Alert archive / Mississippi / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 39, NWS Jackson, MS

February 24, 20114 counties in Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Feb 24, 2011, 8:09 PM CST for 4 counties in Mississippi. It was in force for 66 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: Feb 24, 2011, 8:09 PM CST (02:09 UTC)
Expired: Feb 24, 2011, 9:15 PM CST
In force: 66 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

Counties Issaquena County, MS, Sharkey County, MS, Warren County, MS, Yazoo County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 68 km from the middle of the area, began a volume at 02:10 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
Feb 24, 8:40 PM CST	TSTM WND DMG	Yazoo City, MS	SEVERAL TREES AND POWER LINES DOWNED ACROSS YAZOO COUNTY. SOME TREES WERE BLOCKING ROADWAYS. SOME MINOR TREE FIRES WERE REPORTED AS A RESULT OF DAMAGED UTILITY LINES. SEVERAL POWER OUTAGES ACROSS THE AREA.

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

The watch it was issued in

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

Issued	Product	Office	Lasted
Feb 24, 2:34 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 2.2 hours before the alert went out and 58 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: 58 J/kg
Mixed-layer CIN: -104 J/kg
Mixed-layer LCL: 1389 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 251 m²/s²
0-3 km storm-relative helicity: 420 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

320 
WUUS54 KJAN 250209
SVRJAN
MSC055-125-149-163-250315-
/O.NEW.KJAN.SV.W.0039.110225T0209Z-110225T0315Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
809 PM CST THU FEB 24 2011

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  YAZOO COUNTY IN CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITY OF YAZOO CITY...
  SOUTHEASTERN ISSAQUENA COUNTY IN WEST CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITY OF VALLEY PARK...
  SOUTHERN SHARKEY COUNTY IN WEST CENTRAL MISSISSIPPI...
  NORTHEASTERN WARREN COUNTY IN WEST CENTRAL MISSISSIPPI...

* UNTIL 915 PM CST

* AT 809 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS
  WERE LOCATED ALONG A LINE EXTENDING FROM 19 MILES NORTH OF HOLLY
  BLUFF TO 11 MILES WEST OF VALLEY PARK MOVING EAST AT 50 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  PHOENIX...TINSLEY...LITTLE YAZOO...BENTON...MIDWAY...MYRLEVILLE AND
  VAUGHAN

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WINDS OF 70 MPH CAN SERIOUSLY DAMAGE MOBILE HOMES AND OUTBUILDINGS...
AND CAUSE ROOF DAMAGE TO WELL BUILT HOMES AND STRUCTURES. NUMEROUS
DOWNED TREES MAY OCCUR...POSSIBLY RESULTING IN SERIOUS INJURY AND
PROPERTY DAMAGE.

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE 
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY 
AWAY FROM WINDOWS!

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY 
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

&&

LAT...LON 3256 9106 3262 9099 3265 9101 3297 9083
      3292 9065 3291 9002 3288 8996 3283 9001
      3275 9004 3269 9013 3266 9028 3258 9039
      3259 9044 3254 9048 3251 9056 3249 9092
TIME...MOT...LOC 0209Z 269DEG 43KT 3310 9067 3259 9100

$$

BK

3 follow-up statements

736 
WWUS54 KJAN 250250
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
850 PM CST THU FEB 24 2011

MSC055-125-250300-
/O.CAN.KJAN.SV.W.0039.000000T0000Z-110225T0315Z/
SHARKEY MS-ISSAQUENA MS-
850 PM CST THU FEB 24 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ISSAQUENA AND
SOUTHERN SHARKEY COUNTIES IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CST THURSDAY EVENING
FOR NORTHEAST LOUISIANA AND NORTHWESTERN MISSISSIPPI. A TORNADO WATCH
ALSO REMAINS IN EFFECT UNTIL 200 AM CST FRIDAY MORNING FOR
NORTHEASTERN MISSISSIPPI.

LAT...LON 3264 9069 3268 9068 3268 9066 3270 9067
      3292 9055 3291 9002 3288 8996 3283 9001
      3275 9004 3269 9013 3266 9028 3258 9040
      3259 9044 3254 9048 3251 9056 3250 9078
TIME...MOT...LOC 0250Z 269DEG 43KT 3311 9008 3260 9042

$$

MSC149-163-250315-
/O.CON.KJAN.SV.W.0039.000000T0000Z-110225T0315Z/
WARREN MS-YAZOO MS-
850 PM CST THU FEB 24 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CST
FOR YAZOO AND NORTHEASTERN WARREN COUNTIES...

AT 850 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS
IN EXCESS OF 70 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 16 MILES NORTH OF MIDWAY TO 6 MILES EAST OF PHOENIX
MOVING EAST AT 50 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
MYRLEVILLE AND VAUGHAN

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WINDS OF 70 MPH CAN SERIOUSLY DAMAGE MOBILE HOMES AND OUTBUILDINGS...
AND CAUSE ROOF DAMAGE TO WELL BUILT HOMES AND STRUCTURES. NUMEROUS
DOWNED TREES MAY OCCUR...POSSIBLY RESULTING IN SERIOUS INJURY AND
PROPERTY DAMAGE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CST THURSDAY EVENING
FOR NORTHEAST LOUISIANA AND NORTHWESTERN MISSISSIPPI. A TORNADO WATCH
ALSO REMAINS IN EFFECT UNTIL 200 AM CST FRIDAY MORNING FOR
NORTHEASTERN MISSISSIPPI.

