Alert archive / Florida / Tornado Warnings in 2011

Tornado Warning 6, NWS Tampa Bay, FL

January 25, 2011Hillsborough County, Florida

NWS Tampa Bay, FL issued this tornado warning at Jan 25, 2011, 5:49 PM EST for Hillsborough County, 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
Jan 25, 2011, 5:49 PM EST (22:49 UTC)
Expired
Jan 25, 2011, 6:15 PM EST
In force
26 min
Issued by
NWS Tampa Bay, FL
Area
Storm-based polygon

County Hillsborough County, FL

The radar

The Tampa radar (KTBW), 27 km from the middle of the area, began a volume at 22:50 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jan 25, 2:07 PM ESTTornado WatchSPC7 hr

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 10.8 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 2011-01-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 5 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 2011-01-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 368 square meters per square second.1939587897Sfc1 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
5 J/kg
Mixed-layer CIN
-221 J/kg
Mixed-layer LCL
717 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
368 m²/s²
0-3 km storm-relative helicity
493 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

480 
WFUS52 KTBW 252249
TORTBW
FLC057-252315-
/O.NEW.KTBW.TO.W.0006.110125T2249Z-110125T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
549 PM EST TUE JAN 25 2011

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

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

* UNTIL 615 PM EST

* AT 545 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO NEAR GIBSONTON...OR 9 MILES SOUTH OF BRANDON...MOVING EAST
  AT 35 MPH.

* THE TORNADO WILL BE NEAR...
  BLOOMINGDALE.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EST TUESDAY EVENING
FOR WESTERN FLORIDA.

&&

LAT...LON 2795 8206 2774 8206 2771 8235 2788 8239
TIME...MOT...LOC 2249Z 259DEG 30KT 2781 8227

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 25, 4:16 AM ESTSmall Craft AdvisoryTBW39 hr
Jan 25, 4:34 AM ESTHigh Surf AdvisoryTBWPinellas19 hr
Jan 25, 9:33 AM ESTLake Wind AdvisoryTBWDeSoto, Hardee, Highlands, Pinellas, Polk, Sumter8 hr
Jan 25, 1:48 PM ESTSpecial Marine WarningTBW57 min
Jan 25, 2:41 PM ESTSpecial Marine WarningTBW64 min
Jan 25, 2:57 PM ESTSpecial Weather StatementTBWCitrus, Levy63 min
Jan 25, 3:37 PM ESTSevere Thunderstorm WarningTBWCitrus, Hernando, Pasco53 min
Jan 25, 3:43 PM ESTSpecial Marine WarningTBW62 min
Jan 25, 3:55 PM ESTTornado WarningTBWCitrus39 min
Jan 25, 4:00 PM ESTTornado WarningTBWHernando, Pasco45 min
Jan 25, 4:24 PM ESTSpecial Marine WarningTBW96 min
Jan 25, 4:30 PM ESTSevere Thunderstorm WarningTBWCitrus, Hernando, Pasco, Sumter60 min
Jan 25, 4:31 PM ESTSpecial Weather StatementTBWHillsborough, Pinellas59 min
Jan 25, 4:45 PM ESTTornado WarningTBWHernando, Pasco, Sumter30 min
Jan 25, 5:00 PM ESTSevere Thunderstorm WarningTBWHillsborough, Manatee, Pinellas, Sarasota60 min
Jan 25, 5:05 PM ESTSpecial Marine WarningTBW115 min
Jan 25, 5:09 PM ESTTornado WarningTBWHillsborough, Pinellas36 min
Jan 25, 5:29 PM ESTSpecial Weather StatementTBWHillsborough, Manatee, Sarasota61 min
Jan 25, 5:44 PM ESTAreal Flood AdvisoryTBWHillsborough, Pinellas91 min
Jan 25, 5:45 PM ESTTornado WarningTBWHighlands, Polk30 min
Jan 25, 5:55 PM ESTAreal Flood AdvisoryTBWManatee2 hr
Jan 25, 5:58 PM ESTTornado WarningTBWPolk32 min
Jan 25, 6:00 PM ESTTornado WarningTBWManatee, Sarasota30 min
Jan 25, 6:01 PM ESTTornado WarningTBWHardee, Hillsborough, Manatee, Polk29 min
Jan 25, 6:30 PM ESTTornado WarningTBWDeSoto, Hardee, Manatee, Sarasota30 min
Jan 25, 6:35 PM ESTTornado WarningTBWCharlotte, DeSoto, Sarasota40 min
Jan 25, 6:54 PM ESTSevere Thunderstorm WarningTBWHardee, Highlands, Polk36 min

Nearby

Tornado Warnings in Florida, 2011Every tornado warning in 2011Tornadoes in 2011

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.