Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 1, NWS Tallahassee, FL

January 27, 2021Jackson County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Jan 27, 2021, 7:05 AM CST for Jackson County, Florida. It was in force for 25 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: Jan 27, 2021, 7:05 AM CST (13:05 UTC)
Expired: Jan 27, 2021, 7:30 AM CST
In force: 25 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

County Jackson County, FL

The radar

The Eglin Afb radar (KEVX), 60 km from the middle of the area, began a volume at 13:07 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

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 1.1 hours before the alert went out and 118 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: 128 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 548 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 183 m²/s²
0-3 km storm-relative helicity: 308 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

As transmitted.

787 
WUUS52 KTAE 271305
SVRTAE
FLC063-271330-
/O.NEW.KTAE.SV.W.0001.210127T1305Z-210127T1330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tallahassee FL
705 AM CST Wed Jan 27 2021

The National Weather Service in Tallahassee has issued a

* Severe Thunderstorm Warning for...
  Northwestern Jackson County in the Panhandle of Florida...

* Until 730 AM CST.

* At 704 AM CST, a severe thunderstorm was located near Graceville,
  moving east at 30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Greenwood, Jacobs, Jacob City, Chipola Terrace, Marianna Municipal
  A/P and Sills.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3090 8551 3100 8519 3081 8516 3081 8548
      3083 8548 3083 8549
TIME...MOT...LOC 1304Z 257DEG 28KT 3087 8545 

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

11-MM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 26, 6:27 PM CST	Areal Flood Advisory	TAE	Franklin, Gulf	3 hr
Jan 26, 6:33 PM CST	Special Marine Warning	TAE		87 min
Jan 26, 8:34 PM CST	Marine Dense Fog Advisory	TAE		15 hr
Jan 27, 12:50 AM CST	Small Craft Advisory	TAE		38 hr
Jan 27, 7:26 AM CST	Severe Thunderstorm Warning	TAE	Jackson	34 min
Jan 27, 7:38 AM CST	Tornado Warning	TAE	Jackson	37 min
Jan 27, 7:46 AM CST	Special Weather Statement	TAE	Calhoun	44 min
Jan 27, 8:16 AM CST	Special Weather Statement	TAE	Bay, Washington	44 min
Jan 27, 8:27 AM CST	Special Weather Statement	TAE	Calhoun	63 min
Jan 27, 8:32 AM CST	Severe Thunderstorm Warning	TAE	Calhoun, Gadsden, Jackson, Liberty	43 min
Jan 27, 9:10 AM CST	Special Marine Warning	TAE		3 hr
Jan 27, 9:18 AM CST	Severe Thunderstorm Warning	TAE	Gadsden	42 min
Jan 27, 9:54 AM CST	Special Weather Statement	TAE	Gadsden, Leon	66 min
Jan 27, 9:59 AM CST	Severe Thunderstorm Warning	TAE	Gadsden, Leon, Liberty	46 min
Jan 27, 10:11 AM CST	Special Weather Statement	TAE	Franklin, Gulf, Liberty, Wakulla	49 min
Jan 27, 10:20 AM CST	Tornado Warning	TAE	Gadsden, Leon	25 min
Jan 27, 10:34 AM CST	Tornado Warning	TAE	Gadsden, Jefferson, Leon	26 min
Jan 27, 10:50 AM CST	Tornado Warning Tornado observed	TAE	Jefferson, Leon	40 min
Jan 27, 11:14 AM CST	Special Weather Statement	TAE	Franklin, Liberty	46 min
Jan 27, 11:21 AM CST	Tornado Warning	TAE	Jefferson, Madison, Taylor	39 min
Jan 27, 11:41 AM CST	Special Marine Warning	TAE		3 hr
Jan 27, 11:55 AM CST	Severe Thunderstorm Warning	TAE	Madison	50 min
Jan 27, 1:23 PM CST	Special Weather Statement	TAE	Dixie, Lafayette	82 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.