Alert archive / Mississippi / Tornado Warnings in 2012

Tornado Warning 90, NWS Jackson, MS

December 10, 2012Smith County, Mississippi

NWS Jackson, MS issued this tornado warning at Dec 10, 2012, 6:14 AM CST for Smith County, Mississippi. It was in force for 20 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, 6:14 AM CST (12:14 UTC)
Expired: Dec 10, 2012, 6:34 AM CST
In force: 20 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

County Smith County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 49 km from the middle of the area, began a volume at 12:13 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, 0.2 hours before the alert went out and 59 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.

951 
WFUS54 KJAN 101214
TORJAN
MSC129-101315-
/O.NEW.KJAN.TO.W.0090.121210T1214Z-121210T1315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSON MS
614 AM CST MON DEC 10 2012

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN SMITH COUNTY IN CENTRAL MISSISSIPPI...

* UNTIL 715 AM CST

* AT 614 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR WHITE OAK
  MOVING NORTHEAST AT 35 MPH.

* THE TORNADO WILL BE NEAR...
  WHITE OAK BY 620 AM CST...
  RALEIGH BY 630 AM CST...
  BURNS BY 635 AM CST...
  PINEVILLE BY 650 AM CST...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WARNING MEANS THAT A TORNADO IS OCCURRING OR IMMINENT. YOU
SHOULD ACTIVATE YOUR TORNADO ACTION PLAN AND TAKE PROTECTIVE ACTION
NOW.

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

&&

LAT...LON 3207 8933 3201 8951 3197 8965 3204 8966
      3205 8973 3209 8973 3222 8953 3222 8932
      3215 8932
TIME...MOT...LOC 1214Z 241DEG 32KT 3201 8973

$$

JA

1 follow-up statement

822 
WWUS54 KJAN 101234
SVSJAN

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

MSC129-101245-
/O.CAN.KJAN.TO.W.0090.000000T0000Z-121210T1315Z/
SMITH MS-
634 AM CST MON DEC 10 2012

...THE TORNADO WARNING FOR NORTHERN SMITH COUNTY IS CANCELLED...

THE STORM THAT PROMPTED THE TORNADO WARNING HAS WEAKENED.

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

LAT...LON 3207 8933 3201 8951 3197 8965 3204 8966
      3205 8973 3209 8973 3222 8953 3222 8932
      3215 8932
TIME...MOT...LOC 1235Z 241DEG 32KT 3210 8954

$$

JA

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, 6:43 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, 8:45 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

Tornado Warnings in Mississippi, 2012 Every tornado warning in 2012 Tornadoes 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.