Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 28, NWS Huntsville, AL

March 28, 2021Cullman County, Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Mar 28, 2021, 5:30 AM CDT for Cullman County, Alabama. It was in force for 30 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: Mar 28, 2021, 5:30 AM CDT (10:30 UTC)
Expired: Mar 28, 2021, 6:00 AM CDT
In force: 30 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

County Cullman County, AL

The radar

The Northeast Alabama radar (KHTX), 98 km from the middle of the area, began a volume at 10:33 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
Mar 28, 5:33 AM CDT	TSTM WND DMG	3 Ene Cullman, AL	* 1 INJ * MOBILE HOME WAS BLOWN OFF OF ITS FOUNDATION. A PERSON INSIDE SUFFERED MINOR INJURIES. TIME ESTIMATED FROM RADAR. OTHER TREES WERE DOWNED NE OF CULLMAN TOWARDS THE COMMUNITY OF FAIRVIEW.

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
Mar 27, 11:27 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 10.5 hours before the alert went out and 112 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: 643 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 1359 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 126 m²/s²
0-3 km storm-relative helicity: 152 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 3.7

Open this sounding in Storm Lab

The text

As transmitted.

272 
WUUS54 KHUN 281030
SVRHUN
ALC043-281100-
/O.NEW.KHUN.SV.W.0028.210328T1030Z-210328T1100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Huntsville AL
530 AM CDT Sun Mar 28 2021

The National Weather Service in Huntsville Alabama has issued a

* Severe Thunderstorm Warning for...
  Northeastern Cullman County in north central Alabama...

* Until 600 AM CDT.

* At 529 AM CDT, a severe thunderstorm was located over Good Hope, or
  near Cullman, moving east at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Cullman, Hanceville, Good Hope, Holly Pond, Dodge City, Baldwin,
  Vinemont, Baileyton, Phelan and Walter.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 600 AM CDT for north central
and northeastern Alabama.

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

&&

LAT...LON 3421 8699 3431 8664 3430 8648 3429 8646
      3426 8645 3425 8652 3423 8652 3420 8655
      3419 8655 3415 8659 3412 8660 3412 8663
      3409 8666 3408 8669 3407 8670 3404 8695
TIME...MOT...LOC 1029Z 256DEG 39KT 3415 8689 

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

Barron

1 follow-up statement

044 
WWUS54 KHUN 281040
SVSHUN

Severe Weather Statement
National Weather Service Huntsville AL
540 AM CDT Sun Mar 28 2021

ALC043-281100-
/O.CON.KHUN.SV.W.0028.000000T0000Z-210328T1100Z/
Cullman AL-
540 AM CDT Sun Mar 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 AM CDT
FOR NORTHEASTERN CULLMAN COUNTY...

At 539 AM CDT, a severe thunderstorm was located near Cullman, moving
east at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Cullman, Hanceville, Holly Pond, Baileyton, Phelan, Walter and Joppa.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 600 AM CDT for north central
and northeastern Alabama.

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

&&

LAT...LON 3425 8685 3431 8664 3430 8648 3429 8646
      3426 8645 3425 8652 3423 8652 3420 8655
      3419 8655 3415 8659 3412 8660 3412 8663
      3409 8666 3408 8669 3407 8670 3406 8682
TIME...MOT...LOC 1039Z 256DEG 39KT 3418 8675 

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

Barron

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 28, 12:31 AM CDT	Severe Thunderstorm Warning	HUN	Colbert, Lauderdale	44 min
Mar 28, 1:13 AM CDT	Special Weather Statement	HUN	Lauderdale	47 min
Mar 28, 1:52 AM CDT	Flash Flood Warning	HUN	Lauderdale	3 hr
Mar 28, 2:39 AM CDT	Special Weather Statement	HUN	Colbert	51 min
Mar 28, 2:45 AM CDT	Special Weather Statement	HUN	Franklin	45 min
Mar 28, 3:09 AM CDT	Severe Thunderstorm Warning	HUN	Colbert, Franklin, Lawrence	36 min
Mar 28, 3:34 AM CDT	Severe Thunderstorm Warning	HUN	Lawrence, Limestone, Morgan	26 min
Mar 28, 3:58 AM CDT	Severe Thunderstorm Warning	HUN	Jackson, Limestone, Madison, Morgan	47 min
Mar 28, 4:26 AM CDT	Severe Thunderstorm Warning	HUN	Jackson	34 min
Mar 28, 4:46 AM CDT	Severe Thunderstorm Warning	HUN	Jackson, Limestone, Madison, Morgan	44 min
Mar 28, 5:02 AM CDT	Severe Thunderstorm Warning	HUN	Cullman	28 min
Mar 28, 5:21 AM CDT	Severe Thunderstorm Warning	HUN	Jackson	24 min
Mar 28, 5:41 AM CDT	Areal Flood Warning	HUN	Madison	3 hr
Mar 28, 5:57 AM CDT	Severe Thunderstorm Warning	HUN	DeKalb, Marshall	33 min
Mar 28, 6:26 AM CDT	Special Weather Statement	HUN	DeKalb	34 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.