Alert archive / Florida / Tornado Warnings in 2012

Tornado Warning 38, NWS Tampa Bay, FL

August 27, 2012Hillsborough County, Pasco County, Florida

NWS Tampa Bay, FL issued this tornado warning at Aug 27, 2012, 7:38 PM EDT for Hillsborough County, Pasco County, Florida. It was in force for 37 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 27, 2012, 7:38 PM EDT (23:38 UTC)
Expired
Aug 27, 2012, 8:15 PM EDT
In force
37 min
Issued by
NWS Tampa Bay, FL
Area
Storm-based polygon

Counties Hillsborough County, FL, Pasco County, FL

The radar

The Tampa radar (KTBW), 71 km from the middle of the area, began a volume at 23:40 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

TimeReportWhereRemark
Aug 27, 7:55 PM EDTFUNNEL CLOUD4 Ssw Wesley Chapel, FLTRAINED SPOTTER REPORTED FUNNEL CLOUD NEAR THE SHOPS AT WIREGRASS AT 755 PM.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 11.6 hours before the alert went out and 71 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 2012-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 566 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tampa Bay, FL at 12:00Z on 2012-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 391 square meters per square second.193958Sfc1 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
566 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
548 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
391 m²/s²
0-3 km storm-relative helicity
419 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

216 
WFUS52 KTBW 272338
TORTBW
FLC057-101-280015-
/O.NEW.KTBW.TO.W.0038.120827T2338Z-120828T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
738 PM EDT MON AUG 27 2012

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN HILLSBOROUGH COUNTY IN FLORIDA.
  CENTRAL PASCO COUNTY IN FLORIDA.

* UNTIL 815 PM EDT

* AT 739 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO NEAR THONOTOSASSA...OR 7 MILES EAST OF TEMPLE TERRACE...
  MOVING NORTH AT 25 MPH.

* THE TORNADO WILL BE NEAR...
  THONOTOSASSA.
  HILLSBOROUGH RIVER STATE PARK.
  WESLEY CHAPEL.
  SAN ANTONIO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THE TORNADO GO TO A SMALL INTERIOR ROOM IN
A STRONG AND WELL CONSTRUCTED BUILDING. CARS AND MOBILE HOMES ARE NOT
SAFE. IF NO SHELTER IS AVAILABLE...LIE FLAT IN A DITCH OR CULVERT AND
COVER YOUR HEAD WITH YOUR HANDS.

TO REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE PLEASE CALL
813-645-2323.

&&

LAT...LON 2843 8252 2843 8226 2848 8225 2848 8220
      2807 8223 2806 8231
TIME...MOT...LOC 2339Z 171DEG 23KT 2809 8228

$$
3 follow-up statements
269 
WWUS52 KTBW 272347
SVSTBW

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
747 PM EDT MON AUG 27 2012

FLC057-101-280015-
/O.CON.KTBW.TO.W.0038.000000T0000Z-120828T0015Z/
HILLSBOROUGH FL-PASCO FL-
747 PM EDT MON AUG 27 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM EDT FOR EASTERN
PASCO AND NORTHERN HILLSBOROUGH COUNTIES...

AT 747 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.   LOCATED 8 MILES SOUTH OF WESLEY CHAPEL...OR 9
MILES NORTHEAST OF TEMPLE TERRACE...MOVING NORTH AT 25 MPH.

THE TORNADO WILL BE NEAR...
  WESLEY CHAPEL.
  SAN ANTONIO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THE TORNADO GO TO A SMALL INTERIOR ROOM IN
A STRONG AND WELL CONSTRUCTED BUILDING. CARS AND MOBILE HOMES ARE NOT
SAFE. IF NO SHELTER IS AVAILABLE...LIE FLAT IN A DITCH OR CULVERT AND
COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 2842 8249 2843 8226 2848 8225 2848 8220
      2812 8227 2812 8231 2841 8251
TIME...MOT...LOC 2347Z 171DEG 23KT 2815 8229

$$
757 
WWUS52 KTBW 272355
SVSTBW

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
755 PM EDT MON AUG 27 2012

FLC057-280005-
/O.CAN.KTBW.TO.W.0038.000000T0000Z-120828T0015Z/
HILLSBOROUGH FL-
755 PM EDT MON AUG 27 2012

...THE TORNADO WARNING FOR NORTHERN HILLSBOROUGH COUNTY IS
CANCELLED...

