Alert archive / Mississippi / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 21, NWS Mobile, AL

February 24, 2012Greene County, Perry County, Wayne County, Mississippi; Washington County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Feb 24, 2012, 8:06 AM CST for Greene County, Perry County, Wayne County, Mississippi; Washington County, Alabama. It was in force for 39 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
Feb 24, 2012, 8:06 AM CST (14:06 UTC)
Expired
Feb 24, 2012, 8:45 AM CST
In force
39 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

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

The radar

The Mobile radar (KMOB), 81 km from the middle of the area, began a volume at 14:08 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
Feb 24, 8:28 AM CSTTSTM WND DMG3 Se Old Avera, MSNUMEROUS PINE TREES WERE SNAPPED AND ARE BLOCKING THE ROADS APPROXIMATELY FIVE MILES SOUTH OF STATE LINE...MS.

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
Feb 24, 7:48 AM CSTTornado WatchSPC7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 2.1 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, Slidell Radar S, LA at 12:00Z on 2012-02-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 738 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, Slidell Radar S, LA at 12:00Z on 2012-02-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 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
738 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
462 m above ground
0-6 km bulk shear
74 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
68 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

364 
WUUS54 KMOB 241406
SVRMOB
ALC129-MSC041-111-153-241445-
/O.NEW.KMOB.SV.W.0021.120224T1406Z-120224T1445Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
806 AM CST FRI FEB 24 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN GREENE COUNTY IN SOUTHEAST MISSISSIPPI...
  EAST CENTRAL PERRY COUNTY IN SOUTHEAST MISSISSIPPI...
  SOUTHEASTERN WAYNE COUNTY IN SOUTHEAST MISSISSIPPI...
  CENTRAL WASHINGTON COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 845 AM CST

* AT 803 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 9 MILES SOUTHEAST OF RICHTON...
  OR 9 MILES NORTHEAST OF BEAUMONT...AND MOVING EAST AT 60 MPH.

* LOCATIONS IMPACTED INCLUDE...
  HOBSON...             STATE LINE...         BEAUMONT...
  WAGARVILLE...         VINEGAR BEND...       TIBBIE...
  FRUITDALE...          CHATOM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 PM CST FRIDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3161 8810 3136 8797 3108 8896 3131 8898
TIME...MOT...LOC 1407Z 251DEG 53KT 3128 8875

$$
1 follow-up statement
643 
WUUS54 KMOB 241410 CCA
SVRMOB
ALC129-MSC041-111-153-241445-
/O.COR.KMOB.SV.W.0021.120224T1406Z-120224T1445Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTED
NATIONAL WEATHER SERVICE MOBILE AL
806 AM CST FRI FEB 24 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN GREENE COUNTY IN SOUTHEAST MISSISSIPPI...
  EAST CENTRAL PERRY COUNTY IN SOUTHEAST MISSISSIPPI...
  SOUTHEASTERN WAYNE COUNTY IN SOUTHEAST MISSISSIPPI...
  CENTRAL WASHINGTON COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 845 AM CST

* AT 803 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS  
  OF 60 MPH. GOLF BALL SIZED HAIL HAS BEEN REPORTED WITH THIS STORM. 
  THIS STORM WAS LOCATED 9 MILES SOUTHEAST OF RICHTON...  OR 9 
  MILES NORTHEAST OF BEAUMONT...AND MOVING EAST AT 60 MPH.

* LOCATIONS IMPACTED INCLUDE...
  HOBSON...             STATE LINE...         BEAUMONT...
  WAGARVILLE...         VINEGAR BEND...       TIBBIE...
  FRUITDALE...          CHATOM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 PM CST FRIDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3161 8810 3136 8797 3108 8896 3131 8898
TIME...MOT...LOC 1407Z 251DEG 53KT 3128 8875

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 24, 7:41 AM CSTSevere Thunderstorm WarningMOBGreene, Perry, Wayne49 min
Feb 24, 8:51 AM CSTSevere Thunderstorm WarningMOBClarke, Monroe, Washington39 min
Feb 24, 9:20 AM CSTTornado WarningMOBClarke, Conecuh, Monroe40 min
Feb 24, 9:30 AM CSTSevere Thunderstorm WarningMOBClarke, Wilcox30 min
Feb 24, 9:35 AM CSTTornado WarningMOBWilcox25 min
Feb 24, 9:52 AM CSTSevere Thunderstorm WarningMOBButler, Conecuh, Crenshaw, Monroe, Wilcox38 min
Feb 24, 10:13 AM CSTTornado WarningMOBButler, Crenshaw32 min
Feb 24, 10:35 AM CSTSpecial Marine WarningMOB40 min
Feb 24, 11:15 AM CSTSpecial Marine WarningMOB60 min
Feb 24, 11:26 AM CSTSpecial Marine WarningMOB19 min
Feb 24, 12:17 PM CSTSpecial Marine WarningMOB58 min
Feb 24, 2:08 PM CSTRed Flag WarningMOBButler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more26 hr

Nearby

Severe Thunderstorm Warnings in Mississippi, 2012Severe Thunderstorm Warnings in Alabama, 2012Every severe thunderstorm warning 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.