Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 31, NWS Tallahassee, FL

March 18, 20218 counties in Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Mar 18, 2021, 6:19 AM CDT for 8 counties in Florida. It was in force for 86 min. 7 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 18, 2021, 6:19 AM CDT (11:19 UTC)
Expired: Mar 18, 2021, 7:45 AM CDT
In force: 86 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

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

The radar

The Tallahassee radar (KTLH), 74 km from the middle of the area, began a volume at 11:23 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 18, 6:20 AM CDT	TSTM WND DMG	Bayou George, FL	REPORT OF FENCES DOWN AND ROOF DAMAGE NEAR BAYOU GEORGE.
Mar 18, 6:25 AM CDT	TORNADO	Bayou George, FL	EF1 TORNADO CONFIRMED FROM STORM SURVEY.
Mar 18, 6:30 AM CDT	TSTM WND DMG	Chipley, FL	A FEW TREES DOWN IN CHIPLEY, ONE ON A POWERLINE.
Mar 18, 6:32 AM CDT	MARINE TSTM WIND 40	4 Se Tyndall Afb, FL	AWOS STATION KTDR 4 SE TYNDALL AFB.
Mar 18, 6:35 AM CDT	TSTM WND DMG	3 Se Chipley Municipal, FL	TREE REPORTED DOWN ON MOBILE HOME NEAR CORBIN RD.
Mar 18, 6:42 AM CDT	TSTM WND DMG	Campbellton, FL	A FEW TREES REPORTED DOWN IN JACKSON COUNTY NEAR CAMPBELLTON.
Mar 18, 7:40 AM CDT	TORNADO	5 W Telogia, FL	TDS OBSERVED ON RADAR IN FORESTED AREA WITH TREE DAMAGE. NO STRUCTURAL DAMAGE REPORTED.

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 17, 11:02 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 11.3 hours before the alert went out and 76 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: 1019 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 126 m²/s²
0-3 km storm-relative helicity: 171 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

329 
WUUS52 KTAE 181119
SVRTAE
FLC005-013-037-045-059-063-077-133-181245-
/O.NEW.KTAE.SV.W.0031.210318T1119Z-210318T1245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tallahassee FL
719 AM EDT Thu Mar 18 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...
  Liberty County in Big Bend of Florida...
  Washington County in the Panhandle of Florida...
  Northwestern Franklin County in Big Bend of Florida...

* Until 845 AM EDT/745 AM CDT/.

* At 719 AM EDT/619 AM CDT/, severe thunderstorms were located along
  a line extending from near Chipley to near Tyndall Air Force Base,
  moving east at 35 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 900 AM EDT/800 AM CDT/ for
the Panhandle of Florida...and southwestern Georgia.

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Tallahassee.

&&

LAT...LON 3100 8500 3093 8498 3088 8493 3082 8494
      3075 8491 3071 8486 3061 8493 3060 8488
      3053 8488 3053 8483 2993 8483 2991 8553
      2993 8557 3099 8580
TIME...MOT...LOC 1119Z 264DEG 29KT 3073 8557 3000 8552 

HAIL...<.75IN
WIND...60MPH
 
$$

42-DVD

2 follow-up statements

786 
WWUS52 KTAE 181145
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
745 AM EDT Thu Mar 18 2021

FLC059-181155-
/O.CAN.KTAE.SV.W.0031.000000T0000Z-210318T1245Z/
Holmes FL-
745 AM EDT Thu Mar 18 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN HOLMES COUNTY 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 900 AM EDT/800 AM CDT/ for
southeastern Alabama...the Panhandle of Florida...and southwestern
Georgia.

LAT...LON 3100 8546 3100 8500 3093 8498 3088 8493
      3082 8494 3075 8491 3071 8486 3061 8493
      3060 8488 3053 8488 3053 8483 2993 8483
      2991 8552
TIME...MOT...LOC 1145Z 243DEG 30KT 3099 8539 3003 8529 

$$

FLC005-013-037-045-063-077-133-181245-
/O.CON.KTAE.SV.W.0031.000000T0000Z-210318T1245Z/
Jackson FL-Gulf FL-Bay FL-Calhoun FL-Liberty FL-Washington FL-
Franklin FL-
745 AM EDT Thu Mar 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 AM
EDT/745 AM CDT/ FOR JACKSON...NORTHERN GULF...EASTERN BAY AND CALHOUN
COUNTIES IN THE PANHANDLE OF FLORIDA...LIBERTY COUNTY IN BIG BEND OF
FLORIDA...SOUTHEASTERN WASHINGTON COUNTY IN THE PANHANDLE OF FLORIDA
AND NORTHWESTERN FRANKLIN COUNTIES IN BIG BEND OF FLORIDA...

At 745 AM EDT/645 AM CDT/, severe thunderstorms were located along a
line extending from 6 miles southwest of Cottonwood to 8 miles
southwest of Wewahitchka, moving northeast at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Blountstown, Marianna, Mexico Beach, Stonemill Creek, Chattahoochee,
Tyndall Air Force Base, Orange, Malone, Wewahitchka, Sneads, Bristol,
Cottondale, Grand Ridge, Greenwood, Altha, Alford, Campbellton,
Bascom, Rock Bluff and Honeyville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 900 AM EDT/800 AM CDT/ for
southeastern Alabama...the Panhandle of Florida...and southwestern
Georgia.

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Tallahassee.

