Alert archive / Alabama / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 9, NWS Huntsville, AL
NWS Huntsville, AL issued this severe thunderstorm warning at Mar 25, 2021, 9:00 PM CDT for DeKalb County, Marshall County, Alabama. It was in force for 30 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
- Mar 25, 2021, 9:00 PM CDT (02:00 UTC)
- Expired
- Mar 25, 2021, 9:30 PM CDT
- In force
- 30 min
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
Counties DeKalb County, AL, Marshall County, AL
The radar
The Northeast Alabama radar (KHTX), 74 km from the middle of the area, began a volume at 02:00 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 |
|---|---|---|---|
| Mar 25, 7:57 PM CDT | Tornado Watch | SPC | 3 hr |
The nearest sounding before it
Birmingham, AL (KBMX), launched 00:00Z, 2.0 hours before the alert went out and 149 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
- 1313 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 662 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 341 m²/s²
- 0-3 km storm-relative helicity
- 334 m²/s²
- Significant tornado parameter
- 3.1
- Supercell composite
- 13.2
The text
As transmitted.
605
WUUS54 KHUN 260200
SVRHUN
ALC049-095-260230-
/O.NEW.KHUN.SV.W.0009.210326T0200Z-210326T0230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Huntsville AL
900 PM CDT Thu Mar 25 2021
The National Weather Service in Huntsville Alabama has issued a
* Severe Thunderstorm Warning for...
Southeastern Marshall County in northeastern Alabama...
Southern DeKalb County in northeastern Alabama...
* Until 930 PM CDT.
* At 859 PM CDT, a severe thunderstorm was located over Walnut Grove,
or 10 miles southwest of Boaz, moving northeast at 90 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...
Albertville, Fort Payne, Boaz, Rainsville, Crossville, Sylvania,
Fyffe, Geraldine, Pine Ridge and Lakeview.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 100 AM CDT for north central
and northeastern Alabama.
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 3438 8562 3436 8567 3426 8577 3426 8581
3424 8581 3424 8584 3420 8585 3420 8611
3419 8611 3418 8619 3410 8630 3413 8633
3458 8577 3447 8558 3444 8558
TIME...MOT...LOC 0159Z 227DEG 78KT 3407 8624
HAIL...1.25IN
WIND...60MPH
$$
KDW1 follow-up statement
456
WWUS54 KHUN 260216
SVSHUN
Severe Weather Statement
National Weather Service Huntsville AL
916 PM CDT Thu Mar 25 2021
ALC095-260225-
/O.CAN.KHUN.SV.W.0009.000000T0000Z-210326T0230Z/
Marshall AL-
916 PM CDT Thu Mar 25 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MARSHALL COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 100 AM CDT for north central
and northeastern Alabama.
LAT...LON 3444 8558 3438 8563 3436 8567 3426 8577
3426 8581 3424 8581 3424 8584 3420 8585
3420 8611 3431 8611 3458 8577 3447 8558
TIME...MOT...LOC 0215Z 227DEG 76KT 3426 8593
$$
ALC049-260230-
/O.CON.KHUN.SV.W.0009.000000T0000Z-210326T0230Z/
DeKalb AL-
916 PM CDT Thu Mar 25 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR SOUTHERN DEKALB COUNTY...
At 915 PM CDT, a severe thunderstorm was located near Crossville, or
13 miles east of Boaz, moving northeast at 85 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Public.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Fort Payne, Rainsville, Crossville, Sylvania, Fyffe, Geraldine, Pine
Ridge, Lakeview, Dog Town and Collbran.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 100 AM CDT for north central
and northeastern Alabama.
For your protection move to an interior room on the lowest floor of a
building.
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 3444 8558 3438 8563 3436 8567 3426 8577
3426 8581 3424 8581 3424 8584 3420 8585
3420 8611 3431 8611 3458 8577 3447 8558
TIME...MOT...LOC 0215Z 227DEG 76KT 3426 8593
HAIL...1.00IN
WIND...60MPH
$$
KDWThe office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 25, 7:20 PM CDT | Special Weather Statement | HUN | Lauderdale | 25 min |
| Mar 25, 7:42 PM CDT | Special Weather Statement | HUN | Lauderdale | 33 min |
| Mar 25, 9:05 PM CDT | Areal Flood Warning | HUN | DeKalb, Jackson, Marshall | 19 min |
| Mar 25, 9:26 PM CDT | Severe Thunderstorm Warning | HUN | DeKalb | 19 min |
| Mar 26, 12:20 AM CDT | River Flood Warning | HUN | Colbert, Lauderdale | 12 days |
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.