Alert archive / Alabama / Tornado Warnings in 2012

Tornado Warning 59, NWS Mobile, AL

August 30, 2012Wayne County, Mississippi; Choctaw County, Washington County, Alabama

NWS Mobile, AL issued this tornado warning at Aug 30, 2012, 8:10 AM CDT for Wayne County, Mississippi; Choctaw County, Washington County, Alabama. It was in force for 35 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: Aug 30, 2012, 8:10 AM CDT (13:10 UTC)
Expired: Aug 30, 2012, 8:45 AM CDT
In force: 35 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties Choctaw County, AL, Washington County, AL, Wayne County, MS

The radar

The Mobile radar (KMOB), 122 km from the middle of the area, began a volume at 13:11 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
Aug 30, 7:13 AM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 1.2 hours before the alert went out and 167 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: 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.

372 
WFUS54 KMOB 301310
TORMOB
ALC023-129-MSC153-301345-
/O.NEW.KMOB.TO.W.0059.120830T1310Z-120830T1345Z/

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

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN WAYNE COUNTY IN SOUTHEAST MISSISSIPPI...
  SOUTHWESTERN CHOCTAW COUNTY IN SOUTHWEST ALABAMA...
  NORTHWESTERN WASHINGTON COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 845 AM CDT

* AT 809 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 10 MILES WEST OF CHATOM...OR 6 MILES NORTHEAST
  OF STATE LINE...MOVING NORTH AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  RURAL NORTHEASTERN WAYNE COUNTY
  RURAL NORTHWESTERN WASHINGTON COUNTY
  RURAL SOUTHWESTERN CHOCTAW COUNTY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER...CALL (800) 284-9059.

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

&&

LAT...LON 3192 8836 3150 8831 3148 8849 3187 8861
      3190 8848
TIME...MOT...LOC 1311Z 171DEG 36KT 3156 8842

$$

1 follow-up statement

936 
WWUS54 KMOB 301337
SVSMOB

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

ALC023-129-MSC153-301347-
/O.EXP.KMOB.TO.W.0059.000000T0000Z-120830T1345Z/
CHOCTAW AL-WASHINGTON AL-WAYNE MS-
837 AM CDT THU AUG 30 2012

...THE TORNADO WARNING HAS BEEN ALLOWED TO EXPIRE FOR NORTHEASTERN
WAYNE...NORTHWESTERN WASHINGTON AND SOUTHWESTERN CHOCTAW COUNTIES...

AT 834 AM CDT...THE STORM THAT PROMPTED THE WARNING FOR NORTHEASTERN
WAYNE...NORTHWESTERN WASHINGTON AND SOUTHWESTERN CHOCTAW COUNTIES HAS
WEAKENED TO BELOW SEVERE LIMITS...THUS THE TORNADO WARNING WILL BE
ALLOWED TO EXPIRE AT 845 AM CDT.

TO REPORT SEVERE WEATHER...CALL (800) 284-9059.

ALTHOUGH THIS WARNING HAS EXPIRED...ADDITIONAL STORMS MAY DEVELOP
REQUIRING NEW WARNINGS.

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

LAT...LON 3192 8836 3150 8831 3148 8849 3187 8861
      3190 8848
TIME...MOT...LOC 1337Z 171DEG 36KT 3182 8847

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 29, 8:36 PM CDT	Flash Flood Warning	MOB	George, Greene, Perry, Stone	6 hr
Aug 29, 9:42 PM CDT	Tornado Warning	MOB	George, Greene, Perry	48 min
Aug 29, 10:20 PM CDT	River Flood Warning	MOB	George, Greene, Perry	9 days
Aug 29, 10:25 PM CDT	Tornado Warning	MOB	Greene, Perry, Wayne	26 min
Aug 29, 11:20 PM CDT	Flash Flood Warning	MOB	Greene, Perry, Wayne	6 hr
Aug 30, 12:52 AM CDT	Wind Advisory	MOB	George, Greene, Perry, Stone, Wayne	16 hr
Aug 30, 2:13 AM CDT	River Flood Warning	MOB	Perry	22 hr
Aug 30, 2:28 AM CDT	Areal Flood Warning	MOB	George, Greene, Perry, Stone	12 hr
Aug 30, 4:31 AM CDT	Tornado Warning	MOB	Greene, Wayne	29 min
Aug 30, 4:37 AM CDT	River Flood Warning	MOB	George, Greene, Wayne	9 days
Aug 30, 5:22 AM CDT	Tornado Warning	MOB	Wayne	23 min
Aug 30, 5:48 AM CDT	Tornado Warning	MOB	Greene, Wayne	27 min
Aug 30, 6:28 AM CDT	Tornado Warning	MOB	Wayne	30 min
Aug 30, 7:07 AM CDT	Flash Flood Warning Emergency	MOB	George	6 hr
Aug 30, 7:18 AM CDT	Flash Flood Warning	MOB	Wayne	6 hr
Aug 30, 7:23 AM CDT	Tornado Warning	MOB	Wayne	22 min
Aug 30, 7:41 AM CDT	Tornado Warning	MOB	George	33 min
Aug 30, 8:13 AM CDT	Tornado Warning	MOB	Greene, Wayne	32 min
Aug 30, 8:45 AM CDT	Tornado Warning	MOB	Greene, Wayne	45 min
Aug 30, 9:00 AM CDT	Flash Flood Warning Emergency	MOB	Greene	6 hr
Aug 30, 10:17 AM CDT	River Flood Warning	MOB	George, Greene, Jackson	9 days
Aug 30, 1:18 PM CDT	Areal Flood Warning	MOB	George, Greene, Perry, Stone, Wayne	20 hr
Aug 29, 7:27 PM CDT	Tornado Warning	MOB	Monroe, Wilcox	30 min
Aug 29, 7:29 PM CDT	Small Craft Advisory	MOB		33 hr
Aug 29, 7:45 PM CDT	Coastal Flood Warning	MOB		21 hr
Aug 30, 12:22 AM CDT	Flash Flood Warning	MOB	Mobile, Washington	6 hr
Aug 30, 2:46 AM CDT	Tornado Warning	MOB	Covington	33 min
Aug 30, 3:53 AM CDT	Tornado Warning	MOB	Covington, Escambia	37 min
Aug 30, 4:09 AM CDT	Tornado Warning	MOB	Butler, Crenshaw	16 min
Aug 30, 4:32 AM CDT	Tornado Warning	MOB	Covington	28 min
Aug 30, 6:43 AM CDT	Tornado Warning	MOB	Choctaw, Washington	37 min
Aug 30, 9:01 AM CDT	Tornado Warning	MOB	Mobile, Washington	44 min
Aug 30, 10:16 AM CDT	Tornado Warning	MOB	Choctaw, Washington	44 min
Aug 30, 10:56 AM CDT	Tornado Warning	MOB	Choctaw	49 min
Aug 30, 11:32 AM CDT	Severe Thunderstorm Warning	MOB	Mobile	43 min
Aug 30, 11:44 AM CDT	Flash Flood Warning	MOB	Mobile, Washington	6 hr
Aug 30, 11:56 AM CDT	Tornado Warning	MOB	Choctaw	33 min
Aug 30, 4:29 PM CDT	High Surf Advisory	MOB		20 hr

Nearby

Tornado Warnings in Alabama, 2012 Tornado Warnings in Mississippi, 2012 Every tornado warning in 2012 Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.