Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 1, NWS Huntsville, AL

January 25, 2021Jackson County, Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Jan 25, 2021, 2:12 AM CST for Jackson County, Alabama. It was in force for 33 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: Jan 25, 2021, 2:12 AM CST (08:12 UTC)
Expired: Jan 25, 2021, 2:45 AM CST
In force: 33 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Jackson County, AL

The radar

The Northeast Alabama radar (KHTX), 12 km from the middle of the area, began a volume at 08:14 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

Nashville Metro, TN (KBNA), launched 00:00Z, 8.2 hours before the alert went out and 146 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 443 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 248 m²/s²
0-3 km storm-relative helicity: 304 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

229 
WUUS54 KHUN 250812
SVRHUN
ALC071-250845-
/O.NEW.KHUN.SV.W.0001.210125T0812Z-210125T0845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Huntsville AL
212 AM CST Mon Jan 25 2021

The National Weather Service in Huntsville Alabama has issued a

* Severe Thunderstorm Warning for...
  Northern Jackson County in northeastern Alabama...

* Until 245 AM CST.

* At 212 AM CST, a severe thunderstorm was located 8 miles southeast
  of New Market, or 12 miles east of Moores Mill, moving east at 55
  mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Stevenson, Hollywood, Skyline, Hytop, Bass, Martintown, Princeton,
  Jericho, Russell Cave National Monument and Estillfork.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3473 8573 3476 8634 3479 8634 3479 8633
      3481 8635 3483 8633 3488 8635 3491 8631
      3492 8631 3493 8627 3492 8626 3494 8626
      3499 8606 3499 8576
TIME...MOT...LOC 0812Z 264DEG 49KT 3484 8630 

HAIL...1.00IN
WIND...60MPH
 
$$

30

2 follow-up statements

301 
WWUS54 KHUN 250829
SVSHUN

Severe Weather Statement
National Weather Service Huntsville AL
229 AM CST Mon Jan 25 2021

ALC071-250845-
/O.CON.KHUN.SV.W.0001.000000T0000Z-210125T0845Z/
Jackson AL-
229 AM CST Mon Jan 25 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 AM CST
FOR NORTHERN JACKSON COUNTY...

At 229 AM CST, a severe thunderstorm was located near Skyline, or 15
miles north of Scottsboro, moving east at 55 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Stevenson, Hollywood, Skyline, Hytop, Bass, Martintown, Princeton,
Russell Cave National Monument, Fabius and Estillfork.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3476 8632 3492 8619 3498 8606 3499 8602
      3499 8576 3473 8573
TIME...MOT...LOC 0829Z 248DEG 57KT 3489 8604 

HAIL...1.00IN
WIND...<50MPH
 
$$

30

957 
WWUS54 KHUN 250841
SVSHUN

Severe Weather Statement
National Weather Service Huntsville AL
241 AM CST Mon Jan 25 2021

ALC071-250851-
/O.EXP.KHUN.SV.W.0001.000000T0000Z-210125T0845Z/
Jackson AL-
241 AM CST Mon Jan 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN JACKSON COUNTY WILL
EXPIRE AT 245 AM CST...
                
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
and heavy rain are still possible with this thunderstorm.

LAT...LON 3476 8632 3492 8619 3498 8606 3499 8602
      3499 8576 3473 8573
TIME...MOT...LOC 0841Z 264DEG 49KT 3491 8585 

$$

30

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 25, 1:52 AM CST	Special Weather Statement	HUN	Madison	38 min
Jan 25, 2:44 AM CST	Special Weather Statement	HUN	Jackson	31 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.