Alert archive / Mississippi / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 340, NWS Jackson, MS

June 11, 20125 counties in Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jun 11, 2012, 6:58 PM CDT for 5 counties in Mississippi. It was in force for 77 min. 2 reports 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: Jun 11, 2012, 6:58 PM CDT (23:58 UTC)
Expired: Jun 11, 2012, 8:15 PM CDT
In force: 77 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

Counties Attala County, MS, Carroll County, MS, Choctaw County, MS, Montgomery County, MS, Webster County, MS

The radar

The Columbus AFB radar (KGWX), 114 km from the middle of the area, began a volume at 00:02 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
Jun 11, 7:00 PM CDT	TSTM WND DMG	6 Se Lodi, MS	SEVERAL TREES DOWNED WEST OF TOMNOLEN
Jun 11, 7:40 PM CDT	TSTM WND DMG	8 Nnw Kosciusko, MS	TREE DOWNED ACROSS HIGHWAY 35 NORTH OF KOSCIUSKO

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
Jun 11, 5:17 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 12.0 hours before the alert went out and 133 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: 1602 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 488 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 96 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.7

Open this sounding in Storm Lab

The text

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

692 
WUUS54 KJAN 112358
SVRJAN
MSC007-015-019-097-155-120115-
/O.NEW.KJAN.SV.W.0340.120611T2358Z-120612T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
658 PM CDT MON JUN 11 2012

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN ATTALA COUNTY IN CENTRAL MISSISSIPPI...
  CHOCTAW COUNTY IN CENTRAL MISSISSIPPI...
  EASTERN CARROLL COUNTY IN NORTH CENTRAL MISSISSIPPI...
  MONTGOMERY COUNTY IN NORTH CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITY OF WINONA...
  WEBSTER COUNTY IN NORTH CENTRAL MISSISSIPPI...

* UNTIL 815 PM CDT

* AT 657 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM DUCK HILL TO 7 MILES SOUTHEAST OF LODI TO SHERWOOD MOVING
  SOUTH AT 30 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  WINONA AND KILMICHAEL BY 705 PM CDT...
  CHESTER BY 710 PM CDT...
  POPLAR CREEK AND ACKERMAN BY 720 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WINDS OF 60 MPH CAN BRING DOWN TREES...POSSIBLY RESULTING IN INJURY
AND PROPERTY DAMAGE. ROOFS OF MOBILE HOMES AND OUTBUILDINGS COULD BE
DAMAGED...AND MINOR ROOF DAMAGE TO WELL BUILT HOMES AND STRUCTURES
COULD OCCUR.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
MONDAY EVENING FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND
MISSISSIPPI.

&&

LAT...LON 3366 8904 3356 8903 3356 8909 3329 8909
      3328 8911 3320 8911 3320 8921 3311 8922
      3310 8949 3322 8977 3323 8974 3329 8970
      3329 8965 3340 8965 3342 8978 3368 8980
TIME...MOT...LOC 2357Z 008DEG 22KT 3357 8977 3345 8943
          3343 8908

$$

JA

3 follow-up statements

268 
WWUS54 KJAN 120033
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
733 PM CDT MON JUN 11 2012

MSC007-015-019-097-155-120115-
/O.CON.KJAN.SV.W.0340.000000T0000Z-120612T0115Z/
ATTALA MS-WEBSTER MS-MONTGOMERY MS-CHOCTAW MS-CARROLL MS-
733 PM CDT MON JUN 11 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR SOUTHEASTERN CARROLL...CHOCTAW...MONTGOMERY...SOUTHERN WEBSTER
AND NORTHEASTERN ATTALA COUNTIES...

AT 734 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM 9 MILES SOUTHWEST OF WINONA TO FRENCH CAMP TO 6 MILES SOUTHEAST
OF ACKERMAN MOVING SOUTH AT 25 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  ETHEL BY 750 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WINDS OF 60 MPH CAN BRING DOWN TREES...POSSIBLY RESULTING IN INJURY
AND PROPERTY DAMAGE. ROOFS OF MOBILE HOMES AND OUTBUILDINGS COULD BE
DAMAGED...AND MINOR ROOF DAMAGE TO WELL BUILT HOMES AND STRUCTURES
COULD OCCUR.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
MONDAY EVENING FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND
MISSISSIPPI.

&&

LAT...LON 3357 8909 3329 8909 3328 8911 3320 8911
      3320 8921 3311 8922 3310 8949 3322 8977
      3323 8974 3329 8970 3329 8965 3340 8965
      3342 8978 3358 8978
TIME...MOT...LOC 0034Z 008DEG 22KT 3335 8981 3323 8947
          3321 8912

$$

JA

944 
WWUS54 KJAN 120046
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
746 PM CDT MON JUN 11 2012

MSC155-120056-
/O.CAN.KJAN.SV.W.0340.000000T0000Z-120612T0115Z/
WEBSTER MS-
746 PM CDT MON JUN 11 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN WEBSTER COUNTY IS
CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
MONDAY EVENING FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND
MISSISSIPPI.

