Alert archive / Mississippi / Special Weather Statements in 2013

Special Weather Statement, NWS Jackson, MS

August 5, 2013Warren County, Mississippi

NWS Jackson, MS issued this special weather statement at Aug 5, 2013, 8:21 PM CDT for Warren County, Mississippi. It was in force for 59 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 5, 2013, 8:21 PM CDT (01:21 UTC)
Expired: Aug 5, 2013, 9:20 PM CDT
In force: 59 min
Issued by: NWS Jackson, MS

County Warren County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 70 km from the middle of the area, began a volume at 01:22 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 00:00Z, 1.4 hours before the alert went out and 60 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: 2455 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1288 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 39 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.3

Open this sounding in Storm Lab

The text

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

848 
WWUS84 KJAN 060121
SPSJAN
LAZ016-MSZ040-047-048-060220-
WARREN MS-ISSAQUENA MS-HINDS MS-MADISON LA-
821 PM CDT MON AUG 5 2013

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
821 PM CDT MON AUG 5 2013

...CLUSTER OF STRONG STORMS JUST NORTH OF VICKSBURG...

A SMALL CLUSTER OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING 45 MPH 
WIND GUSTS AND HEAVY RAINFALL WAS LOCATED FROM OAK RIDGE TO 3 MILES 
WEST OF TALLULAH AT 820 PM CDT...MOVING SOUTHEAST AT 15 MPH.

FREQUENT CLOUD TO GROUND LIGHTNING STRIKES ARE ALSO POSSIBLE WITH 
THESE STORMS.

HIGH WINDS CAN BRING DOWN TREES AND LARGE LIMBS RESULTING IN SERIOUS
INJURY OR PROPERTY DAMAGE. EXERCISE EXTREME CAUTION WHEN OUTDOORS
DURING SUCH STRONG WINDS...AND BE ESPECIALLY AWARE OF OLDER TREES.

PEOPLE IN NORTHERN HINDS...SOUTH CENTRAL ISSAQUENA AND NORTHERN
WARREN COUNTIES...AND NORTHERN MADISON PARISH SHOULD MONITOR THESE
STORMS CLOSELY.

LAT...LON 3238 9024 3225 9096 3242 9143 3255 9070
TIME...MOT...LOC 0120Z 293DEG 12KT 3249 9071 3240 9122

$$

BYB

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 5, 7:01 PM CDT	Flash Flood Warning	JAN	Bolivar	119 min
Aug 5, 7:04 PM CDT	Special Weather Statement	JAN	Madison	31 min
Aug 6, 2:22 PM CDT	Special Weather Statement	JAN	Webster	28 min
Aug 6, 2:57 PM CDT	Special Weather Statement	JAN	Kemper	28 min
Aug 6, 2:58 PM CDT	Special Weather Statement	JAN	Lowndes, Oktibbeha	47 min
Aug 6, 3:31 PM CDT	Special Weather Statement	JAN	Grenada	44 min
Aug 6, 3:39 PM CDT	Special Weather Statement	JAN	Lowndes	61 min
Aug 6, 4:01 PM CDT	Flash Flood Warning	JAN	Lowndes	119 min
Aug 6, 4:39 PM CDT	Special Weather Statement	JAN	Kemper, Winston	61 min
Aug 6, 4:44 PM CDT	Flash Flood Warning	JAN	Kemper, Neshoba, Noxubee, Winston	2 hr
Aug 6, 5:05 PM CDT	Special Weather Statement	JAN	Newton	30 min
Aug 6, 5:16 PM CDT	Special Weather Statement	JAN	Lauderdale	44 min
Aug 6, 5:34 PM CDT	Severe Thunderstorm Warning	JAN	Lauderdale	41 min
Aug 6, 6:12 PM CDT	Special Weather Statement	JAN	Clarke	28 min
Aug 6, 6:17 PM CDT	Flash Flood Warning	JAN	Lauderdale	118 min
Aug 6, 6:40 PM CDT	Flash Flood Warning	JAN	Kemper, Neshoba, Winston	95 min
Aug 6, 6:42 PM CDT	Special Weather Statement	JAN	Clarke	38 min

Nearby

Special Weather Statements in Mississippi, 2013 Every special weather statement in 2013

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.