Alert archive / Mississippi / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 261, NWS Jackson, MS

May 21, 2012Neshoba County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at May 21, 2012, 5:51 PM CDT for Neshoba County, Mississippi. It was in force for 39 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: May 21, 2012, 5:51 PM CDT (22:51 UTC)
Expired: May 21, 2012, 6:30 PM CDT
In force: 39 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

County Neshoba County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 95 km from the middle of the area, began a volume at 22:54 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 12:00Z, 10.9 hours before the alert went out and 102 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: 518 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 1663 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 14 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

395 
WUUS54 KJAN 212251
SVRJAN
MSC099-212330-
/O.NEW.KJAN.SV.W.0261.120521T2251Z-120521T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
551 PM CDT MON MAY 21 2012

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

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

* UNTIL 630 PM CDT

* AT 551 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
  PHILADELPHIA MOVING SOUTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BETHSAIDA AND NESHOBA BY 610 PM CDT...
  HOUSE BY 620 PM CDT...
  HERBERT SPRINGS BY 630 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.

&&

LAT...LON 3258 8916 3275 8931 3287 8915 3267 8891
      3258 8891 3258 8892
TIME...MOT...LOC 2251Z 319DEG 21KT 3274 8916

$$

GRG

1 follow-up statement

185 
WWUS54 KJAN 212308
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
608 PM CDT MON MAY 21 2012

MSC099-212330-
/O.CON.KJAN.SV.W.0261.000000T0000Z-120521T2330Z/
NESHOBA MS-
608 PM CDT MON MAY 21 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR SOUTHERN NESHOBA COUNTY...

AT 608 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
NESHOBA MOVING SOUTHEAST AT 25 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  HOUSE BY 620 PM CDT...
  HERBERT SPRINGS BY 630 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.

&&

LAT...LON 3258 8916 3278 8927 3283 8911 3267 8891
      3258 8891
TIME...MOT...LOC 2308Z 324DEG 21KT 3266 8911

$$

GRG

The office that day

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

Issued	Product	Office	Counties	Lasted
May 21, 3:31 AM CDT	Special Weather Statement	JAN	Carroll	54 min
May 21, 6:19 AM CDT	Special Weather Statement	JAN	Sharkey	31 min
May 21, 9:13 AM CDT	Special Weather Statement	JAN	Attala	32 min
May 21, 2:12 PM CDT	Special Weather Statement	JAN	Jefferson	28 min
May 21, 2:17 PM CDT	Special Weather Statement	JAN	Madison	28 min
May 21, 2:33 PM CDT	Flash Flood Warning	JAN	Jefferson	117 min
May 21, 2:40 PM CDT	Severe Thunderstorm Warning	JAN	Yazoo	23 min
May 21, 2:54 PM CDT	Severe Thunderstorm Warning	JAN	Leflore	26 min
May 21, 3:15 PM CDT	Special Weather Statement	JAN	Claiborne	30 min
May 21, 3:17 PM CDT	Severe Thunderstorm Warning	JAN	Adams, Jefferson	43 min
May 21, 3:18 PM CDT	Severe Thunderstorm Warning	JAN	Rankin, Simpson	42 min
May 21, 3:18 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Madison, Rankin	27 min
May 21, 3:31 PM CDT	Severe Thunderstorm Warning	JAN	Webster	44 min
May 21, 3:33 PM CDT	Severe Thunderstorm Warning	JAN	Issaquena, Warren	27 min
May 21, 3:34 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Issaquena, Madison, Warren	41 min
May 21, 3:50 PM CDT	Severe Thunderstorm Warning	JAN	Warren	40 min
May 21, 3:53 PM CDT	Severe Thunderstorm Warning	JAN	Yazoo	12 min
May 21, 3:55 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Choctaw, Montgomery, Webster	50 min
May 21, 3:57 PM CDT	Special Weather Statement	JAN	Claiborne	28 min
May 21, 4:09 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Rankin	51 min
May 21, 4:23 PM CDT	Severe Thunderstorm Warning	JAN	Adams	37 min
May 21, 4:26 PM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Warren	25 min
May 21, 4:38 PM CDT	Special Weather Statement	JAN	Yazoo	32 min
May 21, 4:39 PM CDT	Severe Thunderstorm Warning	JAN	Choctaw, Winston	39 min
May 21, 4:44 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Choctaw, Leake, Neshoba, Winston	46 min
May 21, 4:50 PM CDT	Severe Thunderstorm Warning	JAN	Copiah, Hinds, Rankin, Simpson	40 min
May 21, 4:52 PM CDT	Special Weather Statement	JAN	Warren	13 min
May 21, 5:04 PM CDT	Severe Thunderstorm Warning	JAN	Warren	26 min
May 21, 5:17 PM CDT	Severe Thunderstorm Warning	JAN	Neshoba	28 min
May 21, 5:21 PM CDT	Special Weather Statement	JAN	Jefferson Davis	39 min
May 21, 5:24 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis	15 min
May 21, 5:27 PM CDT	Special Weather Statement	JAN	Bolivar	18 min
May 21, 5:28 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Leake, Neshoba	32 min
May 21, 5:42 PM CDT	Special Weather Statement	JAN	Jefferson Davis	28 min
May 21, 5:48 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis	42 min
May 21, 5:56 PM CDT	Special Weather Statement	JAN	Jasper	29 min
May 21, 5:59 PM CDT	Special Weather Statement	JAN	Lauderdale	21 min
May 21, 6:00 PM CDT	Severe Thunderstorm Warning	JAN	Leake, Neshoba	45 min
May 21, 6:03 PM CDT	Special Weather Statement	JAN	Humphreys	22 min
May 21, 6:15 PM CDT	Special Weather Statement	JAN	Madison	20 min
May 21, 6:21 PM CDT	Special Weather Statement	JAN	Claiborne	29 min
May 21, 6:27 PM CDT	Severe Thunderstorm Warning	JAN	Holmes, Humphreys, Yazoo	33 min
May 21, 6:30 PM CDT	Severe Thunderstorm Warning	JAN	Sharkey, Yazoo	30 min
May 21, 6:46 PM CDT	Severe Thunderstorm Warning	JAN	Lauderdale, Newton	29 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.