Alert archive / Mississippi / Tornado Warnings in 2012

Tornado Warning 6, NWS Mobile, AL

February 18, 2012George County, Stone County, Mississippi

NWS Mobile, AL issued this tornado warning at Feb 18, 2012, 1:17 PM CST for George County, Stone County, Mississippi. It was in force for 13 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
Feb 18, 2012, 1:17 PM CST (19:17 UTC)
Expired
Feb 18, 2012, 1:30 PM CST
In force
13 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties George County, MS, Stone County, MS

The radar

The Mobile radar (KMOB), 63 km from the middle of the area, began a volume at 19:18 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
Feb 18, 11:49 AM CSTTornado WatchSPC5 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 7.3 hours before the alert went out and 99 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 2012-02-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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 2012-02-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 160 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
449 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
160 m²/s²
0-3 km storm-relative helicity
177 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

152 
WFUS54 KMOB 181917
TORMOB
MSC039-131-181930-
/O.NEW.KMOB.TO.W.0006.120218T1917Z-120218T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
117 PM CST SAT FEB 18 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN GEORGE COUNTY IN SOUTHEAST MISSISSIPPI...
  EASTERN STONE COUNTY IN SOUTHEAST MISSISSIPPI...

* UNTIL 130 PM CST

* AT 117 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES
  SOUTHEAST OF WIGGINS...OR 3 MILES EAST OF PERKINSTON...MOVING EAST
  AT 55 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BIG LEVEL...          RUBLE...              DALE...
  WLOX TV STATION TOWER...                    RAMSEY SPRINGS...
  BEATRICE...           BENNDALE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

IF IN MANUFACTURED HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 PM CST SATURDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

&&

LAT...LON 3094 8879 3073 8873 3073 8877 3073 8888
      3072 8888 3071 8910 3081 8912
TIME...MOT...LOC 1917Z 257DEG 47KT 3078 8904

$$

JP/MB

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 18, 9:48 AM CSTRiver Flood WarningMOBGeorge, Greene, Perry6 days
Feb 18, 9:48 AM CSTRiver Flood WarningMOBGeorge, Greene, Wayne6 days
Feb 18, 12:39 PM CSTSevere Thunderstorm WarningMOBPerry, Stone51 min
Feb 18, 1:13 PM CSTSevere Thunderstorm WarningMOBGeorge, Stone47 min
Feb 18, 1:35 PM CSTAreal Flood AdvisoryMOBPerry, Stone115 min
Feb 18, 1:36 PM CSTTornado WarningMOBGeorge, Greene39 min
Feb 18, 1:56 PM CSTSevere Thunderstorm WarningMOBGeorge49 min
Feb 18, 2:28 PM CSTFlash Flood WarningMOBGeorge, Greene, Perry, Stone32 days
Feb 18, 4:05 PM CSTAreal Flood WarningMOBGeorge, Greene, Perry, Stone, Wayne34 days
Feb 18, 4:30 PM CSTFlash Flood WarningMOBGeorge, Greene, Perry60 min

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.