Alert archive / Florida / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 49, NWS Tampa Bay, FL

July 27, 2006Manatee County, Sarasota County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Jul 27, 2006, 4:55 PM EDT for Manatee County, Sarasota County, Florida. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 27, 2006, 4:55 PM EDT (20:55 UTC)
Expired
Jul 27, 2006, 5:45 PM EDT
In force
50 min
Issued by
NWS Tampa Bay, FL
Area
Counties, with a storm outline in the text

Counties Manatee County, FL, Sarasota County, FL

The radar

The Tampa radar (KTBW), 33 km from the middle of the area, began a volume at 20:55 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 8.9 hours before the alert went out and 33 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 2006-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1727 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 2006-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 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
1727 J/kg
Mixed-layer CIN
-62 J/kg
Mixed-layer LCL
983 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
6 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 272055
SVRTBW
FLC081-115-272145-
/O.NEW.KTBW.SV.W.0049.060727T2055Z-060727T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
455 PM EDT THU JUL 27 2006

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL MANATEE COUNTY IN FLORIDA.
  NORTHERN SARASOTA COUNTY IN FLORIDA.

* UNTIL 545 PM EDT

* AT 455 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM...CAPABLE OF PRODUCING NICKEL SIZE HAIL...18
  MILES NORTHEAST OF SARASOTA...MOVING SOUTHWEST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MYAKKA RIVER STATE PARK.
  DESOTO LAKES.
  SARASOTA BRADENTON AIRPORT.
  SARASOTA.

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

&&

LAT...LON 2754 8220 2755 8229 2744 8264 2717 8249
      2721 8229

$$

13
2 follow-up statements
000 
WWUS52 KTBW 272128
SVSTBW

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
528 PM EDT THU JUL 27 2006

FLC081-115-272145-
/O.CON.KTBW.SV.W.0049.000000T0000Z-060727T2145Z/
MANATEE-SARASOTA-
528 PM EDT THU JUL 27 2006

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR NORTHERN SARASOTA AND WESTERN MANATEE COUNTIES...

AT 528 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM 10 MILES EAST OF BRADENTON...MOVING SOUTHWEST AT
15 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  LAKE MANATEE STATE PARK.
  SAMOSET.
  DESOTO LAKES.

THE SEVERE THUNDERSTORM IS ALSO CAPABLE OF PRODUCING...
  NICKEL SIZE HAIL.
  EXCESSIVE AND DEADLY CLOUD-TO-GROUND LIGHTNING.

&&

LAT...LON 2762 8224 2762 8250 2753 8267 2717 8249
      2721 8229

$$

13
000 
WWUS52 KTBW 272147
SVSTBW

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
546 PM EDT THU JUL 27 2006

FLC081-115-272156-
/O.EXP.KTBW.SV.W.0049.000000T0000Z-060727T2145Z/
MANATEE-SARASOTA-
546 PM EDT THU JUL 27 2006

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN SARASOTA AND
NORTHWESTERN MANATEE COUNTIES HAS EXPIRED...

AT 546 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED THE 
THUNDERSTORM HAD WEAKENED AND WAS NO LONGER SEVERE...THUS THE WARNING
HAS BEEN ALLOWED TO EXPIRE.

DOPPLER RADAR INDICATED THAT HEAVY RAIN...SMALL HAIL...AND GUSTY 
WINDS WERE STILL POSSIBLE FROM A LARGE AREA OF THUNDERSTORMS COVERING
MUCH OF MANATEE AND SARASOTA COUNTIES.

STAY TUNED TO LOCAL MEDIA OUTLETS FOR THE LATEST SEVERE WEATHER
INFORMATION.

&&

LAT...LON 2762 8224 2762 8250 2753 8267 2717 8249
      2721 8229

$$

57

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 27, 12:58 PM EDT, 3 hours 57 minutes earlier.

Area forecast discussion, Jul 27, 12:58 PM EDT, 3 hours 57 minutes before
WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
1258 PM EDT THU JUL 27 2006

