Alert archive / Florida / Tornado Warnings in 2012

Tornado Warning 37, NWS Tampa Bay, FL

August 27, 20124 counties in Florida

NWS Tampa Bay, FL issued this tornado warning at Aug 27, 2012, 1:34 PM EDT for 4 counties in 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 outline as issued.

The facts

Issued
Aug 27, 2012, 1:34 PM EDT (17:34 UTC)
Expired
Aug 27, 2012, 2:00 PM EDT
In force
26 min
Issued by
NWS Tampa Bay, FL
Area
Storm-based polygon

Counties Hardee County, FL, Hillsborough County, FL, Manatee County, FL, Polk County, FL

The radar

The Tampa radar (KTBW), 27 km from the middle of the area, began a volume at 17:35 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.

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 5.6 hours before the alert went out and 27 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.

523 
WFUS52 KTBW 271734
TORTBW
FLC049-057-081-105-271800-
/O.NEW.KTBW.TO.W.0037.120827T1734Z-120827T1800Z/

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

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN HARDEE COUNTY IN FLORIDA.
  SOUTHWESTERN POLK COUNTY IN FLORIDA.
  SOUTHEASTERN HILLSBOROUGH COUNTY IN FLORIDA.
  NORTHEASTERN MANATEE COUNTY IN FLORIDA.

* UNTIL 200 PM EDT

* AT 130 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO NEAR MYAKKA HEAD...OR 17 MILES SOUTHWEST OF WAUCHULA...
  MOVING NORTH AT 35 MPH.

* THE TORNADO WILL BE NEAR...
  MYAKKA HEAD.
  DUETTE.
  FORT LONESOME...ALAFIA RIVER STATE PARK.

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 2775 8229 2779 8204 2742 8203 2741 8209
TIME...MOT...LOC 1735Z 165DEG 32KT 2748 8208

$$
2 follow-up statements
811 
WWUS52 KTBW 271745
SVSTBW

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

FLC049-057-081-105-271800-
/O.CON.KTBW.TO.W.0037.000000T0000Z-120827T1800Z/
HARDEE FL-POLK FL-HILLSBOROUGH FL-MANATEE FL-
145 PM EDT MON AUG 27 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 200 PM EDT FOR
NORTHEASTERN MANATEE...SOUTHEASTERN HILLSBOROUGH...SOUTHWESTERN POLK
AND NORTHWESTERN HARDEE COUNTIES...

AT 144 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A TORNADO...LOCATED NEAR DUETTE...OR 18 MILES WEST OF 
WAUCHULA...MOVING NORTH AT 35 MPH.

THE TORNADO WILL BE NEAR...
  MYAKKA HEAD.
  DUETTE.
  FORT LONESOME.

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 2775 8229 2779 8204 2742 8203 2741 8209
TIME...MOT...LOC 1745Z 165DEG 32KT 2757 8211

$$
183 
WWUS52 KTBW 271803 RRA
SVSTBW

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

FLC049-057-081-105-271812-
/O.EXP.KTBW.TO.W.0037.000000T0000Z-120827T1800Z/
HARDEE FL-POLK FL-HILLSBOROUGH FL-MANATEE FL-
203 PM EDT MON AUG 27 2012

...THE TORNADO WARNING FOR NORTHEASTERN MANATEE...SOUTHEASTERN
HILLSBOROUGH...SOUTHWESTERN POLK AND NORTHWESTERN HARDEE COUNTIES HAS
EXPIRED...
 
THE THREAT FOR A TORNADO HAS DIMINISHED...BUT FUNNEL CLOUDS ARE 
STILL POSSIBLE WITH THESE SHOWERS.

LAT...LON 2775 8229 2779 8204 2742 8203 2741 8209
TIME...MOT...LOC 1745Z 166DEG 31KT 2756 8210

$$

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, 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
Aug 27, 7:38 PM EDTTornado WarningTBWHillsborough, Pasco37 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.