Alert archive / Mississippi / Tornado Warnings in 2012

Tornado Warning 107, NWS New Orleans, LA

December 25, 2012Hancock County, Harrison County, Pearl River County, Mississippi

NWS New Orleans, LA issued this tornado warning at Dec 25, 2012, 3:45 PM CST for Hancock County, Harrison County, Pearl River 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: Dec 25, 2012, 3:45 PM CST (21:45 UTC)
Expired: Dec 25, 2012, 4:15 PM CST
In force: 30 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon

Counties Hancock County, MS, Harrison County, MS, Pearl River County, MS

The radar

The Mobile radar (KMOB), 102 km from the middle of the area, began a volume at 21:45 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.

Issued	Product	Office	Lasted
Dec 25, 12:58 PM CST	Tornado Watch PDS	SPC	9 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 9.8 hours before the alert went out and 57 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 790 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 576 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 181 m²/s²
0-3 km storm-relative helicity: 237 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 10.0

Open this sounding in Storm Lab

The text

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

268 
WFUS54 KLIX 252145
TORLIX
MSC045-047-109-252215-
/O.NEW.KLIX.TO.W.0107.121225T2145Z-121225T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
345 PM CST TUE DEC 25 2012

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN HANCOCK COUNTY IN SOUTHERN MISSISSIPPI...
  NORTHERN HARRISON COUNTY IN SOUTHERN MISSISSIPPI...
  SOUTHEASTERN PEARL RIVER COUNTY IN SOUTHERN MISSISSIPPI...
  THIS INCLUDES THE CITY OF PICAYUNE...

* UNTIL 415 PM CST

* AT 341 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR PICAYUNE...
  MOVING NORTHEAST AT 55 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  SAUCIER

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT USE HIGHWAY OVERPASSES FOR SHELTER. OVERPASSES DO NOT PROVIDE
PROTECTION FROM TORNADIC WINDS. VEHICLES STOPPED UNDER BRIDGES BLOCK
TRAFFIC AND PREVENT PEOPLE FROM GETTING OUT OF THE STORM'S PATH AND
TO SHELTER. IF YOU CANNOT DRIVE AWAY FROM THE TORNADO...GET OUT OF
YOUR VEHICLE AND LIE FLAT IN A DITCH AS A LAST RESORT.

THE SAFEST PLACE TO BE DURING A TORNADO IS UNDER A WORKBENCH OR OTHER
PIECE OF STURDY FURNITURE. SEEK SHELTER ON THE LOWEST FLOOR OF THE
BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE
BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM
WINDOWS.

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

PLEASE FOLLOW OUR OFFICE ON BOTH FACEBOOK AND TWITTER FOR MORE
INFORMATION ON SEVERE WEATHER AND TO RELAY WEATHER REPORTS AND
PHOTOS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CST TUESDAY EVENING
FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

&&

LAT...LON 3065 8933 3065 8925 3067 8924 3069 8923
      3068 8896 3055 8897 3047 8968 3058 8972
      3078 8934
TIME...MOT...LOC 2145Z 243DEG 47KT 3055 8961

$$

1 follow-up statement

823 
WWUS54 KLIX 252205
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
405 PM CST TUE DEC 25 2012

MSC045-047-109-252215-
/O.CON.KLIX.TO.W.0107.000000T0000Z-121225T2215Z/
PEARL RIVER MS-HANCOCK MS-HARRISON MS-
405 PM CST TUE DEC 25 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CST FOR
NORTHWESTERN HARRISON...NORTHEASTERN HANCOCK AND EAST CENTRAL PEARL
RIVER COUNTIES...

AT 401 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS 
STORM WAS LOCATED OVER PEARL RIVER COUNTY...14 MILES SOUTH OF 
POPLARVILLE...MOVING NORTHEAST AT 50 MPH.

THE SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO WILL OTHERWISE
REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS UNDER A WORKBENCH OR OTHER
PIECE OF STURDY FURNITURE. SEEK SHELTER ON THE LOWEST FLOOR OF THE
BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE
BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM
WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL 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 800 PM CST TUESDAY EVENING 
FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

&&

LAT...LON 3065 8933 3065 8925 3069 8923 3069 8916
      3055 8944 3068 8953 3078 8934
TIME...MOT...LOC 2205Z 239DEG 43KT 3068 8941

$$

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 24, 8:34 PM CST	Dense Fog Advisory	LIX		9 hr
Dec 25, 1:45 PM CST	Severe Thunderstorm Warning	LIX	Amite, Wilkinson	60 min
Dec 25, 1:48 PM CST	Severe Thunderstorm Warning	LIX	Amite	27 min
Dec 25, 1:52 PM CST	Tornado Warning	LIX	Wilkinson	53 min
Dec 25, 1:59 PM CST	Tornado Warning	LIX	Wilkinson	46 min
Dec 25, 2:30 PM CST	Tornado Warning	LIX	Amite	45 min
Dec 25, 2:38 PM CST	Tornado Warning	LIX	Wilkinson	37 min
Dec 25, 2:54 PM CST	Tornado Warning	LIX	Pearl River	36 min
Dec 25, 3:29 PM CST	Tornado Warning	LIX	Pearl River	22 min
Dec 25, 3:47 PM CST	Tornado Warning	LIX	Walthall	28 min
Dec 25, 3:54 PM CST	Severe Thunderstorm Warning	LIX	Walthall	66 min
Dec 25, 4:01 PM CST	Severe Thunderstorm Warning	LIX	Hancock, Harrison	44 min
Dec 25, 4:47 PM CST	Severe Thunderstorm Warning	LIX	Pearl River	58 min

Nearby

Tornado Warnings in Mississippi, 2012 Every tornado warning in 2012 Tornadoes 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.