Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 47, NWS Tallahassee, FL

April 9, 2021Franklin County, Gulf County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Apr 9, 2021, 5:15 AM EDT for Franklin County, Gulf County, Florida. It was in force for 45 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 9, 2021, 5:15 AM EDT (09:15 UTC)
Expired: Apr 9, 2021, 6:00 AM EDT
In force: 45 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Franklin County, FL, Gulf County, FL

The radar

The Tallahassee radar (KTLH), 87 km from the middle of the area, began a volume at 09:17 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 9, 5:15 AM EDT	HAIL 1	Howard Creek, FL	PHOTO OF HAIL FROM HOWARD CREEK APPEARS TO BE AT LEAST QUARTER SIZE.

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, 9.3 hours before the alert went out and 90 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: 527 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 645 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 153 m²/s²
0-3 km storm-relative helicity: 138 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 5.2

Open this sounding in Storm Lab

The text

As transmitted.

063 
WUUS52 KTAE 090915
SVRTAE
FLC037-045-091000-
/O.NEW.KTAE.SV.W.0047.210409T0915Z-210409T1000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tallahassee FL
515 AM EDT Fri Apr 9 2021

The National Weather Service in Tallahassee has issued a

* Severe Thunderstorm Warning for...
  Southeastern Gulf County in the Panhandle of Florida...
  Western Franklin County in Big Bend of Florida...

* Until 600 AM EDT/500 AM CDT/.

* At 513 AM EDT/413 AM CDT/, a severe thunderstorm was located 12
  miles east of Port St. Joe, moving east at 25 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...
  Eastpoint, Apalachicola, Franklin, Buck Siding, High Bluff, Odena,
  Tilton, Beverly, Green Point, Bay City, Howard Creek, Willis
  Landing, Creels, Hays Place, Fort Gadsden and Apalachicola Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2973 8519 2999 8517 2999 8503 2997 8502
      2999 8501 3000 8473 2972 8484
TIME...MOT...LOC 0913Z 260DEG 21KT 2986 8510 

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

22-BARRY

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 2:48 AM EDT	Special Marine Warning	TAE		57 min
Apr 9, 4:16 AM EDT	Special Weather Statement	TAE	Gulf	44 min
Apr 9, 4:31 AM EDT	Special Marine Warning	TAE		44 min
Apr 9, 4:44 AM EDT	Severe Thunderstorm Warning	TAE	Franklin, Gulf, Liberty	31 min
Apr 9, 5:55 AM EDT	Severe Thunderstorm Warning	TAE	Franklin	35 min
Apr 9, 6:22 AM EDT	Special Marine Warning	TAE		53 min
Apr 9, 6:31 AM EDT	Special Weather Statement	TAE	Franklin	44 min
Apr 9, 6:49 AM EDT	Severe Thunderstorm Warning	TAE	Bay, Calhoun, Jackson, Washington	56 min
Apr 9, 7:07 AM EDT	Special Marine Warning	TAE		113 min
Apr 9, 7:37 AM EDT	Special Weather Statement	TAE	Liberty	38 min
Apr 9, 7:43 AM EDT	Severe Thunderstorm Warning	TAE	Bay, Calhoun, Jackson	62 min
Apr 9, 7:48 AM EDT	Areal Flood Advisory	TAE	Bay, Gulf	3 hr
Apr 9, 7:59 AM EDT	Special Weather Statement	TAE	Walton	46 min
Apr 9, 8:16 AM EDT	Special Weather Statement	TAE	Holmes	44 min
Apr 9, 8:18 AM EDT	Special Weather Statement	TAE	Gulf	27 min
Apr 9, 8:34 AM EDT	Severe Thunderstorm Warning	TAE	Holmes, Jackson, Washington	43 min
Apr 9, 8:35 AM EDT	Severe Thunderstorm Warning	TAE	Jackson	55 min
Apr 9, 8:54 AM EDT	Special Marine Warning	TAE		2 hr
Apr 9, 9:31 AM EDT	Special Marine Warning	TAE		3 hr
Apr 9, 10:22 AM EDT	Flash Flood Warning	TAE	Bay, Walton	3 hr
Apr 9, 10:53 AM EDT	Special Marine Warning	TAE		3 hr
Apr 9, 11:27 AM EDT	Severe Thunderstorm Warning	TAE	Bay	48 min
Apr 9, 12:04 PM EDT	Severe Thunderstorm Warning	TAE	Bay, Gulf	41 min
Apr 9, 12:11 PM EDT	Flash Flood Warning	TAE	Bay, Gulf	2 hr
Apr 9, 12:27 PM EDT	Special Marine Warning	TAE		3 hr
Apr 9, 12:43 PM EDT	Special Weather Statement	TAE	Gulf	47 min
Apr 9, 12:56 PM EDT	Special Weather Statement	TAE	Bay, Calhoun, Jackson, Liberty, Washington	64 min
Apr 9, 1:39 PM EDT	Special Weather Statement	TAE	Liberty	51 min
Apr 9, 3:07 PM EDT	Small Craft Advisory	TAE		29 hr
Apr 9, 3:28 PM EDT	Special Marine Warning	TAE		2 hr
Apr 9, 5:42 PM EDT	Special Weather Statement	TAE	Bay, Calhoun, Gadsden, Gulf, Jefferson, Leon and 2 more	48 min
Apr 9, 6:25 PM EDT	Special Marine Warning	TAE		95 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.