Alert archive / Georgia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 52, NWS Tallahassee, FL

April 9, 2021Decatur County, Seminole County, Georgia; Jackson County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Apr 9, 2021, 8:35 AM EDT for Decatur County, Seminole County, Georgia; Jackson County, Florida. It was in force for 55 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
Apr 9, 2021, 8:35 AM EDT (12:35 UTC)
Expired
Apr 9, 2021, 9:30 AM EDT
In force
55 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Jackson County, FL, Decatur County, GA, Seminole County, GA

The radar

The Tallahassee radar (KTLH), 65 km from the middle of the area, began a volume at 12:35 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, 0.6 hours before the alert went out and 67 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-pSkew-T log-p diagram, Tallahassee Rgnl, FL at 12:00Z on 2021-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1133 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 12:00Z on 2021-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1133 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
692 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
59 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.5

Open this sounding in Storm Lab

The text

As transmitted.

910 
WUUS52 KTAE 091235
SVRTAE
FLC063-GAC087-253-091330-
/O.NEW.KTAE.SV.W.0052.210409T1235Z-210409T1330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tallahassee FL
835 AM EDT Fri Apr 9 2021

The National Weather Service in Tallahassee has issued a

* Severe Thunderstorm Warning for...
  Southeastern Jackson County in the Panhandle of Florida...
  Southwestern Decatur County in southwestern Georgia...
  Central Seminole County in southwestern Georgia...

* Until 930 AM EDT/830 AM CDT/.

* At 835 AM EDT/735 AM CDT/, a severe thunderstorm was located 13
  miles southeast of Marianna, moving northeast at 30 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* Locations impacted include...
  Chattahoochee, Sneads, Grand Ridge, Seminole State Park, Desser,
  Reynoldsville, Lela, Union City, Haynes, Sink Creek, Drakes Still,
  Star, Simsville, Cypress, Alliance, Fairchild and Lake Seminole.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Tallahassee.

&&

LAT...LON 3089 8461 3074 8481 3071 8486 3070 8486
      3062 8491 3061 8493 3061 8514 3066 8520
      3100 8487
TIME...MOT...LOC 1235Z 225DEG 25KT 3065 8507 

HAIL...1.00IN
WIND...<50MPH
 
$$

42-DVD
1 follow-up statement
103 
WWUS52 KTAE 091302
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
902 AM EDT Fri Apr 9 2021

FLC063-091311-
/O.CAN.KTAE.SV.W.0052.000000T0000Z-210409T1330Z/
Jackson FL-
902 AM EDT Fri Apr 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN JACKSON COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area.  Therefore, the warning has been cancelled.

LAT...LON 3089 8461 3074 8481 3071 8486 3075 8490
      3075 8491 3078 8492 3082 8494 3083 8494
      3084 8493 3087 8494 3088 8493 3091 8496
      3100 8487
TIME...MOT...LOC 1301Z 228DEG 26KT 3077 8486 

$$

GAC087-253-091330-
/O.CON.KTAE.SV.W.0052.000000T0000Z-210409T1330Z/
Decatur GA-Seminole GA-
902 AM EDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 AM EDT
FOR SOUTHWESTERN DECATUR AND CENTRAL SEMINOLE COUNTIES...

At 901 AM EDT, a severe thunderstorm was located near Chattahoochee,
or 18 miles south of Donalsonville, moving northeast at 30 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Seminole State Park, Desser, Drakes Still, Reynoldsville, Lela,
Fairchild and Lake Seminole.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Tallahassee.

&&

LAT...LON 3089 8461 3074 8481 3071 8486 3075 8490
      3075 8491 3078 8492 3082 8494 3083 8494
      3084 8493 3087 8494 3088 8493 3091 8496
      3100 8487
TIME...MOT...LOC 1301Z 228DEG 26KT 3077 8486 

HAIL...1.00IN
WIND...<50MPH
 
$$

42-DVD

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 9, 9:09 AM EDTSpecial Weather StatementTAERandolph51 min
Apr 9, 9:20 AM EDTSpecial Weather StatementTAEDecatur40 min
Apr 9, 9:38 AM EDTSpecial Weather StatementTAETerrell52 min
Apr 9, 9:44 AM EDTSevere Thunderstorm WarningTAEEarly, Miller61 min
Apr 9, 12:56 PM EDTSpecial Weather StatementTAESeminole64 min
Apr 9, 2:48 AM EDTSpecial Marine WarningTAE57 min
Apr 9, 4:16 AM EDTSpecial Weather StatementTAEGulf44 min
Apr 9, 4:31 AM EDTSpecial Marine WarningTAE44 min
Apr 9, 4:44 AM EDTSevere Thunderstorm WarningTAEFranklin, Gulf, Liberty31 min
Apr 9, 5:15 AM EDTSevere Thunderstorm WarningTAEFranklin, Gulf45 min
Apr 9, 5:55 AM EDTSevere Thunderstorm WarningTAEFranklin35 min
Apr 9, 6:22 AM EDTSpecial Marine WarningTAE53 min
Apr 9, 6:31 AM EDTSpecial Weather StatementTAEFranklin44 min
Apr 9, 6:49 AM EDTSevere Thunderstorm WarningTAEBay, Calhoun, Jackson, Washington56 min
Apr 9, 7:07 AM EDTSpecial Marine WarningTAE113 min
Apr 9, 7:37 AM EDTSpecial Weather StatementTAELiberty38 min
Apr 9, 7:43 AM EDTSevere Thunderstorm WarningTAEBay, Calhoun, Jackson62 min
Apr 9, 7:48 AM EDTAreal Flood AdvisoryTAEBay, Gulf3 hr
Apr 9, 7:59 AM EDTSpecial Weather StatementTAEWalton46 min
Apr 9, 8:16 AM EDTSpecial Weather StatementTAEHolmes44 min
Apr 9, 8:18 AM EDTSpecial Weather StatementTAEGulf27 min
Apr 9, 8:34 AM EDTSevere Thunderstorm WarningTAEHolmes, Jackson, Washington43 min
Apr 9, 8:54 AM EDTSpecial Marine WarningTAE2 hr
Apr 9, 9:31 AM EDTSpecial Marine WarningTAE3 hr
Apr 9, 10:22 AM EDTFlash Flood WarningTAEBay, Walton3 hr
Apr 9, 10:53 AM EDTSpecial Marine WarningTAE3 hr
Apr 9, 11:27 AM EDTSevere Thunderstorm WarningTAEBay48 min
Apr 9, 12:04 PM EDTSevere Thunderstorm WarningTAEBay, Gulf41 min
Apr 9, 12:11 PM EDTFlash Flood WarningTAEBay, Gulf2 hr
Apr 9, 12:27 PM EDTSpecial Marine WarningTAE3 hr
Apr 9, 12:43 PM EDTSpecial Weather StatementTAEGulf47 min
Apr 9, 1:39 PM EDTSpecial Weather StatementTAELiberty51 min
Apr 9, 3:07 PM EDTSmall Craft AdvisoryTAE29 hr
Apr 9, 3:28 PM EDTSpecial Marine WarningTAE2 hr
Apr 9, 5:42 PM EDTSpecial Weather StatementTAEBay, Calhoun, Gadsden, Gulf, Jefferson, Leon and 2 more48 min
Apr 9, 6:25 PM EDTSpecial Marine WarningTAE95 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2021Severe Thunderstorm Warnings in Florida, 2021Every 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.