Alert archive / Mississippi / Tornado Warnings in 2012

Tornado Warning 40, NWS Mobile, AL

August 29, 2012George County, Perry County, Stone County, Mississippi

NWS Mobile, AL issued this tornado warning at Aug 29, 2012, 7:51 AM CDT for George County, Perry County, Stone County, Mississippi. It was in force for 39 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 29, 2012, 7:51 AM CDT (12:51 UTC)
Expired
Aug 29, 2012, 8:30 AM CDT
In force
39 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties George County, MS, Perry County, MS, Stone County, MS

The radar

The Mobile radar (KMOB), 78 km from the middle of the area, began a volume at 12:52 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.

IssuedProductOfficeLasted
Aug 28, 6:47 PM CDTTornado WatchSPC21 hr
Aug 29, 6:36 AM CDTTornado WatchSPC9 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 0.9 hours before the alert went out and 106 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, Slidell Radar S, LA at 12:00Z on 2012-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 625 joules per kilogram.LCLEL10008507005003002001001 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, Slidell Radar S, LA at 12:00Z on 2012-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 298 square meters per square second.19395878Sfc1 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
625 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
465 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
298 m²/s²
0-3 km storm-relative helicity
338 m²/s²
Significant tornado parameter
0.9
Supercell composite
8.7

Open this sounding in Storm Lab

The text

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

727 
WFUS54 KMOB 291251
TORMOB
MSC039-111-131-291330-
/O.NEW.KMOB.TO.W.0040.120829T1251Z-120829T1330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
751 AM CDT WED AUG 29 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN GEORGE COUNTY IN SOUTHEAST MISSISSIPPI...
  SOUTHERN PERRY COUNTY IN SOUTHEAST MISSISSIPPI...
  NORTHEASTERN STONE COUNTY IN SOUTHEAST MISSISSIPPI...

* UNTIL 830 AM CDT

* AT 747 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 15 MILES NORTHWEST OF ESCATAWPA...OR 6 MILES
  NORTHWEST OF WADE...MOVING NORTHWEST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  RURAL SOUTHWESTERN GEORGE COUNTY
  RURAL SOUTHERN PERRY COUNTY
  RURAL NORTHEASTERN STONE COUNTY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CDT WEDNESDAY
AFTERNOON FOR SOUTHWEST ALABAMA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3123 8915 3073 8859 3073 8884 3095 8915
TIME...MOT...LOC 1250Z 133DEG 58KT 3072 8869

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 28, 11:46 PM CDTAreal Flood AdvisoryMOBGeorge119 min
Aug 29, 5:33 AM CDTTornado WarningMOBGeorge, Stone27 min
Aug 29, 8:46 AM CDTFlash Flood WarningMOBGeorge, Greene, Perry, Stone6 hr
Aug 29, 9:36 AM CDTTornado WarningMOBGeorge, Greene, Perry39 min
Aug 29, 10:18 AM CDTWind AdvisoryMOBGeorge, Greene, Perry, Stone14 hr
Aug 29, 12:35 PM CDTTornado WarningMOBGreene, Perry, Wayne40 min
Aug 29, 1:17 PM CDTTornado WarningMOBGreene, Perry, Wayne36 min
Aug 29, 1:27 PM CDTTornado WarningMOBStone48 min
Aug 29, 2:52 PM CDTFlash Flood WarningMOBGeorge, Greene, Perry, Stone6 hr

Nearby

Tornado Warnings in Mississippi, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.