Alert archive / Florida / Tornado Warnings in 2011
Tornado Warning 24, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this tornado warning at Mar 31, 2011, 11:14 AM EDT for Hillsborough County, Pinellas County, Florida. It was in force for 46 min. 11 reports 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, 11:14 AM EDT (15:14 UTC)
- Expired
- Mar 31, 2011, 12:00 PM EDT
- In force
- 46 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Storm-based polygon
Counties Hillsborough County, FL, Pinellas County, FL
The radar
The Tampa radar (KTBW), 27 km from the middle of the area, began a volume at 15:15 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 31, 11:15 AM EDT | TSTM WND DMG | 4 Ese Largo, FL | POSSIBLE TORNADO. DEBRIS IN THE AIR WITH HORIZONTAL RAIN. |
| Mar 31, 11:18 AM EDT | TSTM WND DMG | Madeira Beach, FL | ROOF DAMAGE AND SIGNS BLOWING ACROSS ROAD. |
| Mar 31, 11:18 AM EDT | NON-TSTM WND GST 55 | Saint Petersburg-Clearw, FL | 48 KNOTS |
| Mar 31, 11:20 AM EDT | TSTM WND DMG | 2 Sw Largo, FL | SPOTTER REPORTS DAMAGE TO NUMEROUS MOBILE HOMES IN THE VICINITY OF ULMERTON RD. AND RIDGE RD. |
| Mar 31, 11:20 AM EDT | TSTM WND DMG | 5 Ssw Clearwater, FL | ROOF AND STRUCTURE DAMAGE NEAR LARGO MALL. ALSO REPORT OF 300 FOOT TOWER COLLAPSE IN AREA. |
| Mar 31, 11:20 AM EDT | TORNADO | 5 W Brandon, FL | UNCONFIRMED TORNADO. REPORTS OF TWO OVERTURNED VEHICLES. |
| Mar 31, 11:31 AM EDT | TSTM WND GST 61 | Macdill Air Force Base, FL | 53 KNOT WIND GUST AT KMCF ASOS. |
| Mar 31, 11:40 AM EDT | TSTM WND DMG | 2 Ese Tampa, FL | NUMEROUS ROOFS MISSING AROUND TAMPA PORT AUTHORITY. STORAGE CONTAINERS ROUGHLY 40 FEET LONG TURNED OVER. |
| Mar 31, 11:40 AM EDT | TORNADO | 5 W Brandon, FL | UNCONFIRMED TORNADO. REPORTS OF TWO OVERTURNED VEHCILES. TIME ESTIMATED. |
| Mar 31, 11:45 AM EDT | TSTM WND DMG | 3 Sw Brandon, FL | DAMAGE ON BLOOMINGDALE AVENUE FROM GORTNO LAKE EASTWARD TO KINGS AVENUE. ONE TRUCK OVERTURNED. NUMEROUS TREES DOWN. TREE ON HOME. SIGNS DOWN. MULTIPLE REPORTS. |
| Mar 31, 11:55 AM EDT | HAIL 0.75 | 3 W Plant City, FL |
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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 31, 6:00 AM EDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 3.2 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.
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
713
WFUS52 KTBW 311514
TORTBW
FLC057-103-311600-
/O.NEW.KTBW.TO.W.0024.110331T1514Z-110331T1600Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
1114 AM EDT THU MAR 31 2011
THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A
* TORNADO WARNING FOR...
CENTRAL HILLSBOROUGH COUNTY IN FLORIDA.
CENTRAL PINELLAS COUNTY IN FLORIDA.
* UNTIL NOON EDT
* AT 1110 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
TORNADO NEAR LARGO...MOVING EAST AT 45 MPH.
* THE TORNADO WILL BE NEAR...
HIGHPOINT.
TOWN 'N' COUNTRY.
TAMPA.
EAST LAKE-ORIENT PARK.
MANGO.
SEFFNER.
THIS INCLUDES INTERSTATE 275 BETWEEN EXITS 24 AND 51.
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 SOUTHWESTERN FLORIDA.