LAT...LON 3328 8911 3320 8911 3320 8921 3311 8922
      3310 8949 3322 8977 3323 8974 3329 8970
      3329 8965 3340 8964 3339 8909 3329 8909
TIME...MOT...LOC 0046Z 008DEG 22KT 3328 8982 3316 8948
          3314 8913

$$

MSC007-015-019-097-120115-
/O.CON.KJAN.SV.W.0340.000000T0000Z-120612T0115Z/
ATTALA MS-MONTGOMERY MS-CHOCTAW MS-CARROLL MS-
746 PM CDT MON JUN 11 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR EXTREME SOUTHEASTERN CARROLL...SOUTHERN CHOCTAW...SOUTHEASTERN
MONTGOMERY AND NORTHEASTERN ATTALA COUNTIES...

AT 746 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM 16 MILES WEST OF POPLAR CREEK TO ETHEL TO 11 MILES SOUTH OF
ACKERMAN MOVING SOUTH AT 25 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  RURAL CENTRAL ATTALA COUNTY AT 800 PM CDT

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WINDS OF 60 MPH CAN BRING DOWN TREES...POSSIBLY RESULTING IN INJURY
AND PROPERTY DAMAGE. ROOFS OF MOBILE HOMES AND OUTBUILDINGS COULD BE
DAMAGED...AND MINOR ROOF DAMAGE TO WELL BUILT HOMES AND STRUCTURES
COULD OCCUR.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
MONDAY EVENING FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND
MISSISSIPPI.

&&

LAT...LON 3328 8911 3320 8911 3320 8921 3311 8922
      3310 8949 3322 8977 3323 8974 3329 8970
      3329 8965 3340 8964 3339 8909 3329 8909
TIME...MOT...LOC 0046Z 008DEG 22KT 3328 8982 3316 8948
          3314 8913

$$

JA

575 
WWUS54 KJAN 120058
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
758 PM CDT MON JUN 11 2012

MSC019-097-120108-
/O.CAN.KJAN.SV.W.0340.000000T0000Z-120612T0115Z/
MONTGOMERY MS-CHOCTAW MS-
758 PM CDT MON JUN 11 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN CHOCTAW AND
SOUTHEASTERN MONTGOMERY COUNTIES IS CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
MONDAY EVENING FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND
MISSISSIPPI.

LAT...LON 3328 8932 3311 8932 3310 8949 3322 8977
      3323 8974 3329 8970
TIME...MOT...LOC 0058Z 008DEG 22KT 3321 8983 3309 8949
          3307 8914

$$

MSC007-015-120115-
/O.CON.KJAN.SV.W.0340.000000T0000Z-120612T0115Z/
ATTALA MS-CARROLL MS-
758 PM CDT MON JUN 11 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR EXTREME SOUTHEASTERN CARROLL AND NORTHEASTERN ATTALA COUNTIES...

AT 758 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM 22 MILES WEST OF ETHEL TO ETHEL TO 14 MILES SOUTHEAST OF MCCOOL
MOVING SOUTH AT 30 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WINDS OF 60 MPH CAN BRING DOWN TREES...POSSIBLY RESULTING IN INJURY
AND PROPERTY DAMAGE. ROOFS OF MOBILE HOMES AND OUTBUILDINGS COULD BE
DAMAGED...AND MINOR ROOF DAMAGE TO WELL BUILT HOMES AND STRUCTURES
COULD OCCUR.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
MONDAY EVENING FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND
MISSISSIPPI.

&&

LAT...LON 3328 8932 3311 8932 3310 8949 3322 8977
      3323 8974 3329 8970
TIME...MOT...LOC 0058Z 008DEG 22KT 3321 8983 3309 8949
          3307 8914

$$

JA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 10:59 AM CDT	Special Weather Statement	JAN	Forrest	31 min
Jun 11, 5:00 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar, Sunflower	75 min
Jun 11, 5:40 PM CDT	Severe Thunderstorm Warning	JAN	Clay, Lowndes, Oktibbeha	65 min
Jun 11, 5:42 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Grenada, Leflore	63 min
Jun 11, 5:49 PM CDT	Severe Thunderstorm Warning	JAN	Choctaw, Montgomery, Webster	71 min
Jun 11, 5:50 PM CDT	Severe Thunderstorm Warning	JAN	Washington	70 min
Jun 11, 6:12 PM CDT	Severe Thunderstorm Warning	JAN	Humphreys, Leflore, Sunflower	63 min
Jun 11, 6:43 PM CDT	Severe Thunderstorm Warning	JAN	Lowndes, Noxubee, Oktibbeha, Winston	77 min
Jun 11, 6:45 PM CDT	Flash Flood Warning	JAN	Carroll, Grenada, Leflore, Sunflower	2 hr
Jun 11, 6:45 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Grenada, Holmes, Leflore	75 min
Jun 11, 6:59 PM CDT	Severe Thunderstorm Warning	JAN	Humphreys, Issaquena, Sharkey, Washington	61 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2012 Every severe thunderstorm warning 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.