Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 89, NWS Huntsville, AL

December 6, 2021Colbert County, Franklin County, Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Dec 6, 2021, 6:01 AM CST for Colbert County, Franklin County, Alabama. It was in force for 29 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Dec 6, 2021, 6:01 AM CST (12:01 UTC)
Expired: Dec 6, 2021, 6:30 AM CST
In force: 29 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Colbert County, AL, Franklin County, AL

The radar

The Columbus AFB radar (KGWX), 96 km from the middle of the area, began a volume at 12:02 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.

What was reported inside it

Time	Report	Where	Remark
Dec 6, 6:32 AM CST	TSTM WND DMG	4 Sw Tuscumbia, AL	TREE DOWNED NEAR INTERSECTION OF FRANKFORT ROAD AND HOLLAND LANE.
Dec 6, 6:32 AM CST	TSTM WND DMG	4 Sw Tuscumbia, AL	TREE DOWNED IN THE 10000 BLOCK OF FRANKFORT RD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 0.0 hours before the alert went out and 192 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: 792 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: -176 m²/s²
0-3 km storm-relative helicity: -47 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

152 
WUUS54 KHUN 061201
SVRHUN
ALC033-059-061230-
/O.NEW.KHUN.SV.W.0089.211206T1201Z-211206T1230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Huntsville AL
601 AM CST Mon Dec 6 2021

The National Weather Service in Huntsville Alabama has issued a

* Severe Thunderstorm Warning for...
  Colbert County in northwestern Alabama...
  Franklin County in northwestern Alabama...

* Until 630 AM CST.

* At 601 AM CST, severe thunderstorms were located along a line
  extending from near Midway to near Sandy Springs to near Tupelo,
  moving east at 55 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Muscle Shoals, Russellville, Sheffield, Tuscumbia, Red Bay,
  Cherokee, Littleville, Leighton, Belgreen and Vina.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 3476 8811 3477 8787 3474 8784 3473 8778
      3474 8774 3477 8770 3478 8749 3431 8776
      3432 8817
TIME...MOT...LOC 1201Z 274DEG 49KT 3469 8825 3451 8835 3430 8877 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

JMS

2 follow-up statements

063 
WWUS54 KHUN 061221
SVSHUN

Severe Weather Statement
National Weather Service Huntsville AL
621 AM CST Mon Dec 6 2021

ALC033-059-061230-
/O.CON.KHUN.SV.W.0089.000000T0000Z-211206T1230Z/
Colbert AL-Franklin AL-
621 AM CST Mon Dec 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 AM CST
FOR SOUTHWESTERN COLBERT AND FRANKLIN COUNTIES...

At 621 AM CST, severe thunderstorms were located along a line
extending from 6 miles south of Cherokee to 6 miles northeast of Red
Bay to near Fulton, moving east at 55 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Russellville, Red Bay, Belgreen, Vina, Hodges, Pogo, Cedar Creek
Reservoir, Atwood, Srygley Church and Duketon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 3462 8813 3461 8783 3461 8772 3431 8776
      3432 8817
TIME...MOT...LOC 1221Z 274DEG 49KT 3467 8794 3449 8804 3428 8846 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

JMS

496 
WWUS54 KHUN 061225
SVSHUN

Severe Weather Statement
National Weather Service Huntsville AL
625 AM CST Mon Dec 6 2021

ALC033-059-061235-
/O.EXP.KHUN.SV.W.0089.000000T0000Z-211206T1230Z/
Colbert AL-Franklin AL-
625 AM CST Mon Dec 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN COLBERT AND
FRANKLIN COUNTIES WILL EXPIRE AT 630 AM CST...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with these thunderstorms.

LAT...LON 3462 8813 3461 8783 3461 8772 3431 8776
      3432 8817
TIME...MOT...LOC 1225Z 274DEG 49KT 3467 8789 3449 8799 3428 8841 

$$

JMS

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 6, 6:31 AM CST	Special Weather Statement	HUN	Colbert, Franklin, Lawrence	29 min
Dec 6, 6:59 AM CST	Special Weather Statement	HUN	Franklin, Lawrence	31 min
Dec 6, 7:02 AM CST	Severe Thunderstorm Warning	HUN	Colbert, Lauderdale, Limestone, Madison	28 min
Dec 6, 7:05 AM CST	Severe Thunderstorm Warning	HUN	Franklin, Lawrence	40 min
Dec 6, 8:07 AM CST	Special Weather Statement	HUN	Madison	23 min
Dec 6, 8:34 AM CST	Special Weather Statement	HUN	Madison	41 min
Dec 6, 8:50 AM CST	Special Weather Statement	HUN	Cullman, Morgan	40 min
Dec 6, 9:06 AM CST	Severe Thunderstorm Warning	HUN	Cullman, Morgan	24 min
Dec 6, 9:11 AM CST	Special Weather Statement	HUN	Madison	34 min
Dec 6, 9:16 AM CST	Tornado Warning	HUN	Morgan	14 min
Dec 6, 9:34 AM CST	Severe Thunderstorm Warning	HUN	Cullman, Marshall, Morgan	26 min
Dec 6, 9:57 AM CST	Tornado Warning	HUN	Cullman, Marshall	18 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.