Alert archive / Alabama / Tornado Warnings in 2017

Tornado Warning 43, NWS Birmingham, AL

August 31, 2017Pickens County, Alabama

NWS Birmingham, AL issued this tornado warning at Aug 31, 2017, 3:12 PM CDT for Pickens County, Alabama. It was in force for 48 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
Aug 31, 2017, 3:12 PM CDT (20:12 UTC)
Expired
Aug 31, 2017, 4:00 PM CDT
In force
48 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), 75 km from the middle of the area, began a volume at 20:17 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

TimeReportWhereRemark
Aug 31, 3:40 PM CDTTORNADO1 W Reform, AL*** 6 INJ *** NWS METEOROLOGISTS SURVEYED DAMAGE IN NORTHERN PICKENS COUNTY AND FOUND THAT THE DAMAGE WAS CONSISTENT WITH AN EF2 TORNADO, WITH MAXIMUM SUSTAINED WINDS NEAR 115 MPH.
Aug 31, 3:42 PM CDTTORNADO1 Nw Reform, ALTORNADO REPORTED NEAR DOLLAR GENERAL STORE IN REFORM RELAYED VIA 911 CALL CENTER. TDS ALSO VISIBLE ON KBMX RADAR AT 20:42Z.

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.

IssuedProductOfficeLasted
Aug 31, 11:13 AM CDTTornado WatchSPC11 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 8.2 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-pSkew-T log-p diagram, Birmingham, AL at 12:00Z on 2017-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 724 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 12:00Z on 2017-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 198 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
724 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
569 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
198 m²/s²
0-3 km storm-relative helicity
229 m²/s²
Significant tornado parameter
0.5
Supercell composite
4.5

Open this sounding in Storm Lab

The text

As transmitted.

578 
WFUS54 KBMX 312012
TORBMX
ALC107-312100-
/O.NEW.KBMX.TO.W.0043.170831T2012Z-170831T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Birmingham AL
312 PM CDT THU AUG 31 2017

The National Weather Service in Birmingham has issued a

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

* Until 400 PM CDT
    
* At 312 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Garden, or over Aliceville, moving northeast at 35
  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, Reform, Carrollton, Pickensville, McMullen, Garden,
  Owens, Dillburg, North Pickens Airport, McShan and George Downer
  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 3307 8816 3311 8828 3351 8816 3345 8788
TIME...MOT...LOC 2012Z 204DEG 31KT 3314 8821 

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

$$

32/Davis
3 follow-up statements
128 
WWUS54 KBMX 312023
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
323 PM CDT THU AUG 31 2017

ALC107-312100-
/O.CON.KBMX.TO.W.0043.000000T0000Z-170831T2100Z/
Pickens AL-
323 PM CDT THU AUG 31 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 PM CDT FOR
NORTHEASTERN PICKENS COUNTY...
    
At 323 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Carrollton, moving northeast at 35 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...
Reform, Carrollton, Owens, Dillburg, North Pickens Airport and
McShan.

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 3315 8810 3320 8822 3351 8816 3345 8788
TIME...MOT...LOC 2023Z 204DEG 31KT 3323 8816 

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

$$

32/Davis
032 
WWUS54 KBMX 312033
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
333 PM CDT THU AUG 31 2017

ALC107-312100-
/O.CON.KBMX.TO.W.0043.000000T0000Z-170831T2100Z/
Pickens AL-
333 PM CDT THU AUG 31 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 PM CDT FOR
NORTHEASTERN PICKENS COUNTY...
    
At 333 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Reform, 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...
Reform, Carrollton, Owens, North Pickens Airport and McShan. 

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 8803 3328 8817 3350 8813 3345 8788
TIME...MOT...LOC 2033Z 210DEG 38KT 3334 8806 

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

$$

32/Davis
470 
WWUS54 KBMX 312046
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
346 PM CDT THU AUG 31 2017

ALC107-312100-
/O.CON.KBMX.TO.W.0043.000000T0000Z-170831T2100Z/
Pickens AL-
346 PM CDT THU AUG 31 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 PM CDT FOR
NORTHEASTERN PICKENS COUNTY...
        
At 346 PM CDT, a confirmed tornado was located near Reform, moving
northeast at 35 mph.

HAZARD...Damaging tornado. 

SOURCE...Radar confirmed tornado. 

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...
Reform and North Pickens Airport. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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 3336 8795 3339 8813 3349 8808 3345 8788
TIME...MOT...LOC 2046Z 204DEG 31KT 3344 8800 

TORNADO...OBSERVED
HAIL...<.75IN

$$

32/Davis

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 30, 7:17 PM CDTSpecial Weather StatementBMXBullock58 min
Aug 30, 7:19 PM CDTSpecial Weather StatementBMXPike26 min
Aug 30, 7:50 PM CDTSpecial Weather StatementBMXBarbour70 min
Aug 31, 12:01 PM CDTSpecial Weather StatementBMXMarengo29 min
Aug 31, 2:49 PM CDTWind AdvisoryBMXAutauga, Bibb, Blount, Calhoun, Chambers, Cherokee and 29 more27 hr
Aug 31, 3:38 PM CDTTornado WarningBMXFayette, Lamar, Pickens52 min
Aug 31, 3:42 PM CDTTornado WarningBMXHale, Perry10 min
Aug 31, 4:12 PM CDTTornado Warning Tornado observedBMXFayette30 min
Aug 31, 4:23 PM CDTTornado WarningBMXFayette, Pickens, Tuscaloosa52 min
Aug 31, 4:26 PM CDTTornado Warning Tornado observedConsiderable damage threatBMXMarion, Winston35 min
Aug 31, 5:30 PM CDTTornado WarningBMXWinston23 min
Aug 31, 5:41 PM CDTSpecial Weather StatementBMXMarengo34 min
Aug 31, 6:07 PM CDTTornado WarningBMXHale38 min
Aug 31, 6:55 PM CDTTornado WarningBMXBibb65 min

Nearby

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