Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 128, NWS Birmingham, AL

June 14, 2021Lowndes County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 14, 2021, 6:40 PM CDT for Lowndes County, Alabama. It was in force for 18 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: Jun 14, 2021, 6:40 PM CDT (23:40 UTC)
Expired: Jun 14, 2021, 6:58 PM CDT
In force: 18 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Lowndes County, AL

The radar

The Maxwell AFB radar (KMXX), 107 km from the middle of the area, began a volume at 23:40 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

Birmingham, AL (KBMX), launched 12:00Z, 11.7 hours before the alert went out and 127 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: 1905 J/kg
Mixed-layer CIN: -56 J/kg
Mixed-layer LCL: 915 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: 10 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

586 
WUUS54 KBMX 142340
SVRBMX
ALC085-150030-
/O.NEW.KBMX.SV.W.0128.210614T2340Z-210615T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Birmingham AL
640 PM CDT Mon Jun 14 2021

The National Weather Service in Birmingham has issued a

* Severe Thunderstorm Warning for...
  Southwestern Lowndes County in south central Alabama...

* Until 730 PM CDT.

* At 639 PM CDT, a severe thunderstorm was located 7 miles southwest
  of Beechwood, or 9 miles south of Mosses, moving south at 10 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Clover Hill, Mount Willing and Fostoria. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3204 8686 3213 8681 3211 8659 3196 8662
      3196 8686
TIME...MOT...LOC 2339Z 016DEG 11KT 3204 8673 

HAIL...0.75IN
WIND...60MPH
 
$$

25/Owen

1 follow-up statement

894 
WWUS54 KBMX 142358
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
658 PM CDT Mon Jun 14 2021

ALC085-150007-
/O.CAN.KBMX.SV.W.0128.000000T0000Z-210615T0030Z/
Lowndes AL-
658 PM CDT Mon Jun 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN LOWNDES COUNTY IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.  However gusty winds are
still possible with this thunderstorm.

LAT...LON 3204 8686 3213 8681 3211 8659 3196 8662
      3196 8686
TIME...MOT...LOC 2355Z 016DEG 11KT 3198 8675 

$$

25/Owen

The office that day

Everything else NWS Birmingham, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 14, 3:48 AM CDT	Special Weather Statement	BMX	Jefferson	27 min
Jun 14, 4:04 AM CDT	Special Weather Statement	BMX	Calhoun	41 min
Jun 14, 1:14 PM CDT	Special Weather Statement	BMX	Chambers	31 min
Jun 14, 1:44 PM CDT	Special Weather Statement	BMX	Tallapoosa	46 min
Jun 14, 1:52 PM CDT	Special Weather Statement	BMX	Randolph	23 min
Jun 14, 2:13 PM CDT	Special Weather Statement	BMX	Tallapoosa	47 min
Jun 14, 3:01 PM CDT	Special Weather Statement	BMX	Elmore	44 min
Jun 14, 3:40 PM CDT	Special Weather Statement	BMX	Montgomery	50 min
Jun 14, 4:43 PM CDT	Special Weather Statement	BMX	Autauga	32 min
Jun 14, 5:10 PM CDT	Special Weather Statement	BMX	Lowndes	35 min
Jun 14, 5:46 PM CDT	Special Weather Statement	BMX	Autauga	29 min
Jun 14, 5:48 PM CDT	Special Weather Statement	BMX	Sumter	27 min
Jun 14, 5:59 PM CDT	Special Weather Statement	BMX	Autauga	31 min
Jun 14, 6:28 PM CDT	Special Weather Statement	BMX	Lowndes	47 min
Jun 14, 6:44 PM CDT	Special Weather Statement	BMX	Coosa	31 min

Nearby

Severe Thunderstorm Warnings in Alabama, 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.