Alert archive / Alabama / Tornado Warnings in 2017

Tornado Warning 4, NWS Birmingham, AL

January 21, 2017Autauga County, Lowndes County, Alabama

NWS Birmingham, AL issued this tornado warning at Jan 21, 2017, 7:02 AM CST for Autauga County, Lowndes County, Alabama. It was in force for 43 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 21, 2017, 7:02 AM CST (13:02 UTC)
Expired: Jan 21, 2017, 7:45 AM CST
In force: 43 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Autauga County, AL, Lowndes County, AL

The radar

The Maxwell AFB radar (KMXX), 88 km from the middle of the area, began a volume at 13:02 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jan 21, 3:56 AM CST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 1.0 hours before the alert went out and 235 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: 388 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 536 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 85 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

703 
WFUS54 KBMX 211302
TORBMX
ALC001-085-211345-
/O.NEW.KBMX.TO.W.0004.170121T1302Z-170121T1345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Birmingham AL
702 AM CST SAT JAN 21 2017

The National Weather Service in Birmingham has issued a

* Tornado Warning for...
  Northwestern Lowndes County in south central Alabama...
  Southeastern Autauga County in Alabama...

* Until 745 AM CST
    
* At 701 AM CST, a severe thunderstorm capable of producing a tornado
  was located over Benton, or 11 miles northwest of Mosses, moving
  northeast at 60 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...
  Prattville, Millbrook, Deatsville, Autaugaville, White Hall,
  Benton, Autauga County Airport, Booth and Robert F. Henry Lock And
  Dam.

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 3222 8684 3222 8681 3224 8681 3224 8683
      3228 8686 3230 8683 3231 8685 3233 8685
      3235 8681 3237 8682 3266 8641 3241 8641
      3240 8644 3241 8646 3238 8646 3236 8649
      3235 8649 3220 8682
TIME...MOT...LOC 1301Z 233DEG 50KT 3229 8682 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

87/GRANTHAM

3 follow-up statements

299 
WWUS54 KBMX 211310
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
710 AM CST SAT JAN 21 2017

ALC001-085-211345-
/O.CON.KBMX.TO.W.0004.000000T0000Z-170121T1345Z/
Lowndes AL-Autauga AL-
710 AM CST SAT JAN 21 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 AM CST FOR
NORTHWESTERN LOWNDES AND SOUTHEASTERN AUTAUGA COUNTIES...
    
At 710 AM CST, a severe thunderstorm capable of producing a tornado
was located over White Hall, or 11 miles north of Mosses, moving
northeast 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...
Prattville, Millbrook, Deatsville, Autaugaville, White Hall, Autauga
County Airport, Booth and Robert F. Henry Lock And Dam.

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 3224 8673 3234 8683 3235 8681 3237 8682
      3265 8642 3266 8641 3241 8641 3240 8644
      3241 8646 3238 8646 3236 8649 3235 8649
TIME...MOT...LOC 1310Z 237DEG 42KT 3234 8673 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

87/GRANTHAM

189 
WWUS54 KBMX 211318
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
718 AM CST SAT JAN 21 2017

ALC001-085-211345-
/O.CON.KBMX.TO.W.0004.000000T0000Z-170121T1345Z/
Lowndes AL-Autauga AL-
718 AM CST SAT JAN 21 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 AM CST FOR NORTH
CENTRAL LOWNDES AND SOUTHEASTERN AUTAUGA COUNTIES...
    
At 717 AM CST, a severe thunderstorm capable of producing a tornado
was located near Autaugaville, or 10 miles southwest of Prattville,
moving northeast at 60 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...
Prattville, Millbrook, Deatsville, Autaugaville, Booth and Autauga
County Airport.

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 3229 8663 3243 8674 3265 8642 3266 8641
      3241 8641 3240 8644 3241 8646 3238 8646
      3236 8649 3235 8649
TIME...MOT...LOC 1317Z 236DEG 50KT 3239 8660 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

87/GRANTHAM

889 
WWUS54 KBMX 211326
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
726 AM CST SAT JAN 21 2017

ALC085-211336-
/O.CAN.KBMX.TO.W.0004.000000T0000Z-170121T1345Z/
Lowndes AL-
726 AM CST SAT JAN 21 2017

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

A tornado watch remains in effect until 1100 AM CST for south
central, east central Alabama.

LAT...LON 3237 8655 3238 8658 3236 8660 3238 8662
      3241 8662 3240 8665 3242 8668 3255 8657
      3266 8641 3241 8641 3240 8643 3241 8646
      3238 8646 3236 8649 3235 8649 3234 8654
TIME...MOT...LOC 1326Z 223DEG 37KT 3241 8655 

$$

ALC001-211345-
/O.CON.KBMX.TO.W.0004.000000T0000Z-170121T1345Z/
Autauga AL-
726 AM CST SAT JAN 21 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 AM CST FOR
SOUTHEASTERN AUTAUGA COUNTY...
    
At 726 AM CST, a severe thunderstorm capable of producing a tornado
was located over Autauga County Airport, or near Prattville, moving
northeast at 45 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...
Prattville, Millbrook, Deatsville, Autaugaville, Booth and Autauga
County Airport.

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 3237 8655 3238 8658 3236 8660 3238 8662
      3241 8662 3240 8665 3242 8668 3255 8657
      3266 8641 3241 8641 3240 8643 3241 8646
      3238 8646 3236 8649 3235 8649 3234 8654
TIME...MOT...LOC 1326Z 223DEG 37KT 3241 8655 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

87/GRANTHAM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 21, 3:52 AM CST	Special Weather Statement	BMX	Dallas, Lowndes	38 min
Jan 21, 4:19 AM CST	Severe Thunderstorm Warning	BMX	Lowndes	41 min
Jan 21, 5:21 AM CST	Tornado Warning	BMX	Marengo	54 min
Jan 21, 7:24 AM CST	Severe Thunderstorm Warning	BMX	Lowndes, Montgomery	51 min
Jan 21, 7:37 AM CST	Severe Thunderstorm Warning	BMX	Elmore	38 min
Jan 21, 7:50 AM CST	Areal Flood Advisory	BMX	Autauga, Elmore, Lowndes, Montgomery	3 hr
Jan 21, 7:52 AM CST	Tornado Warning	BMX	Elmore	38 min
Jan 21, 7:58 AM CST	Tornado Warning	BMX	Elmore	32 min
Jan 21, 8:07 AM CST	Severe Thunderstorm Warning	BMX	Coosa	23 min
Jan 21, 8:22 AM CST	Tornado Warning	BMX	Coosa, Elmore, Lee, Macon, Tallapoosa	53 min
Jan 21, 8:41 AM CST	Tornado Warning	BMX	Chambers, Lee, Macon	47 min
Jan 21, 8:47 AM CST	Severe Thunderstorm Warning	BMX	Pike	43 min
Jan 21, 8:58 AM CST	Tornado Warning	BMX	Pike	47 min
Jan 21, 9:23 AM CST	Tornado Warning	BMX	Barbour	52 min

Nearby

Tornado Warnings in Alabama, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.