.SHORT TERM...(TONIGHT-SAT)...THE UPPER TROUGH THAT MOVED OVER
FLORIDA OVERNIGHT CONTINUES TO DIG SOUTHWEST PUSHING DRIER MORE
STABLE AIR OVER NORTH FLORIDA. GFS AND NAM SOLUTIONS ARE A BIT
DIFFERENT WITH NAM CONSOLIDATING PRECIP INTO A NARROW BAND OVER
SOUTH FLORIDA TONIGHT WITH NORTHWARD MOVEMENT FRIDAY. WILL LEAN TO
A MORE GENERALIZED SOLUTION AT THIS TIME WITH AFTERNOON
PRECIPITATION BECOMING ISOLATED OVERNIGHT AND EAST TO SOUTHEASTERLY FLOW
WITH RIDGE AXIS JUST NORTH OF TAMPA BAY TOMORROW WITH SCATTERED
CONVECTION TOWARD THE WEST COAST. FOR SATURDAY SIMILAR FLOW AND
CONVECTION WITH RIDGE AXIS JUST NORTH OF TAMPA BAY. IN SLIGHTLY
DRIER AIR TONIGHT LOW TEMPS SLIGHTLY BELOW NORMAL OVER THE NORTH
ZONES OTHERWISE NEAR NORMAL TEMPERATURES.

LONG TERM (SAT NGT-THU)...MODELS BEGIN THE PERIOD IN GENERAL
AGREEMENT WITH HIGH PRESSURE OVER THE ATLANTIC RIDGING WEST ACROSS
NORTH CENTRAL OR NORTH FL. THE ECMWF/UKMET MAINTAINS THIS RIDGE
THROUGH OUT THE PERIOD. HOWEVER...THE GFS DEVELOPS A WAVE/LOW EAST
OF THE BAHAMAS MON THAT COULD BE EAST OF FL BY THE END OF THE
PERIOD WHILE THE DGEX MOVES A WAVE ACROSS SOUTH FL LATE SUN OR
EARLY MON AND INTO THE GULF TUE WITH A SECOND WAVE MOVING OVER THE
BAHAMAS WED AND OFFSHORE FL THU. FOR NOW WILL BASE THIS FORECAST
ON THE RIDGE AXIS STAYING OVER OR NORTH OF THE NORTH CWFA WITH
SOUTHEASTERLY FLOW. CONVECTION WILL BE IN THE SCATTERED RANGE
AFTERNOONS AND ISOLATED IN THE EVENINGS. TEMPERATURES WILL RUN
NEAR OR JUST ABOVE CLIMO.

&&

.MARINE...WINDS GENERALLY EAST 15 KT OR LESS WITH AFTERNOON SEA
BREEZES NEAR THE COAST AND SEAS AROUND 2FT THRU THE WEEKEND.

&&

.AVIATION...VFR ATTM WITH SCT MID CLDS AND SCT V BKN CI ABOVE.
ALTHOUGH KRSW DID SEE SOME BRIEF MVFR CIG. CURRENT TAFS VFR WITH CB
AND/OR VCTS THROUGH THE AFTERNOON AS WINDS SHIFT TO ONSHORE IN THE
SEA BREEZE. BASED ON RECENT STLT/RADAR TRENDS WILL KEEP 18Z TAFS
SIMILAR. CONVECTION WILL END AROUND 00Z AS WINDS SHIFT BACK TO A
LIGHT LAND BREEZE.

&&

.FIRE WEATHER...NO FIRE WX CONCERNS THRU THE PERIOD.

&&

.PRELIMINARY POINT TEMPS/POPS...
TPA  77  90  76  92 /  20  40  20  40
FMY  75  90  75  91 /  20  40  30  40
GIF  76  91  76  92 /  20  40  20  40
SRQ  75  90  75  92 /  20  40  20  40
BKV  72  90  73  92 /  20  40  20  40
SPG  78  90  79  91 /  20  40  20  40

&&

.TBW WATCHES/WARNINGS/ADVISORIES...
FL...NONE.
GULF WATERS...NONE.
&&

SHORT TERM...CP
LONG TERM/AVIATION...RR
Hazardous weather outlook, Jul 27, 3:19 AM EDT, 13 hours 36 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
319 AM EDT THU JUL 27 2006

FLZ039-042-043-048>052-055>057-060>062-065-271800-
LEVY-CITRUS-SUMTER-HERNANDO-PASCO-PINELLAS-HILLSBOROUGH-POLK-
MANATEE-HARDEE-HIGHLANDS-SARASOTA-DE SOTO-CHARLOTTE-LEE-
319 AM EDT THU JUL 27 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST
FLORIDA AND WEST CENTRAL FLORIDA.

