Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 59, NWS Birmingham, AL

April 9, 2021Lamar County, Marion County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Apr 9, 2021, 9:25 PM CDT for Lamar County, Marion County, Alabama. It was in force for 50 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, 9:25 PM CDT (02:25 UTC)
Expired: Apr 9, 2021, 10:15 PM CDT
In force: 50 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Lamar County, AL, Marion County, AL

The radar

The Columbus AFB radar (KGWX), 31 km from the middle of the area, began a volume at 02:28 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 9, 9:15 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 2.4 hours before the alert went out and 153 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: 53 J/kg
Mixed-layer CIN: -225 J/kg
Mixed-layer LCL: 744 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 182 m²/s²
0-3 km storm-relative helicity: 294 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

As transmitted.

243 
WUUS54 KBMX 100225
SVRBMX
ALC075-093-100315-
/O.NEW.KBMX.SV.W.0059.210410T0225Z-210410T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Birmingham AL
925 PM CDT Fri Apr 9 2021

The National Weather Service in Birmingham has issued a

* Severe Thunderstorm Warning for...
  Western Marion County in northwestern Alabama...
  Northern Lamar County in west central Alabama...

* Until 1015 PM CDT.

* At 925 PM CDT, severe thunderstorms were located along a line
  extending from near Fulton to 8 miles northwest of Bedford, moving
  east at 40 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Hamilton, Sulligent, Detroit, Beaverton, Lamar County Airport,
  Weston, Crews, Bedford, Henson Springs, Shottsville, Rankin Fite
  Airport, Byrd, Pine Springs, Bexar, Marion County Public Lake and
  Pikeville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3432 8818 3431 8794 3392 8794 3392 8795
      3382 8795 3378 8824
TIME...MOT...LOC 0225Z 262DEG 36KT 3426 8848 3388 8830 

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

87/GRANTHAM

3 follow-up statements

794 
WWUS54 KBMX 100241
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
941 PM CDT Fri Apr 9 2021

ALC075-093-100315-
/O.CON.KBMX.SV.W.0059.000000T0000Z-210410T0315Z/
Marion AL-Lamar AL-
941 PM CDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR WESTERN MARION AND NORTHERN LAMAR COUNTIES...

At 941 PM CDT, severe thunderstorms were located along a line
extending from near Tremont to 6 miles east of Detroit to near Lamar
County Airport, moving east at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Hamilton, Sulligent, Detroit, Beaverton, Lamar County Airport,
Weston, Crews, Bedford, Henson Springs, Shottsville, Rankin Fite
Airport, Byrd, Pine Springs, Bexar, Marion County Public Lake and
Pikeville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3432 8818 3431 8794 3392 8794 3392 8795
      3382 8795 3378 8824
TIME...MOT...LOC 0241Z 271DEG 40KT 3427 8829 3405 8806 3382 8815 

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

87/GRANTHAM

049 
WWUS54 KBMX 100255
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
955 PM CDT Fri Apr 9 2021

ALC075-093-100315-
/O.CON.KBMX.SV.W.0059.000000T0000Z-210410T0315Z/
Marion AL-Lamar AL-
955 PM CDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR WESTERN MARION AND NORTHERN LAMAR COUNTIES...

At 955 PM CDT, severe thunderstorms were located along a line
extending from 8 miles northeast of Tremont to 6 miles northwest of
Guin to near Blooming Grove, moving east at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Hamilton, Sulligent, Beaverton, Lamar County Airport, Weston, Crews,
Henson Springs, Shottsville, Rankin Fite Airport, Byrd, Pine Springs,
Bexar, Marion County Public Lake and Pikeville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3378 8821 3401 8813 3425 8819 3432 8818
      3431 8794 3392 8794 3392 8795 3382 8795
TIME...MOT...LOC 0255Z 268DEG 29KT 3430 8812 3404 8798 3384 8802 

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

87/GRANTHAM

790 
WWUS54 KBMX 100307
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
1007 PM CDT Fri Apr 9 2021

ALC075-093-100317-
/O.EXP.KBMX.SV.W.0059.000000T0000Z-210410T0315Z/
Marion AL-Lamar AL-
1007 PM CDT Fri Apr 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN MARION AND NORTHERN
LAMAR COUNTIES WILL EXPIRE AT 1015 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.

A Severe Thunderstorm Watch remains in effect until 400 AM CDT for
northwestern and west central Alabama.

LAT...LON 3378 8821 3401 8813 3425 8819 3432 8818
      3431 8794 3392 8794 3392 8795 3382 8795
TIME...MOT...LOC 0307Z 262DEG 36KT 3431 8800 3405 8786 3385 8790 

$$

25/Owen

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 7:18 PM CDT	Special Weather Statement	BMX	Lamar	27 min
Apr 9, 9:58 PM CDT	Special Weather Statement	BMX	Lamar	32 min
Apr 9, 10:36 PM CDT	Special Weather Statement	BMX	Pickens	39 min
Apr 9, 10:57 PM CDT	Special Weather Statement	BMX	Greene	63 min
Apr 10, 12:02 AM CDT	Special Weather Statement	BMX	Greene, Sumter	43 min
Apr 10, 12:19 AM CDT	Areal Flood Advisory	BMX	Greene	3 hr
Apr 10, 1:43 AM CDT	Areal Flood Advisory	BMX	Greene, Hale, Sumter	3 hr
Apr 10, 2:01 AM CDT	Special Weather Statement	BMX	Marengo	59 min
Apr 10, 3:03 AM CDT	Special Weather Statement	BMX	Dallas	57 min
Apr 10, 4:51 AM CDT	Special Weather Statement	BMX	Pike	54 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.