Alert archive / Alabama / Tornado Warnings in 2012

Tornado Warning 64, NWS Mobile, AL

August 30, 2012Choctaw County, Alabama

NWS Mobile, AL issued this tornado warning at Aug 30, 2012, 10:56 AM CDT for Choctaw County, Alabama. It was in force for 49 min. 1 report 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 30, 2012, 10:56 AM CDT (15:56 UTC)
Expired
Aug 30, 2012, 11:45 AM CDT
In force
49 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

County Choctaw County, AL

The radar

The Mobile radar (KMOB), 148 km from the middle of the area, began a volume at 15:58 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 30, 10:58 AM CDTTORNADO1 E Toxey, ALDOWNED AND SNAPPED TREES REPORTED NEAR THE TOWN OF TOXEY.

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 30, 7:13 AM CDTTornado WatchSPC9 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 3.9 hours before the alert went out and 176 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, Jackson, MS at 12:00Z on 2012-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 107 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, Jackson, MS at 12:00Z on 2012-08-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 473 square meters per square second.1939587897Sfc1 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
107 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
501 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
473 m²/s²
0-3 km storm-relative helicity
650 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

504 
WFUS54 KMOB 301556
TORMOB
ALC023-301645-
/O.NEW.KMOB.TO.W.0064.120830T1556Z-120830T1645Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1056 AM CDT THU AUG 30 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL AND NORTHERN CHOCTAW COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 1145 AM CDT

* AT 1054 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 17 MILES SOUTH OF BUTLER...OR 2 MILES SOUTHEAST
  OF GILBERTOWN...MOVING NORTH AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  TOXEY...              NEEDHAM...            LISMAN...
  GILBERTOWN...         BUTLER...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF A STURDY BUILDING.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CDT THURSDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

&&

LAT...LON 3181 8819 3182 8838 3231 8838 3231 8810
TIME...MOT...LOC 1556Z 185DEG 31KT 3187 8829

$$
2 follow-up statements
706 
WWUS54 KMOB 301613
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1113 AM CDT THU AUG 30 2012

ALC023-301645-
/O.CON.KMOB.TO.W.0064.000000T0000Z-120830T1645Z/
CHOCTAW AL-
1113 AM CDT THU AUG 30 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1145 AM CDT FOR NORTHERN
CHOCTAW COUNTY...

AT 1111 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
 WAS LOCATED 5 MILES SOUTHWEST OF BUTLER...OR 5 MILES NORTHEAST OF
NEEDHAM...MOVING NORTH AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
  NEEDHAM...            LISMAN...             BUTLER...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF A STURDY BUILDING.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CDT THURSDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

&&

LAT...LON 3196 8819 3196 8836 3231 8838 3231 8810
TIME...MOT...LOC 1613Z 179DEG 40KT 3206 8828

$$
074 
WWUS54 KMOB 301644
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1144 AM CDT THU AUG 30 2012

ALC023-301654-
/O.EXP.KMOB.TO.W.0064.000000T0000Z-120830T1645Z/
CHOCTAW AL-
1144 AM CDT THU AUG 30 2012

...THE TORNADO WARNING HAS BEEN ALLOWED TO EXPIRE FOR NORTHERN
CHOCTAW COUNTY...

AT 1144 AM CDT...THE STORM THAT PROMPTED THE WARNING FOR NORTHERN
CHOCTAW COUNTY HAS WEAKENED TO BELOW SEVERE LIMITS...THUS THE TORNADO
WARNING WILL BE ALLOWED TO EXPIRE AT 1145 AM CDT.

ALTHOUGH THIS WARNING HAS EXPIRED...ADDITIONAL STORMS MAY DEVELOP 
REQUIRING NEW WARNINGS FOR PORTIONS OF CHOCTAW COUNTY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CDT THURSDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

LAT...LON 3196 8819 3196 8836 3231 8838 3231 8810
TIME...MOT...LOC 1644Z 179DEG 40KT 3240 8829

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 29, 7:27 PM CDTTornado WarningMOBMonroe, Wilcox30 min
Aug 29, 7:29 PM CDTSmall Craft AdvisoryMOB33 hr
Aug 29, 7:45 PM CDTCoastal Flood WarningMOB21 hr
Aug 30, 12:22 AM CDTFlash Flood WarningMOBMobile, Washington6 hr
Aug 30, 12:52 AM CDTWind AdvisoryMOBWashington16 hr
Aug 30, 2:28 AM CDTAreal Flood WarningMOBMobile, Washington12 hr
Aug 30, 2:46 AM CDTTornado WarningMOBCovington33 min
Aug 30, 3:53 AM CDTTornado WarningMOBCovington, Escambia37 min
Aug 30, 4:09 AM CDTTornado WarningMOBButler, Crenshaw16 min
Aug 30, 4:31 AM CDTTornado WarningMOBWashington29 min
Aug 30, 4:32 AM CDTTornado WarningMOBCovington28 min
Aug 30, 6:43 AM CDTTornado WarningMOBChoctaw, Washington37 min
Aug 30, 7:41 AM CDTTornado WarningMOBMobile33 min
Aug 30, 8:10 AM CDTTornado WarningMOBChoctaw, Washington35 min
Aug 30, 8:13 AM CDTTornado WarningMOBWashington32 min
Aug 30, 8:45 AM CDTTornado WarningMOBChoctaw, Washington45 min
Aug 30, 9:01 AM CDTTornado WarningMOBMobile, Washington44 min
Aug 30, 10:16 AM CDTTornado WarningMOBChoctaw, Washington44 min
Aug 30, 11:32 AM CDTSevere Thunderstorm WarningMOBMobile43 min
Aug 30, 11:44 AM CDTFlash Flood WarningMOBMobile, Washington6 hr
Aug 30, 11:56 AM CDTTornado WarningMOBChoctaw33 min
Aug 30, 4:29 PM CDTHigh Surf AdvisoryMOB20 hr

Nearby

Tornado Warnings in Alabama, 2012Every tornado warning in 2012Tornadoes in 2012

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.