Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 14, NWS Tallahassee, FL

February 15, 2021Lafayette County, Madison County, Taylor County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Feb 15, 2021, 2:43 PM EST for Lafayette County, Madison County, Taylor County, Florida. It was in force for 62 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: Feb 15, 2021, 2:43 PM EST (19:43 UTC)
Expired: Feb 15, 2021, 3:45 PM EST
In force: 62 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Lafayette County, FL, Madison County, FL, Taylor County, FL

The radar

The Tallahassee radar (KTLH), 107 km from the middle of the area, began a volume at 19:45 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, 3:30 PM EST	TSTM WND DMG	Hopewell, FL	THREE OUTAGES RELATED TO TREE DEBRIS ON POWER LINES IN THE TAYLOR AND MADISON COUNTY AREAS.

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 12:00Z, 7.7 hours before the alert went out and 105 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.

288 
WUUS52 KTAE 151943
SVRTAE
FLC067-079-123-152045-
/O.NEW.KTAE.SV.W.0014.210215T1943Z-210215T2045Z/

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

The National Weather Service in Tallahassee has issued a

* Severe Thunderstorm Warning for...
  Lafayette County in Big Bend of Florida...
  Taylor County in Big Bend of Florida...
  Southern Madison County in Big Bend of Florida...

* Until 345 PM EST.

* At 243 PM EST, a severe thunderstorm was located 17 miles west of
  Steinhatchee, moving north at 55 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...
  Mayo, Perry, Steinhatchee, Greenville, Pinland, Jug Island, Ebb,
  Buckville, Dekle Beach, Jack Lee Island, Foley, Salem, Perry-Foley
  Airport, San Pedro Junction, Hampton Springs, Sirmans, Shady Grove,
  Cedar Island, Fish Creek and Cooks Hammock.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2982 8325 2982 8332 2969 8335 2966 8337
      2967 8341 2966 8340 2962 8340 2953 8348
      2960 8349 2969 8363 2986 8373 2991 8382
      3050 8363 3034 8321 3025 8325 3011 8323
      3010 8318 3010 8312 3006 8306
TIME...MOT...LOC 1943Z 200DEG 46KT 2977 8366 

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, 2:11 AM EST	Rip Current Statement	TAE	Bay, Franklin, Gulf, Walton	41 hr
Feb 15, 2:16 AM EST	Small Craft Advisory	TAE		29 hr
Feb 15, 1:35 PM EST	Special Marine Warning	TAE		3 hr
Feb 15, 1:53 PM EST	Severe Thunderstorm Warning	TAE	Walton	67 min
Feb 15, 2:12 PM EST	Special Marine Warning	TAE		3 hr
Feb 15, 2:36 PM EST	Severe Thunderstorm Warning	TAE	Bay, Holmes, Jackson, Walton, Washington	54 min
Feb 15, 2:39 PM EST	Wind Chill Advisory	TAE	Holmes, Walton	20 hr
Feb 15, 3:02 PM EST	Tornado Warning	TAE	Bay, Walton, Washington	28 min
Feb 15, 3:22 PM EST	Severe Thunderstorm Warning	TAE	Bay, Calhoun, Gulf, Holmes, Jackson, Liberty and 1 more	53 min
Feb 15, 3:24 PM EST	Severe Thunderstorm Warning	TAE	Madison	55 min
Feb 15, 3:39 PM EST	Tornado Warning	TAE	Lafayette	21 min
Feb 15, 3:41 PM EST	Tornado Warning	TAE	Bay, Jackson, Washington	12 min
Feb 15, 4:03 PM EST	Severe Thunderstorm Warning	TAE	Calhoun, Gadsden, Jackson, Leon, Liberty, Wakulla	57 min
Feb 15, 4:25 PM EST	Special Marine Warning	TAE		2 hr
Feb 15, 5:11 PM EST	Severe Thunderstorm Warning	TAE	Jefferson, Madison, Taylor	64 min
Feb 15, 5:53 PM EST	Severe Thunderstorm Warning	TAE	Lafayette, Madison, Taylor	26 min
Feb 15, 6:22 PM EST	Special Marine Warning	TAE		38 min
Feb 15, 6:40 PM EST	Severe Thunderstorm Warning	TAE	Dixie	35 min
Feb 15, 6:56 PM EST	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.