.DAY ONE...TODAY AND TONIGHT

SCATTERED THUNDERSTORMS ARE EXPECTED LATER THIS MORNING AND THIS
AFTERNOON THROUGH EVENING. HEAVY DOWNPOURS...FREQUENT TO
EXCESSIVE LIGHTNING...BRIEF GUSTY WINDS AND SMALL HAIL ARE
POSSIBLE WITH THESE THUNDERSTORMS. SEEK SHELTER INDOORS IN A
STURDY STRUCTURE IF THREATENING WEATHER APPROACHES. HEAVY DOWNPOURS
WILL CAUSE LOCALIZED PONDING OF WATER ON ROADWAYS. NEVER CROSS
AREAS WHERE WATER COVERS THE ROADWAY.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

SCATTERED THUNDERSTORM ACTIVITY WILL BE POSSIBLE THROUGH THE
PERIOD. THESE THUNDERSTORMS WILL BE CAPABLE OF PRODUCING FREQUENT
TO EXCESSIVE LIGHTNING...HEAVY DOWNPOURS..AND BRIEF GUSTY WINDS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

In the hours before

Special weather statement, Jul 27, 2:16 PM EDT, 2 hours 39 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
216 PM EDT THU JUL 27 2006

FLZ050-271845-
PINELLAS-
216 PM EDT THU JUL 27 2006

...STRONG THUNDERSTORM WILL AFFECT COASTAL PINELLAS COUNTY...

A THUNDERSTORM...MOVING WEST AT 5 MPH...WILL AFFECT
DUNEDIN...HONEYMOON AND CALEDESI ISLAND...UNTIL 245 PM EDT. GUSTY
WINDS 40 TO 50 MPH MAY CAUSE LOOSE OBJECTS TO BLOW AROUND. MINOR
DAMAGE TO TREE LIMBS AND WIRES IS POSSIBLE. EXCESSIVE CLOUD TO
GROUND LIGHTNING IS EXPECTED IF OUTSIDE...CROUCH DOWN IN A LOW
SPOT...AWAY FROM TALL OBJECTS. IF INDOORS...REFRAIN FROM USING
ELECTRICAL APPLIANCES. HAIL UP TO ONE HALF INCH IN DIAMETER IS
EXPECTED. RAINFALL RATES OF 1 TO 2 INCHES PER HOUR WILL OCCUR.
MOTORISTS CAN EXPECT PONDING OF WATER ON ROADS...AND MINOR FLOODING
OF POOR DRAINAGE AREAS.

RJS
Special weather statement, Jul 27, 2:29 PM EDT, 2 hours 26 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
229 PM EDT THU JUL 27 2006

FLZ062-271915-
CHARLOTTE-
229 PM EDT THU JUL 27 2006

...STRONG THUNDERSTORMS WILL AFFECT CENTRAL AND WESTERN CHARLOTTE
COUNTY...

STRONG THUNDERSTORMS...MOVING SOUTHWEST AT 10 MPH...WILL AFFECT
TUCKERS CORNER AND BABCOCK RANCH...UNTIL 315 PM EDT. GUSTY WINDS UP
TO 40 MPH WILL OCCUR. FREQUENT CLOUD TO GROUND LIGHTNING IS
EXPECTED. IF CAUGHT OUTSIDE...CROUCH DOWN IN A LOW SPOT...AWAY FROM
TALL OBJECTS. THIS STORM WILL PRODUCE PEA SIZE HAIL. TORRENTIAL
RAINS WILL CAUSE PONDING OF WATER ON ROADS...AND MINOR FLOODING OF
POOR DRAINAGE AREAS.

JCM
Special weather statement, Jul 27, 2:40 PM EDT, 2 hours 15 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
240 PM EDT THU JUL 27 2006

FLZ049-271930-
PASCO-
240 PM EDT THU JUL 27 2006

...STRONG TO SEVERE THUNDERSTORMS ALONG SOUTH CENTRAL PASCO
COUNTY...

A SEVERE THUNDERSTORM IS LOCATED JUST SOUTH OF THE BORDER ABOUT 5
MILES SOUTH OF WESLEY CHAPEL...MOVING WEST AT 10 MPH. RESIDENTS IN
PASCO COUNTY MAY SEE GUSTY WINDS 40 TO 50 MPH THAT WILL CAUSE LOOSE
OBJECTS TO BLOW AROUND. MINOR DAMAGE TO TREE LIMBS AND WIRES IS
ALSO POSSIBLE. EXCESSIVE CLOUD TO GROUND LIGHTNING IS EXPECTED IF
OUTSIDE...CROUCH DOWN IN A LOW SPOT...AWAY FROM TALL OBJECTS. IF
INDOORS...REFRAIN FROM USING ELECTRICAL APPLIANCES. HAIL UP TO ONE
HALF INCH IN DIAMETER IS EXPECTED. IF THE STORM BUILDS INTO PASCO
COUNTY...A SEVERE THUNDERSTORM WARNING MAY BE REQUIRED.