&&
LAT...LON 2796 8284 2801 8267 2798 8267 2798 8263
2801 8263 2800 8266 2813 8215 2789 8207
2783 8239 2789 8241 2792 8247 2782 8246
2782 8253 2787 8256 2786 8259 2780 8261
2778 8279
TIME...MOT...LOC 1514Z 258DEG 40KT 2790 8275
$$
JOHNSON3 follow-up statements
001
WWUS52 KTBW 311529
SVSTBW
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
1129 AM EDT THU MAR 31 2011
FLC057-103-311600-
/O.CON.KTBW.TO.W.0024.000000T0000Z-110331T1600Z/
PINELLAS FL-HILLSBOROUGH FL-
1129 AM EDT THU MAR 31 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL NOON EDT FOR CENTRAL
HILLSBOROUGH AND CENTRAL PINELLAS COUNTIES...
AT 1124 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. LOCATED NEAR FEATHER SOUND...OR 7 MILES
NORTHEAST OF PINELLAS PARK...MOVING EAST AT 45 MPH.
THE TORNADO WILL BE NEAR...
TOWN 'N' COUNTRY.
TAMPA.
GIBSONTON.
EAST LAKE-ORIENT PARK.
MANGO.
DOVER.
THIS IS A VERY DANGEROUS SITUATION. DOPPLER RADAR IS INDICATING
WINDS OF 80 TO 90 MPH OVER OLD TAMPA BAY MOVING TOWARDS TAMPA. TAKE
SHELTER IMMEDIATELY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THE TORNADO GO TO A SMALL INTERIOR ROOM IN
A STRONG AND WELL CONSTRUCTED BUILDING. CARS AND MOBILE HOMES ARE NOT
SAFE. IF NO SHELTER IS AVAILABLE...LIE FLAT IN A DITCH OR CULVERT AND
COVER YOUR HEAD WITH YOUR HANDS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 PM EDT THURSDAY AFTERNOON
FOR SOUTHWESTERN FLORIDA.
&&
LAT...LON 2796 8284 2801 8267 2798 8267 2798 8263
2801 8263 2800 8266 2813 8215 2789 8207
2783 8239 2789 8241 2792 8247 2782 8246
2782 8253 2787 8256 2786 8259 2780 8261
2778 8279
TIME...MOT...LOC 1529Z 258DEG 40KT 2793 8256
$$
JOHNSON581
WWUS52 KTBW 311538
SVSTBW
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
1138 AM EDT THU MAR 31 2011
FLC057-103-311600-
/O.CON.KTBW.TO.W.0024.000000T0000Z-110331T1600Z/
PINELLAS FL-HILLSBOROUGH FL-
1138 AM EDT THU MAR 31 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL NOON EDT FOR CENTRAL
HILLSBOROUGH AND EASTERN PINELLAS COUNTIES...
AT 1134 AM EDT...THE DOPPLER RADAR INDICATED A TORNADO.
LOCATED NEAR TAMPA...MOVING EAST AT 40 MPH.
THE TORNADO WILL BE NEAR...
TAMPA.
PALM RIVER-CLAIR MEL.
BRANDON.
VALRICO.
DOVER.
THIS INCLUDES INTERSTATE 275 BETWEEN EXITS 39 AND 50.
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 SOUTHWESTERN FLORIDA.
&&
LAT...LON 2813 8215 2789 8207 2783 8239 2789 8241
2792 8247 2782 8246 2782 8250 2783 8254
2787 8256 2787 8259 2789 8260 2790 8257
2789 8254 2794 8254 2797 8263 2801 8263
TIME...MOT...LOC 1538Z 266DEG 35KT 2791 8244
$$
JOHNSON538
WWUS52 KTBW 311544
SVSTBW
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
1144 AM EDT THU MAR 31 2011
FLC103-311554-
/O.CAN.KTBW.TO.W.0024.000000T0000Z-110331T1600Z/
PINELLAS FL-
1144 AM EDT THU MAR 31 2011
...THE TORNADO WARNING FOR EASTERN PINELLAS COUNTY IS CANCELLED...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 PM EDT THURSDAY AFTERNOON
FOR SOUTHWESTERN FLORIDA.
