Alert archive / Mississippi / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 596, NWS Jackson, MS

December 10, 2012Forrest County, Lamar County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Dec 10, 2012, 8:45 AM CST for Forrest County, Lamar County, Mississippi. It was in force for 45 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Dec 10, 2012, 8:45 AM CST (14:45 UTC)
Expired: Dec 10, 2012, 9:30 AM CST
In force: 45 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

Counties Forrest County, MS, Lamar County, MS

The radar

The Mobile radar (KMOB), 126 km from the middle of the area, began a volume at 14:48 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.

What was reported inside it

Time	Report	Where	Remark
Dec 10, 9:15 AM CST	TSTM WND DMG	3 Nw Hattiesburg, MS	TREE DOWNED ON I-59 BETWEEN US 49 AND HARDY STREET

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 10, 5:44 AM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 2.8 hours before the alert went out and 119 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: 767 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 488 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 237 m²/s²
0-3 km storm-relative helicity: 263 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 7.9

Open this sounding in Storm Lab

The text

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

481 
WUUS54 KJAN 101445
SVRJAN
MSC035-073-101530-
/O.NEW.KJAN.SV.W.0596.121210T1445Z-121210T1530Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
845 AM CST MON DEC 10 2012

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN FORREST COUNTY IN SOUTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...PETAL...HATTIESBURG...
  CENTRAL LAMAR COUNTY IN SOUTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITY OF WEST HATTIESBURG...

* UNTIL 930 AM CST

* AT 845 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 8 MILES
  NORTHWEST OF BAXTERVILLE MOVING EAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  PURVIS BY 905 AM CST...
  WEST HATTIESBURG BY 910 AM CST...
  HATTIESBURG BY 915 AM CST...
  MCLAURIN BY 920 AM CST...
  SUNRISE AND PETAL BY 925 AM CST...
  MACEDONIA BY 930 AM CST...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WINDS OF 60 MPH CAN BRING DOWN TREES...POSSIBLY RESULTING IN INJURY
AND PROPERTY DAMAGE. ROOFS OF MOBILE HOMES AND OUTBUILDINGS COULD BE
DAMAGED...AND MINOR ROOF DAMAGE TO WELL BUILT HOMES AND STRUCTURES
COULD OCCUR.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES. 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 BASEMENT OR SMALL INTERIOR ROOM.

THIS STORM HAS A HISTORY OF PRODUCING WIND DAMAGE. SEEK SHELTER 
NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!

&&

LAT...LON 3144 8916 3118 8915 3106 8966 3129 8965
TIME...MOT...LOC 1445Z 252DEG 35KT 3119 8964

$$

40

2 follow-up statements

227 
WWUS54 KJAN 101507
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
907 AM CST MON DEC 10 2012

MSC035-073-101530-
/O.CON.KJAN.SV.W.0596.000000T0000Z-121210T1530Z/
LAMAR MS-FORREST MS-
907 AM CST MON DEC 10 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 AM CST
FOR NORTHERN FORREST AND CENTRAL LAMAR COUNTIES...

AT 907 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES
SOUTHWEST OF WEST HATTIESBURG MOVING EAST AT 45 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  HATTIESBURG BY 915 AM CST...
  MCLAURIN BY 920 AM CST...
  PETAL AND SUNRISE BY 925 AM CST...
  MACEDONIA BY 930 AM CST...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WINDS OF 60 MPH CAN BRING DOWN TREES...POSSIBLY RESULTING IN INJURY
AND PROPERTY DAMAGE. ROOFS OF MOBILE HOMES AND OUTBUILDINGS COULD BE
DAMAGED...AND MINOR ROOF DAMAGE TO WELL BUILT HOMES AND STRUCTURES
COULD OCCUR.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES. 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.

THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WINDS. SEEK 
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 AM CST MONDAY MORNING
FOR SOUTHEASTERN MISSISSIPPI.

&&

LAT...LON 3109 8956 3132 8955 3144 8918 3144 8916
      3118 8915
TIME...MOT...LOC 1507Z 249DEG 38KT 3128 8943

$$

40

174 
WWUS54 KJAN 101533
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
933 AM CST MON DEC 10 2012

MSC035-073-101542-
/O.EXP.KJAN.SV.W.0596.000000T0000Z-121210T1530Z/
LAMAR MS-FORREST MS-
933 AM CST MON DEC 10 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN FORREST AND CENTRAL
LAMAR COUNTIES HAS EXPIRED...

