Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 23, NWS Tallahassee, FL

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

NWS Tallahassee, FL issued this severe thunderstorm warning at Feb 15, 2021, 5:11 PM EST for Jefferson County, Madison County, Taylor County, Florida. It was in force for 64 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, 5:11 PM EST (22:11 UTC)
Expired: Feb 15, 2021, 6:15 PM EST
In force: 64 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Jefferson County, FL, Madison County, FL, Taylor County, FL

The radar

The Tallahassee radar (KTLH), 48 km from the middle of the area, began a volume at 22:14 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, 5:42 PM EST	TSTM WND DMG	3 Ese Alma, FL	CORRECTS TIME OF PREVIOUS TSTM WND DMG REPORT FROM 3 ESE ALMA. TREES AND POWER LINES DOWN AT BOSTON HIGHWAY AND STILL RD.

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, 3:02 PM EST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 10.2 hours before the alert went out and 45 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.

825 
WUUS52 KTAE 152211
SVRTAE
FLC065-079-123-152315-
/O.NEW.KTAE.SV.W.0023.210215T2211Z-210215T2315Z/

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

The National Weather Service in Tallahassee has issued a

* Severe Thunderstorm Warning for...
  Western Taylor County in Big Bend of Florida...
  Jefferson County in Big Bend of Florida...
  Western Madison County in Big Bend of Florida...

* Until 615 PM EST.

* At 510 PM EST, severe thunderstorms were located along a line
  extending from 10 miles east of St. Marks to 37 miles west of
  Steinhatchee, moving northeast at 70 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...
  Monticello, Perry, Greenville, Alma, Jug Island, Drifton, Scanlon,
  Lovett, Foley, Perry-Foley Airport, Hampton Springs, Lake
  Miccosukee, Iddo, Moseley Hall, Festus, Secotan, Boyd, Aucilla,
  Lois and Adams Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 700 PM EST for Big Bend of
Florida. A Tornado Watch also remains in effect until 1000 PM EST for
Big Bend of Florida.

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

&&

LAT...LON 2987 8375 3003 8405 3002 8409 3010 8410
      3009 8408 3021 8408 3052 8401 3052 8398
      3058 8400 3067 8398 3064 8344 2978 8357
      2974 8366
TIME...MOT...LOC 2210Z 203DEG 62KT 3018 8403 2970 8401 

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, 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, 2:43 PM EST	Severe Thunderstorm Warning	TAE	Lafayette, Madison, Taylor	62 min
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, 5:53 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.