Alert archive / Mississippi / Special Weather Statements in 2012

Special Weather Statement, NWS Jackson, MS

December 16, 20127 counties in Mississippi

NWS Jackson, MS issued this special weather statement at Dec 16, 2012, 2:19 PM CST for 7 counties in Mississippi. It was in force for 61 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 16, 2012, 2:19 PM CST (20:19 UTC)
Expired: Dec 16, 2012, 3:20 PM CST
In force: 61 min
Issued by: NWS Jackson, MS

Counties Covington County, MS, Forrest County, MS, Jasper County, MS, Jefferson Davis County, MS, Jones County, MS, Lamar County, MS, Marion County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 114 km from the middle of the area, began a volume at 20:21 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 nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.3 hours before the alert went out and 121 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: 4 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 440 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 171 m²/s²
0-3 km storm-relative helicity: 262 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jackson, MS wrote its last area forecast discussion before this special weather statement went out at Dec 16, 10:58 AM CST, 3 hours 21 minutes earlier.

Area forecast discussion, Dec 16, 10:58 AM CST, 3 hours 21 minutes before

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Hazardous weather outlook, Dec 16, 5:29 AM CST, 8 hours 50 minutes before

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In the hours before

Special weather statement, Dec 16, 9:33 AM CST, 4 hours 46 minutes before

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Special weather statement, Dec 16, 10:24 AM CST, 3 hours 55 minutes before

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Special weather statement, Dec 16, 11:46 AM CST, 2 hours 33 minutes before

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Special weather statement, Dec 16, 12:07 PM CST, 2 hours 12 minutes before

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Special weather statement, Dec 16, 1:11 PM CST, 1 hour 8 minutes before

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Special weather statement, Dec 16, 2:19 PM CST, 0 minutes before

MSZ051-055>058-063>066-072>074-162120-
SMITH MS-SIMPSON MS-NEWTON MS-MARION MS-LAWRENCE MS-LAMAR MS-JONES MS-
JEFFERSON DAVIS MS-JASPER MS-FORREST MS-COVINGTON MS-CLARKE MS-
219 PM CST SUN DEC 16 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
219 PM CST SUN DEC 16 2012

A LINE OF HEAVY THUNDERSTORMS CAPABLE OF PRODUCING 30 TO 40 MPH
WINDS WAS LOCATED FROM 3 MILES WEST OF ORANGE TO 5 MILES WEST OF
KOKOMO AT 218 PM CST...MOVING EAST AT 35 MPH.

ONE TO TWO INCHES OF RAINFALL WILL BE POSSIBLE RESULTING IN
CONSIDERABLE PONDING OF WATER ON ROADS. MOTORISTS SHOULD ALLOW FOR
EXTRA TIME AND BE ALERT FOR BLINDING WIND-DRIVEN RAIN.

DANGEROUS CLOUD TO GROUND LIGHTNING IS ALSO POSSIBLE WITH THESE
STORMS.

PEOPLE IN WEST CENTRAL CLARKE...COVINGTON...NORTHWESTERN FORREST...
JASPER...JEFFERSON DAVIS...JONES...LAMAR...SOUTHEASTERN LAWRENCE...
MARION...EXTREME SOUTH CENTRAL NEWTON...SOUTHEASTERN SIMPSON AND
SOUTHERN SMITH COUNTIES SHOULD MONITOR THESE STORMS CLOSELY.

LAT...LON 3098 8935 3100 8935 3100 8942 3109 8994
      3112 8995 3113 9001 3124 9005 3132 9005
      3135 9011 3177 8987 3224 8903 3215 8880
      3143 8910 3143 8914 3136 8913 3097 8930
TIME...MOT...LOC 2018Z 286DEG 30KT 3208 8895 3162 8927
          3154 8988 3120 9007

MRM

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 16, 12:56 AM CST	Special Weather Statement	JAN	Bolivar	29 min
Dec 16, 10:24 AM CST	Special Weather Statement	JAN	Claiborne, Copiah, Hinds, Rankin, Scott	76 min
Dec 16, 11:46 AM CST	Special Weather Statement	JAN	Clarke, Jasper, Lauderdale, Newton, Simpson, Smith	74 min
Dec 16, 12:07 PM CST	Special Weather Statement	JAN	Jefferson Davis, Lawrence, Lincoln	73 min
Dec 16, 1:11 PM CST	Special Weather Statement	JAN	Covington, Jasper, Jefferson Davis, Jones, Lawrence, Lincoln and 1 more	59 min
Dec 16, 4:33 PM CST	Special Weather Statement	JAN	Attala, Carroll, Grenada, Holmes, Leflore, Montgomery and 1 more	57 min
Dec 16, 5:41 PM CST	Special Weather Statement	JAN	Attala, Choctaw, Clay, Lowndes, Noxubee, Oktibbeha and 2 more	59 min
Dec 16, 8:04 AM CST	Special Weather Statement	JAN	Franklin	26 min
Dec 16, 8:43 AM CST	Special Weather Statement	JAN	Madison	32 min
Dec 16, 9:01 AM CST	Special Weather Statement	JAN	Catahoula	39 min
Dec 16, 9:33 AM CST	Special Weather Statement	JAN	Franklin	42 min
Dec 16, 1:49 AM CST	Special Weather Statement	JAN	Ashley	41 min

Nearby

Special Weather Statements in Mississippi, 2012 Every special weather statement 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.