Alert archive / Mississippi / Tornado Warnings in 2012

Tornado Warning 92, NWS Jackson, MS

December 20, 2012Madison County, Mississippi

NWS Jackson, MS issued this tornado warning at Dec 20, 2012, 3:59 AM CST for Madison County, Mississippi. It was in force for 26 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 20, 2012, 3:59 AM CST (09:59 UTC)
Expired: Dec 20, 2012, 4:25 AM CST
In force: 26 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

County Madison County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 51 km from the middle of the area, began a volume at 10:03 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 20, 4:13 AM CST	TSTM WND DMG	Cameron, MS	SEVERAL TREES DOWN ACROSS ROADS AROUND THE CAMERON AREA.

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

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 10.0 hours before the alert went out and 47 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1606 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 206 m²/s²
0-3 km storm-relative helicity: 246 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

882 
WFUS54 KJAN 200959
TORJAN
MSC089-201045-
/O.NEW.KJAN.TO.W.0092.121220T0959Z-121220T1045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSON MS
359 AM CST THU DEC 20 2012

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN MADISON COUNTY IN CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITY OF CANTON...

* UNTIL 445 AM CST

* AT 359 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR WAY MOVING
  NORTHEAST AT 50 MPH.

* THE TORNADO WILL BE NEAR...
  WAY AND SHARON BY 405 AM CST...
  CAMDEN AND CAMERON BY 415 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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 AM CST
THURSDAY MORNING FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND
WESTERN MISSISSIPPI.

&&

LAT...LON 3255 9008 3268 9018 3269 9015 3269 9014
      3270 9013 3270 9010 3274 9005 3279 9002
      3283 9002 3288 8994 3289 8974 3288 8973
      3275 8973
TIME...MOT...LOC 0959Z 234DEG 42KT 3269 9005

$$

BK

3 follow-up statements

759 
WWUS54 KJAN 201006 RRA
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
406 AM CST THU DEC 20 2012

MSC089-201045-
/O.CON.KJAN.TO.W.0092.000000T0000Z-121220T1045Z/
MADISON MS-
406 AM CST THU DEC 20 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 AM CST FOR
NORTHEASTERN MADISON COUNTY...

AT 406 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUE TO
TRACK A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
TORNADO WAS LOCATED NEAR WAY MOVING NORTHEAST AT 55 MPH.

THE TORNADO WILL BE NEAR...
  CAMERON AND CAMDEN BY 415 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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 AM CST
THURSDAY MORNING FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND
WESTERN MISSISSIPPI.

&&

LAT...LON 3275 8973 3268 9000 3271 9007 3279 9002
      3283 9002 3283 9000 3285 8999 3288 8994
      3289 8978 3288 8973
TIME...MOT...LOC 1006Z 226DEG 48KT 3277 8997

$$

BK

939 
WWUS54 KJAN 201014 RRA
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
414 AM CST THU DEC 20 2012

MSC089-201045-
/O.CON.KJAN.TO.W.0092.000000T0000Z-121220T1045Z/
MADISON MS-
414 AM CST THU DEC 20 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 AM CST FOR
NORTHEASTERN MADISON COUNTY...

AT 414 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUE TO
TRACK A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
TORNADO WAS LOCATED NEAR CAMERON MOVING NORTHEAST AT 55 MPH.

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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 AM CST
THURSDAY MORNING FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND
WESTERN MISSISSIPPI.

&&

LAT...LON 3282 8975 3278 8979 3276 8989 3281 8995
      3288 8991 3289 8980 3289 8977 3288 8973
TIME...MOT...LOC 1014Z 230DEG 47KT 3282 8987

$$

BK

009 
WWUS54 KJAN 201025
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
425 AM CST THU DEC 20 2012

MSC089-201035-
/O.CAN.KJAN.TO.W.0092.000000T0000Z-121220T1045Z/
MADISON MS-
425 AM CST THU DEC 20 2012

...THE TORNADO WARNING FOR NORTHEASTERN MADISON COUNTY IS
CANCELLED...

THE STORM THAT PROMPTED THE TORNADO WARNING HAS MOVED OUT OF THE
COUNTY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST THURSDAY FOR
MISSISSIPPI.

