Alert archive / Alabama / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 69, NWS Huntsville, AL
NWS Huntsville, AL issued this severe thunderstorm warning at Jul 30, 2021, 6:28 PM CDT for Jackson County, Madison County, Alabama. It was in force for 32 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
- Jul 30, 2021, 6:28 PM CDT (23:28 UTC)
- Expired
- Jul 30, 2021, 7:00 PM CDT
- In force
- 32 min
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Jackson County, AL, Madison County, AL
The radar
The Northeast Alabama radar (KHTX), 44 km from the middle of the area, began a volume at 23:30 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 nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 11.5 hours before the alert went out and 162 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
- 1105 J/kg
- Mixed-layer CIN
- -98 J/kg
- Mixed-layer LCL
- 1087 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -22 m²/s²
- 0-3 km storm-relative helicity
- -15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
144
WUUS54 KHUN 302328
SVRHUN
ALC071-089-310000-
/O.NEW.KHUN.SV.W.0069.210730T2328Z-210731T0000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Huntsville AL
628 PM CDT Fri Jul 30 2021
The National Weather Service in Huntsville Alabama has issued a
* Severe Thunderstorm Warning for...
West central Jackson County in northeastern Alabama...
Southeastern Madison County in north central Alabama...
* Until 700 PM CDT.
* At 628 PM CDT, a severe thunderstorm was located over Gurley, or 9
miles east of Huntsville, moving southeast at 15 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Owens Cross Roads, Gurley, Woodville, Paint Rock, Maysville, Lim
Rock, Garth, Hampton Cove and Brownsboro.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3465 8613 3460 8621 3460 8630 3458 8630
3457 8633 3456 8631 3452 8633 3451 8634
3452 8635 3451 8637 3452 8639 3450 8639
3450 8640 3474 8652 3483 8637
TIME...MOT...LOC 2328Z 322DEG 11KT 3473 8641
HAIL...<.75IN
WIND...60MPH
$$
KTW1 follow-up statement
481
WWUS54 KHUN 302357 RRA
SVSHUN
Severe Weather Statement
National Weather Service Huntsville AL
657 PM CDT Fri Jul 30 2021
ALC071-089-310007-
/O.EXP.KHUN.SV.W.0069.000000T0000Z-210731T0000Z/
Jackson AL-Madison AL-
657 PM CDT Fri Jul 30 2021
...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL JACKSON AND
SOUTHEASTERN MADISON COUNTIES WILL EXPIRE AT 700 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with this thunderstorm.
LAT...LON 3465 8613 3460 8621 3460 8630 3458 8630
3457 8633 3456 8631 3452 8633 3451 8634
3452 8635 3451 8637 3452 8639 3450 8639
3450 8640 3474 8652 3483 8637
TIME...MOT...LOC 2357Z 322DEG 11KT 3467 8635
$$
KTWThe office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 1:42 PM CDT | Excessive Heat Warning | HUN | Colbert, Franklin, Lauderdale, Lawrence | 5 hr |
| Jul 30, 2:24 PM CDT | Heat Advisory | HUN | Colbert, Cullman, DeKalb, Franklin, Jackson, Lauderdale and 5 more | 29 hr |
| Jul 30, 3:25 PM CDT | Special Weather Statement | HUN | Lawrence | 50 min |
| Jul 30, 3:59 PM CDT | Special Weather Statement | HUN | Jackson | 31 min |
| Jul 30, 4:08 PM CDT | Severe Thunderstorm Warning | HUN | DeKalb, Jackson, Marshall | 37 min |
| Jul 30, 4:09 PM CDT | Special Weather Statement | HUN | Morgan | 51 min |
| Jul 30, 4:13 PM CDT | Special Weather Statement | HUN | Marshall | 47 min |
| Jul 30, 4:48 PM CDT | Special Weather Statement | HUN | DeKalb | 27 min |
| Jul 30, 5:20 PM CDT | Special Weather Statement | HUN | DeKalb | 25 min |
| Jul 30, 5:26 PM CDT | Special Weather Statement | HUN | Lauderdale | 49 min |
| Jul 30, 5:36 PM CDT | Special Weather Statement | HUN | Jackson | 9 min |
| Jul 30, 5:45 PM CDT | Special Weather Statement | HUN | Limestone, Madison | 30 min |
| Jul 30, 5:46 PM CDT | Special Weather Statement | HUN | Jackson | 44 min |
| Jul 30, 5:58 PM CDT | Severe Thunderstorm Warning | HUN | Colbert, Lauderdale, Lawrence, Limestone | 32 min |
| Jul 30, 6:10 PM CDT | Special Weather Statement | HUN | Lawrence, Limestone, Madison, Morgan | 50 min |
| Jul 30, 6:37 PM CDT | Severe Thunderstorm Warning | HUN | Cullman | 23 min |
| Jul 30, 6:55 PM CDT | Special Weather Statement | HUN | Cullman, DeKalb, Lawrence, Marshall, Morgan | 50 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.