Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 35, NWS Huntsville, AL

April 24, 2021Cullman County, Morgan County, Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Apr 24, 2021, 4:06 PM CDT for Cullman County, Morgan County, Alabama. It was in force for 24 min. 5 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 24, 2021, 4:06 PM CDT (21:06 UTC)
Expired: Apr 24, 2021, 4:30 PM CDT
In force: 24 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Cullman County, AL, Morgan County, AL

The radar

The Northeast Alabama radar (KHTX), 95 km from the middle of the area, began a volume at 21:09 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 24, 4:14 PM CDT	HAIL 1.25	South Vinemont, AL	HAIL UP TO QUARTER SIZED FROM TWITTER PHOTO IN VINEMONT. TIME ESTIMATED BY RADAR.
Apr 24, 4:20 PM CDT	HAIL 1	Fairview, AL	PHOTO ON TWITTER SHOWED QUARTER-SIZE HAIL IN FAIRVIEW.
Apr 24, 4:21 PM CDT	HAIL 0.75	South Vinemont, AL	REPORT FROM MPING: DIME (0.75 IN.).
Apr 24, 4:30 PM CDT	HAIL 1	Eva, AL	QUARTER-SIZE HAIL REPORTED BY PUBLIC CALLER IN EVA.
Apr 24, 4:33 PM CDT	HAIL 1	3 Ne Baileyton, AL	REPORT FROM MPING: QUARTER (1.00 IN.).

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

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 9.1 hours before the alert went out and 123 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 580 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 855 m²/s²
0-3 km storm-relative helicity: 1103 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

723 
WUUS54 KHUN 242106
SVRHUN
ALC043-103-242130-
/O.NEW.KHUN.SV.W.0035.210424T2106Z-210424T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Huntsville AL
406 PM CDT Sat Apr 24 2021

The National Weather Service in Huntsville Alabama has issued a

* Severe Thunderstorm Warning for...
  Northern Cullman County in north central Alabama...
  Southern Morgan County in north central Alabama...

* Until 430 PM CDT.

* At 406 PM CDT, a severe thunderstorm was located near Sardis, or 11
  miles northwest of Cullman, moving east at 40 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...
  Cullman, Falkville, Baldwin, Vinemont, Baileyton, West Point, Eva,
  Hulaco, Cole Springs and Battleground.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3425 8711 3433 8711 3447 8659 3441 8657
      3431 8658 3430 8654 3423 8652 3422 8654
      3421 8655 3414 8708
TIME...MOT...LOC 2106Z 256DEG 36KT 3425 8702 

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

RSB

1 follow-up statement

693 
WWUS54 KHUN 242118
SVSHUN

Severe Weather Statement
National Weather Service Huntsville AL
418 PM CDT Sat Apr 24 2021

ALC043-103-242130-
/O.CON.KHUN.SV.W.0035.000000T0000Z-210424T2130Z/
Cullman AL-Morgan AL-
418 PM CDT Sat Apr 24 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT
FOR NORTHEASTERN CULLMAN AND SOUTHEASTERN MORGAN COUNTIES...

At 418 PM CDT, a severe thunderstorm was located near Cullman, moving
east at 50 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...
Cullman, Falkville, Vinemont, Baileyton, Eva, Lacon, Ryan Crossroads,
Joppa, Florette and Hulaco.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3416 8690 3436 8694 3445 8665 3447 8660
      3441 8657 3431 8658 3430 8654 3423 8652
      3422 8654 3421 8655
TIME...MOT...LOC 2118Z 260DEG 41KT 3427 8684 

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

RSB

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 24, 3:31 PM CDT	Special Weather Statement	HUN	Colbert	29 min
Apr 24, 3:52 PM CDT	Special Weather Statement	HUN	Morgan	23 min
Apr 24, 3:58 PM CDT	Special Weather Statement	HUN	Lawrence, Limestone	32 min
Apr 24, 4:01 PM CDT	Special Weather Statement	HUN	Morgan	29 min
Apr 24, 4:10 PM CDT	Severe Thunderstorm Warning	HUN	Lawrence, Limestone, Madison, Morgan	35 min
Apr 24, 4:28 PM CDT	Severe Thunderstorm Warning	HUN	Cullman, Marshall, Morgan	47 min
Apr 24, 4:33 PM CDT	Special Weather Statement	HUN	Madison	42 min
Apr 24, 4:39 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Limestone, Madison	38 min
Apr 24, 4:41 PM CDT	Special Weather Statement	HUN	Cullman	19 min
Apr 24, 4:48 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Madison, Marshall	27 min
Apr 24, 5:05 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb, Marshall	25 min
Apr 24, 5:07 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb, Jackson, Marshall	23 min
Apr 24, 5:18 PM CDT	Special Weather Statement	HUN	Jackson	42 min
Apr 24, 5:27 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb	18 min
Apr 24, 5:31 PM CDT	Special Weather Statement	HUN	DeKalb	29 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.