LAT...LON 2784 8245 2786 8240 2789 8241 2792 8246
2801 8244 2813 8215 2789 8207 2783 8239
2785 8240 2783 8246 2784 8246
TIME...MOT...LOC 1544Z 261DEG 64KT 2792 8228
$$
FLC057-311600-
/O.CON.KTBW.TO.W.0024.000000T0000Z-110331T1600Z/
HILLSBOROUGH FL-
1144 AM EDT THU MAR 31 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL NOON EDT FOR CENTRAL
HILLSBOROUGH COUNTY...
AT 1143 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. LOCATED NEAR BRANDON...MOVING EAST AT 50 MPH.
THE TORNADO WILL BE NEAR...
BRANDON.
DOVER.
THIS IS AN EXTREMELY DANGEROUS SITUATION. TAKE COVER IMMEDIATELY.
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 SOUTHWESTERN FLORIDA.
&&
LAT...LON 2784 8245 2786 8240 2789 8241 2792 8246
2801 8244 2813 8215 2789 8207 2783 8239
2785 8240 2783 8246 2784 8246
TIME...MOT...LOC 1544Z 261DEG 64KT 2792 8228
$$
JOHNSONThe office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 30, 8:57 PM EDT | Special Marine Warning | TBW | 63 min | |
| Mar 31, 1:06 AM EDT | Special Marine Warning | TBW | 54 min | |
| Mar 31, 4:50 AM EDT | Small Craft Advisory | TBW | 17 hr | |
| Mar 31, 5:47 AM EDT | Special Marine Warning | TBW | 58 min | |
| Mar 31, 6:10 AM EDT | Tornado Warning | TBW | Hernando, Pasco | 50 min |
| Mar 31, 6:23 AM EDT | Severe Thunderstorm Warning | TBW | Hillsborough, Pasco, Pinellas | 52 min |
| Mar 31, 6:43 AM EDT | Special Marine Warning | TBW | 62 min | |
| Mar 31, 7:15 AM EDT | Special Weather Statement | TBW | Polk | 45 min |
| Mar 31, 7:30 AM EDT | Severe Thunderstorm Warning | TBW | Polk | 45 min |
| Mar 31, 7:49 AM EDT | Special Marine Warning | TBW | 26 min | |
| Mar 31, 7:53 AM EDT | Severe Thunderstorm Warning | TBW | Hillsborough, Pasco, Pinellas | 52 min |
| Mar 31, 8:24 AM EDT | Tornado Warning | TBW | Hillsborough, Pasco, Pinellas | 51 min |
| Mar 31, 8:38 AM EDT | Special Weather Statement | TBW | Levy | 52 min |
| Mar 31, 8:47 AM EDT | Special Marine Warning | TBW | 58 min | |
| Mar 31, 8:57 AM EDT | Tornado Warning | TBW | Hillsborough, Pasco, Polk | 33 min |
| Mar 31, 9:13 AM EDT | Special Marine Warning | TBW | 92 min | |
| Mar 31, 9:14 AM EDT | Special Weather Statement | TBW | Citrus, Hernando | 46 min |
| Mar 31, 9:26 AM EDT | Special Marine Warning | TBW | 94 min | |
| Mar 31, 9:29 AM EDT | Tornado Warning | TBW | Polk | 19 min |
| Mar 31, 9:36 AM EDT | Special Weather Statement | TBW | Hernando, Sumter | 39 min |
| Mar 31, 9:37 AM EDT | Areal Flood Advisory | TBW | Citrus, Hernando, Pasco, Polk, Sumter | 113 min |
| Mar 31, 9:39 AM EDT | Special Weather Statement | TBW | Levy | 51 min |
| Mar 31, 9:44 AM EDT | Tornado Warning | TBW | Citrus, Hernando, Sumter | 31 min |
| Mar 31, 10:09 AM EDT | Special Marine Warning | TBW | 51 min | |
| Mar 31, 10:14 AM EDT | Severe Thunderstorm Warning | TBW | Hernando, Sumter | 31 min |
| Mar 31, 10:29 AM EDT | Tornado Warning | TBW | Pinellas | 61 min |
| Mar 31, 10:37 AM EDT | Special Weather Statement | TBW | Citrus | 38 min |
| Mar 31, 10:52 AM EDT | Special Marine Warning | TBW | 23 min | |
