Alert archive / Alabama / Tornado Warnings in 2017

Tornado Warning 21, NWS Birmingham, AL

April 27, 2017Pickens County, Alabama

NWS Birmingham, AL issued this tornado warning at Apr 27, 2017, 12:07 AM CDT for Pickens County, Alabama. It was in force for 25 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: Apr 27, 2017, 12:07 AM CDT (05:07 UTC)
Expired: Apr 27, 2017, 12:32 AM CDT
In force: 25 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Pickens County, AL

The radar

The Columbus AFB radar (KGWX), 73 km from the middle of the area, began a volume at 05:08 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
Apr 26, 11:02 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 5.1 hours before the alert went out and 126 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: 1641 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 86 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

650 
WFUS54 KBMX 270507
TORBMX
ALC107-270545-
/O.NEW.KBMX.TO.W.0021.170427T0507Z-170427T0545Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Birmingham AL
1207 AM CDT THU APR 27 2017

The National Weather Service in Birmingham has issued a

* Tornado Warning for...
  Central Pickens County in west central Alabama...

* Until 1245 AM CDT
    
* At 1207 AM CDT, a severe thunderstorm capable of producing a
  tornado was located near Bevill Lock And Dam, or near Pickensville,
  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, Gordo, Reform, Carrollton, Pickensville, McMullen,
  Garden, Bevill Lock And Dam, Gainesville Lake Boat Ramp And
  Campground, Dillburg, North Pickens Airport, George Downer Airport,
  Owens, Kirk and Lubbub.

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 3326 8831 3351 8784 3323 8784 3305 8833
TIME...MOT...LOC 0507Z 238DEG 40KT 3314 8830 

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

$$

87/GRANTHAM

3 follow-up statements

761 
WWUS54 KBMX 270514
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
1214 AM CDT THU APR 27 2017

ALC107-270545-
/O.CON.KBMX.TO.W.0021.000000T0000Z-170427T0545Z/
Pickens AL-
1214 AM CDT THU APR 27 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1245 AM CDT FOR CENTRAL
PICKENS COUNTY...
    
At 1214 AM CDT, a severe thunderstorm capable of producing a tornado
was located over Garden, or 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, Gordo, Reform, Carrollton, Pickensville, McMullen,
Garden, Dillburg, North Pickens Airport, George Downer Airport,
Owens, Kirk and Lubbub.

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 3308 8824 3326 8830 3348 8784 3323 8784
TIME...MOT...LOC 0514Z 242DEG 37KT 3318 8821 

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

$$

87/GRANTHAM

508 
WWUS54 KBMX 270527
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
1227 AM CDT THU APR 27 2017

ALC107-270545-
/O.CON.KBMX.TO.W.0021.000000T0000Z-170427T0545Z/
Pickens AL-
1227 AM CDT THU APR 27 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1245 AM CDT FOR EAST
CENTRAL PICKENS COUNTY...
    
At 1227 AM CDT, a severe thunderstorm capable of producing a tornado
was located over Carrollton, 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...
Gordo, Reform, Carrollton, Owens, Kirk, Dillburg and Lubbub. 

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 3313 8810 3329 8818 3347 8784 3323 8784
TIME...MOT...LOC 0527Z 243DEG 40KT 3324 8806 

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

$$

87/GRANTHAM

403 
WWUS54 KBMX 270532
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
1232 AM CDT THU APR 27 2017

ALC107-270542-
/O.CAN.KBMX.TO.W.0021.000000T0000Z-170427T0545Z/
Pickens AL-
1232 AM CDT THU APR 27 2017

...THE TORNADO WARNING FOR EAST CENTRAL PICKENS COUNTY IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning has been cancelled.

A severe thunderstorm watch remains in effect until 500 AM CDT for
west central Alabama.

LAT...LON 3313 8810 3329 8818 3347 8784 3323 8784
TIME...MOT...LOC 0531Z 238DEG 40KT 3327 8800 

$$

87/GRANTHAM

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 12:06 AM CDT	Severe Thunderstorm Warning	BMX	Sumter	39 min
Apr 27, 12:33 AM CDT	Severe Thunderstorm Warning	BMX	Greene	42 min
Apr 27, 12:56 AM CDT	Severe Thunderstorm Warning	BMX	Sumter	49 min
Apr 27, 6:13 AM CDT	Tornado Warning	BMX	Lowndes	13 min
Apr 27, 8:41 AM CDT	Special Weather Statement	BMX	Tallapoosa	34 min
Apr 27, 9:09 AM CDT	Tornado Warning	BMX	Bullock, Montgomery	20 min
Apr 27, 11:21 AM CDT	Tornado Warning	BMX	Pike	24 min
Apr 27, 11:31 AM CDT	Tornado Warning	BMX	Lee, Russell	14 min
Apr 27, 11:40 AM CDT	Tornado Warning Tornado observed	BMX	Bullock	36 min
Apr 27, 11:58 AM CDT	Tornado Warning	BMX	Russell	27 min
Apr 27, 12:04 PM CDT	Tornado Warning	BMX	Barbour, Bullock	41 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.