Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 53, NWS Tallahassee, FL

April 9, 2021Geneva County, Houston County, Alabama

NWS Tallahassee, FL issued this severe thunderstorm warning at Apr 9, 2021, 7:57 AM CDT for Geneva County, Houston County, Alabama. It was in force for 63 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Apr 9, 2021, 7:57 AM CDT (12:57 UTC)
Expired
Apr 9, 2021, 9:00 AM CDT
In force
63 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Geneva County, AL, Houston County, AL

The radar

The Ft Rucker radar (KEOX), 42 km from the middle of the area, began a volume at 13:00 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.

What was reported inside it

TimeReportWhereRemark
Apr 9, 8:28 AM CDTHAIL 1.5Cottonwood, ALREPORT OF 1.5 INCH HAIL NEAR COTTONWOOD.
Apr 9, 8:37 AM CDTTSTM WND DMGAshford, ALA TREE WAS REPORTED DOWN NEAR ASHFORD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 1.0 hours before the alert went out and 120 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°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.

061 
WUUS52 KTAE 091257
SVRTAE
ALC061-069-091400-
/O.NEW.KTAE.SV.W.0053.210409T1257Z-210409T1400Z/

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

The National Weather Service in Tallahassee has issued a

* Severe Thunderstorm Warning for...
  Southeastern Geneva County in southeastern Alabama...
  Eastern Houston County in southeastern Alabama...

* Until 900 AM CDT.

* At 757 AM CDT, a severe thunderstorm was located over Graceville,
  moving northeast at 25 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* Locations impacted include...
  Cottonwood, Dothan, Ashford, Cowarts, Webb, Rehobeth, Avon, Madrid,
  Gordon, Memphis, Pansey, Grangeburg, Garretts Crossroads, Enon,
  Lovetown, Wilson Mill, Southern Junction, Sealy Springs, Barber and
  Olympia Spa Resort.

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 3114 8543 3127 8528 3120 8511 3119 8511
      3118 8510 3117 8510 3116 8509 3116 8508
      3115 8507 3100 8518 3100 8557
TIME...MOT...LOC 1257Z 225DEG 23KT 3096 8549 

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, 8:44 AM CDTSevere Thunderstorm WarningTAEHouston61 min

Nearby

Severe Thunderstorm Warnings in Alabama, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.