Alert archive / Florida / Tornado Warnings in 2011

Tornado Warning 16, NWS Tampa Bay, FL

March 30, 2011Citrus County, Sumter County, Florida

NWS Tampa Bay, FL issued this tornado warning at Mar 30, 2011, 3:38 PM EDT for Citrus County, Sumter County, Florida. It was in force for 37 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, 3:38 PM EDT (19:38 UTC)
Expired: Mar 30, 2011, 4:15 PM EDT
In force: 37 min
Issued by: NWS Tampa Bay, FL
Area: Storm-based polygon

Counties Citrus County, FL, Sumter County, FL

The radar

The Tampa radar (KTBW), 141 km from the middle of the area, began a volume at 19:38 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 30, 3:52 PM EDT	TSTM WND GST 60	Beverly Hills, FL	REPORTED FROM HOME WEATHER STATION.

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 30, 11:10 AM EDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 7.6 hours before the alert went out and 141 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: 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.

782 
WFUS52 KTBW 301938
TORTBW
FLC017-119-302015-
/O.NEW.KTBW.TO.W.0016.110330T1938Z-110330T2015Z/

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

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

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

* UNTIL 415 PM EDT

* AT 333 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO NEAR BEVERLY HILLS...MOVING EAST AT 40 MPH.

* THE TORNADO WILL BE NEAR...
  BEVERLY HILLS.
  WILDWOOD.

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.

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

&&

LAT...LON 2902 8255 2903 8242 2903 8239 2901 8236
      2898 8234 2898 8232 2896 8231 2896 8199
      2884 8199 2885 8257
TIME...MOT...LOC 1938Z 269DEG 36KT 2894 8246

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 29, 10:20 PM EDT	Special Weather Statement	TBW	Highlands	40 min
Mar 30, 1:45 PM EDT	Small Craft Advisory	TBW		8 hr
Mar 30, 2:11 PM EDT	Special Marine Warning	TBW		94 min
Mar 30, 2:33 PM EDT	Tornado Warning	TBW	Levy	42 min
Mar 30, 3:17 PM EDT	Severe Thunderstorm Warning	TBW	Citrus, Hernando, Levy, Pasco, Sumter	43 min
Mar 30, 3:42 PM EDT	Special Marine Warning	TBW		63 min
Mar 30, 3:55 PM EDT	Tornado Warning	TBW	Citrus, Sumter	20 min
Mar 30, 4:00 PM EDT	Severe Thunderstorm Warning	TBW	Citrus, Hernando, Pasco, Polk, Sumter	30 min
Mar 30, 4:26 PM EDT	Special Weather Statement	TBW	Polk	64 min
Mar 30, 5:18 PM EDT	Special Weather Statement	TBW	Polk	57 min
Mar 30, 7:59 PM EDT	Special Marine Warning	TBW		61 min

Nearby

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