Alert archive / Florida / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 20, NWS Tampa Bay, FL

March 31, 2011Polk County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Mar 31, 2011, 12:23 PM EDT for Polk County, Florida. It was in force for 22 min. 2 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, 12:23 PM EDT (16:23 UTC)
Expired: Mar 31, 2011, 12:45 PM EDT
In force: 22 min
Issued by: NWS Tampa Bay, FL
Area: Storm-based polygon

County Polk County, FL

The radar

The Melbourne radar (KMLB), 80 km from the middle of the area, began a volume at 16:24 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, 12:25 PM EDT	FUNNEL CLOUD	5 E Cypress Gardens, FL	RAIN WRAPPED FUNNEL CLOUD NORTH OF HIGHWAY 60 IN LAKE WALES.
Mar 31, 12:25 PM EDT	TSTM WND DMG	Cypress Gardens, FL	TWO LARGE TREES UPROOTED AT APARTMENT COMPLEX. SPOTTER ESTIMATED WIND GUST OF 60 MPH FOR APPROXIMATELY 30 SECONDS.

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 2 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

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, 4.4 hours before the alert went out and 101 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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.

242 
WUUS52 KTBW 311623
SVRTBW
FLC105-311645-
/O.NEW.KTBW.SV.W.0020.110331T1623Z-110331T1645Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
1223 PM EDT THU MAR 31 2011

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL POLK COUNTY IN FLORIDA.

* UNTIL 1245 PM EDT

* AT 1220 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN
  EXCESS OF 70 MPH.  THIS STORM WAS LOCATED NEAR CYPRESS GARDENS...OR
  NEAR WINTER HAVEN...AND MOVING EAST AT 55 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CYPRESS GARDENS.
  HAINES CITY

WIND GUSTS TO 73 MPH HAVE BEEN MEASURED AT WINTER HAVEN AIRPORT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY 
AWAY FROM WINDOWS.

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

&&

LAT...LON 2801 8138 2803 8142 2800 8142 2798 8170
      2817 8172 2818 8151 2814 8151 2814 8146
      2813 8145 2809 8144 2809 8135 2805 8134
TIME...MOT...LOC 1623Z 261DEG 49KT 2803 8165

$$

JOHNSON

2 follow-up statements

219 
WWUS52 KTBW 311635
SVSTBW

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
1235 PM EDT THU MAR 31 2011

FLC105-311645-
/O.CON.KTBW.SV.W.0020.000000T0000Z-110331T1645Z/
POLK FL-
1235 PM EDT THU MAR 31 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 PM EDT
FOR CENTRAL POLK COUNTY...

AT 1230 PM EDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 70
MPH.  THIS STORM WAS LOCATED 9 MILES SOUTHEAST OF DAVENPORT...OR 7
MILES SOUTHEAST OF HAINES CITY...MOVING EAST AT 55 MPH.

THE SEVERE THUNDERSTORM WILL AFFECT PORTIONS OF...
  DAVENPORT.

WINDS OF 70 TO 80 MPH HAVE BEEN COMMON ACROSS CENTRAL POLK COUNTY 
WITH THIS STORM. THIS IS A VERY DANGEROUS STORM. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2801 8138 2803 8142 2800 8142 2799 8155
      2817 8162 2818 8151 2814 8151 2814 8146
      2813 8145 2809 8144 2809 8135 2805 8134
TIME...MOT...LOC 1635Z 261DEG 49KT 2805 8147

$$

JOHNSON

296 
WWUS52 KTBW 311645 RRA
SVSTBW

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
1245 PM EDT THU MAR 31 2011

FLC105-311656-
/O.EXP.KTBW.SV.W.0020.000000T0000Z-110331T1645Z/
POLK FL-
1245 PM EDT THU MAR 31 2011

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL POLK COUNTY HAS
EXPIRED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT THURSDAY EVENING
FOR SOUTHWESTERN FLORIDA.

LAT...LON 2801 8138 2803 8142 2800 8142 2799 8155
      2817 8162 2818 8151 2814 8151 2814 8146
      2813 8145 2809 8144 2809 8135 2805 8134
TIME...MOT...LOC 1635Z 261DEG 49KT 2805 8147

$$

JOHNSON

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tampa Bay, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 31, 9:58 AM EDT, 2 hours 25 minutes earlier.

