Alert archive / Alabama / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 41, NWS Huntsville, AL
NWS Huntsville, AL issued this severe thunderstorm warning at Apr 24, 2021, 5:07 PM CDT for DeKalb County, Jackson County, Marshall County, Alabama. It was in force for 23 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 24, 2021, 5:07 PM CDT (22:07 UTC)
- Expired
- Apr 24, 2021, 5:30 PM CDT
- In force
- 23 min
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
Counties DeKalb County, AL, Jackson County, AL, Marshall County, AL
The radar
The Northeast Alabama radar (KHTX), 36 km from the middle of the area, began a volume at 22:07 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 24, 4:52 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 10.1 hours before the alert went out and 173 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.
- 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
The text
As transmitted.
609
WUUS54 KHUN 242207
SVRHUN
ALC049-071-095-242230-
/O.NEW.KHUN.SV.W.0041.210424T2207Z-210424T2230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Huntsville AL
507 PM CDT Sat Apr 24 2021
The National Weather Service in Huntsville Alabama has issued a
* Severe Thunderstorm Warning for...
Southern Jackson County in northeastern Alabama...
Northeastern Marshall County in northeastern Alabama...
Central DeKalb County in northeastern Alabama...
* Until 530 PM CDT.
* At 507 PM CDT, a severe thunderstorm was located near Woodville, or
10 miles southwest of Scottsboro, moving east at 50 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Scottsboro, Fort Payne, Rainsville, Henagar, Sylvania, Hollywood,
Powell, Grant, Section and Woodville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3451 8628 3469 8631 3480 8567 3453 8563
TIME...MOT...LOC 2207Z 262DEG 44KT 3461 8621
HAIL...1.25IN
WIND...60MPH
$$
RSB2 follow-up statements
219
WWUS54 KHUN 242223
SVSHUN
Severe Weather Statement
National Weather Service Huntsville AL
523 PM CDT Sat Apr 24 2021
ALC095-242232-
/O.CAN.KHUN.SV.W.0041.000000T0000Z-210424T2230Z/
Marshall AL-
523 PM CDT Sat Apr 24 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MARSHALL COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
north central and northeastern Alabama.
LAT...LON 3452 8596 3452 8610 3470 8613 3477 8579
3453 8575
TIME...MOT...LOC 2222Z 263DEG 37KT 3462 8603
$$
ALC049-071-242230-
/O.CON.KHUN.SV.W.0041.000000T0000Z-210424T2230Z/
Jackson AL-DeKalb AL-
523 PM CDT Sat Apr 24 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR SOUTH CENTRAL JACKSON AND CENTRAL DEKALB COUNTIES...
At 522 PM CDT, a severe thunderstorm was located near Scottsboro,
moving east at 45 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Scottsboro, Rainsville, Henagar, Sylvania, Hollywood, Powell,
Section, Pisgah, Dutton and Langston.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3452 8596 3452 8610 3470 8613 3477 8579
3453 8575
TIME...MOT...LOC 2222Z 263DEG 37KT 3462 8603
HAIL...1.25IN
WIND...60MPH
$$
RSB573
WWUS54 KHUN 242230
SVSHUN
Severe Weather Statement
National Weather Service Huntsville AL
530 PM CDT Sat Apr 24 2021
ALC049-071-242239-
/O.EXP.KHUN.SV.W.0041.000000T0000Z-210424T2230Z/
Jackson AL-DeKalb AL-
530 PM CDT Sat Apr 24 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL JACKSON AND
CENTRAL DEKALB COUNTIES WILL EXPIRE AT 530 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However small hail
is still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
northeastern Alabama.
LAT...LON 3452 8596 3452 8610 3470 8613 3477 8579
3453 8575
TIME...MOT...LOC 2229Z 262DEG 44KT 3463 8594
$$
RSBThe 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, 4:06 PM CDT | Severe Thunderstorm Warning | HUN | Cullman, Morgan | 24 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, 5:18 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, 2021Every 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.