Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 26, NWS Tallahassee, FL

February 15, 2021Dixie County, Lafayette County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Feb 15, 2021, 7:07 PM EST for Dixie County, Lafayette County, Florida. It was in force for 38 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, 7:07 PM EST (00:07 UTC)
Expired: Feb 15, 2021, 7:45 PM EST
In force: 38 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Dixie County, FL, Lafayette County, FL

The radar

The Moody AFB radar (KVAX), 136 km from the middle of the area, began a volume at 00:10 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 00:00Z, 0.1 hours before the alert went out and 147 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: 590 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 75 m²/s²
0-3 km storm-relative helicity: 108 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

405 
WUUS52 KTAE 160007
SVRTAE
FLC029-067-160045-
/O.NEW.KTAE.SV.W.0026.210216T0007Z-210216T0045Z/

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

The National Weather Service in Tallahassee has issued a

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

* Until 745 PM EST.

* At 707 PM EST, severe thunderstorms were located along a line
  extending from 7 miles southeast of Mayo to 6 miles west of Fowlers
  Bluff, 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...
  Mayo, Cross City, Suwannee, Horseshoe Beach, Shamrock, Cross City
  Airport, Shired Island, Old Town, Guaranto Springs, Alton, Hines,
  Hatch Bend, Eugene, Fletcher, Yellow Jacket, San Pedro Junction,
  Fletcher Springs 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 8330 3006 8323 3011 8312
      2999 8296 2989 8292 2990 8290 2986 8288
      2981 8293 2972 8295 2972 8296 2970 8294
      2963 8297 2958 8295 2959 8294 2954 8298
      2940 8302 2932 8312
TIME...MOT...LOC 0007Z 230DEG 54KT 2997 8309 2939 8314 

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, 11:21 PM EST	River Flood Warning	TAE	Gadsden, Leon	9 days
Feb 15, 11:27 PM EST	Small Craft Advisory	TAE		8 hr

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.