RJS
Special weather statement, Jul 27, 3:07 PM EDT, 1 hour 48 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
307 PM EDT THU JUL 27 2006

FLZ050-051-271945-
PINELLAS-HILLSBOROUGH-
307 PM EDT THU JUL 27 2006

...STRONG THUNDERSTORMS WILL AFFECT NORTHWEST HILLSBOROUGH AND
NORTHERN PINELLAS COUNTIES...

STRONG THUNDERSTORMS...MOVING SOUTHWEST AT 5 MPH...WILL AFFECT
OLDSMAR...SAFETY HARBOR...PALM HARBOR AND DUNEDIN...UNTIL 345 PM
EDT. GUSTY WINDS UP TO 40 MPH WILL OCCUR. FREQUENT CLOUD TO GROUND
LIGHTNING IS EXPECTED. IF CAUGHT OUTSIDE...CROUCH DOWN IN A LOW
SPOT...AWAY FROM TALL OBJECTS. THIS STORM WILL PRODUCE PEA SIZE
HAIL. TORRENTIAL RAINS WILL CAUSE PONDING OF WATER ON ROADS...AND
MINOR FLOODING OF POOR DRAINAGE AREAS. MOTORISTS SHOULD EXERCISE
CAUTION.

JCM
Special weather statement, Jul 27, 4:25 PM EDT, 30 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
425 PM EDT THU JUL 27 2006

FLZ052-272115-
POLK-
425 PM EDT THU JUL 27 2006

...STRONG THUNDERSTORMS WILL AFFECT WESTERN POLK COUNTY...

THUNDERSTORMS...MOVING WEST AT 10 TO 15 MPH...WILL AFFECT EAST
LAKELAND...MULBERRY...CRYSTAL LAKE...UNTIL 515 PM EDT. GUSTY WINDS
UP TO 40 MPH WILL OCCUR. EXCESSIVE CLOUD TO GROUND LIGHTNING IS
EXPECTED IF OUTSIDE...CROUCH DOWN IN A LOW SPOT...AWAY FROM TALL
OBJECTS. IF INDOORS...REFRAIN FROM USING ELECTRICAL APPLIANCES. HAIL
UP TO ONE HALF INCH IN DIAMETER IS EXPECTED. TORRENTIAL RAINS WILL
REDUCE VISIBILITY TO NEAR ZERO AT TIMES. MOTORISTS MAY WANT TO DELAY
TRAVEL.

STORMS OVER THE TAMPA BAY AREA HAVE COME IN WITH LARGE HAIL EARLIER
IN THE DAY. IF THE STORMS OVER POLK COUNTY STRENGTHEN FURTHER...A
SEVERE THUNDERSTORM WARNING MAY BE ISSUED. STAY TUNED.

RJS

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 2:19 PM EDTSevere Thunderstorm WarningTBWHillsborough41 min
Jul 27, 2:25 PM EDTSevere Thunderstorm WarningTBWPinellas50 min
Jul 27, 2:27 PM EDTSpecial Marine WarningTBW63 min
Jul 27, 3:14 PM EDTSevere Thunderstorm WarningTBWHillsborough, Pasco, Pinellas31 min
Jul 27, 3:18 PM EDTSpecial Marine WarningTBW57 min
Jul 27, 3:22 PM EDTSevere Thunderstorm WarningTBWLee23 min
Jul 27, 3:45 PM EDTSevere Thunderstorm WarningTBWPasco, Pinellas45 min
Jul 27, 4:08 PM EDTSpecial Marine WarningTBW67 min
Jul 27, 4:08 PM EDTSpecial Marine WarningTBW67 min
Jul 27, 4:12 PM EDTSevere Thunderstorm WarningTBWPasco33 min
Jul 27, 4:15 PM EDTSpecial Marine WarningTBW60 min
Jul 27, 4:35 PM EDTSevere Thunderstorm WarningTBWPolk25 min
Jul 27, 4:40 PM EDTSevere Thunderstorm WarningTBWSarasota35 min
Jul 27, 5:03 PM EDTSpecial Marine WarningTBW33 min
Jul 27, 5:33 PM EDTSpecial Marine WarningTBW57 min
Jul 27, 5:52 PM EDTSpecial Marine WarningTBW53 min

Nearby

Severe Thunderstorm Warnings in Florida, 2006Every severe thunderstorm warning in 2006

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; radar from the NEXRAD Level II archive.