Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 55, NWS Birmingham, AL

April 9, 2021Greene County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Apr 9, 2021, 4:54 PM CDT for Greene County, Alabama. It was in force for 25 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, 4:54 PM CDT (21:54 UTC)
Expired: Apr 9, 2021, 5:19 PM CDT
In force: 25 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

County Greene County, AL

The radar

The Birmingham radar (KBMX), 107 km from the middle of the area, began a volume at 21:57 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, 12:54 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 9.9 hours before the alert went out and 107 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: 89 J/kg
Mixed-layer CIN: -208 J/kg
Mixed-layer LCL: 1321 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 141 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

944 
WUUS54 KBMX 092154
SVRBMX
ALC063-092245-
/O.NEW.KBMX.SV.W.0055.210409T2154Z-210409T2245Z/

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

The National Weather Service in Birmingham has issued a

* Severe Thunderstorm Warning for...
  Central Greene County in west central Alabama...

* Until 545 PM CDT.

* At 454 PM CDT, a severe thunderstorm was located over Allison, or 7
  miles southwest of Eutaw, moving north at 15 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* Locations impacted include...
  Eutaw, Boligee, Allison, Five Points Intersection, I 20 Rest Area
  Near Eutaw, Eutaw Municipal Airport and Clinton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3296 8800 3293 8777 3292 8777 3291 8776
      3290 8777 3290 8781 3288 8781 3286 8783
      3285 8782 3284 8783 3283 8782 3282 8782
      3277 8785 3277 8787 3276 8786 3269 8791
      3274 8809
TIME...MOT...LOC 2154Z 196DEG 12KT 3275 8797 

HAIL...1.50IN
WIND...60MPH
 
$$

87/GRANTHAM

1 follow-up statement

240 
WWUS54 KBMX 092219
SVSBMX

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

ALC063-092229-
/O.CAN.KBMX.SV.W.0055.000000T0000Z-210409T2245Z/
Greene AL-
519 PM CDT Fri Apr 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL GREENE 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.

A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
west central Alabama.

LAT...LON 3296 8800 3293 8777 3292 8777 3291 8776
      3290 8777 3290 8781 3288 8781 3286 8783
      3285 8782 3284 8783 3283 8782 3282 8782
      3277 8785 3277 8787 3276 8786 3269 8791
      3274 8809
TIME...MOT...LOC 2216Z 196DEG 12KT 3283 8794 

$$

87/GRANTHAM

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 8, 8:45 PM CDT	River Flood Warning	BMX	Greene, Pickens, Sumter	4 days
Apr 9, 6:09 AM CDT	Special Weather Statement	BMX	Bullock	51 min
Apr 9, 7:03 AM CDT	Severe Thunderstorm Warning	BMX	Marengo	28 min
Apr 9, 8:02 AM CDT	Special Weather Statement	BMX	Marengo	43 min
Apr 9, 8:06 AM CDT	Severe Thunderstorm Warning	BMX	Marengo	24 min
Apr 9, 8:22 AM CDT	Special Weather Statement	BMX	Barbour	38 min
Apr 9, 8:43 AM CDT	Special Weather Statement	BMX	Macon	32 min
Apr 9, 9:07 AM CDT	River Flood Warning	BMX	Greene, Marengo, Sumter	69 hr
Apr 9, 9:07 AM CDT	River Flood Warning	BMX	Greene, Hale, Marengo, Sumter	5 days
Apr 9, 9:14 AM CDT	River Flood Warning	BMX	Greene, Hale, Marengo	3 days
Apr 9, 9:40 AM CDT	Special Weather Statement	BMX	Elmore	50 min
Apr 9, 9:56 AM CDT	Severe Thunderstorm Warning	BMX	Autauga, Chilton, Coosa, Elmore	25 min
Apr 9, 10:21 AM CDT	Special Weather Statement	BMX	Elmore	39 min
Apr 9, 10:32 AM CDT	Severe Thunderstorm Warning	BMX	Elmore	18 min
Apr 9, 11:07 AM CDT	Special Weather Statement	BMX	Macon	38 min
Apr 9, 11:12 AM CDT	Severe Thunderstorm Warning	BMX	Lee, Macon	26 min
Apr 9, 12:00 PM CDT	Special Weather Statement	BMX	Talladega	45 min
Apr 9, 12:11 PM CDT	Special Weather Statement	BMX	Shelby	49 min
Apr 9, 12:46 PM CDT	Special Weather Statement	BMX	Walker, Winston	44 min
Apr 9, 12:49 PM CDT	Special Weather Statement	BMX	Dallas	41 min
Apr 9, 12:51 PM CDT	Severe Thunderstorm Warning	BMX	Walker, Winston	54 min
Apr 9, 1:14 PM CDT	Special Weather Statement	BMX	Talladega	46 min
Apr 9, 1:22 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Jefferson, Walker	36 min
Apr 9, 1:36 PM CDT	Severe Thunderstorm Warning	BMX	Walker, Winston	39 min
Apr 9, 1:40 PM CDT	Special Weather Statement	BMX	Autauga	35 min
Apr 9, 1:40 PM CDT	Special Weather Statement	BMX	Dallas	35 min
Apr 9, 1:52 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Jefferson, St. Clair	38 min
Apr 9, 1:55 PM CDT	Severe Thunderstorm Warning	BMX	Dallas, Lowndes	65 min
Apr 9, 2:05 PM CDT	Severe Thunderstorm Warning	BMX	Walker	55 min
Apr 9, 2:21 PM CDT	Severe Thunderstorm Warning	BMX	Lowndes	54 min
Apr 9, 2:31 PM CDT	Special Weather Statement	BMX	St. Clair	44 min
Apr 9, 2:39 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Jefferson, Walker	51 min
Apr 9, 3:21 PM CDT	Special Weather Statement	BMX	Pike	39 min
Apr 9, 4:04 PM CDT	Special Weather Statement	BMX	Hale	41 min
Apr 9, 4:13 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Hale, Marengo, Sumter	47 min
Apr 9, 4:34 PM CDT	Special Weather Statement	BMX	Shelby	41 min
Apr 9, 4:44 PM CDT	Special Weather Statement	BMX	Greene	31 min
Apr 9, 4:56 PM CDT	Special Weather Statement	BMX	Hale	34 min
Apr 9, 5:28 PM CDT	Special Weather Statement	BMX	Pickens	32 min
Apr 9, 5:37 PM CDT	Special Weather Statement	BMX	Hale	23 min
Apr 9, 5:41 PM CDT	Special Weather Statement	BMX	Tuscaloosa	34 min
Apr 9, 5:47 PM CDT	Severe Thunderstorm Warning	BMX	Pickens, Tuscaloosa	28 min
Apr 9, 5:52 PM CDT	Special Weather Statement	BMX	Greene	23 min
Apr 9, 5:58 PM CDT	Special Weather Statement	BMX	Pickens	32 min
Apr 9, 6:11 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Pickens, Tuscaloosa	37 min
Apr 9, 6:15 PM CDT	Severe Thunderstorm Warning	BMX	Pickens	23 min
Apr 9, 6:37 PM CDT	Special Weather Statement	BMX	Pickens	23 min
Apr 9, 6:53 PM CDT	Special Weather Statement	BMX	Pickens	37 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.