Alert archive / Mississippi / Tornado Warnings in 2014

Tornado Warning 4, NWS New Orleans, LA

February 20, 2014Walthall County, Mississippi

NWS New Orleans, LA issued this tornado warning at Feb 20, 2014, 7:12 PM CST for Walthall County, Mississippi. It was in force for 18 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 20, 2014, 7:12 PM CST (01:12 UTC)
Expired: Feb 20, 2014, 7:30 PM CST
In force: 18 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon

County Walthall County, MS

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Feb 20, 6:05 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 1.2 hours before the alert went out and 98 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: 1934 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 620 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 187 m²/s²
0-3 km storm-relative helicity: 183 m²/s²
Significant tornado parameter: 1.7
Supercell composite: 9.0

Open this sounding in Storm Lab

The text

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

689 
WFUS54 KLIX 210112
TORLIX
MSC147-210130-
/O.NEW.KLIX.TO.W.0004.140221T0112Z-140221T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
712 PM CST THU FEB 20 2014

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  WALTHALL COUNTY IN SOUTHERN MISSISSIPPI...

* UNTIL 730 PM CST

* AT 709 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR DEXTER...OR
  14 MILES NORTHEAST OF FRANKLINTON...MOVING NORTHEAST AT 25 MPH.

* THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
  INDICATED COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...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 100 AM CST FRIDAY MORNING FOR
SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

&&

LAT...LON 3117 9000 3114 9000 3114 8994 3108 8991
      3108 8984 3107 8983 3100 8991 3100 9012
      3103 9016 3118 9003
TIME...MOT...LOC 0112Z 221DEG 24KT 3104 9001

$$

1 follow-up statement

884 
WWUS54 KLIX 210130
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
730 PM CST THU FEB 20 2014

MSC147-210139-
/O.CAN.KLIX.TO.W.0004.000000T0000Z-140221T0130Z/
WALTHALL MS-
730 PM CST THU FEB 20 2014

...THE TORNADO WARNING FOR WALTHALL COUNTY IS CANCELLED...

THE STORM THAT PROMPTED THE TORNADO WARNING HAS MOVED EAST OF 
WALTHALL COUNTY. ADDITIONAL STORMS ARE EXPECTED THIS EVENING AND 
OVERNIGHT.  

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CST FRIDAY MORNING FOR
SOUTHEAST LOUISIANA AND SOUTHEASTERN MISSISSIPPI.

LAT...LON 3117 9000 3114 9000 3114 8994 3108 8991
      3108 8984 3107 8983 3100 8991 3100 9012
      3103 9016 3118 9003
TIME...MOT...LOC 0129Z 221DEG 24KT 3113 8992

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 20, 6:38 PM CST	Severe Thunderstorm Warning	LIX	Amite, Wilkinson	67 min
Feb 20, 6:44 PM CST	Severe Thunderstorm Warning	LIX	Walthall	31 min
Feb 20, 6:48 PM CST	Tornado Warning	LIX	Walthall	27 min
Feb 20, 6:57 PM CST	Severe Thunderstorm Warning	LIX	Amite, Pike	63 min
Feb 20, 7:41 PM CST	Severe Thunderstorm Warning	LIX	Pike, Walthall	64 min
Feb 20, 8:43 PM CST	Areal Flood Advisory	LIX	Amite, Pearl River, Pike, Walthall, Wilkinson	67 days
Feb 20, 9:46 PM CST	Tornado Warning	LIX	Walthall	14 min
Feb 20, 10:55 PM CST	Tornado Warning	LIX	Walthall	20 min
Feb 21, 4:27 AM CST	River Flood Warning	LIX	Pike	28 hr
Feb 21, 7:15 AM CST	River Flood Warning	LIX	Pike, Walthall	3 days
Feb 21, 10:01 AM CST	River Flood Warning	LIX	Pike, Walthall	33 hr

Nearby

Tornado Warnings in Mississippi, 2014 Every tornado warning in 2014 Tornadoes in 2014

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.