Alert archive / Florida / Tornado Warnings in 2011

Tornado Warning 17, NWS Tallahassee, FL

March 31, 2011Dixie County, Florida

NWS Tallahassee, FL issued this tornado warning at Mar 31, 2011, 7:52 AM EDT for Dixie County, Florida. It was in force for 23 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, 7:52 AM EDT (11:52 UTC)
Expired: Mar 31, 2011, 8:15 AM EDT
In force: 23 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon

County Dixie County, FL

The radar

The Tallahassee radar (KTLH), 141 km from the middle of the area, began a volume at 11:56 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, 8:01 AM EDT	HAIL 1	Horseshoe Beach, FL	EMERGENCY MANAGER REPORTS QUARTER SIZE HAIL. TIME IS ESTIMATED BASED ON REPORT AND RADAR DATA.

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

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 11.9 hours before the alert went out and 139 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: 156 J/kg
Mixed-layer CIN: -94 J/kg
Mixed-layer LCL: 644 m above ground
0-6 km bulk shear: 87 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 11 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

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

901 
WFUS52 KTAE 311152
TORTAE
FLC029-311215-
/O.NEW.KTAE.TO.W.0017.110331T1152Z-110331T1215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
752 AM EDT THU MAR 31 2011

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL DIXIE COUNTY IN FLORIDA...

* UNTIL 815 AM EDT

* AT 748 AM EDT...A DEVELOPING TORNADO HAS BEEN DETECTED BY THE
  NATIONAL WEATHER SERVICE 27 MILES SOUTHWEST OF CROSS CITY...OR 37
  MILES WEST OF CHIEFLAND...MOVING NORTHEAST AT 50 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  HORSESHOE BEACH...EUGENE...SHAMROCK...OLD TOWN...JONESBORO...HINES
  AND CROSS CITY AIRPORT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! LEAVE MOBILE HOMES AND VEHICLES FOR SAFER STRUCTURES.
MOVE TO A HALLWAY OR CLOSET ON THE LOWEST FLOOR AWAY FROM WINDOWS AND
OUTSIDE WALLS.

&&

LAT...LON 2941 8323 2943 8326 2943 8330 2946 8332
      2947 8333 2948 8334 2949 8340 2954 8342
      2961 8342 2979 8321 2958 8295
TIME...MOT...LOC 1152Z 228DEG 42KT 2941 8343

$$

25-CAMP

1 follow-up statement

724 
WWUS52 KTAE 311215
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
815 AM EDT THU MAR 31 2011

FLC029-311224-
/O.EXP.KTAE.TO.W.0017.000000T0000Z-110331T1215Z/
DIXIE FL-
815 AM EDT THU MAR 31 2011

...THE TORNADO WARNING FOR CENTRAL DIXIE COUNTY WILL EXPIRE AT 815 AM
EDT...

THE ROTATION WITH THE STORM HAS WEAKENED AND THE THREAT OF A TORNADO 
HAS DIMINISHED.

RELAY REPORTS OF SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE IN
TALLAHASSEE AT (8 5 0) 9 4 2 8 8 3 3. OR...YOU MAY CONTACT THE
NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT.
THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.

LAT...LON 2941 8323 2943 8326 2943 8330 2946 8332
      2947 8333 2948 8334 2949 8340 2954 8342
      2961 8342 2979 8321 2958 8295
TIME...MOT...LOC 1214Z 228DEG 42KT 2957 8320

$$

25-CAMP

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 31, 6:32 AM EDT	Special Marine Warning	TAE		58 min
Mar 31, 7:11 AM EDT	Special Marine Warning	TAE		64 min
Mar 31, 7:38 AM EDT	Severe Thunderstorm Warning	TAE	Dixie	52 min
Mar 31, 8:03 AM EDT	Special Marine Warning	TAE		57 min
Mar 31, 8:56 AM EDT	Special Marine Warning	TAE		39 min
Mar 31, 2:51 PM EDT	Fire Weather Watch	TAE	Bay, Calhoun, Dixie, Franklin, Gadsden, Gulf and 10 more	44 hr
Mar 31, 2:51 PM EDT	Red Flag Warning	TAE	Bay, Calhoun, Dixie, Franklin, Gadsden, Gulf and 10 more	29 hr

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.