LAT...LON 2843 8224 2817 8227 2817 8232 2842 8244
      2843 8226
TIME...MOT...LOC 2355Z 171DEG 23KT 2820 8230

$$

FLC101-280015-
/O.CON.KTBW.TO.W.0038.000000T0000Z-120828T0015Z/
PASCO FL-
755 PM EDT MON AUG 27 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM EDT FOR CENTRAL
PASCO COUNTY...

AT 755 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.   LOCATED NEAR WESLEY CHAPEL...OR 8 MILES
SOUTHWEST OF ZEPHYRHILLS...MOVING NORTH AT 25 MPH.

THE TORNADO WILL BE NEAR...
  WESLEY CHAPEL.
  SAN ANTONIO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THE TORNADO GO TO A SMALL INTERIOR ROOM IN
A STRONG AND WELL CONSTRUCTED BUILDING. CARS AND MOBILE HOMES ARE NOT
SAFE. IF NO SHELTER IS AVAILABLE...LIE FLAT IN A DITCH OR CULVERT AND
COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 2843 8224 2817 8227 2817 8232 2842 8244
      2843 8226
TIME...MOT...LOC 2355Z 171DEG 23KT 2820 8230

$$
159 
WWUS52 KTBW 280007
SVSTBW

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
807 PM EDT MON AUG 27 2012

FLC101-280017-
/O.EXP.KTBW.TO.W.0038.000000T0000Z-120828T0015Z/
PASCO FL-
807 PM EDT MON AUG 27 2012

...THE TORNADO WARNING FOR CENTRAL PASCO COUNTY WILL EXPIRE AT 815 PM
EDT...

THE STORM THAT PRODUCED THE TORNADO HAS NOW WEAKENED AND IS NO LONGER
CAPABLE OF PRODUCING SEVERE WEATHER.

LAT...LON 2843 8224 2817 8227 2817 8232 2842 8244
      2843 8226
TIME...MOT...LOC 0007Z 171DEG 23KT 2828 8231

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 9:57 PM EDTSpecial Weather StatementTBWCharlotte, DeSoto, Hardee, Highlands, Hillsborough, Lee and 4 more78 min
Aug 27, 4:02 AM EDTLake Wind AdvisoryTBWDeSoto, Hardee, Highlands, Pinellas, Polk, Sumter16 hr
Aug 27, 9:31 AM EDTAreal Flood AdvisoryTBWHighlands59 min
Aug 27, 11:50 AM EDTBeach Hazards StatementTBWPinellas4 days
Aug 27, 11:50 AM EDTCoastal Flood AdvisoryTBWPinellas28 hr
Aug 27, 11:50 AM EDTHigh Surf AdvisoryTBWPinellas3 days
Aug 27, 11:51 AM EDTSmall Craft AdvisoryTBW70 hr
Aug 27, 1:14 PM EDTAreal Flood WarningTBWHighlands3 hr
Aug 27, 1:22 PM EDTTornado WarningTBWManatee, Sarasota38 min
Aug 27, 1:34 PM EDTTornado WarningTBWHardee, Hillsborough, Manatee, Polk26 min
Aug 27, 3:55 PM EDTSpecial Weather StatementTBWHillsborough50 min
Aug 27, 3:57 PM EDTSpecial Marine WarningTBW53 min
Aug 27, 7:21 PM EDTSpecial Weather StatementTBWHernando, Pasco54 min

Nearby

Tornado Warnings in Florida, 2012Every tornado warning in 2012Tornadoes in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.