE.

RD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 4, 8:32 PM EDT	Severe Thunderstorm Warning	TBW	Hillsborough	43 min
Jun 4, 9:02 PM EDT	Severe Thunderstorm Warning	TBW	Pinellas	28 min
Jun 5, 2:34 PM EDT	Severe Thunderstorm Warning	TBW	Sarasota	41 min
Jun 5, 5:57 PM EDT	Severe Thunderstorm Warning	TBW	Pasco	48 min
Jun 5, 6:42 PM EDT	Severe Thunderstorm Warning	TBW	Hernando	33 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.