Alert archive / Florida / Tornado Warnings in 2011

Tornado Warning 19, NWS Tampa Bay, FL

March 31, 2011Hillsborough County, Pasco County, Pinellas County, Florida

NWS Tampa Bay, FL issued this tornado warning at Mar 31, 2011, 8:24 AM EDT for Hillsborough County, Pasco County, Pinellas County, Florida. It was in force for 51 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
Mar 31, 2011, 8:24 AM EDT (12:24 UTC)
Expired
Mar 31, 2011, 9:15 AM EDT
In force
51 min
Issued by
NWS Tampa Bay, FL
Area
Storm-based polygon

Counties Hillsborough County, FL, Pasco County, FL, Pinellas County, FL

The radar

The Tampa radar (KTBW), 61 km from the middle of the area, began a volume at 12:25 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
Mar 31, 8:55 AM EDTTORNADO3 Ene Lutz, FLNUMEROUS REPORTS OF TORNADO AND FUNNEL THAT MOVED FROM ODESSA TO NEAR LUTZ TO NEAR INTERSTATE 75 JUST SOUTH OF THE PASCO COUNTY LINE. TIME ESTIMATED BASED ON RADAR.

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

The watch it was issued in

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

IssuedProductOfficeLasted
Mar 31, 6:00 AM EDTTornado WatchSPC7 hr

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 0.4 hours before the alert went out and 61 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 2011-03-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 728 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 2011-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 543 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
728 J/kg
Mixed-layer CIN
-58 J/kg
Mixed-layer LCL
787 m above ground
0-6 km bulk shear
69 kt
0-1 km storm-relative helicity
543 m²/s²
0-3 km storm-relative helicity
606 m²/s²
Significant tornado parameter
0.0
Supercell composite
8.9

Open this sounding in Storm Lab

The text

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

609 
WFUS52 KTBW 311224
TORTBW
FLC057-101-103-311315-
/O.NEW.KTBW.TO.W.0019.110331T1224Z-110331T1315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
824 AM EDT THU MAR 31 2011

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN HILLSBOROUGH COUNTY IN FLORIDA.
  PASCO COUNTY IN FLORIDA.
  NORTHERN PINELLAS COUNTY IN FLORIDA.

* UNTIL 915 AM EDT

* AT 821 AM EDT...A FUNNEL CAPABLE OF BECOMING A TORNADO WAS         
  SIGHTED 3 MILES SOUTHWEST OF ODESSA...MOVING NORTHEAST AT 35 MPH.

* THE TORNADO WILL BE NEAR...
  TARPON SPRINGS.
  NEW PORT RICHEY.
  ODESSA.
  MOON LAKE ESTATES.
  LUTZ.
  LAND O' LAKES.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 PM EDT THURSDAY AFTERNOON
FOR WESTERN FLORIDA.

&&

LAT...LON 2824 8276 2844 8228 2823 8214 2802 8278
      2820 8280
TIME...MOT...LOC 1224Z 242DEG 30KT 2813 8271

$$
4 follow-up statements
301 
WWUS52 KTBW 311236
SVSTBW

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
836 AM EDT THU MAR 31 2011

FLC057-101-103-311315-
/O.CON.KTBW.TO.W.0019.000000T0000Z-110331T1315Z/
PINELLAS FL-HILLSBOROUGH FL-PASCO FL-
836 AM EDT THU MAR 31 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 AM EDT FOR PASCO...
NORTHWESTERN HILLSBOROUGH AND NORTHERN PINELLAS COUNTIES...

AT 835 AM EDT...THE PUBLIC REPORTED A TORNADO.   LOCATED NEAR
ODESSA...OR 8 MILES EAST OF HOLIDAY...MOVING NORTHEAST AT 35 MPH.

THE TORNADO WILL BE NEAR...
  HOLIDAY.
  ODESSA.
  MOON LAKE ESTATES.
  LUTZ.
  LAND O' LAKES.
  WESLEY CHAPEL.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 PM EDT THURSDAY AFTERNOON
FOR WESTERN FLORIDA.

&&

LAT...LON 2824 8276 2844 8228 2823 8214 2802 8278
      2820 8280
TIME...MOT...LOC 1236Z 242DEG 30KT 2818 8261

$$

JOHNSON
056 
WWUS52 KTBW 311245
SVSTBW

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
845 AM EDT THU MAR 31 2011

FLC103-311255-
/O.CAN.KTBW.TO.W.0019.000000T0000Z-110331T1315Z/
PINELLAS FL-
845 AM EDT THU MAR 31 2011

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

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 PM EDT THURSDAY AFTERNOON
FOR WESTERN FLORIDA.

THE STORM HAS LEFT THE COUNTY.

LAT...LON 2820 8264 2831 8259 2843 8228 2823 8214
      2807 8264
TIME...MOT...LOC 1245Z 242DEG 30KT 2821 8253

$$

FLC057-101-311315-
/O.CON.KTBW.TO.W.0019.000000T0000Z-110331T1315Z/
HILLSBOROUGH FL-PASCO FL-
845 AM EDT THU MAR 31 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 AM EDT FOR CENTRAL
PASCO AND NORTHWESTERN HILLSBOROUGH COUNTIES...

