Alert archive / Mississippi / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 593, NWS Jackson, MS

December 10, 2012Covington County, Jefferson Davis County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Dec 10, 2012, 7:41 AM CST for Covington County, Jefferson Davis County, Mississippi. It was in force for 44 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: Dec 10, 2012, 7:41 AM CST (13:41 UTC)
Expired: Dec 10, 2012, 8:25 AM CST
In force: 44 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

Counties Covington County, MS, Jefferson Davis County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 86 km from the middle of the area, began a volume at 13:42 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
Dec 10, 5:44 AM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 1.7 hours before the alert went out and 94 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: 64 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 443 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 188 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

318 
WUUS54 KJAN 101341
SVRJAN
MSC031-065-101445-
/O.NEW.KJAN.SV.W.0593.121210T1341Z-121210T1445Z/

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

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN JEFFERSON DAVIS COUNTY IN SOUTH CENTRAL MISSISSIPPI...
  COVINGTON COUNTY IN SOUTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITY OF COLLINS...

* UNTIL 845 AM CST

* AT 740 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 9 MILES WEST OF MELBA TO MOUNT OLIVE MOVING EAST AT 35 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  MOUNT OLIVE BY 745 AM CST...
  MELBA BY 750 AM CST...
  COLLINS BY 755 AM CST...
  COLLINS BY 800 AM CST...
  SANFORD BY 815 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.

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

&&

LAT...LON 3143 8977 3177 8978 3180 8940 3143 8940
TIME...MOT...LOC 1340Z 261DEG 30KT 3147 8977 3174 8969

$$

19

2 follow-up statements

466 
WWUS54 KJAN 101404
SVSJAN

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

MSC065-101414-
/O.CAN.KJAN.SV.W.0593.000000T0000Z-121210T1445Z/
JEFFERSON DAVIS MS-
804 AM CST MON DEC 10 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN JEFFERSON DAVIS COUNTY
IS CANCELLED...

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

LAT...LON 3179 8958 3179 8952 3180 8940 3148 8940
      3143 8940 3143 8959
TIME...MOT...LOC 1404Z 237DEG 50KT 3155 8949 3169 8944
          3181 8942

$$

MSC031-101445-
/O.CON.KJAN.SV.W.0593.000000T0000Z-121210T1445Z/
COVINGTON MS-
804 AM CST MON DEC 10 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 AM CST
FOR EASTERN COVINGTON COUNTY...

AT 804 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM SEMINARY TO COLLINS TO 11 MILES NORTHEAST OF COLLINS MOVING
NORTHEAST AT 55 MPH.

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.

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

&&

LAT...LON 3179 8958 3179 8952 3180 8940 3148 8940
      3143 8940 3143 8959
TIME...MOT...LOC 1404Z 237DEG 50KT 3155 8949 3169 8944
          3181 8942

$$

19

436 
WWUS54 KJAN 101425
SVSJAN

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

MSC031-101435-
/O.CAN.KJAN.SV.W.0593.000000T0000Z-121210T1445Z/
COVINGTON MS-
825 AM CST MON DEC 10 2012

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

THE STORM THAT PROMPTED THE SEVERE THUNDERSTORM WARNING HAS MOVED OUT
OF THE COUNTY.

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

LAT...LON 3179 8958 3178 8952 3180 8940 3148 8940
      3143 8940 3143 8959
TIME...MOT...LOC 1425Z 221DEG 23KT 3164 8942 3171 8946

$$

19

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, 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, 8:45 AM CST	Severe Thunderstorm Warning	JAN	Forrest, Lamar	45 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.