Alert archive / Mississippi / Special Weather Statements in 2014

Special Weather Statement, NWS Jackson, MS

August 9, 2014Kemper County, Mississippi

NWS Jackson, MS issued this special weather statement at Aug 9, 2014, 12:21 PM CDT for Kemper County, Mississippi. It was in force for 29 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, 2014, 12:21 PM CDT (17:21 UTC)
Expired: Aug 9, 2014, 12:50 PM CDT
In force: 29 min
Issued by: NWS Jackson, MS

County Kemper County, MS

The radar

The Columbus AFB radar (KGWX), 133 km from the middle of the area, began a volume at 17:22 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, 5.4 hours before the alert went out and 161 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: 2137 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 821 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 43 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.

154 
WWUS84 KJAN 091721
SPSJAN
MSZ046-091750-
KEMPER MS-
1221 PM CDT SAT AUG 9 2014

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1221 PM CDT SAT AUG 9 2014

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PENNY TO NICKEL SIZE HAIL
AND 40 TO 50 MPH WINDS WAS LOCATED OVER OAK GROVE AT 1221 PM CDT...
MOVING EAST AT 25 MPH.

VERY HEAVY RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING ARE
ALSO POSSIBLE WITH THIS STORM.

PEOPLE IN SOUTHEASTERN KEMPER COUNTY SHOULD MONITOR THIS STORM
CLOSELY.

LAT...LON 3278 8836 3272 8836 3272 8837 3265 8837
      3265 8838 3258 8838 3261 8867 3279 8866
      3280 8835
TIME...MOT...LOC 1721Z 271DEG 21KT 3269 8855

$$

GRG

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 11:38 AM CDT	Special Weather Statement	JAN	Webster	32 min
Aug 9, 12:25 PM CDT	Special Weather Statement	JAN	Lauderdale	30 min
Aug 9, 12:39 PM CDT	Special Weather Statement	JAN	Warren	31 min
Aug 9, 12:49 PM CDT	Special Weather Statement	JAN	Clay, Oktibbeha	61 min
Aug 9, 1:01 PM CDT	Severe Thunderstorm Warning	JAN	Clay, Oktibbeha	40 min
Aug 9, 1:06 PM CDT	Special Weather Statement	JAN	Winston	29 min
Aug 9, 1:10 PM CDT	Severe Thunderstorm Warning	JAN	Issaquena, Warren, Yazoo	33 min
Aug 9, 1:15 PM CDT	Special Weather Statement	JAN	Neshoba	30 min
Aug 9, 1:25 PM CDT	Special Weather Statement	JAN	Hinds	30 min
Aug 9, 1:33 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Madison	46 min
Aug 9, 1:37 PM CDT	Special Weather Statement	JAN	Kemper, Noxubee	28 min
Aug 9, 1:54 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Madison, Rankin	49 min
Aug 9, 2:06 PM CDT	Special Weather Statement	JAN	Kemper	29 min
Aug 9, 2:33 PM CDT	Flash Flood Warning	JAN	Hinds, Rankin	117 min
Aug 9, 2:44 PM CDT	Special Weather Statement	JAN	Simpson, Smith	31 min
Aug 9, 3:11 PM CDT	Special Weather Statement	JAN	Simpson	44 min
Aug 9, 3:16 PM CDT	Severe Thunderstorm Warning	JAN	Simpson	21 min
Aug 9, 3:28 PM CDT	Special Weather Statement	JAN	Winston	32 min
Aug 9, 3:34 PM CDT	Flash Flood Warning	JAN	Adams, Franklin, Jefferson	116 min
Aug 9, 3:34 PM CDT	Special Weather Statement	JAN	Covington	31 min
Aug 9, 3:39 PM CDT	Special Weather Statement	JAN	Jones	31 min
Aug 9, 3:50 PM CDT	Special Weather Statement	JAN	Forrest	30 min
Aug 9, 4:12 PM CDT	Special Weather Statement	JAN	Jefferson Davis	43 min
Aug 9, 4:43 PM CDT	Flash Flood Warning	JAN	Neshoba, Winston	2 hr
Aug 9, 4:52 PM CDT	Special Weather Statement	JAN	Jones, Marion	28 min
Aug 9, 5:39 PM CDT	Special Weather Statement	JAN	Washington	41 min
Aug 9, 6:23 PM CDT	Special Weather Statement	JAN	Washington	47 min
Aug 9, 12:10 PM CDT	Special Weather Statement	JAN	Madison	30 min
Aug 9, 2:41 PM CDT	Special Weather Statement	JAN	Franklin	29 min
Aug 9, 2:44 PM CDT	Severe Thunderstorm Warning	JAN	Franklin, Tensas	12 min
Aug 9, 3:58 PM CDT	Special Weather Statement	JAN	Richland	62 min
Aug 9, 4:06 PM CDT	Special Weather Statement	JAN	Concordia	29 min
Aug 9, 4:41 PM CDT	Special Weather Statement	JAN	Concordia	59 min
Aug 9, 4:59 PM CDT	Special Weather Statement	JAN	Avoyelles	61 min

Nearby

Special Weather Statements in Mississippi, 2014 Every special weather statement in 2014

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.