AT 840 AM EDT...THE PUBLIC REPORTED A TORNADO.   LOCATED NEAR
ODESSA...OR 8 MILES NORTHWEST OF LUTZ...MOVING NORTHEAST AT 35 MPH.

THE TORNADO WILL BE NEAR...
  ODESSA.
  LAND O' LAKES.
  WESLEY CHAPEL.
  DARBY.
  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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 PM EDT THURSDAY AFTERNOON
FOR WESTERN FLORIDA.

&&

LAT...LON 2820 8264 2831 8259 2843 8228 2823 8214
      2807 8264
TIME...MOT...LOC 1245Z 242DEG 30KT 2821 8253

$$

JOHNSON
459 
WWUS52 KTBW 311249
SVSTBW

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
849 AM EDT THU MAR 31 2011

FLC057-101-311315-
/O.CON.KTBW.TO.W.0019.000000T0000Z-110331T1315Z/
HILLSBOROUGH FL-PASCO FL-
849 AM EDT THU MAR 31 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 AM EDT FOR CENTRAL
PASCO AND NORTHWESTERN HILLSBOROUGH COUNTIES...

AT 844 AM EDT...THE PUBLIC REPORTED A TORNADO.  LOCATED NEAR 
ODESSA...OR 6 MILES NORTHWEST OF LUTZ...MOVING NORTHEAST AT 35 MPH.

THE TORNADO WILL BE NEAR...
  ODESSA.
  LAND O' LAKES.
  WESLEY CHAPEL.
  DARBY.
  SAN ANTONIO.

THERE HAVE BEEN SEVERAL REPORTS OF A TORNADO ON THE GROUND IN THE 
ODESSA AND LUTZ.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 PM EDT THURSDAY AFTERNOON
FOR WESTERN FLORIDA.

&&

LAT...LON 2820 8264 2831 8259 2843 8228 2823 8214
      2807 8264
TIME...MOT...LOC 1249Z 242DEG 30KT 2822 8250

$$
675 
WWUS52 KTBW 311259
SVSTBW

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
859 AM EDT THU MAR 31 2011

FLC057-101-311315-
/O.CON.KTBW.TO.W.0019.000000T0000Z-110331T1315Z/
HILLSBOROUGH FL-PASCO FL-
859 AM EDT THU MAR 31 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 AM EDT FOR SOUTHERN
PASCO AND NORTHERN HILLSBOROUGH COUNTIES...

AT 854 AM EDT...THE PUBLIC REPORTED A TORNADO.   LOCATED NEAR LAND O
LAKES...OR 7 MILES NORTH OF LUTZ...MOVING NORTHEAST AT 35 MPH.

THE TORNADO WILL BE NEAR...
  LAND O' LAKES.
  WESLEY CHAPEL.
  ZEPHYRHILLS.

THERE HAVE BEEN NUMEROUS REPORTS THIS MORNING OF A TORNADO ON THE 
GROUND IN NORTHERN HILLSBOROUGH COUNTY.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 PM EDT THURSDAY AFTERNOON
FOR WESTERN FLORIDA.