&&

LAT...LON 3100 8546 3100 8500 3093 8498 3088 8493
      3082 8494 3075 8491 3071 8486 3061 8493
      3060 8488 3053 8488 3053 8483 2993 8483
      2991 8552
TIME...MOT...LOC 1145Z 243DEG 30KT 3099 8539 3003 8529 

HAIL...<.75IN
WIND...60MPH
 
$$

42-DVD

282 
WWUS52 KTAE 181235
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
835 AM EDT Thu Mar 18 2021

FLC005-133-181245-
/O.CAN.KTAE.SV.W.0031.000000T0000Z-210318T1245Z/
Bay FL-Washington FL-
835 AM EDT Thu Mar 18 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN BAY AND SOUTHEASTERN
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 900 AM EDT/800 AM CDT/ for
the Panhandle of Florida. A Tornado Watch also remains in effect
until 100 PM EDT/noon CDT/ for Big Bend of and the Panhandle of
Florida...and southwestern Georgia.

LAT...LON 3066 8499 3082 8494 3075 8491 3071 8486
      3061 8493 3060 8488 3053 8488 3053 8483
      2993 8483 2992 8520 3030 8503
TIME...MOT...LOC 1235Z 264DEG 29KT 3103 8492 3007 8483 

$$

FLC013-037-045-063-077-181245-
/O.CON.KTAE.SV.W.0031.000000T0000Z-210318T1245Z/
Jackson FL-Gulf FL-Calhoun FL-Liberty FL-Franklin FL-
835 AM EDT Thu Mar 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 AM
EDT/745 AM CDT/ FOR SOUTHEASTERN JACKSON...EAST CENTRAL GULF AND
NORTHEASTERN CALHOUN COUNTIES IN THE PANHANDLE OF FLORIDA...LIBERTY
AND NORTHWESTERN FRANKLIN COUNTIES IN BIG BEND OF FLORIDA...

At 835 AM EDT/735 AM CDT/, severe thunderstorms were located along a
line extending from near Donalsonville to 17 miles northwest of
Carrabelle, moving east at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Chattahoochee, Orange, Sneads, Bristol, Rock Bluff, Vilas, Jensen
Place, Central City, Owens Bridge, Kern, Wilma, Lewis, Sumatra,
Woods, Willis Landing, Torreya State Park, Nixon Garden, Twin Pole,
Roy and Dalkeith.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 900 AM EDT/800 AM CDT/ for
the Panhandle of Florida. A Tornado Watch also remains in effect
until 100 PM EDT/noon CDT/ for Big Bend of and the Panhandle of
Florida...and southwestern Georgia.

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Tallahassee.

&&

LAT...LON 3066 8499 3082 8494 3075 8491 3071 8486
      3061 8493 3060 8488 3053 8488 3053 8483
      2993 8483 2992 8520 3030 8503
TIME...MOT...LOC 1235Z 264DEG 29KT 3103 8492 3007 8483 

HAIL...<.75IN
WIND...60MPH
 
$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 18, 3:18 AM CDT	Special Marine Warning	TAE		3 hr
Mar 18, 3:45 AM CDT	Special Weather Statement	TAE	Holmes, Walton	75 min
Mar 18, 4:29 AM CDT	Severe Thunderstorm Warning	TAE	Holmes, Walton, Washington	61 min
Mar 18, 5:40 AM CDT	Severe Thunderstorm Warning	TAE	Bay, Walton, Washington	64 min
Mar 18, 5:44 AM CDT	Special Marine Warning	TAE		3 hr
Mar 18, 6:02 AM CDT	Tornado Warning	TAE	Bay, Washington	28 min
Mar 18, 6:05 AM CDT	Tornado Warning	TAE	Bay, Calhoun, Gulf	40 min
Mar 18, 6:48 AM CDT	Tornado Warning	TAE	Bay, Gulf	27 min
Mar 18, 7:19 AM CDT	Severe Thunderstorm Warning	TAE	Calhoun, Franklin, Gadsden, Gulf, Leon, Liberty and 1 more	56 min
Mar 18, 7:24 AM CDT	Severe Thunderstorm Warning	TAE	Gadsden, Leon, Liberty	51 min
Mar 18, 8:08 AM CDT	Special Marine Warning	TAE		2 hr
Mar 18, 8:11 AM CDT	Severe Thunderstorm Warning	TAE	Franklin, Gadsden, Gulf, Jefferson, Leon, Liberty and 1 more	64 min
Mar 18, 9:07 AM CDT	Special Weather Statement	TAE	Jefferson, Wakulla	38 min
Mar 18, 9:52 AM CDT	Special Weather Statement	TAE	Jefferson, Madison	53 min
Mar 18, 10:04 AM CDT	Special Marine Warning	TAE		116 min
Mar 18, 10:49 AM CDT	Special Weather Statement	TAE	Taylor	41 min
Mar 18, 11:36 AM CDT	Special Weather Statement	TAE	Dixie, Lafayette	84 min
Mar 18, 11:55 AM CDT	Special Marine Warning	TAE		110 min
Mar 18, 12:21 PM CDT	Tornado Warning	TAE	Dixie, Lafayette, Taylor	24 min
Mar 18, 12:44 PM CDT	Severe Thunderstorm Warning	TAE	Dixie, Lafayette	31 min
Mar 18, 1:06 PM CDT	Special Weather Statement	TAE	Dixie	39 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.