Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 17, NWS Tallahassee, FL

February 15, 20217 counties in Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Feb 15, 2021, 2:22 PM CST for 7 counties in Florida. It was in force for 53 min. 13 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: Feb 15, 2021, 2:22 PM CST (20:22 UTC)
Expired: Feb 15, 2021, 3:15 PM CST
In force: 53 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Bay County, FL, Calhoun County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Liberty County, FL, Washington County, FL

The radar

The Eglin Afb radar (KEVX), 72 km from the middle of the area, began a volume at 20:26 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
Feb 15, 2:25 PM CST	TSTM WND DMG	Southport, FL	CARPORT DESTROYED BY STRONG WINDS IN SOUTHPORT. REPORT VIA SOCIAL MEDIA.
Feb 15, 2:30 PM CST	TSTM WND DMG	3 N Porter Lake, FL	REPORT OF SOME DAMAGE TO A FARM WITH A CAR PORT DESTROYED. ALSO SOME DAMAGE TO NEARBY HOMES.
Feb 15, 2:34 PM CST	TSTM WND GST 51	4 Nw Fountain, FL	51 MPH GUST MEASURED AT WUNDERGROUND SITE KFLFOUNT25.
Feb 15, 2:41 PM CST	TORNADO	3 Wsw Ridgetop, FL	PHOTO OF A SNAPPED TREE AND OTHER DEBRIS SCATTERED IN THE AREA ASSOCIATED WITH A BRIEF TDS ON RADAR.
Feb 15, 2:57 PM CST	TSTM WND DMG	2 S White Pond, FL	TREE DOWN ON A TRAILER ALONG NW COUNTY ROAD 274.
Feb 15, 3:00 PM CST	TSTM WND DMG	1 Nne Willis, FL	TREES DOWN ON HIGHWAY 73 IN NORTHERN CALHOUN COUNTY NEAR THE JACKSON COUNTY LINE.
Feb 15, 3:00 PM CST	TSTM WND DMG	Sink Creek, FL	TREE DOWN ACROSS ALL LANES OF HIGHWAY 71.
Feb 15, 3:01 PM CST	TSTM WND GST 40	1 W Greenwood, FL
Feb 15, 3:05 PM CST	TSTM WND DMG	1 Nnw Clarksville, FL
Feb 15, 3:09 PM CST	TSTM WND GST 58	Marianna Municipal A/P, FL
Feb 15, 3:10 PM CST	TSTM WND DMG	1 Se Alford, FL	JACKSON COUNTY EM ADVISES THAT A MOBILE HOME SUSTAINED ROOF DAMAGE ON GREEN ACRES LANE IN ALFORD. NO DISPLACEMENTS OR INJURIES WERE REPORTED.
Feb 15, 3:10 PM CST	TSTM WND DMG	Round Lake, FL	CALHOUN COUNTY DISPATCH REPORTS ONE STRUCTURE WITH STORM-RELATED DAMAGE. CALLER ADVISED THAT A TREE FELL ONTO A TRAILER AT 10393 NW CR 274 IN ALTHA. THE SEVERITY OF DAMAGE IS UNKNOWN, BUT CALLER ADVISED THAT THERE WERE NO INJURIES OR DISPLACEMENTS REPORTED AT
Feb 15, 3:10 PM CST	TSTM WND DMG	Round Lake, FL	WIND DAMAGE WAS REPORTED TO AT LEAST (3) RESIDENTIAL STRUCTURES, NEAR THE INTERSECTION LISTED BELOW, IN ALFORD. CALLER ADVISED NO INJURIES OR DISPLACEMENTS HAD RESULTED FROM THIS INCIDENT, AT THE TIME OF REPORTING. NO DAMAGE TO MAJOR INFRASTRUCTURE WAS REPORTE

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
Feb 15, 11:55 AM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 8.4 hours before the alert went out and 85 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 468 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 252 m²/s²
0-3 km storm-relative helicity: 303 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

238 
WUUS52 KTAE 152022
SVRTAE
FLC005-013-045-059-063-077-133-152115-
/O.NEW.KTAE.SV.W.0017.210215T2022Z-210215T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tallahassee FL
322 PM EST Mon Feb 15 2021

The National Weather Service in Tallahassee has issued a

* Severe Thunderstorm Warning for...
  Jackson County in the Panhandle of Florida...
  Northern Gulf County in the Panhandle of Florida...
  Bay County in the Panhandle of Florida...
  Calhoun County in the Panhandle of Florida...
  Eastern Holmes County in the Panhandle of Florida...
  Western Liberty County in Big Bend of Florida...
  Washington County in the Panhandle of Florida...

* Until 415 PM EST/315 PM CST/.