&&

LAT...LON 2822 8248 2827 8236 2831 8220 2823 8214
      2813 8247
TIME...MOT...LOC 1259Z 242DEG 30KT 2826 8242

$$

JOHNSON

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 30, 8:57 PM EDTSpecial Marine WarningTBW63 min
Mar 31, 1:06 AM EDTSpecial Marine WarningTBW54 min
Mar 31, 4:50 AM EDTSmall Craft AdvisoryTBW17 hr
Mar 31, 5:47 AM EDTSpecial Marine WarningTBW58 min
Mar 31, 6:10 AM EDTTornado WarningTBWHernando, Pasco50 min
Mar 31, 6:23 AM EDTSevere Thunderstorm WarningTBWHillsborough, Pasco, Pinellas52 min
Mar 31, 6:43 AM EDTSpecial Marine WarningTBW62 min
Mar 31, 7:15 AM EDTSpecial Weather StatementTBWPolk45 min
Mar 31, 7:30 AM EDTSevere Thunderstorm WarningTBWPolk45 min
Mar 31, 7:49 AM EDTSpecial Marine WarningTBW26 min
Mar 31, 7:53 AM EDTSevere Thunderstorm WarningTBWHillsborough, Pasco, Pinellas52 min
Mar 31, 8:38 AM EDTSpecial Weather StatementTBWLevy52 min
Mar 31, 8:47 AM EDTSpecial Marine WarningTBW58 min
Mar 31, 8:57 AM EDTTornado WarningTBWHillsborough, Pasco, Polk33 min
Mar 31, 9:13 AM EDTSpecial Marine WarningTBW92 min
Mar 31, 9:14 AM EDTSpecial Weather StatementTBWCitrus, Hernando46 min
Mar 31, 9:26 AM EDTSpecial Marine WarningTBW94 min
Mar 31, 9:29 AM EDTTornado WarningTBWPolk19 min
Mar 31, 9:36 AM EDTSpecial Weather StatementTBWHernando, Sumter39 min
Mar 31, 9:37 AM EDTAreal Flood AdvisoryTBWCitrus, Hernando, Pasco, Polk, Sumter113 min
Mar 31, 9:39 AM EDTSpecial Weather StatementTBWLevy51 min
Mar 31, 9:44 AM EDTTornado WarningTBWCitrus, Hernando, Sumter31 min
Mar 31, 10:09 AM EDTSpecial Marine WarningTBW51 min
Mar 31, 10:14 AM EDTSevere Thunderstorm WarningTBWHernando, Sumter31 min
Mar 31, 10:29 AM EDTTornado WarningTBWPinellas61 min
Mar 31, 10:37 AM EDTSpecial Weather StatementTBWCitrus38 min
Mar 31, 10:52 AM EDTSpecial Marine WarningTBW23 min
Mar 31, 11:09 AM EDTSpecial Marine WarningTBW66 min
Mar 31, 11:14 AM EDTTornado WarningTBWHillsborough, Pinellas46 min
Mar 31, 11:22 AM EDTSevere Thunderstorm WarningTBWHillsborough, Manatee, Pinellas38 min
Mar 31, 11:35 AM EDTSevere Thunderstorm WarningTBWHillsborough, Polk40 min
Mar 31, 11:47 AM EDTAreal Flood AdvisoryTBWHillsborough, Pinellas88 min
Mar 31, 11:51 AM EDTTornado WarningTBWHillsborough, Polk39 min
Mar 31, 11:57 AM EDTSevere Thunderstorm WarningTBWHillsborough, Polk33 min
Mar 31, 12:01 PM EDTSpecial Marine WarningTBW59 min
Mar 31, 12:01 PM EDTSevere Thunderstorm WarningTBWManatee44 min
Mar 31, 12:10 PM EDTSpecial Weather StatementTBWPinellas50 min
Mar 31, 12:13 PM EDTTornado WarningTBWPolk32 min
Mar 31, 12:16 PM EDTFlash Flood WarningTBWPolk59 min
Mar 31, 12:23 PM EDTSevere Thunderstorm WarningTBWPolk22 min
Mar 31, 12:25 PM EDTSevere Thunderstorm WarningTBWHillsborough, Manatee, Pinellas35 min
Mar 31, 12:27 PM EDTSpecial Marine WarningTBW63 min
Mar 31, 12:53 PM EDTSpecial Weather StatementTBWPolk52 min
Mar 31, 1:02 PM EDTSpecial Marine WarningTBW118 min
Mar 31, 1:25 PM EDTAreal Flood AdvisoryTBWHillsborough, Manatee, Pinellas, Polk2 hr
Mar 31, 1:29 PM EDTSevere Thunderstorm WarningTBWHillsborough, Manatee31 min
Mar 31, 1:34 PM EDTSpecial Weather StatementTBWHillsborough, Pinellas41 min
Mar 31, 2:01 PM EDTSpecial Weather StatementTBWManatee44 min
Mar 31, 2:29 PM EDTSpecial Weather StatementTBWManatee, Sarasota46 min
Mar 31, 2:33 PM EDTSpecial Marine WarningTBW57 min
Mar 31, 3:13 PM EDTSpecial Weather StatementTBWHernando, Sumter47 min
Mar 31, 3:16 PM EDTSpecial Weather StatementTBWPinellas44 min
Mar 31, 3:18 PM EDTSpecial Marine WarningTBW12 min
Mar 31, 3:21 PM EDTRiver Flood WarningTBWPasco7 days
Mar 31, 3:21 PM EDTRiver Flood WarningTBWHillsborough3 days
Mar 31, 3:35 PM EDTSpecial Marine WarningTBW115 min
Mar 31, 4:27 PM EDTSpecial Weather StatementTBWManatee, Polk63 min
Mar 31, 4:39 PM EDTSevere Thunderstorm WarningTBWHardee, Hillsborough, Manatee, Sarasota36 min
Mar 31, 4:51 PM EDTSevere Thunderstorm WarningTBWManatee, Sarasota24 min
Mar 31, 5:18 PM EDTSpecial Marine WarningTBW57 min
Mar 31, 5:22 PM EDTSpecial Weather StatementTBWDeSoto, Hardee, Highlands, Sarasota53 min
Mar 31, 6:03 PM EDTSevere Thunderstorm WarningTBWHillsborough, Pasco, Pinellas29 min
Mar 31, 6:14 PM EDTSpecial Marine WarningTBW61 min
Mar 31, 7:47 PM EDTSpecial Marine WarningTBW58 min
Mar 31, 7:55 PM EDTSpecial Weather StatementTBWCharlotte50 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.