Alert archive / Florida / Tornado Warnings in 2011

Tornado Warning 17, NWS Tampa Bay, FL

March 30, 2011Citrus County, Sumter County, Florida

NWS Tampa Bay, FL issued this tornado warning at Mar 30, 2011, 3:55 PM EDT for Citrus County, Sumter County, Florida. It was in force for 20 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 30, 2011, 3:55 PM EDT (19:55 UTC)
Expired
Mar 30, 2011, 4:15 PM EDT
In force
20 min
Issued by
NWS Tampa Bay, FL
Area
Storm-based polygon

Counties Citrus County, FL, Sumter County, FL

The radar

The Tampa radar (KTBW), 121 km from the middle of the area, began a volume at 19:57 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 30, 4:05 PM EDTTORNADO3 Se Lake Panasoffkee, FLREPORTED ON THE GROUND MOVING EAST NEAR INTERSTATE 75 AND COUNTY ROAD 470. REPORTED BY EMS.

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 30, 11:10 AM EDTTornado WatchSPC8 hr

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 7.9 hours before the alert went out and 121 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 2011-03-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 681 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 2011-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 169 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
681 J/kg
Mixed-layer CIN
-103 J/kg
Mixed-layer LCL
723 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
169 m²/s²
0-3 km storm-relative helicity
198 m²/s²
Significant tornado parameter
0.3
Supercell composite
5.0

Open this sounding in Storm Lab

The text

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

003 
WFUS52 KTBW 301955
TORTBW
FLC017-119-302015-
/O.NEW.KTBW.TO.W.0017.110330T1955Z-110330T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
355 PM EDT WED MAR 30 2011

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN SUMTER COUNTY IN FLORIDA.
  EASTERN CITRUS COUNTY IN FLORIDA.

* UNTIL 415 PM EDT

* AT 350 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 8 MILES WEST OF LAKE PANASOFFKEE...OR 6 MILES SOUTHEAST OF
  INVERNESS...MOVING EAST AT 55 MPH.

* THE TORNADO WILL BE NEAR...
  LAKE PANASOFFKEE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING LARGE
HAIL AND WIDESPREAD DAMAGING WINDS.

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 800 PM EDT WEDNESDAY EVENING
FOR NORTHWESTERN FLORIDA.

&&

LAT...LON 2871 8194 2870 8227 2877 8229 2885 8229
      2885 8194
TIME...MOT...LOC 1955Z 263DEG 49KT 2881 8214

$$
1 follow-up statement
463 
WWUS52 KTBW 302006
SVSTBW

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
406 PM EDT WED MAR 30 2011

FLC017-119-302015-
/O.CON.KTBW.TO.W.0017.000000T0000Z-110330T2015Z/
SUMTER FL-CITRUS FL-
406 PM EDT WED MAR 30 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM EDT FOR
SOUTHEASTERN CITRUS AND NORTHERN SUMTER COUNTIES...

AT 357 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.   LOCATED NEAR LAKE PANASOFFKEE...OR NEAR
WILDWOOD...MOVING EAST AT 55 MPH.

THE TORNADO WILL BE NEAR...
  COLEMAN.

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.

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING LARGE
HAIL AND WIDESPREAD DAMAGING WINDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING
FOR NORTHWESTERN FLORIDA.

&&

LAT...LON 2871 8194 2870 8227 2877 8229 2885 8229
      2885 8194
TIME...MOT...LOC 2006Z 263DEG 49KT 2882 8197

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 29, 10:20 PM EDTSpecial Weather StatementTBWHighlands40 min
Mar 30, 1:45 PM EDTSmall Craft AdvisoryTBW8 hr
Mar 30, 2:11 PM EDTSpecial Marine WarningTBW94 min
Mar 30, 2:33 PM EDTTornado WarningTBWLevy42 min
Mar 30, 3:17 PM EDTSevere Thunderstorm WarningTBWCitrus, Hernando, Levy, Pasco, Sumter43 min
Mar 30, 3:38 PM EDTTornado WarningTBWCitrus, Sumter37 min
Mar 30, 3:42 PM EDTSpecial Marine WarningTBW63 min
Mar 30, 4:00 PM EDTSevere Thunderstorm WarningTBWCitrus, Hernando, Pasco, Polk, Sumter30 min
Mar 30, 4:26 PM EDTSpecial Weather StatementTBWPolk64 min
Mar 30, 5:18 PM EDTSpecial Weather StatementTBWPolk57 min
Mar 30, 7:59 PM EDTSpecial Marine WarningTBW61 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.