Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 129, NWS Tallahassee, FL

May 12, 2021Coffee County, Geneva County, Alabama; Walton County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at May 12, 2021, 6:52 AM CDT for Coffee County, Geneva County, Alabama; Walton County, Florida. It was in force for 38 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: May 12, 2021, 6:52 AM CDT (11:52 UTC)
Expired: May 12, 2021, 7:30 AM CDT
In force: 38 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Coffee County, AL, Geneva County, AL, Walton County, FL

The radar

The Eglin Afb radar (KEVX), 60 km from the middle of the area, began a volume at 11:52 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 00:00Z, 11.9 hours before the alert went out and 191 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: 1708 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 617 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 83 m²/s²
0-3 km storm-relative helicity: 73 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

498 
WUUS52 KTAE 121152
SVRTAE
ALC031-061-FLC131-121230-
/O.NEW.KTAE.SV.W.0129.210512T1152Z-210512T1230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tallahassee FL
652 AM CDT Wed May 12 2021

The National Weather Service in Tallahassee has issued a

* Severe Thunderstorm Warning for...
  Southwestern Coffee County in southeastern Alabama...
  Western Geneva County in southeastern Alabama...
  Northwestern Walton County in the Panhandle of Florida...

* Until 730 AM CDT.

* At 652 AM CDT, severe thunderstorms were located along a line
  extending from 6 miles southeast of Heath to 6 miles north of
  Lockhart to Laurel Hill, moving east at 40 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Elba, Samson, New Brockton, Paxton, Kinston, Coffee Springs, Perry
  Store, Gaskin, Lytle, Lucile, Darlington, Marl, Ino, Turner
  Crossroads, Logan Field Municipal A/P, Clintonville, Goodman,
  Basin, Enterprise Municipal A/P and Caney Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3099 8639 3100 8619 3139 8620 3141 8589
      3113 8591 3099 8597 3099 8604 3089 8604
      3088 8639
TIME...MOT...LOC 1152Z 267DEG 35KT 3132 8638 3111 8635 3098 8643 

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

25-CAMP

The office that day

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

Issued	Product	Office	Counties	Lasted
May 12, 7:21 AM CDT	Severe Thunderstorm Warning	TAE	Geneva	54 min
May 12, 7:23 AM CDT	Special Weather Statement	TAE	Coffee, Dale	52 min
May 12, 8:08 AM CDT	Special Weather Statement	TAE	Dale, Henry	52 min
May 12, 8:15 AM CDT	Special Weather Statement	TAE	Houston	45 min
May 11, 7:54 PM CDT	Special Weather Statement	TAE	Jefferson	36 min
May 11, 8:30 PM CDT	Special Weather Statement	TAE	Jefferson, Madison	60 min
May 11, 9:58 PM CDT	Special Weather Statement	TAE	Lafayette	62 min
May 12, 6:30 AM CDT	Special Weather Statement	TAE	Walton	60 min
May 12, 6:58 AM CDT	Severe Thunderstorm Warning	TAE	Walton	47 min
May 12, 7:00 AM CDT	Special Marine Warning	TAE		60 min
May 12, 7:45 AM CDT	Severe Thunderstorm Warning	TAE	Walton	30 min
May 12, 8:48 AM CDT	Special Weather Statement	TAE	Calhoun, Jackson	42 min
May 12, 9:10 AM CDT	Special Marine Warning	TAE		65 min
May 12, 9:37 AM CDT	Special Weather Statement	TAE	Washington	38 min
May 12, 10:12 AM CDT	Special Marine Warning	TAE		33 min
May 12, 10:37 AM CDT	Special Weather Statement	TAE	Bay	53 min
May 12, 10:47 AM CDT	Special Marine Warning	TAE		58 min
May 12, 11:06 AM CDT	Special Weather Statement	TAE	Liberty	39 min
May 12, 11:27 AM CDT	Severe Thunderstorm Warning	TAE	Leon, Liberty, Wakulla	48 min
May 12, 12:06 PM CDT	Special Marine Warning	TAE		114 min
May 12, 12:07 PM CDT	Severe Thunderstorm Warning	TAE	Franklin, Liberty, Wakulla	38 min
May 12, 12:18 PM CDT	Special Weather Statement	TAE	Jefferson	42 min
May 12, 12:58 PM CDT	Special Weather Statement	TAE	Jefferson, Madison	47 min
May 12, 1:32 PM CDT	Special Weather Statement	TAE	Madison	28 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2021 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.