Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 25, NWS Tallahassee, FL

February 15, 2021Dixie County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Feb 15, 2021, 6:40 PM EST for Dixie County, Florida. It was in force for 35 min. 2 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: Feb 15, 2021, 6:40 PM EST (23:40 UTC)
Expired: Feb 15, 2021, 7:15 PM EST
In force: 35 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

County Dixie County, FL

The radar

The Tallahassee radar (KTLH), 150 km from the middle of the area, began a volume at 23:39 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, 7:15 PM EST	TSTM WND DMG	Cross City, FL	THERE WERE A FEW REPORTS OF TREES BLOWN DOWN IN DIXIE COUNTY.
Feb 15, 7:15 PM EST	TSTM WND GST 44	Cross City Airport, FL	ASOS STATION KCTY CROSS CITY.

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, 11.7 hours before the alert went out and 148 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.

782 
WUUS52 KTAE 152340
SVRTAE
FLC029-160015-
/O.NEW.KTAE.SV.W.0025.210215T2340Z-210216T0015Z/

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

The National Weather Service in Tallahassee has issued a

* Severe Thunderstorm Warning for...
  Dixie County in Big Bend of Florida...

* Until 715 PM EST.

* At 640 PM EST, severe thunderstorms were located along a line
  extending from near Steinhatchee to 27 miles southwest of Horseshoe
  Point, moving northeast at 60 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...
  Cross City, Steinhatchee, Horseshoe Point, Suwannee, Horseshoe
  Beach, Tennille, Shamrock, Clara, Cross City Airport, Shired
  Island, Old Town, Guaranto Springs, Jena, Hines, Jonesboro, Eugene,
  Fletcher, Yellow Jacket and Fanning Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch 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 2929 8325 2936 8329 2946 8347 2952 8348
      2968 8343 2967 8336 2982 8332 2982 8291
      2976 8295 2970 8294 2963 8297 2958 8295
      2959 8294 2954 8298 2940 8302 2937 8307
      2934 8307 2930 8316 2929 8317
TIME...MOT...LOC 2340Z 222DEG 53KT 2969 8343 2912 8356 

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, 5:11 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, 6:56 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.