Alert archive / Mississippi / Tornado Warnings in 2011

Tornado Warning 213, NWS Jackson, MS

November 16, 2011Jefferson Davis County, Mississippi

NWS Jackson, MS issued this tornado warning at Nov 16, 2011, 3:45 AM CST for Jefferson Davis County, Mississippi. It was in force for 45 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: Nov 16, 2011, 3:45 AM CST (09:45 UTC)
Expired: Nov 16, 2011, 4:30 AM CST
In force: 45 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

County Jefferson Davis County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 82 km from the middle of the area, began a volume at 09:48 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Nov 16, 2:20 AM CST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 9.8 hours before the alert went out and 88 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: 287 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 921 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 89 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

919 
WFUS54 KJAN 160945
TORJAN
MSC065-161030-
/O.NEW.KJAN.TO.W.0213.111116T0945Z-111116T1030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSON MS
345 AM CST WED NOV 16 2011

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL JEFFERSON DAVIS COUNTY IN SOUTH CENTRAL MISSISSIPPI...

* UNTIL 430 AM CST

* AT 346 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR PROGRESS
  MOVING NORTHEAST AT 35 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  PRENTISS AND CARSON

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 1000 AM CST WEDNESDAY MORNING
FOR EASTERN MISSISSIPPI.

&&

LAT...LON 3145 8996 3152 8996 3153 8997 3155 8998
      3174 8975 3161 8975 3156 8967
TIME...MOT...LOC 0946Z 228DEG 30KT 3152 8992

$$

BYB

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 16, 1:20 AM CST	Special Weather Statement	JAN	Neshoba	60 min
Nov 16, 1:44 AM CST	Special Weather Statement	JAN	Kemper, Lauderdale, Noxubee	61 min
Nov 16, 2:16 AM CST	Special Weather Statement	JAN	Jefferson Davis	44 min
Nov 16, 2:54 AM CST	Tornado Warning	JAN	Covington, Jefferson Davis	66 min
Nov 16, 3:20 AM CST	Tornado Warning	JAN	Lawrence, Marion	25 min
Nov 16, 3:49 AM CST	Severe Thunderstorm Warning	JAN	Jefferson Davis, Lawrence, Marion	26 min
Nov 16, 3:51 AM CST	Tornado Warning	JAN	Smith	23 min
Nov 16, 3:51 AM CST	Tornado Warning	JAN	Jefferson Davis, Lawrence, Marion	24 min
Nov 16, 4:12 AM CST	Tornado Warning	JAN	Covington	48 min
Nov 16, 4:16 AM CST	Tornado Warning	JAN	Covington, Jefferson Davis, Lamar, Marion	44 min
Nov 16, 4:38 AM CST	Tornado Warning	JAN	Smith	35 min
Nov 16, 4:55 AM CST	Tornado Warning	JAN	Jones	38 min
Nov 16, 5:22 AM CST	Tornado Warning	JAN	Jasper	38 min
Nov 16, 5:25 AM CST	Tornado Warning	JAN	Lamar	20 min
Nov 16, 5:47 AM CST	Tornado Warning	JAN	Clarke	43 min
Nov 16, 6:32 AM CST	Tornado Warning	JAN	Clarke, Lauderdale	28 min
Nov 16, 5:34 PM CST	Special Weather Statement	JAN	Clarke	46 min

Nearby

Tornado Warnings in Mississippi, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.