Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 65, NWS Tallahassee, FL

April 10, 20214 counties in Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Apr 10, 2021, 10:56 AM EDT for 4 counties in Florida. It was in force for 82 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: Apr 10, 2021, 10:56 AM EDT (14:56 UTC)
Expired: Apr 10, 2021, 12:18 PM EDT
In force: 82 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Franklin County, FL, Gadsden County, FL, Leon County, FL, Wakulla County, FL

The radar

The Tallahassee radar (KTLH), 20 km from the middle of the area, began a volume at 14:57 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

Time	Report	Where	Remark
Apr 10, 11:46 AM EDT	TSTM WND DMG	Forest Meadows Park, FL	TREE DOWN BLOCKING ROADWAY AT N MERIDIAN AND MILLERS LANDING.

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
Apr 10, 10:20 AM EDT	Tornado Watch	SPC	4 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 2.9 hours before the alert went out and 21 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: 13 J/kg
Mixed-layer CIN: -541 J/kg
Mixed-layer LCL: 1046 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 276 m²/s²
0-3 km storm-relative helicity: 231 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

206 
WUUS52 KTAE 101456
SVRTAE
FLC037-039-073-129-101630-
/O.NEW.KTAE.SV.W.0065.210410T1456Z-210410T1630Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tallahassee FL
1056 AM EDT Sat Apr 10 2021

The National Weather Service in Tallahassee has issued a

* Severe Thunderstorm Warning for...
  Wakulla County in Big Bend of Florida...
  Eastern Gadsden County in Big Bend of Florida...
  Leon County in Big Bend of Florida...
  Northeastern Franklin County in Big Bend of Florida...

* Until 1230 PM EDT.

* At 1055 AM EDT, severe thunderstorms were located along a line
  extending from Chattahoochee to 10 miles west of Apalachicola,
  moving east at 40 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Tallahassee, Havana, St. Marks, Midway, Woodville, Crawfordville,
  Quincy, Florida State University, Tallahassee Comm College, Doak
  Campbell Stadium, Florida A And M, Wakulla, Sopchoppy, Lake
  Bradford, Wakulla Springs, Florence, Medart, Tallahassee Mall,
  Bloxham and Tallahassee Regional A/P.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 200 PM EDT for Big Bend of
Florida.

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 3001 8464 3001 8455 3007 8463 3022 8468
      3026 8474 3032 8470 3033 8472 3039 8465
      3040 8468 3069 8447 3067 8401 3052 8398
      3052 8404 3044 8407 3010 8407 3010 8402
      2999 8426 2989 8428 2987 8457
TIME...MOT...LOC 1455Z 286DEG 33KT 3069 8483 2969 8510 

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

42-DVD

1 follow-up statement

026 
WWUS52 KTAE 101618
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
1218 PM EDT Sat Apr 10 2021

FLC037-039-073-129-101628-
/O.CAN.KTAE.SV.W.0065.000000T0000Z-210410T1630Z/
Wakulla FL-Gadsden FL-Leon FL-Franklin FL-
1218 PM EDT Sat Apr 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR WAKULLA...EASTERN GADSDEN...
LEON AND NORTHEASTERN FRANKLIN COUNTIES IS CANCELLED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 200 PM EDT for Big Bend of
Florida.

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

LAT...LON 3001 8464 3001 8455 3007 8463 3022 8468
      3026 8474 3032 8470 3033 8472 3039 8465
      3040 8468 3069 8447 3067 8401 3052 8398
      3052 8404 3044 8407 3010 8407 3010 8402
      2999 8426 2989 8428 2987 8457
TIME...MOT...LOC 1616Z 286DEG 33KT 3048 8400 2948 8427 

$$

42-DVD

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 5:47 AM EDT	Special Weather Statement	TAE	Walton	58 min
Apr 10, 6:30 AM EDT	Special Marine Warning	TAE		3 hr
Apr 10, 6:57 AM EDT	Severe Thunderstorm Warning	TAE	Bay, Holmes, Jackson, Walton, Washington	93 min
Apr 10, 7:18 AM EDT	Tornado Warning	TAE	Walton	27 min
Apr 10, 7:34 AM EDT	Tornado Warning	TAE	Holmes, Walton	26 min
Apr 10, 8:21 AM EDT	Severe Thunderstorm Warning	TAE	Bay, Holmes, Jackson, Walton, Washington	84 min
Apr 10, 8:53 AM EDT	Special Marine Warning	TAE		3 hr
Apr 10, 8:59 AM EDT	Severe Thunderstorm Warning	TAE	Bay, Walton, Washington	91 min
Apr 10, 9:31 AM EDT	Tornado Warning	TAE	Bay, Walton	34 min
Apr 10, 9:43 AM EDT	Severe Thunderstorm Warning	TAE	Jackson	62 min
Apr 10, 9:46 AM EDT	Tornado Warning	TAE	Bay	29 min
Apr 10, 9:54 AM EDT	Severe Thunderstorm Warning	TAE	Calhoun, Gulf	77 min
Apr 10, 10:04 AM EDT	Tornado Warning	TAE	Bay, Calhoun, Gulf	26 min
Apr 10, 10:08 AM EDT	Tornado Warning	TAE	Bay, Calhoun	23 min
Apr 10, 10:15 AM EDT	Severe Thunderstorm Warning	TAE	Franklin, Gadsden, Liberty	90 min
Apr 10, 10:20 AM EDT	Special Marine Warning	TAE		3 hr
Apr 10, 10:30 AM EDT	Tornado Warning	TAE	Calhoun, Liberty	30 min
Apr 10, 11:29 AM EDT	Tornado Warning	TAE	Leon	31 min
Apr 10, 11:48 AM EDT	Special Marine Warning	TAE		3 hr
Apr 10, 12:04 PM EDT	Special Weather Statement	TAE	Jefferson	41 min
Apr 10, 12:39 PM EDT	Special Weather Statement	TAE	Jefferson, Madison	66 min
Apr 10, 1:20 PM EDT	Special Weather Statement	TAE	Lafayette, Madison, Taylor	70 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.