Alert archive / Mississippi / Tornado Warnings in 2012

Tornado Warning 13, NWS New Orleans, LA

February 18, 2012Harrison County, Mississippi

NWS New Orleans, LA issued this tornado warning at Feb 18, 2012, 2:17 PM CST for Harrison County, Mississippi. It was in force for 28 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, 2:17 PM CST (20:17 UTC)
Expired: Feb 18, 2012, 2:45 PM CST
In force: 28 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon

County Harrison County, MS

The radar

The Mobile radar (KMOB), 75 km from the middle of the area, began a volume at 20:18 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.

Issued	Product	Office	Lasted
Feb 18, 9:55 AM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.3 hours before the alert went out and 74 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: 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.

122 
WFUS54 KLIX 182017
TORLIX
MSC047-182045-
/O.NEW.KLIX.TO.W.0013.120218T2017Z-120218T2045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
217 PM CST SAT FEB 18 2012

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN HARRISON COUNTY IN SOUTHERN MISSISSIPPI...

* UNTIL 245 PM CST

* AT 213 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR LYMAN...OR
  11 MILES NORTH OF LONG BEACH...MOVING EAST AT 45 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 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 300 PM CST SATURDAY AFTERNOON
FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

&&

LAT...LON 3049 8888 3046 8919 3056 8920 3068 8889
TIME...MOT...LOC 2017Z 250DEG 41KT 3053 8912

$$

CAB

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 18, 8:49 AM CST	River Flood Warning	LIX	Pike	36 hr
Feb 18, 9:30 AM CST	River Flood Warning	LIX	Pearl River	26 hr
Feb 18, 9:34 AM CST	River Flood Warning	LIX	Pearl River	57 hr
Feb 18, 12:12 PM CST	Severe Thunderstorm Warning	LIX	Hancock, Pearl River	63 min
Feb 18, 12:21 PM CST	Tornado Warning	LIX	Pearl River	54 min
Feb 18, 12:26 PM CST	Tornado Warning	LIX	Pearl River	41 min
Feb 18, 12:54 PM CST	Tornado Warning	LIX	Pearl River	14 min
Feb 18, 12:56 PM CST	Severe Thunderstorm Warning	LIX	Harrison	49 min
Feb 18, 1:27 PM CST	Severe Thunderstorm Warning	LIX	Hancock, Pearl River	63 min
Feb 18, 1:33 PM CST	Severe Thunderstorm Warning	LIX	Jackson	21 min
Feb 18, 1:49 PM CST	Severe Thunderstorm Warning	LIX	Hancock, Harrison	41 min
Feb 18, 1:50 PM CST	Tornado Warning	LIX	Hancock, Harrison	40 min
Feb 18, 2:25 PM CST	Severe Thunderstorm Warning	LIX	Hancock, Harrison	65 min
Feb 18, 3:41 PM CST	River Flood Warning	LIX	Pike, Walthall	42 hr
Feb 18, 3:46 PM CST	Tornado Warning	LIX	Jackson	29 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.