Alert archive / Alabama / Tornado Warnings in 2017

Tornado Warning 29, NWS Birmingham, AL

April 30, 2017Pickens County, Sumter County, Alabama

NWS Birmingham, AL issued this tornado warning at Apr 30, 2017, 11:28 AM CDT for Pickens County, Sumter County, Alabama. It was in force for 47 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: Apr 30, 2017, 11:28 AM CDT (16:28 UTC)
Expired: Apr 30, 2017, 12:15 PM CDT
In force: 47 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Pickens County, AL, Sumter County, AL

The radar

The Columbus AFB radar (KGWX), 87 km from the middle of the area, began a volume at 16:29 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
Apr 30, 11:29 AM CDT	TSTM WND DMG	4 Wsw Gainsville Lake C, AL	A CHURCH SUSTAINED DAMAGE AND PLENTY OF SMALL TREE DEBRIS LITTERING THE GROUND.
Apr 30, 11:58 AM CDT	TSTM WND DMG	Aliceville, AL	BUILDING WITH ROOF DAMAGE IN DOWNTOWN ALICEVILLE. SOME METAL IS ON THE ROAD.

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

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 30, 10:36 AM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 4.5 hours before the alert went out and 130 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: 53 J/kg
Mixed-layer CIN: -333 J/kg
Mixed-layer LCL: 867 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 224 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

788 
WFUS54 KBMX 301628
TORBMX
ALC107-119-301715-
/O.NEW.KBMX.TO.W.0029.170430T1628Z-170430T1715Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Birmingham AL
1128 AM CDT SUN APR 30 2017

The National Weather Service in Birmingham has issued a

* Tornado Warning for...
  Southern Pickens County in west central Alabama...
  Northwestern Sumter County in west central Alabama...

* Until 1215 PM CDT
    
* At 1127 AM CDT, a severe thunderstorm capable of producing a
  tornado was located over Cooksville, or 15 miles southwest of
  Aliceville, 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...
  Aliceville, Carrollton, Pickensville, McMullen, Garden, Panola,
  Benevola, Johnston Lake, Bevill Lock And Dam, Gainesville Lake Boat
  Ramp And Campground, Dillburg, George Downer Airport, Pioneer,
  Cochrane and Pine Grove.

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 3337 8830 3340 8828 3318 8784 3304 8806
      3304 8815 3303 8814 3301 8817 3298 8817
      3287 8836
TIME...MOT...LOC 1627Z 215DEG 38KT 3297 8836 

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

$$

61

2 follow-up statements

328 
WWUS54 KBMX 301642
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
1142 AM CDT SUN APR 30 2017

ALC119-301651-
/O.CAN.KBMX.TO.W.0029.000000T0000Z-170430T1715Z/
Sumter AL-
1142 AM CDT SUN APR 30 2017

...THE TORNADO WARNING FOR NORTHWESTERN SUMTER 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 700 PM CDT for west central
Alabama.

LAT...LON 3339 8829 3340 8828 3318 8784 3304 8806
      3305 8807 3305 8808 3304 8809 3304 8815
      3303 8814 3301 8817 3300 8817 3300 8821
      3302 8827 3316 8832
TIME...MOT...LOC 1641Z 236DEG 36KT 3304 8819 

$$

ALC107-301715-
/O.CON.KBMX.TO.W.0029.000000T0000Z-170430T1715Z/
Pickens AL-
1142 AM CDT SUN APR 30 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1215 PM CDT FOR SOUTHERN
PICKENS COUNTY...
    
At 1141 AM CDT, a severe thunderstorm capable of producing a tornado
was located near Aliceville, moving northeast at 40 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...
Aliceville, Carrollton, Pickensville, McMullen, Garden, Benevola,
Johnston Lake, Bevill Lock And Dam, Gainesville Lake Boat Ramp And
Campground, Dillburg, George Downer Airport, Pioneer, Cochrane and
Pine Grove.

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 3339 8829 3340 8828 3318 8784 3304 8806
      3305 8807 3305 8808 3304 8809 3304 8815
      3303 8814 3301 8817 3300 8817 3300 8821
      3302 8827 3316 8832
TIME...MOT...LOC 1641Z 236DEG 36KT 3304 8819 

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

$$

61

728 
WWUS54 KBMX 301656
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
1156 AM CDT SUN APR 30 2017

ALC107-301715-
/O.CON.KBMX.TO.W.0029.000000T0000Z-170430T1715Z/
Pickens AL-
1156 AM CDT SUN APR 30 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1215 PM CDT FOR CENTRAL
PICKENS COUNTY...
    
At 1156 AM CDT, a severe thunderstorm capable of producing a tornado
was located over Johnston Lake, or near Aliceville, 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...
Carrollton, Johnston Lake and Dillburg. 

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 3320 8789 3312 8802 3312 8810 3319 8816
      3331 8822 3336 8820 3324 8796
TIME...MOT...LOC 1656Z 229DEG 38KT 3314 8807 

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

$$

61

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 11:11 AM CDT	Severe Thunderstorm Warning	BMX	Greene, Pickens, Sumter	64 min
Apr 30, 11:46 AM CDT	Tornado Warning	BMX	Lamar	44 min
Apr 30, 11:53 AM CDT	Severe Thunderstorm Warning	BMX	Lamar, Marion	52 min
Apr 30, 12:12 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Greene, Pickens, Tuscaloosa	63 min
Apr 30, 12:18 PM CDT	Special Weather Statement	BMX	Greene, Hale, Marengo	57 min
Apr 30, 12:19 PM CDT	Tornado Warning	BMX	Fayette, Lamar, Marion	14 min
Apr 30, 12:37 PM CDT	Severe Thunderstorm Warning	BMX	Marion	23 min
Apr 30, 12:39 PM CDT	Tornado Warning	BMX	Fayette	22 min
Apr 30, 12:54 PM CDT	Severe Thunderstorm Warning	BMX	Marion, Walker, Winston	66 min
Apr 30, 1:12 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Jefferson, Tuscaloosa, Walker	63 min
Apr 30, 1:14 PM CDT	Special Weather Statement	BMX	Bibb, Hale, Marengo, Perry	46 min
Apr 30, 1:45 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Jefferson	60 min
Apr 30, 2:01 PM CDT	Special Weather Statement	BMX	Shelby	74 min
Apr 30, 2:30 PM CDT	Severe Thunderstorm Warning	BMX	St. Clair	48 min
Apr 30, 2:41 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Etowah	64 min
Apr 30, 3:12 PM CDT	Special Weather Statement	BMX	Dallas	63 min
Apr 30, 3:35 PM CDT	Special Weather Statement	BMX	Etowah	40 min
Apr 30, 3:47 PM CDT	Special Weather Statement	BMX	Autauga	43 min
Apr 30, 4:16 PM CDT	Special Weather Statement	BMX	Coosa	29 min
Apr 30, 4:48 PM CDT	Special Weather Statement	BMX	Clay, Coosa, Elmore, Tallapoosa	42 min
Apr 30, 5:19 PM CDT	Special Weather Statement	BMX	Clay, Randolph	41 min
Apr 30, 5:59 PM CDT	Special Weather Statement	BMX	Cleburne	31 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.