LAT...LON 3282 8975 3278 8979 3276 8989 3281 8995
      3288 8991 3289 8980 3289 8977 3288 8973
TIME...MOT...LOC 1025Z 230DEG 47KT 3291 8974

$$

BK

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 20, 2:14 AM CST	Special Weather Statement	JAN	Kemper	31 min
Dec 20, 2:59 AM CST	Severe Thunderstorm Warning	JAN	Bolivar, Washington	76 min
Dec 20, 3:23 AM CST	Special Weather Statement	JAN	Madison	32 min
Dec 20, 3:42 AM CST	Severe Thunderstorm Warning	JAN	Issaquena, Sharkey, Warren	78 min
Dec 20, 3:45 AM CST	Severe Thunderstorm Warning	JAN	Humphreys, Leflore, Sunflower	45 min
Dec 20, 4:18 AM CST	Severe Thunderstorm Warning	JAN	Holmes, Yazoo	72 min
Dec 20, 4:22 AM CST	Tornado Warning	JAN	Attala, Leake	34 min
Dec 20, 4:25 AM CST	Severe Thunderstorm Warning	JAN	Carroll, Grenada, Leflore, Montgomery	80 min
Dec 20, 4:34 AM CST	Severe Thunderstorm Warning	JAN	Adams, Claiborne, Franklin, Jefferson	71 min
Dec 20, 4:48 AM CST	Severe Thunderstorm Warning	JAN	Hinds, Madison	57 min
Dec 20, 4:56 AM CST	Special Weather Statement	JAN	Simpson	29 min
Dec 20, 5:01 AM CST	Severe Thunderstorm Warning	JAN	Copiah	59 min
Dec 20, 5:08 AM CST	Severe Thunderstorm Warning	JAN	Attala, Choctaw, Webster	67 min
Dec 20, 5:16 AM CST	Severe Thunderstorm Warning	JAN	Leake, Rankin, Scott	74 min
Dec 20, 5:24 AM CST	Severe Thunderstorm Warning	JAN	Lincoln	66 min
Dec 20, 5:26 AM CST	Severe Thunderstorm Warning	JAN	Jasper, Smith	34 min
Dec 20, 5:27 AM CST	Severe Thunderstorm Warning	JAN	Marion	48 min
Dec 20, 5:38 AM CST	Tornado Warning	JAN	Marion	37 min
Dec 20, 5:44 AM CST	Severe Thunderstorm Warning	JAN	Jefferson Davis, Lawrence, Simpson	76 min
Dec 20, 5:53 AM CST	Severe Thunderstorm Warning	JAN	Clay, Oktibbeha, Winston	52 min
Dec 20, 5:56 AM CST	Special Weather Statement	JAN	Kemper, Noxubee	29 min
Dec 20, 5:58 AM CST	Severe Thunderstorm Warning	JAN	Neshoba, Newton	62 min
Dec 20, 5:59 AM CST	Severe Thunderstorm Warning	JAN	Covington, Lamar	46 min
Dec 20, 6:00 AM CST	Severe Thunderstorm Warning	JAN	Jasper, Smith	75 min
Dec 20, 6:17 AM CST	Severe Thunderstorm Warning	JAN	Lauderdale	43 min
Dec 20, 6:18 AM CST	Severe Thunderstorm Warning	JAN	Lamar, Marion	42 min
Dec 20, 6:20 AM CST	Severe Thunderstorm Warning	JAN	Lowndes, Noxubee	40 min
Dec 20, 6:23 AM CST	Severe Thunderstorm Warning	JAN	Covington, Jones	82 min
Dec 20, 6:33 AM CST	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale	57 min
Dec 20, 6:38 AM CST	Severe Thunderstorm Warning	JAN	Forrest	37 min
Dec 20, 6:48 AM CST	Severe Thunderstorm Warning	JAN	Lamar, Marion	57 min
Dec 20, 6:51 AM CST	Severe Thunderstorm Warning	JAN	Clarke, Lauderdale	54 min
Dec 20, 6:59 AM CST	Severe Thunderstorm Warning	JAN	Lowndes, Noxubee	19 min
Dec 20, 7:12 AM CST	Severe Thunderstorm Warning	JAN	Forrest	48 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.