| Mar 31, 11:09 AM EDT | Special Marine Warning | TBW | 66 min | |
| Mar 31, 11:22 AM EDT | Severe Thunderstorm Warning | TBW | Hillsborough, Manatee, Pinellas | 38 min |
| Mar 31, 11:35 AM EDT | Severe Thunderstorm Warning | TBW | Hillsborough, Polk | 40 min |
| Mar 31, 11:47 AM EDT | Areal Flood Advisory | TBW | Hillsborough, Pinellas | 88 min |
| Mar 31, 11:51 AM EDT | Tornado Warning | TBW | Hillsborough, Polk | 39 min |
| Mar 31, 11:57 AM EDT | Severe Thunderstorm Warning | TBW | Hillsborough, Polk | 33 min |
| Mar 31, 12:01 PM EDT | Special Marine Warning | TBW | 59 min | |
| Mar 31, 12:01 PM EDT | Severe Thunderstorm Warning | TBW | Manatee | 44 min |
| Mar 31, 12:10 PM EDT | Special Weather Statement | TBW | Pinellas | 50 min |
| Mar 31, 12:13 PM EDT | Tornado Warning | TBW | Polk | 32 min |
| Mar 31, 12:16 PM EDT | Flash Flood Warning | TBW | Polk | 59 min |
| Mar 31, 12:23 PM EDT | Severe Thunderstorm Warning | TBW | Polk | 22 min |
| Mar 31, 12:25 PM EDT | Severe Thunderstorm Warning | TBW | Hillsborough, Manatee, Pinellas | 35 min |
| Mar 31, 12:27 PM EDT | Special Marine Warning | TBW | 63 min | |
| Mar 31, 12:53 PM EDT | Special Weather Statement | TBW | Polk | 52 min |
| Mar 31, 1:02 PM EDT | Special Marine Warning | TBW | 118 min | |
| Mar 31, 1:25 PM EDT | Areal Flood Advisory | TBW | Hillsborough, Manatee, Pinellas, Polk | 2 hr |
| Mar 31, 1:29 PM EDT | Severe Thunderstorm Warning | TBW | Hillsborough, Manatee | 31 min |
| Mar 31, 1:34 PM EDT | Special Weather Statement | TBW | Hillsborough, Pinellas | 41 min |
| Mar 31, 2:01 PM EDT | Special Weather Statement | TBW | Manatee | 44 min |
| Mar 31, 2:29 PM EDT | Special Weather Statement | TBW | Manatee, Sarasota | 46 min |
| Mar 31, 2:33 PM EDT | Special Marine Warning | TBW | 57 min | |
| Mar 31, 3:13 PM EDT | Special Weather Statement | TBW | Hernando, Sumter | 47 min |
| Mar 31, 3:16 PM EDT | Special Weather Statement | TBW | Pinellas | 44 min |
| Mar 31, 3:18 PM EDT | Special Marine Warning | TBW | 12 min | |
| Mar 31, 3:21 PM EDT | River Flood Warning | TBW | Pasco | 7 days |
| Mar 31, 3:21 PM EDT | River Flood Warning | TBW | Hillsborough | 3 days |
| Mar 31, 3:35 PM EDT | Special Marine Warning | TBW | 115 min | |
| Mar 31, 4:27 PM EDT | Special Weather Statement | TBW | Manatee, Polk | 63 min |
| Mar 31, 4:39 PM EDT | Severe Thunderstorm Warning | TBW | Hardee, Hillsborough, Manatee, Sarasota | 36 min |
| Mar 31, 4:51 PM EDT | Severe Thunderstorm Warning | TBW | Manatee, Sarasota | 24 min |
| Mar 31, 5:18 PM EDT | Special Marine Warning | TBW | 57 min | |
| Mar 31, 5:22 PM EDT | Special Weather Statement | TBW | DeSoto, Hardee, Highlands, Sarasota | 53 min |
| Mar 31, 6:03 PM EDT | Severe Thunderstorm Warning | TBW | Hillsborough, Pasco, Pinellas | 29 min |
| Mar 31, 6:14 PM EDT | Special Marine Warning | TBW | 61 min | |
| Mar 31, 7:47 PM EDT | Special Marine Warning | TBW | 58 min | |
| Mar 31, 7:55 PM EDT | Special Weather Statement | TBW | Charlotte | 50 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.