Alert archive / Mississippi / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 608, NWS Jackson, MS

August 9, 2011Rankin County, Simpson County, Smith County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Aug 9, 2011, 7:09 PM CDT for Rankin County, Simpson County, Smith County, Mississippi. It was in force for 36 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
Aug 9, 2011, 7:09 PM CDT (00:09 UTC)
Expired
Aug 9, 2011, 7:45 PM CDT
In force
36 min
Issued by
NWS Jackson, MS
Area
Storm-based polygon

Counties Rankin County, MS, Simpson County, MS, Smith County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 33 km from the middle of the area, began a volume at 00:11 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, 0.2 hours before the alert went out and 43 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 2011-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2426 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 2011-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 square meters per square second.193958Sfc1 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
2426 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
1419 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
62 m²/s²
0-3 km storm-relative helicity
107 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.5

Open this sounding in Storm Lab

The text

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

293 
WUUS54 KJAN 100009
SVRJAN
MSC121-127-129-100045-
/O.NEW.KJAN.SV.W.0608.110810T0009Z-110810T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
709 PM CDT TUE AUG 9 2011

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN RANKIN COUNTY IN CENTRAL MISSISSIPPI...
  NORTHEASTERN SIMPSON COUNTY IN CENTRAL MISSISSIPPI...
  NORTHWESTERN SMITH COUNTY IN CENTRAL MISSISSIPPI...

* UNTIL 745 PM CDT

* AT 709 PM CDT...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 NEAR
  WHITE OAK MOVING SOUTHEAST AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  RALEIGH

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 3208 8947 3189 8962 3214 9003 3232 8992
TIME...MOT...LOC 0009Z 294DEG 12KT 3207 8972

$$

EEC
1 follow-up statement
724 
WWUS54 KJAN 100034
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
734 PM CDT TUE AUG 9 2011

MSC121-127-129-100045-
/O.CON.KJAN.SV.W.0608.000000T0000Z-110810T0045Z/
SMITH MS-SIMPSON MS-RANKIN MS-
734 PM CDT TUE AUG 9 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR SOUTHEASTERN RANKIN...NORTHEASTERN SIMPSON AND NORTHWESTERN SMITH
COUNTIES...

AT 734 PM CDT...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 
MARTINVILLE MOVING SOUTHEAST AT 20 MPH. ANOTHER POTENTIALLY SEVERE 
STORM WAS LOCATED BETWEEN PUCKETT AND PELAHATCHIE...ALSO MOVING 
SOUTHEAST AT 20 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 3208 8947 3189 8962 3214 9003 3232 8992
TIME...MOT...LOC 0034Z 326DEG 17KT 3196 8968

$$

EEC

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 7:03 PM CDTSevere Thunderstorm WarningJANCovington, Jasper, Jones, Smith27 min
Aug 9, 7:06 PM CDTSpecial Weather StatementJANRankin44 min
Aug 9, 7:47 PM CDTFlash Flood WarningJANJasper, Jones, Smith118 min
Aug 9, 8:26 PM CDTSpecial Weather StatementJANSharkey44 min
Aug 9, 10:03 PM CDTSpecial Weather StatementJANSharkey47 min
Aug 10, 12:11 AM CDTSpecial Weather StatementJANScott59 min
Aug 10, 1:43 PM CDTSpecial Weather StatementJANNoxubee32 min
Aug 10, 3:18 PM CDTSpecial Weather StatementJANClay32 min
Aug 10, 3:30 PM CDTSevere Thunderstorm WarningJANClay60 min
Aug 10, 4:03 PM CDTSevere Thunderstorm WarningJANLowndes, Oktibbeha72 min
Aug 10, 4:09 PM CDTSpecial Weather StatementJANSimpson31 min
Aug 10, 4:46 PM CDTSpecial Weather StatementJANNoxubee29 min
Aug 10, 4:52 PM CDTSpecial Weather StatementJANSimpson58 min
Aug 10, 4:55 PM CDTSpecial Weather StatementJANJones30 min
Aug 10, 4:58 PM CDTSevere Thunderstorm WarningJANNoxubee37 min
Aug 10, 5:01 PM CDTSevere Thunderstorm WarningJANJones44 min
Aug 10, 5:26 PM CDTSpecial Weather StatementJANNeshoba59 min
Aug 10, 5:45 PM CDTSpecial Weather StatementJANSmith30 min
Aug 10, 6:13 PM CDTSpecial Weather StatementJANSmith47 min
Aug 10, 6:19 PM CDTSpecial Weather StatementJANSimpson31 min
Aug 10, 6:28 PM CDTSpecial Weather StatementJANKemper32 min
Aug 10, 6:58 PM CDTSpecial Weather StatementJANLauderdale32 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2011Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.