Alert archive / Mississippi / Tornado Warnings in 2012

Tornado Warning 55, NWS Mobile, AL

August 30, 2012Wayne County, Mississippi

NWS Mobile, AL issued this tornado warning at Aug 30, 2012, 6:28 AM CDT for Wayne County, Mississippi. It was in force for 30 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, 6:28 AM CDT (11:28 UTC)
Expired
Aug 30, 2012, 6:58 AM CDT
In force
30 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

County Wayne County, MS

The radar

The Mobile radar (KMOB), 116 km from the middle of the area, began a volume at 11:29 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 29, 11:42 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 11.5 hours before the alert went out and 164 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 00:00Z on 2012-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 325 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 00:00Z on 2012-08-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 316 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
325 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
547 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
316 m²/s²
0-3 km storm-relative helicity
370 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.3

Open this sounding in Storm Lab

The text

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

557 
WFUS54 KMOB 301128
TORMOB
MSC153-301215-
/O.NEW.KMOB.TO.W.0055.120830T1128Z-120830T1215Z/

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

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN WAYNE COUNTY IN SOUTHEAST MISSISSIPPI...

* UNTIL 715 AM CDT

* AT 624 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 13 MILES SOUTHEAST OF WAYNESBORO...OR 4 MILES
  NORTHEAST OF BUCKATUNNA...MOVING NORTH AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  RURAL NORTHEASTERN WAYNE COUNTY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 AM CDT THURSDAY MORNING
FOR SOUTHWEST ALABAMA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3175 8847 3175 8846 3163 8846 3162 8846
      3154 8846 3153 8850 3184 8872 3190 8847
TIME...MOT...LOC 1128Z 165DEG 41KT 3161 8849

$$
1 follow-up statement
479 
WWUS54 KMOB 301158
SVSMOB

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

MSC153-301209-
/O.CAN.KMOB.TO.W.0055.000000T0000Z-120830T1215Z/
WAYNE MS-
658 AM CDT THU AUG 30 2012

...THE TORNADO WARNING HAS BEEN CANCELLED FOR NORTHEASTERN WAYNE
COUNTY...

AT 659 AM CDT...THE STORM THAT PROMPTED THE WARNING FOR NORTHEASTERN
WAYNE COUNTY HAS WEAKENED TO BELOW SEVERE LIMITS...THUS THE TORNADO
WARNING HAS BEEN CANCELLED.

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

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 AM CDT THURSDAY MORNING
FOR SOUTHWEST ALABAMA AND SOUTHEAST MISSISSIPPI.

LAT...LON 3175 8847 3175 8846 3163 8846 3162 8846
      3154 8846 3153 8850 3184 8872 3190 8847
TIME...MOT...LOC 1159Z 165DEG 41KT 3195 8860

$$

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, 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, 8:45 AM CDTTornado WarningMOBGreene, Wayne45 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

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.