Alert archive / Mississippi / Special Weather Statements in 2021

Special Weather Statement, NWS Jackson, MS

December 6, 2021Clarke County, Mississippi

NWS Jackson, MS issued this special weather statement at Dec 6, 2021, 12:21 PM CST for Clarke County, Mississippi. It was in force for 24 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: Dec 6, 2021, 12:21 PM CST (18:21 UTC)
Expired: Dec 6, 2021, 12:45 PM CST
In force: 24 min
Issued by: NWS Jackson, MS
Hail: 0.25 in
Wind: 50

County Clarke County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 132 km from the middle of the area, began a volume at 18:20 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, 6.4 hours before the alert went out and 142 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: 799 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 551 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 261 m²/s²
0-3 km storm-relative helicity: 282 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 6.9

Open this sounding in Storm Lab

The text

As transmitted.

638 
WWUS84 KJAN 061821
SPSJAN

Special Weather Statement
National Weather Service Jackson MS
1221 PM CST Mon Dec 6 2021
 
MSZ058-061845-
Clarke MS-
1221 PM CST Mon Dec 6 2021

...A strong thunderstorm will impact portions of southern Clarke
County through 1245 PM CST...

At 1220 PM CST, Doppler radar was tracking a strong thunderstorm near
Goodwater, or 14 miles southwest of Quitman, moving east at 40 mph.

HAZARD...Wind gusts up to 50 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects. Minor damage to outdoor objects is 
         possible.

This storm will remain over mainly rural areas of southern Clarke
County, including the following locations... Shubuta.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3190 8847 3189 8848 3185 8863 3183 8891
      3194 8891 3197 8890 3197 8846
TIME...MOT...LOC 1820Z 291DEG 36KT 3187 8885 

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH

$$

7

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 6, 4:51 AM CST	Special Weather Statement	JAN	Issaquena	24 min
Dec 6, 5:16 AM CST	Special Weather Statement	JAN	Yazoo	29 min
Dec 6, 5:50 AM CST	Special Weather Statement	JAN	Grenada, Leflore	25 min
Dec 6, 6:19 AM CST	Special Weather Statement	JAN	Grenada, Webster	41 min
Dec 6, 6:50 AM CST	Special Weather Statement	JAN	Clay, Webster	40 min
Dec 6, 6:59 AM CST	Special Weather Statement	JAN	Bolivar	31 min
Dec 6, 7:34 AM CST	Special Weather Statement	JAN	Clay, Lowndes, Oktibbeha	41 min
Dec 6, 7:43 AM CST	Severe Thunderstorm Warning	JAN	Clay, Lowndes, Oktibbeha	47 min
Dec 6, 8:08 AM CST	Special Weather Statement	JAN	Noxubee	37 min
Dec 6, 9:38 AM CST	Severe Thunderstorm Warning	JAN	Hinds, Rankin	52 min
Dec 6, 9:47 AM CST	Special Weather Statement	JAN	Madison	28 min
Dec 6, 10:13 AM CST	Severe Thunderstorm Warning	JAN	Rankin	62 min
Dec 6, 10:22 AM CST	Special Weather Statement	JAN	Copiah	38 min
Dec 6, 11:05 AM CST	Special Weather Statement	JAN	Simpson	40 min
Dec 6, 11:36 AM CST	Special Weather Statement	JAN	Jasper, Smith	39 min
Dec 6, 11:46 AM CST	Severe Thunderstorm Warning	JAN	Clarke, Jasper	59 min
Dec 6, 11:57 AM CST	Special Weather Statement	JAN	Covington, Jones	48 min

Nearby

Special Weather Statements in Mississippi, 2021 Every special weather statement in 2021

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.