* At 321 PM EST/221 PM CST/, severe thunderstorms were located along
  a line extending from 8 miles west of Graceville to near Tyndall
  Air Force Base, moving east at 50 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Panama City, Lynn Haven, Callaway, Vernon, Bonifay, Blountstown,
  Marianna, Chipley, Graceville, Springfield, Hiland Park, Stonemill
  Creek, Tyndall Air Force Base, Orange, Bradford, Parker, Malone,
  Wewahitchka, Sneads and Bristol.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 700 PM EST/600 PM CST/ for
Big Bend of and the Panhandle of Florida...and southwestern Georgia.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3099 8574 3100 8500 3093 8498 3088 8493
      3082 8494 3075 8491 3061 8493 3060 8492
      3001 8495 3001 8499 2994 8502 2993 8502
      2993 8504 2999 8567 3000 8569 3004 8576
TIME...MOT...LOC 2021Z 249DEG 45KT 3095 8565 3005 8564 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

11-MM

1 follow-up statement

540 
WWUS52 KTAE 152106
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
406 PM EST Mon Feb 15 2021

FLC005-045-059-133-152116-
/O.CAN.KTAE.SV.W.0017.000000T0000Z-210215T2115Z/
Gulf FL-Bay FL-Holmes FL-Washington FL-
406 PM EST Mon Feb 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN GULF...BAY...EASTERN
HOLMES AND WASHINGTON COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 700 PM EST/600 PM CST/ for
Big Bend of and the Panhandle of Florida...and southwestern Georgia.

LAT...LON 3017 8514 3020 8512 3020 8526 3100 8525
      3100 8500 3093 8498 3088 8493 3082 8494
      3075 8491 3061 8493 3060 8492 3020 8494
      3018 8494 3014 8513
TIME...MOT...LOC 2106Z 249DEG 45KT 3115 8505 3025 8504 

$$

FLC013-063-077-152115-
/O.CON.KTAE.SV.W.0017.000000T0000Z-210215T2115Z/
Jackson FL-Calhoun FL-Liberty FL-
406 PM EST Mon Feb 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM
EST/315 PM CST/ FOR EASTERN JACKSON...CALHOUN COUNTIES IN THE
PANHANDLE OF FLORIDA AND NORTHWESTERN LIBERTY COUNTIES IN BIG BEND OF
FLORIDA...

At 406 PM EST/306 PM CST/, severe thunderstorms were located along a
line extending from 10 miles south of Columbia to 11 miles northeast
of Stonemill Creek, moving east at 50 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Blountstown, Marianna, Orange, Malone, Sneads, Bristol, Grand Ridge,
Greenwood, Altha, Bascom, Clarksville, Ocheesee, Selman, Abe Springs,
Chipola, Lovedale, Scotts Ferry, Kennys Mill, Dellwood and Hugh
Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 700 PM EST/600 PM CST/ for
Big Bend of and the Panhandle of Florida...and southwestern Georgia.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3017 8514 3020 8512 3020 8526 3100 8525
      3100 8500 3093 8498 3088 8493 3082 8494
      3075 8491 3061 8493 3060 8492 3020 8494
      3018 8494 3014 8513
TIME...MOT...LOC 2106Z 249DEG 45KT 3115 8505 3025 8504 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

11-MM

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 15, 1:11 AM CST	Rip Current Statement	TAE	Bay, Franklin, Gulf, Walton	41 hr
Feb 15, 1:16 AM CST	Small Craft Advisory	TAE		29 hr
Feb 15, 12:35 PM CST	Special Marine Warning	TAE		3 hr
Feb 15, 12:53 PM CST	Severe Thunderstorm Warning	TAE	Walton	67 min
Feb 15, 1:12 PM CST	Special Marine Warning	TAE		3 hr
Feb 15, 1:36 PM CST	Severe Thunderstorm Warning	TAE	Bay, Holmes, Jackson, Walton, Washington	54 min
Feb 15, 1:39 PM CST	Wind Chill Advisory	TAE	Holmes, Walton	20 hr
Feb 15, 1:43 PM CST	Severe Thunderstorm Warning	TAE	Lafayette, Madison, Taylor	62 min
Feb 15, 2:02 PM CST	Tornado Warning	TAE	Bay, Walton, Washington	28 min
Feb 15, 2:24 PM CST	Severe Thunderstorm Warning	TAE	Madison	55 min
Feb 15, 2:39 PM CST	Tornado Warning	TAE	Lafayette	21 min
Feb 15, 2:41 PM CST	Tornado Warning	TAE	Bay, Jackson, Washington	12 min
Feb 15, 3:03 PM CST	Severe Thunderstorm Warning	TAE	Calhoun, Gadsden, Jackson, Leon, Liberty, Wakulla	57 min
Feb 15, 3:25 PM CST	Special Marine Warning	TAE		2 hr
Feb 15, 4:11 PM CST	Severe Thunderstorm Warning	TAE	Jefferson, Madison, Taylor	64 min
Feb 15, 4:53 PM CST	Severe Thunderstorm Warning	TAE	Lafayette, Madison, Taylor	26 min
Feb 15, 5:22 PM CST	Special Marine Warning	TAE		38 min
Feb 15, 5:40 PM CST	Severe Thunderstorm Warning	TAE	Dixie	35 min
Feb 15, 5:56 PM CST	Special Marine Warning	TAE		34 min

Nearby

Severe Thunderstorm Warnings in Florida, 2021 Every severe thunderstorm warning in 2021

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.