Alert archive / Alabama / Tornado Warnings in 2020
Tornado Warning 21, NWS Huntsville, AL
NWS Huntsville, AL issued this tornado warning at Mar 24, 2020, 8:39 PM CDT for DeKalb County, Alabama. It was in force for 12 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 24, 2020, 8:39 PM CDT (01:39 UTC)
- Expired
- Mar 24, 2020, 8:51 PM CDT
- In force
- 12 min
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
- Tornado
- Radar indicated
County DeKalb County, AL
The radar
The Northeast Alabama radar (KHTX), 51 km from the middle of the area, began a volume at 01:38 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 24, 3:06 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 1.7 hours before the alert went out and 176 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
- 93 J/kg
- Mixed-layer CIN
- -88 J/kg
- Mixed-layer LCL
- 1542 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 138 m²/s²
- 0-3 km storm-relative helicity
- 271 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted.
894
WFUS54 KHUN 250139
TORHUN
ALC049-250215-
/O.NEW.KHUN.TO.W.0021.200325T0139Z-200325T0215Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Huntsville AL
839 PM CDT Tue Mar 24 2020
The National Weather Service in Huntsville Alabama has issued a
* Tornado Warning for...
East central DeKalb County in northeastern Alabama...
* Until 915 PM CDT.
* At 839 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Henagar, or 8 miles northeast of Rainsville,
moving east at 35 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* Locations impacted include...
Henagar, Sylvania, Ider, Valley Head, Hammondville, Mentone and
Sulpher Springs.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3456 8582 3461 8582 3463 8578 3469 8573
3471 8555 3455 8552 3454 8552
TIME...MOT...LOC 0139Z 267DEG 30KT 3459 8574
TORNADO...RADAR INDICATED
HAIL...<.75
$$
AMP2 follow-up statements
465
WWUS54 KHUN 250147
SVSHUN
Severe Weather Statement
National Weather Service Huntsville AL
847 PM CDT Tue Mar 24 2020
ALC049-250215-
/O.CON.KHUN.TO.W.0021.000000T0000Z-200325T0215Z/
DeKalb AL-
847 PM CDT Tue Mar 24 2020
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR EAST
CENTRAL DEKALB COUNTY...
At 847 PM CDT, a severe thunderstorm capable of producing a tornado
was located 8 miles southeast of Ider, or 14 miles northeast of Fort
Payne, moving east at 50 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Valley Head, Hammondville, Mentone and Sulpher Springs.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3455 8568 3461 8568 3465 8564 3470 8560
3471 8555 3455 8552 3454 8552
TIME...MOT...LOC 0147Z 265DEG 41KT 3460 8557
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
AMP485
WWUS54 KHUN 250151
SVSHUN
Severe Weather Statement
National Weather Service Huntsville AL
851 PM CDT Tue Mar 24 2020
ALC049-250201-
/O.CAN.KHUN.TO.W.0021.000000T0000Z-200325T0215Z/
DeKalb AL-
851 PM CDT Tue Mar 24 2020
...THE TORNADO WARNING FOR EAST CENTRAL DEKALB COUNTY IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled. However gusty winds and
heavy rain are still possible with this thunderstorm.
A Tornado Watch remains in effect until 1000 PM CDT for northeastern
Alabama.
LAT...LON 3455 8568 3461 8568 3465 8564 3470 8560
3471 8555 3455 8552 3454 8552
TIME...MOT...LOC 0150Z 267DEG 30KT 3460 8552
$$
AMPThe office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 24, 7:19 PM CDT | Tornado Warning | HUN | Limestone, Madison, Marshall, Morgan | 41 min |
| Mar 24, 7:21 PM CDT | Areal Flood Warning | HUN | Colbert, Lauderdale, Lawrence, Morgan | 3 hr |
| Mar 24, 7:28 PM CDT | Severe Thunderstorm Warning | HUN | Jackson, Madison | 47 min |
| Mar 24, 7:52 PM CDT | Special Weather Statement | HUN | Cullman | 38 min |
| Mar 24, 7:57 PM CDT | Tornado Warning | HUN | DeKalb, Jackson, Marshall | 48 min |
| Mar 24, 8:18 PM CDT | Special Weather Statement | HUN | Jackson | 27 min |
| Mar 24, 8:32 PM CDT | Tornado Warning | HUN | DeKalb | 24 min |
| Mar 24, 8:50 PM CDT | Special Weather Statement | HUN | Marshall | 40 min |
| Mar 24, 8:57 PM CDT | Special Weather Statement | HUN | DeKalb | 48 min |
| Mar 24, 9:53 PM CDT | Special Weather Statement | HUN | DeKalb, Marshall | 52 min |
| Mar 25, 1:23 AM CDT | Areal Flood Warning | HUN | Madison | 12 hr |
Nearby
Tornado Warnings in Alabama, 2020Every tornado warning in 2020Tornadoes in 2020
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.