Area forecast discussion, Mar 31, 9:58 AM EDT, 2 hours 25 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
958 AM EDT THU MAR 31 2011

.UPDATE...BUSY MORNING ACROSS WEST CENTRAL FLORIDA WITH INTENSE
AREA OF THUNDERSTORMS SPAWNING MULTIPLE TORNADOES. THE GRIDS WILL
ONLY BE UPDATED FOR MAJOR CHANGES SUCH AS ANY CHANGES TO OUR
WATCHES.

EXPECT THIS LINE OF SHOWERS AND STORMS TO CONTINUE THROUGH AT
LEAST MID AFTERNOON BEFORE A COLD FRONT PUSHES THE ACTIVITY OUT TO
THE EAST.

&&

.AVIATION...
STRONG TO SEVERE CONVECTION REMAINING NORTH OF THE TERMINAL SITES
EARLY THIS MORNING WITH A SOUTHWARD PROGRESSION NOTED IN RADAR
DATA. EXPECT AN INCREASE IN MVFR/IFR CONDITIONS AT PIE-TPA-SRQ
LATER THIS MORNING INTO EARLY THIS AFTERNOON. SRQ AND FMY-RSW WILL
SEE AN INCREASE IN CONVECTIVE ACTIVITY MID-LATER AFTERNOON AS THE
FRONTAL SYSTEM PUSHES SOUTH AND EAST...OTHERWISE VFR CONDITIONS
EXPECTED OVER SOUTHERN TERMINALS THROUGH THE EARLY AFTERNOON.

&&

.MARINE...HAZARDOUS WEATHER CONDITIONS EXIST OVER THE COASTAL
WATERS TODAY. NUMEROUS SHOWERS AND STORMS...SOME SEVERE...WILL
CONTINUE THROUGH MUCH OF THE DAY. THE ACTIVITY HAS BEEN PRIMARILY
NORTH OF TARPON SPRINGS BUT WILL SOON MOVE SOUTHEAST ACROSS THE
REMAINDER OF THE WATERS.

&&

.TBW WATCHES/WARNINGS/ADVISORIES...

FL...NONE.
GULF WATERS...SMALL CRAFT ADVISORY UNTIL 10 PM EDT THIS EVENING
     FOR ENGLEWOOD TO TARPON SPRINGS OUT 20 NM-ENGLEWOOD TO TARPON
     SPRINGS OUT 20 TO 60 NM-TAMPA BAY WATERS-TARPON SPRINGS TO
     SUWANNEE RIVER OUT 20 NM-TARPON SPRINGS TO SUWANNEE RIVER OUT
     20 TO 60 NM.

&&

UPDATE/MARINE...JILLSON
AVIATION...LAMARRE

Hazardous weather outlook, Mar 31, 5:52 AM EDT, 6 hours 31 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
552 AM EDT THU MAR 31 2011

FLZ039-042-043-048>052-055>057-060>062-065-312200-
LEVY-CITRUS-SUMTER-HERNANDO-PASCO-PINELLAS-HILLSBOROUGH-POLK-
MANATEE-HARDEE-HIGHLANDS-SARASOTA-DE SOTO-CHARLOTTE-LEE-
552 AM EDT THU MAR 31 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL AND SOUTHWEST
FLORIDA.

.DAY ONE...TODAY AND TONIGHT.

...THUNDERSTORM IMPACT...
A COLD FRONT WILL MOVE ACROSS THE AREA LATER TODAY BRINGING
SHOWERS AND THUNDERSTORMS. SOME OF THESE STORMS COULD BE STRONG
TO SEVERE AND PRODUCE DAMAGING WINDS AND AN ISOLATED TORNADO.
OTHERWISE STORMS WILL CONTAIN DEADLY LIGHTNING AND LOCALLY HEAVY
RAINFALL RESULTING IN MINOR FLOODING OF LOW LYING AND POOR
DRAINAGE AREAS.

...RIP CURRENT IMPACT...
MODERATE SOUTH TO SOUTHWEST WINDS TODAY WILL ALLOW FOR A MODERATE
RISK OF RIP CURRENTS AT AREA BEACHES. A RIP CURRENT IS A
10 TO 30 YARD WIDE CHANNEL OF WATER THAT CAN PULL EVEN A STRONG
SWIMMER INTO DEEPER WATER.

TO AVOID GETTING CAUGHT IN A RIP CURRENT...SWIM AT GUARDED
BEACHES AND HEED THE ADVICE OF THE BEACH PATROL. AT UNGUARDED
BEACHES AND NEAR PIERS...JETTIES...AND INLETS...DO NOT GO INTO THE
SURF MUCH ABOVE YOUR KNEES.

