Alert archive / Mississippi / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 4, NWS New Orleans, LA

January 26, 2012Harrison County, Jackson County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Jan 26, 2012, 8:37 AM CST for Harrison County, Jackson County, Mississippi. It was in force for 53 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: Jan 26, 2012, 8:37 AM CST (14:37 UTC)
Expired: Jan 26, 2012, 9:30 AM CST
In force: 53 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon

Counties Harrison County, MS, Jackson County, MS

The radar

The Mobile radar (KMOB), 51 km from the middle of the area, began a volume at 14:38 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
Jan 26, 4:18 AM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 2.6 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-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: 1176 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 461 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 354 m²/s²
0-3 km storm-relative helicity: 359 m²/s²
Significant tornado parameter: 2.6
Supercell composite: 10.4

Open this sounding in Storm Lab

The text

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

549 
WUUS54 KLIX 261437
SVRLIX
MSC047-059-261530-
/O.NEW.KLIX.SV.W.0004.120126T1437Z-120126T1530Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
837 AM CST THU JAN 26 2012

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN HARRISON COUNTY IN SOUTHERN MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...GULFPORT...BILOXI...
  JACKSON COUNTY IN SOUTHERN MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...ST. MARTIN...PASCAGOULA...OCEAN
  SPRINGS...MOSS POINT...ESCATAWPA...

* UNTIL 930 AM CST

* AT 836 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING 
  FROM 18 MILES NORTH OF BILOXI TO 7 MILES NORTH OF BILOXI TO        
  GULFPORT...MOVING EAST AT 45 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO      
  GULF PARK ESTATES...VANCLEAVE...GAUTIER AND WADE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A SMALL INTERIOR ROOM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST THURSDAY FOR
SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

&&

LAT...LON 3035 8844 3032 8847 3032 8850 3034 8853
      3034 8858 3037 8859 3034 8873 3041 8885
      3038 8887 3036 8913 3050 8903 3068 8910
      3068 8889 3074 8888 3073 8841 3034 8840
TIME...MOT...LOC 1436Z 266DEG 38KT 3067 8899 3051 8893
          3043 8900

$$

7/ARM

1 follow-up statement

349 
WWUS54 KLIX 261503
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
903 AM CST THU JAN 26 2012

MSC047-261513-
/O.CAN.KLIX.SV.W.0004.000000T0000Z-120126T1530Z/
HARRISON MS-
903 AM CST THU JAN 26 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN HARRISON COUNTY IS
CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST THURSDAY FOR
SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

LAT...LON 3035 8844 3032 8847 3032 8850 3034 8853
      3034 8858 3037 8859 3034 8873 3041 8885
      3073 8885 3073 8841 3034 8840
TIME...MOT...LOC 1503Z 269DEG 33KT 3065 8874 3051 8873
          3041 8875

$$

MSC059-261530-
/O.CON.KLIX.SV.W.0004.000000T0000Z-120126T1530Z/
JACKSON MS-
903 AM CST THU JAN 26 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 AM CST
FOR JACKSON COUNTY...

AT 903 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 9 MILES NORTHWEST OF VANCLEAVE TO VANCLEAVE TO OCEAN
SPRINGS...OR ALONG A LINE EXTENDING FROM 16 MILES NORTHEAST OF ST.
MARTIN TO 8 MILES NORTH OF OCEAN SPRINGS TO OCEAN SPRINGS...MOVING
EAST AT 40 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
GAUTIER...WADE...ESCATAWPA...PASCAGOULA AND MOSS POINT

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A SMALL INTERIOR ROOM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST THURSDAY FOR
SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

&&

LAT...LON 3035 8844 3032 8847 3032 8850 3034 8853
      3034 8858 3037 8859 3034 8873 3041 8885
      3073 8885 3073 8841 3034 8840
TIME...MOT...LOC 1503Z 269DEG 33KT 3065 8874 3051 8873
          3041 8875

$$

7/ARM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 25, 7:45 PM CST	Flash Flood Watch	LIX	Amite, Pearl River, Pike, Walthall, Wilkinson	15 hr
Jan 25, 9:50 PM CST	Areal Flood Advisory	LIX	Amite, Wilkinson	224 days
Jan 26, 4:23 AM CST	Areal Flood Advisory	LIX	Walthall	112 min
Jan 26, 8:07 AM CST	Tornado Warning	LIX	Harrison	38 min
Jan 26, 9:24 AM CST	River Flood Warning	LIX	Hancock, Pearl River	6 days
Jan 26, 9:24 AM CST	River Flood Warning	LIX	Hancock, Pearl River, Pike, Walthall	6 days
Jan 26, 9:59 AM CST	River Flood Warning	LIX	Pike	29 hr
Jan 26, 10:24 AM CST	River Flood Warning	LIX	Hancock, Pearl River	8 days

Nearby

Severe Thunderstorm Warnings in Mississippi, 2012 Every severe thunderstorm warning 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.