Alert archive / Mississippi / Tornado Warnings in 2012

Tornado Warning 61, NWS Mobile, AL

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

NWS Mobile, AL issued this tornado warning at Aug 30, 2012, 8:45 AM CDT for Greene County, Wayne County, Mississippi; Choctaw County, Washington County, Alabama. It was in force for 45 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, 8:45 AM CDT (13:45 UTC)
Expired
Aug 30, 2012, 9:30 AM CDT
In force
45 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

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

The radar

The Mobile radar (KMOB), 117 km from the middle of the area, began a volume at 13:48 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 30, 7:13 AM CDTTornado WatchSPC9 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 1.8 hours before the alert went out and 163 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°0°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.

066 
WFUS54 KMOB 301345
TORMOB
ALC023-129-MSC041-153-301430-
/O.NEW.KMOB.TO.W.0061.120830T1345Z-120830T1430Z/

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

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 930 AM CDT

* AT 844 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 14 MILES SOUTHWEST OF CHATOM...OR 4 MILES
  NORTHWEST OF FRUITDALE...MOVING NORTH AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  WAYNESBORO...         STATE LINE...         BUCKATUNNA...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
STRONG ROTATION HAS BEEN DETECTED AND A TORNADO MAY ALREADY BE ON THE
GROUND...OR IS EXPECTED TO DEVELOP SHORTLY.

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 8840 3136 8839 3134 8857 3185 8869
      3186 8863
TIME...MOT...LOC 1345Z 177DEG 38KT 3138 8847

$$
1 follow-up statement
894 
WWUS54 KMOB 301432
SVSMOB

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

ALC023-129-MSC041-153-301443-
/O.EXP.KMOB.TO.W.0061.000000T0000Z-120830T1430Z/
CHOCTAW AL-WASHINGTON AL-WAYNE MS-GREENE MS-
932 AM CDT THU AUG 30 2012

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

AT 930 AM CDT...THE STORM THAT PROMPTED THE WARNING FOR NORTHEASTERN
GREENE...EASTERN WAYNE...NORTHWESTERN WASHINGTON AND SOUTHWESTERN
CHOCTAW COUNTIES HAS WEAKENED TO BELOW SEVERE LIMITS...THUS THE
TORNADO WARNING HAS BEEN ALLOWED TO EXPIRE.

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 8840 3136 8839 3134 8857 3185 8869
      3186 8863
TIME...MOT...LOC 1345Z 177DEG 38KT 3138 8847

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 29, 8:36 PM CDTFlash Flood WarningMOBGeorge, Greene, Perry, Stone6 hr
Aug 29, 9:42 PM CDTTornado WarningMOBGeorge, Greene, Perry48 min
Aug 29, 10:20 PM CDTRiver Flood WarningMOBGeorge, Greene, Perry9 days
Aug 29, 10:25 PM CDTTornado WarningMOBGreene, Perry, Wayne26 min
Aug 29, 11:20 PM CDTFlash Flood WarningMOBGreene, Perry, Wayne6 hr
Aug 30, 12:52 AM CDTWind AdvisoryMOBGeorge, Greene, Perry, Stone, Wayne16 hr
Aug 30, 2:13 AM CDTRiver Flood WarningMOBPerry22 hr
Aug 30, 2:28 AM CDTAreal Flood WarningMOBGeorge, Greene, Perry, Stone12 hr
Aug 30, 4:31 AM CDTTornado WarningMOBGreene, Wayne29 min
Aug 30, 4:37 AM CDTRiver Flood WarningMOBGeorge, Greene, Wayne9 days
Aug 30, 5:22 AM CDTTornado WarningMOBWayne23 min
Aug 30, 5:48 AM CDTTornado WarningMOBGreene, Wayne27 min
Aug 30, 6:28 AM CDTTornado WarningMOBWayne30 min
Aug 30, 7:07 AM CDTFlash Flood Warning EmergencyMOBGeorge6 hr
Aug 30, 7:18 AM CDTFlash Flood WarningMOBWayne6 hr
Aug 30, 7:23 AM CDTTornado WarningMOBWayne22 min
Aug 30, 7:41 AM CDTTornado WarningMOBGeorge33 min
Aug 30, 8:10 AM CDTTornado WarningMOBWayne35 min
Aug 30, 8:13 AM CDTTornado WarningMOBGreene, Wayne32 min
Aug 30, 9:00 AM CDTFlash Flood Warning EmergencyMOBGreene6 hr
Aug 30, 10:17 AM CDTRiver Flood WarningMOBGeorge, Greene, Jackson9 days
Aug 30, 1:18 PM CDTAreal Flood WarningMOBGeorge, Greene, Perry, Stone, Wayne20 hr
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, 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, 4:32 AM CDTTornado WarningMOBCovington28 min
Aug 30, 6:43 AM CDTTornado WarningMOBChoctaw, Washington37 min
Aug 30, 9:01 AM CDTTornado WarningMOBMobile, Washington44 min
Aug 30, 10:16 AM CDTTornado WarningMOBChoctaw, Washington44 min
Aug 30, 10:56 AM CDTTornado WarningMOBChoctaw49 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 Mississippi, 2012Tornado 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.