Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 50, NWS Birmingham, AL

April 9, 2021Dallas County, Lowndes County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Apr 9, 2021, 1:55 PM CDT for Dallas County, Lowndes County, Alabama. It was in force for 65 min. 1 report 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, 1:55 PM CDT (18:55 UTC)
Expired: Apr 9, 2021, 3:00 PM CDT
In force: 65 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Dallas County, AL, Lowndes County, AL

The radar

The Birmingham radar (KBMX), 123 km from the middle of the area, began a volume at 18:54 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

Time	Report	Where	Remark
Apr 9, 2:15 PM CDT	TSTM WND DMG	5 Ese Crumptonia, AL	A FEW TREES WERE BLOWN DOWN IN THE VICINITY OF CR 73.

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

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, 6.9 hours before the alert went out and 124 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.

363 
WUUS54 KBMX 091855
SVRBMX
ALC047-085-092000-
/O.NEW.KBMX.SV.W.0050.210409T1855Z-210409T2000Z/

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

The National Weather Service in Birmingham has issued a

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

* Until 300 PM CDT.

* At 155 PM CDT, a severe thunderstorm was located over Dannelly
  Reservoir, or 11 miles northeast of Camden, moving east at 15 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Dallas Lake, Belknap, Dannelly Reservoir, Collirene, Tilden,
  Carlowville, Crumptonia, Minter, Farmersville and Fostoria.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3197 8686 3205 8686 3205 8718 3206 8718
      3207 8719 3208 8719 3210 8723 3212 8724
      3212 8726 3214 8725 3215 8728 3217 8729
      3216 8730 3218 8731 3227 8728 3225 8673
      3196 8675
TIME...MOT...LOC 1855Z 281DEG 13KT 3214 8720 

HAIL...1.00IN
WIND...60MPH
 
$$

56

1 follow-up statement

058 
WWUS54 KBMX 091925
SVSBMX

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

ALC047-085-092000-
/O.CON.KBMX.SV.W.0050.000000T0000Z-210409T2000Z/
Lowndes AL-Dallas AL-
225 PM CDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM CDT
FOR SOUTHWESTERN LOWNDES AND SOUTHEASTERN DALLAS COUNTIES...

At 225 PM CDT, a severe thunderstorm was located near Belknap, or 15
miles northeast of Camden, moving east at 15 mph.

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

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Belknap, Dannelly Reservoir, Collirene, Tilden, Carlowville, Minter,
Farmersville and Fostoria.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3197 8686 3205 8686 3205 8718 3206 8718
      3207 8719 3208 8719 3210 8723 3212 8724
      3212 8726 3214 8725 3215 8728 3217 8729
      3216 8730 3218 8731 3222 8720 3219 8674
      3196 8675
TIME...MOT...LOC 1925Z 281DEG 13KT 3212 8707 

HAIL...1.00IN
WIND...60MPH
 
$$

56

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, 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, 4:54 PM CDT	Severe Thunderstorm Warning	BMX	Greene	25 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.