Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 36, NWS Tallahassee, FL

March 18, 2021Dixie County, Lafayette County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Mar 18, 2021, 1:44 PM EDT for Dixie County, Lafayette County, Florida. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Mar 18, 2021, 1:44 PM EDT (17:44 UTC)
Expired: Mar 18, 2021, 2:15 PM EDT
In force: 31 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Dixie County, FL, Lafayette County, FL

The radar

The Moody AFB radar (KVAX), 119 km from the middle of the area, began a volume at 17:45 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.

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 5.7 hours before the alert went out and 144 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: 162 J/kg
Mixed-layer CIN: -183 J/kg
Mixed-layer LCL: 888 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 183 m²/s²
0-3 km storm-relative helicity: 220 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

343 
WUUS52 KTAE 181744
SVRTAE
FLC029-067-181815-
/O.NEW.KTAE.SV.W.0036.210318T1744Z-210318T1815Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tallahassee FL
144 PM EDT Thu Mar 18 2021

The National Weather Service in Tallahassee has issued a

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

* Until 215 PM EDT.

* At 144 PM EDT, a severe thunderstorm was located 8 miles north of
  Cross City, moving northeast at 35 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Cross City, Shamrock, Hines, Cross City Airport, Grady, Hatch Bend,
  Eugene, Fletcher, Guaranto Springs and Fletcher Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2983 8289 2981 8293 2980 8292 2976 8295
      2972 8294 2972 8296 2970 8294 2970 8296
      2964 8296 2959 8315 2978 8330 3006 8305
      2999 8296 2996 8295 2996 8293 2989 8292
      2990 8290 2988 8288
TIME...MOT...LOC 1744Z 242DEG 31KT 2975 8316 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

1 follow-up statement

760 
WWUS52 KTAE 181802
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
202 PM EDT Thu Mar 18 2021

FLC029-067-181815-
/O.CON.KTAE.SV.W.0036.000000T0000Z-210318T1815Z/
Lafayette FL-Dixie FL-
202 PM EDT Thu Mar 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM EDT
FOR SOUTHEASTERN LAFAYETTE AND NORTHEASTERN DIXIE COUNTIES...

At 202 PM EDT, a severe thunderstorm was located 9 miles northwest of
Bell, moving northeast at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Cross City, Shamrock, Cross City Airport, Grady, Hatch Bend,
Fletcher, Guaranto Springs and Fletcher Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2983 8289 2981 8293 2980 8292 2976 8295
      2972 8294 2972 8296 2970 8294 2970 8296
      2967 8296 2962 8316 3006 8305 2999 8296
      2996 8295 2996 8293 2989 8292 2990 8290
      2988 8288
TIME...MOT...LOC 1802Z 242DEG 31KT 2983 8300 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 18, 4:18 AM EDT	Special Marine Warning	TAE		3 hr
Mar 18, 4:45 AM EDT	Special Weather Statement	TAE	Holmes, Walton	75 min
Mar 18, 5:29 AM EDT	Severe Thunderstorm Warning	TAE	Holmes, Walton, Washington	61 min
Mar 18, 6:40 AM EDT	Severe Thunderstorm Warning	TAE	Bay, Walton, Washington	64 min
Mar 18, 6:44 AM EDT	Special Marine Warning	TAE		3 hr
Mar 18, 7:02 AM EDT	Tornado Warning	TAE	Bay, Washington	28 min
Mar 18, 7:05 AM EDT	Tornado Warning	TAE	Bay, Calhoun, Gulf	40 min
Mar 18, 7:19 AM EDT	Severe Thunderstorm Warning	TAE	Bay, Calhoun, Franklin, Gulf, Holmes, Jackson and 2 more	86 min
Mar 18, 7:48 AM EDT	Tornado Warning	TAE	Bay, Gulf	27 min
Mar 18, 8:19 AM EDT	Severe Thunderstorm Warning	TAE	Calhoun, Franklin, Gadsden, Gulf, Leon, Liberty and 1 more	56 min
Mar 18, 8:24 AM EDT	Severe Thunderstorm Warning	TAE	Gadsden, Leon, Liberty	51 min
Mar 18, 9:08 AM EDT	Special Marine Warning	TAE		2 hr
Mar 18, 9:11 AM EDT	Severe Thunderstorm Warning	TAE	Franklin, Gadsden, Gulf, Jefferson, Leon, Liberty and 1 more	64 min
Mar 18, 10:07 AM EDT	Special Weather Statement	TAE	Jefferson, Wakulla	38 min
Mar 18, 10:52 AM EDT	Special Weather Statement	TAE	Jefferson, Madison	53 min
Mar 18, 11:04 AM EDT	Special Marine Warning	TAE		116 min
Mar 18, 11:49 AM EDT	Special Weather Statement	TAE	Taylor	41 min
Mar 18, 12:36 PM EDT	Special Weather Statement	TAE	Dixie, Lafayette	84 min
Mar 18, 12:55 PM EDT	Special Marine Warning	TAE		110 min
Mar 18, 1:21 PM EDT	Tornado Warning	TAE	Dixie, Lafayette, Taylor	24 min
Mar 18, 2:06 PM EDT	Special Weather Statement	TAE	Dixie	39 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.