&&

LAT...LON 3264 9069 3268 9068 3268 9066 3270 9067
      3292 9055 3291 9002 3288 8996 3283 9001
      3275 9004 3269 9013 3266 9028 3258 9040
      3259 9044 3254 9048 3251 9056 3250 9078
TIME...MOT...LOC 0250Z 269DEG 43KT 3311 9008 3260 9042

$$

DHB

351 
WWUS54 KJAN 250300
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
900 PM CST THU FEB 24 2011

MSC149-163-250315-
/O.CON.KJAN.SV.W.0039.000000T0000Z-110225T0315Z/
WARREN MS-YAZOO MS-
900 PM CST THU FEB 24 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CST
FOR YAZOO AND NORTHEASTERN WARREN COUNTIES...

AT 859 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS
IN EXCESS OF 70 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 18 MILES NORTHEAST OF MIDWAY TO BENTONIA MOVING EAST 
AT 50 MPH. LAW ENFORCEMENT HAS REPORTED THAT TREES AND POWER LINES 
WERE DOWNED IN THE CITY OF YAZOO CITY WHEN THIS STORM WENT THROUGH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO VAUGHAN

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WINDS OF 70 MPH CAN SERIOUSLY DAMAGE MOBILE HOMES AND OUTBUILDINGS...
AND CAUSE ROOF DAMAGE TO WELL BUILT HOMES AND STRUCTURES. NUMEROUS
DOWNED TREES MAY OCCUR...POSSIBLY RESULTING IN SERIOUS INJURY AND
PROPERTY DAMAGE.

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS!

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM CST FRIDAY MORNING FOR
NORTHEASTERN MISSISSIPPI.

&&

LAT...LON 3264 9069 3268 9068 3268 9066 3270 9067
      3292 9055 3291 9002 3288 8996 3283 9001
      3275 9004 3269 9013 3266 9028 3258 9040
      3259 9044 3254 9048 3251 9056 3250 9078
TIME...MOT...LOC 0259Z 269DEG 43KT 3310 8995 3260 9029

$$

BK

776 
WWUS54 KJAN 250312
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
912 PM CST THU FEB 24 2011

MSC149-163-250323-
/O.EXP.KJAN.SV.W.0039.000000T0000Z-110225T0315Z/
WARREN MS-YAZOO MS-
912 PM CST THU FEB 24 2011

...THE SEVERE THUNDERSTORM WARNING FOR YAZOO AND NORTHEASTERN WARREN
COUNTIES WILL EXPIRE AT 915 PM CST...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM CST FRIDAY MORNING FOR
NORTHEASTERN MISSISSIPPI.

LAT...LON 3264 9069 3268 9068 3268 9066 3270 9067
      3292 9055 3291 9002 3288 8996 3283 9001
      3275 9004 3269 9013 3266 9028 3258 9040
      3259 9044 3254 9048 3251 9056 3250 9078
TIME...MOT...LOC 0313Z 269DEG 43KT 3310 8975 3260 9009

$$

BK

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 24, 6:56 PM CST	Severe Thunderstorm Warning	JAN	Bolivar, Sunflower, Washington	64 min
Feb 24, 7:27 PM CST	Severe Thunderstorm Warning	JAN	Issaquena, Sharkey	63 min
Feb 24, 7:40 PM CST	Severe Thunderstorm Warning	JAN	Carroll, Grenada, Holmes, Humphreys, Leflore, Sunflower and 1 more	65 min
Feb 24, 7:40 PM CST	Tornado Warning	JAN	Issaquena, Sharkey, Washington	40 min
Feb 24, 8:06 PM CST	Tornado Warning	JAN	Holmes, Humphreys, Yazoo	39 min
Feb 24, 8:22 PM CST	Severe Thunderstorm Warning	JAN	Carroll, Grenada, Holmes, Montgomery	38 min
Feb 24, 8:42 PM CST	Severe Thunderstorm Warning	JAN	Attala, Holmes, Yazoo	63 min
Feb 24, 8:54 PM CST	Severe Thunderstorm Warning	JAN	Carroll, Choctaw, Clay, Montgomery, Oktibbeha, Webster and 1 more	66 min
Feb 24, 9:00 PM CST	Severe Thunderstorm Warning	JAN	Leake, Madison	75 min
Feb 24, 9:08 PM CST	Tornado Warning	JAN	Attala, Choctaw, Winston	30 min
Feb 24, 9:42 PM CST	Severe Thunderstorm Warning	JAN	Hinds, Madison, Rankin, Scott	33 min
Feb 24, 9:45 PM CST	Severe Thunderstorm Warning	JAN	Clay, Lowndes, Noxubee, Oktibbeha, Winston	75 min
Feb 24, 9:53 PM CST	Severe Thunderstorm Warning	JAN	Kemper, Neshoba, Newton, Scott	67 min
Feb 24, 10:40 PM CST	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale, Newton, Scott	65 min
Feb 24, 10:48 PM CST	Severe Thunderstorm Warning	JAN	Jasper, Simpson, Smith	57 min
Feb 24, 11:31 PM CST	Severe Thunderstorm Warning	JAN	Clarke, Lauderdale	43 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2011 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.