Alert archive / Alabama / Tornado Warnings in 2018

Tornado Warning 23, NWS Birmingham, AL

December 1, 2018Chilton County, Dallas County, Perry County, Alabama

NWS Birmingham, AL issued this tornado warning at Dec 1, 2018, 2:57 PM CST for Chilton County, Dallas County, Perry 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: Dec 1, 2018, 2:57 PM CST (20:57 UTC)
Expired: Dec 1, 2018, 3:30 PM CST
In force: 33 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Chilton County, AL, Dallas County, AL, Perry County, AL

The radar

The Birmingham radar (KBMX), 68 km from the middle of the area, began a volume at 21:00 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 nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 9.0 hours before the alert went out and 68 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: 515 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 763 m²/s²
0-3 km storm-relative helicity: 1064 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.9

Open this sounding in Storm Lab

The text

As transmitted.

922 
WFUS54 KBMX 012057
TORBMX
ALC021-047-105-012130-
/O.NEW.KBMX.TO.W.0023.181201T2057Z-181201T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Birmingham AL
257 PM CST SAT DEC 1 2018

The National Weather Service in Birmingham has issued a

* Tornado Warning for...
  Southwestern Chilton County in central Alabama...
  East central Perry County in central Alabama...
  Northeastern Dallas County in south central Alabama...

* Until 330 PM CST.
    
* At 257 PM CST, a severe thunderstorm capable of producing a tornado
  was located 9 miles southeast of Marion, moving east at 30 mph.

  HAZARD...Tornado and quarter size hail.

  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...
  Parnell, Paul M Grist State Park, Valley Creek Junction,
  Plantersville, Suttle and Radford.

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 3252 8727 3259 8732 3280 8693 3266 8689
      3266 8692 3257 8690
TIME...MOT...LOC 2057Z 261DEG 25KT 3257 8718 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

05

3 follow-up statements

004 
WWUS54 KBMX 012059
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
259 PM CST SAT DEC 1 2018

ALC021-047-105-012130-
/O.CON.KBMX.TO.W.0023.000000T0000Z-181201T2130Z/
Chilton AL-Perry AL-Dallas AL-
259 PM CST SAT DEC 1 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CST FOR
SOUTHWESTERN CHILTON...EAST CENTRAL PERRY AND NORTHEASTERN DALLAS
COUNTIES...
    
At 259 PM CST, a severe thunderstorm capable of producing a tornado
was located 9 miles southeast of Marion, moving east at 30 mph.

HAZARD...Tornado and quarter size hail.

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...
Parnell, Paul M Grist State Park, Valley Creek Junction,
Plantersville and Radford.

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 3254 8719 3259 8723 3280 8693 3266 8689
      3266 8692 3257 8690
TIME...MOT...LOC 2059Z 261DEG 25KT 3257 8716 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

05

857 
WWUS54 KBMX 012104
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
304 PM CST SAT DEC 1 2018

ALC021-047-105-012130-
/O.CON.KBMX.TO.W.0023.000000T0000Z-181201T2130Z/
Chilton AL-Perry AL-Dallas AL-
304 PM CST SAT DEC 1 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CST FOR
SOUTHWESTERN CHILTON...EAST CENTRAL PERRY AND NORTHEASTERN DALLAS
COUNTIES...
    
At 304 PM CST, a severe thunderstorm capable of producing a tornado
was located near Paul M Grist State Park, or 8 miles northwest of
Valley Grande, moving east at 35 mph.

HAZARD...Tornado and quarter size hail.

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...
Parnell, Paul M Grist State Park, Valley Creek Junction and
Plantersville.

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 3254 8715 3261 8716 3267 8711 3272 8691
      3266 8689 3266 8692 3257 8690
TIME...MOT...LOC 2104Z 259DEG 30KT 3258 8710 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

05

666 
WWUS54 KBMX 012115
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
315 PM CST SAT DEC 1 2018

ALC105-012125-
/O.CAN.KBMX.TO.W.0023.000000T0000Z-181201T2130Z/
Perry AL-
315 PM CST SAT DEC 1 2018

...THE TORNADO WARNING FOR EAST CENTRAL PERRY COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 3257 8708 3260 8704 3261 8705 3264 8705
      3266 8703 3269 8703 3272 8691 3267 8689
      3266 8689 3266 8692 3257 8690 3255 8708
TIME...MOT...LOC 2115Z 262DEG 25KT 3259 8701 

$$

ALC021-047-012130-
/O.CON.KBMX.TO.W.0023.000000T0000Z-181201T2130Z/
Chilton AL-Dallas AL-
315 PM CST SAT DEC 1 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CST FOR
SOUTHWESTERN CHILTON AND NORTHEASTERN DALLAS COUNTIES...
    
At 315 PM CST, a severe thunderstorm capable of producing a tornado
was located over Paul M Grist State Park, or near Valley Grande,
moving east at 30 mph.

HAZARD...Tornado and quarter size hail.

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...
Parnell, Paul M Grist State Park, Valley Creek Junction and
Plantersville.

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 3257 8708 3260 8704 3261 8705 3264 8705
      3266 8703 3269 8703 3272 8691 3267 8689
      3266 8689 3266 8692 3257 8690 3255 8708
TIME...MOT...LOC 2115Z 262DEG 25KT 3259 8701 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

05

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 1, 2:44 PM CST	Special Weather Statement	BMX	Clay, Talladega	31 min
Dec 1, 3:09 PM CST	Special Weather Statement	BMX	Cleburne	36 min
Dec 1, 3:19 PM CST	Tornado Warning	BMX	Autauga, Chilton, Dallas	41 min

Nearby

Tornado Warnings in Alabama, 2018 Every tornado warning in 2018 Tornadoes in 2018

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.