AT 930 AM THE STORM HAD WEAKENED BELOW SEVERE LIMITS OVER PETAL 
MOVING NORTHEAST AT 45 MPH. TORRENTIAL RAINS AND LIGHTNING STRIKES
ARE STILL LIKELY IN THE HATTIESBURG AREA THROUGH 10 AM.

THE WARNING HAS BEEN ALLOWED TO EXPIRE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 AM CST MONDAY MORNING
FOR SOUTHEASTERN MISSISSIPPI.

LAT...LON 3109 8956 3132 8955 3143 8918 3144 8916
      3118 8915
TIME...MOT...LOC 1507Z 246DEG 33KT 3128 8942

$$

40

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 9, 11:00 PM CST	Special Weather Statement	JAN	Humphreys, Issaquena, Sharkey, Washington	40 min
Dec 9, 11:24 PM CST	Special Weather Statement	JAN	Holmes, Humphreys, Yazoo	46 min
Dec 10, 12:49 AM CST	Special Weather Statement	JAN	Attala, Choctaw, Clay, Oktibbeha, Webster, Winston	61 min
Dec 10, 12:54 AM CST	Severe Thunderstorm Warning	JAN	Webster	25 min
Dec 10, 1:48 AM CST	Special Weather Statement	JAN	Lowndes	42 min
Dec 10, 3:43 AM CST	Special Weather Statement	JAN	Franklin	32 min
Dec 10, 3:55 AM CST	Tornado Warning	JAN	Franklin	38 min
Dec 10, 4:29 AM CST	Tornado Warning	JAN	Lincoln	31 min
Dec 10, 5:03 AM CST	Special Weather Statement	JAN	Adams	32 min
Dec 10, 5:06 AM CST	Severe Thunderstorm Warning	JAN	Adams	25 min
Dec 10, 5:07 AM CST	Tornado Warning	JAN	Copiah	23 min
Dec 10, 5:23 AM CST	Severe Thunderstorm Warning	JAN	Franklin, Jefferson	37 min
Dec 10, 5:27 AM CST	Tornado Warning	JAN	Simpson	63 min
Dec 10, 6:14 AM CST	Tornado Warning	JAN	Smith	20 min
Dec 10, 6:43 AM CST	Special Weather Statement	JAN	Simpson	32 min
Dec 10, 6:52 AM CST	Severe Thunderstorm Warning	JAN	Simpson, Smith	68 min
Dec 10, 6:55 AM CST	Special Weather Statement	JAN	Lawrence	40 min
Dec 10, 7:09 AM CST	Severe Thunderstorm Warning	JAN	Jefferson Davis, Lawrence, Marion	51 min
Dec 10, 7:36 AM CST	Special Weather Statement	JAN	Jasper	29 min
Dec 10, 7:41 AM CST	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis	44 min
Dec 10, 8:06 AM CST	Special Weather Statement	JAN	Lauderdale	29 min
Dec 10, 8:14 AM CST	Tornado Warning	JAN	Marion	40 min
Dec 10, 8:16 AM CST	Severe Thunderstorm Warning	JAN	Jones	44 min
Dec 10, 8:32 AM CST	Special Weather Statement	JAN	Lauderdale	58 min
Dec 10, 8:39 AM CST	Severe Thunderstorm Warning	JAN	Clarke, Lauderdale	40 min
Dec 10, 8:58 AM CST	Special Weather Statement	JAN	Clarke	42 min
Dec 10, 9:08 AM CST	Special Weather Statement	JAN	Clarke	32 min
Dec 10, 9:10 AM CST	Special Weather Statement	JAN	Jones	45 min
Dec 10, 9:20 AM CST	Severe Thunderstorm Warning	JAN	Forrest, Jones	40 min
Dec 10, 9:31 AM CST	Special Weather Statement	JAN	Forrest	44 min
Dec 10, 10:09 AM CST	Special Weather Statement	JAN	Forrest	26 min

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.