Alert archive / Mississippi / Tornado Warnings in 2012

Tornado Warning 60, NWS New Orleans, LA

August 29, 2012Harrison County, Mississippi

NWS New Orleans, LA issued this tornado warning at Aug 29, 2012, 3:48 PM CDT for Harrison County, Mississippi. It was in force for 27 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
Aug 29, 2012, 3:48 PM CDT (20:48 UTC)
Expired
Aug 29, 2012, 4:15 PM CDT
In force
27 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon

County Harrison County, MS

The radar

The Mobile radar (KMOB), 88 km from the middle of the area, began a volume at 20:48 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
Aug 28, 6:47 PM CDTTornado WatchSPC21 hr
Aug 29, 6:36 AM CDTTornado WatchSPC9 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.8 hours before the alert went out and 62 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 2012-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 625 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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 2012-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 298 square meters per square second.19395878Sfc1 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
625 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
465 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
298 m²/s²
0-3 km storm-relative helicity
338 m²/s²
Significant tornado parameter
0.9
Supercell composite
8.7

Open this sounding in Storm Lab

The text

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

960 
WFUS54 KLIX 292048
TORLIX
MSC047-292115-
/O.NEW.KLIX.TO.W.0060.120829T2048Z-120829T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
348 PM CDT WED AUG 29 2012

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  HARRISON COUNTY IN SOUTHERN MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...LONG BEACH...GULFPORT...

* UNTIL 415 PM CDT

* AT 342 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A 
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR            
  GULFPORT...MOVING NORTH AT 50 MPH.

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

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CDT WEDNESDAY
AFTERNOON FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

&&

LAT...LON 3038 8901 3032 8923 3065 8934 3065 8925
      3067 8924 3069 8923 3068 8906 3040 8893
TIME...MOT...LOC 2048Z 161DEG 42KT 3037 8908

$$


DUNN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 28, 9:21 PM CDTRiver Flood WarningLIXPike, Walthall4 days
Aug 28, 9:37 PM CDTRiver Flood WarningLIXHancock, Pearl River11 days
Aug 28, 9:43 PM CDTRiver Flood WarningLIXHancock, Pearl River13 days
Aug 28, 9:47 PM CDTRiver Flood WarningLIXPearl River5 days
Aug 28, 9:53 PM CDTRiver Flood WarningLIXPearl River4 days
Aug 28, 9:58 PM CDTRiver Flood WarningLIXJackson6 days
Aug 28, 10:13 PM CDTRiver Flood WarningLIXHarrison4 days
Aug 29, 3:06 AM CDTTornado WarningLIXJackson24 min
Aug 29, 4:09 AM CDTTornado WarningLIXJackson21 min
Aug 29, 4:39 AM CDTFlash Flood WarningLIXJackson3 hr
Aug 29, 4:52 AM CDTTornado WarningLIXHancock, Harrison23 min
Aug 29, 4:55 AM CDTTornado WarningLIXJackson20 min
Aug 29, 5:18 AM CDTTornado WarningLIXJackson27 min
Aug 29, 5:36 AM CDTTornado WarningLIXJackson24 min
Aug 29, 6:20 AM CDTTornado WarningLIXHarrison25 min
Aug 29, 8:58 AM CDTTornado WarningLIXHancock, Harrison17 min
Aug 29, 9:15 AM CDTTornado WarningLIXHancock, Pearl River11 min
Aug 29, 10:49 AM CDTTornado WarningLIXHancock, Harrison, Pearl River26 min
Aug 29, 12:20 PM CDTTornado WarningLIXHancock, Harrison, Pearl River25 min
Aug 29, 12:28 PM CDTTornado WarningLIXHarrison32 min
Aug 29, 1:00 PM CDTTornado WarningLIXHarrison30 min
Aug 29, 1:20 PM CDTFlash Flood WarningLIXHarrison3 hr
Aug 29, 1:51 PM CDTFlash Flood WarningLIXPearl River, Walthall3 hr
Aug 29, 4:15 PM CDTFlash Flood WarningLIXHarrison4 hr
Aug 29, 4:44 PM CDTFlash Flood WarningLIXPearl River, Walthall3 hr
Aug 29, 5:14 PM CDTTornado WarningLIXHarrison31 min
Aug 29, 6:30 PM CDTTornado WarningLIXHarrison30 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.