Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 241, NWS Tallahassee, FL

September 1, 20214 counties in Alabama; Holmes County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Sep 1, 2021, 7:43 PM CDT for 4 counties in Alabama; Holmes County, Florida. It was in force for 47 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
Sep 1, 2021, 7:43 PM CDT (00:43 UTC)
Expired
Sep 1, 2021, 8:30 PM CDT
In force
47 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Coffee County, AL, Dale County, AL, Geneva County, AL, Houston County, AL, Holmes County, FL

The radar

The Ft Rucker radar (KEOX), 46 km from the middle of the area, began a volume at 00:46 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, 0.7 hours before the alert went out and 145 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 00:00Z on 2021-09-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1004 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 00:00Z on 2021-09-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 square meters per square second.1939Sfc1 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
1004 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
830 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
53 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

244 
WUUS52 KTAE 020043
SVRTAE
ALC031-045-061-069-FLC059-020130-
/O.NEW.KTAE.SV.W.0241.210902T0043Z-210902T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tallahassee FL
743 PM CDT Wed Sep 1 2021

The National Weather Service in Tallahassee has issued a

* Severe Thunderstorm Warning for...
  Southern Dale County in southeastern Alabama...
  Southeastern Coffee County in southeastern Alabama...
  Geneva County in southeastern Alabama...
  Central Houston County in southeastern Alabama...
  Northeastern Holmes County in the Panhandle of Florida...

* Until 830 PM CDT.

* At 743 PM CDT, severe thunderstorms were located along a line
  extending from near Newton to 6 miles east of Samson, moving
  southeast at 20 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Daleville, Dothan, Geneva, Fort Rucker, Hartford, Taylor, Midland
  City, Ashford, Slocomb, Cowarts, Newton, Webb, Pinckard, Malvern,
  Rehobeth, Clayhatchee, Grimes, Avon, Esto and Coffee Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3136 8562 3121 8518 3100 8547 3098 8553
      3095 8553 3079 8575 3079 8577 3116 8601
TIME...MOT...LOC 0043Z 300DEG 19KT 3129 8563 3112 8594 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

11-MM
1 follow-up statement
506 
WWUS52 KTAE 020122
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
822 PM CDT Wed Sep 1 2021

ALC031-045-061-069-FLC059-020132-
/O.EXP.KTAE.SV.W.0241.000000T0000Z-210902T0130Z/
Dale AL-Coffee AL-Geneva AL-Houston AL-Holmes FL-
822 PM CDT Wed Sep 1 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN DALE...SOUTHEASTERN
COFFEE...GENEVA...CENTRAL HOUSTON AND NORTHEASTERN HOLMES COUNTIES
WILL EXPIRE AT 830 PM CDT...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds and heavy rain are still possible with these thunderstorms.

LAT...LON 3136 8562 3121 8518 3100 8547 3098 8553
      3095 8553 3079 8575 3079 8577 3116 8601
TIME...MOT...LOC 0122Z 300DEG 19KT 3119 8543 3102 8574 

$$

11-MM

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 1, 7:18 PM CDTSpecial Weather StatementTAEGeneva57 min
Sep 1, 7:34 PM CDTSpecial Weather StatementTAEHouston41 min
Sep 1, 8:22 PM CDTSpecial Weather StatementTAEGeneva, Houston53 min
Sep 2, 9:04 AM CDTSpecial Marine WarningTAE40 min
Sep 2, 2:32 PM CDTSpecial Weather StatementTAEWashington28 min
Sep 2, 4:22 PM CDTSpecial Weather StatementTAEWalton23 min
Sep 2, 4:46 PM CDTSpecial Weather StatementTAEWalton29 min

Nearby

Severe Thunderstorm Warnings in Alabama, 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.