Alert archive / Mississippi / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 7, NWS Jackson, MS

January 8, 2012Winston County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jan 8, 2012, 11:00 PM CST for Winston 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
Jan 8, 2012, 11:00 PM CST (05:00 UTC)
Expired
Jan 8, 2012, 11:45 PM CST
In force
45 min
Issued by
NWS Jackson, MS
Area
Storm-based polygon

County Winston County, MS

The radar

The Columbus AFB radar (KGWX), 112 km from the middle of the area, began a volume at 05:00 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 nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 5.0 hours before the alert went out and 128 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-pSkew-T log-p diagram, Jackson, MS at 00:00Z on 2012-01-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 584 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jackson, MS at 00:00Z on 2012-01-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 91 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
584 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
672 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
91 m²/s²
0-3 km storm-relative helicity
165 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.5

Open this sounding in Storm Lab

The text

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

620 
WUUS54 KJAN 090500
SVRJAN
MSC159-090545-
/O.NEW.KJAN.SV.W.0007.120109T0500Z-120109T0545Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1100 PM CST SUN JAN 8 2012

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WINSTON COUNTY IN EAST CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITY OF LOUISVILLE...

* UNTIL 1145 PM CST

* AT 1100 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 11
  MILES WEST OF CENTER RIDGE MOVING NORTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CENTER RIDGE BY 1120 PM CST...
  LOUISVILLE BY 1130 PM CST...
  MILLCREEK BY 1145 PM CST...

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.

&&

LAT...LON 3310 8881 3294 8931 3309 8931 3311 8927
      3311 8922 3314 8921 3316 8916 3320 8912
      3320 8911 3321 8911 3328 8903
TIME...MOT...LOC 0500Z 233DEG 22KT 3304 8923

$$

40
2 follow-up statements
694 
WWUS54 KJAN 090522
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1122 PM CST SUN JAN 8 2012

MSC159-090545-
/O.CON.KJAN.SV.W.0007.000000T0000Z-120109T0545Z/
WINSTON MS-
1122 PM CST SUN JAN 8 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM CST
FOR WINSTON COUNTY...

AT 1121 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR LOUISVILLE MOVING NORTHEAST AT 25 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.

&&

LAT...LON 3300 8914 3311 8922 3314 8921 3316 8916
      3319 8913 3320 8911 3321 8911 3323 8909
      3327 8902 3310 8881
TIME...MOT...LOC 0521Z 229DEG 23KT 3312 8910

$$

40
749 
WWUS54 KJAN 090545
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1145 PM CST SUN JAN 8 2012

MSC159-090554-
/O.EXP.KJAN.SV.W.0007.000000T0000Z-120109T0545Z/
WINSTON MS-
1145 PM CST SUN JAN 8 2012

...THE SEVERE THUNDERSTORM WARNING FOR WINSTON COUNTY EXPIRES AT 
1145 PM CST...

THE STORM THAT PROMPTED THE SEVERE THUNDERSTORM WARNING HAS WEAKENED
SLIGHTLY AS IT APPROACHED BETHEDEN MOVING NORTHEAST AT 25 MPH. THE 
STORM WAS BELOW SEVERE LIMITS BUT MAY STILL PRODUCE DIME SIZE HAIL 
AND WINDS OF 40 MPH. THE WARNING HAS BEEN ALLOWED TO EXPIRE FOR NOW.

LAT...LON 3300 8914 3311 8922 3314 8921 3316 8916
      3319 8913 3320 8911 3321 8911 3323 8909
      3327 8902 3310 8881
TIME...MOT...LOC 0544Z 229DEG 23KT 3322 8897

$$

40

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 8, 7:06 PM CSTFlash Flood WarningJANCovington26 days
Jan 8, 8:03 PM CSTSpecial Weather StatementJANJones42 min
Jan 8, 8:08 PM CSTSpecial Weather StatementJANScott42 min
Jan 8, 8:13 PM CSTSevere Thunderstorm WarningJANRankin, Scott47 min
Jan 8, 8:42 PM CSTSevere Thunderstorm WarningJANLeake48 min
Jan 8, 9:08 PM CSTSpecial Weather StatementJANJones27 min
Jan 8, 9:29 PM CSTSevere Thunderstorm WarningJANLeake, Neshoba31 min
Jan 8, 10:04 PM CSTSevere Thunderstorm WarningJANWinston41 min
Jan 8, 10:32 PM CSTSpecial Weather StatementJANLeake28 min
Jan 8, 11:07 PM CSTSpecial Weather StatementJANClarke28 min
Jan 8, 11:10 PM CSTSpecial Weather StatementJANNoxubee30 min
Jan 9, 5:04 AM CSTDense Fog AdvisoryJANAdams, Attala, Carroll, Choctaw, Claiborne, Clay and 33 more5 hr

Nearby

Severe Thunderstorm Warnings in Mississippi, 2012Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.