IF CAUGHT IN THE SEAWARD PULL OF A RIP CURRENT...DO NOT ATTEMPT
TO MOVE DIRECTLY TOWARD SHORE. INSTEAD...MOVE SIDEWAYS ACROSS THE
RIP CURRENT UNTIL THE PULL EASES. ANOTHER METHOD OF ESCAPE IS TO
LET THE RIP CURRENT PULL YOU SEAWARD 50 TO 100 YARDS...WHERE THE
FORCE WEAKENS. THEN...SWIM TOWARD THE BEACH AT AN ANGLE AWAY FROM
THE CURRENT.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS SHOULD MONITOR THE WEATHER.
FORMAL ACTIVATION MAY BE NEEDED.

CARLISLE

In the hours before

Local storm report, Mar 31, 11:59 AM EDT, 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
1159 AM EDT THU MAR 31 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1155 AM     HAIL             3 W PLANT CITY          28.01N 82.18W
03/31/2011  M0.75 INCH       HILLSBOROUGH       FL   TRAINED SPOTTER

&&

ASM

Local storm report, Mar 31, 12:06 PM EDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
1206 PM EDT THU MAR 31 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1206 PM     TORNADO          MULBERRY                27.90N 81.97W
03/31/2011                   POLK               FL   AMATEUR RADIO

            TORNADO SPOTTED ON GROUND IN MULBERRY.

&&

NOAH

Special weather statement, Mar 31, 12:10 PM EDT, 13 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
1210 PM EDT THU MAR 31 2011

FLZ050-051-311700-
PINELLAS-HILLSBOROUGH-
1210 PM EDT THU MAR 31 2011

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR SOUTHWESTERN
HILLSBOROUGH AND SOUTHERN PINELLAS COUNTIES FOR STRONG THUNDERSTORMS
WITH STRONG WIND GUSTS VALID UNTIL 100 PM EDT...

AT 1206 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATES
STRONG THUNDERSTORMS LOCATED NEAR SAINT PETERSBURG...MOVING EAST AT
40 MPH WILL AFFECT SAINT PETERSBURG BEACH...SAINT PETERSBURG...
LEALMAN AND KENNETH CITY.

THIS INCLUDES INTERSTATE 275 BETWEEN EXITS 6 AND 26.

GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED WHICH CAN CAUSE UNSECURED
OBJECTS TO BLOW AROUND...SNAP TREE LIMBS AND CAUSE POWER OUTAGES.
FREQUENT TO CONTINUOUS LIGHTNING IS EXPECTED. TO BE SAFE GO INDOORS
IMMEDIATELY. IF CAUGHT OUTSIDE...FIND A LOW SPOT...AND STAY AWAY FROM
TALL OBJECTS. TORRENTIAL RAINS WILL REDUCE VISIBILITY TO NEAR ZERO
AND WILL CAUSE PONDING OF WATER ON ROADWAYS.

&&

LAT...LON 2783 8260 2779 8260 2778 8262 2773 8261
      2768 8266 2763 8266 2762 8274 2765 8275
      2767 8273 2768 8275 2771 8275 2777 8278
      2780 8282 2785 8284
TIME...MOT...LOC 1611Z 274DEG 35KT 2774 8261

JOHNSON

Local storm report, Mar 31, 12:20 PM EDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
1220 PM EDT THU MAR 31 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1215 PM     TSTM WND GST     WINTER HAVEN AIRPORT    28.06N 81.75W
03/31/2011  M73 MPH          POLK               FL   ASOS

            63 KNOT WIND GUST AT KGIF ASOS.

&&

JILLSON

Local storm report, Mar 31, 12:21 PM EDT, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
1221 PM EDT THU MAR 31 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1205 PM     TSTM WND GST     LAKELAND HIGHLANDS      27.96N 81.95W
03/31/2011  E66 MPH          POLK               FL   MESONET

            HOME WEATHER STATION.

&&

NOAH

Local storm report, Mar 31, 12:23 PM EDT, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
1223 PM EDT THU MAR 31 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1205 PM     NON-TSTM WND DMG LAKELAND LINDER AIRPORT 27.99N 82.02W
03/31/2011                   POLK               FL   EMERGENCY MNGR

            HANGER COLLAPSE WITH PEOPLE INSIDE. PLANES FLIPPED OVER
            AT SUN N FUN EVENT.

&&

NOAH

The 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, 11:14 AM EDT	Tornado Warning	TBW	Hillsborough, Pinellas	46 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, 12:25 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

Severe Thunderstorm Warnings in Florida, 2011 Every severe thunderstorm warning 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.