Alert archive / Mississippi / Special Weather Statements in 2018

Special Weather Statement, NWS Jackson, MS

August 6, 2018Madison County, Mississippi

NWS Jackson, MS issued this special weather statement at Aug 6, 2018, 5:04 PM CDT for Madison County, Mississippi. It was in force for 41 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 6, 2018, 5:04 PM CDT (22:04 UTC)
Expired: Aug 6, 2018, 5:45 PM CDT
In force: 41 min
Issued by: NWS Jackson, MS

County Madison County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 36 km from the middle of the area, began a volume at 22:06 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, 10.1 hours before the alert went out and 38 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: 1643 J/kg
Mixed-layer CIN: -69 J/kg
Mixed-layer LCL: 1018 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -41 m²/s²
0-3 km storm-relative helicity: -73 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jackson, MS wrote its last area forecast discussion before this special weather statement went out at Aug 6, 3:25 PM CDT, 1 hour 39 minutes earlier.

Area forecast discussion, Aug 6, 3:25 PM CDT, 1 hour 39 minutes before

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Hazardous weather outlook, Aug 6, 2:37 PM CDT, 2 hours 27 minutes before

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In the hours before

Special weather statement, Aug 6, 1:21 PM CDT, 3 hours 43 minutes before

Special Weather Statement
National Weather Service Jackson MS
121 PM CDT MON AUG 6 2018

MSZ032-033-061900-
Oktibbeha MS-Choctaw MS-
121 PM CDT MON AUG 6 2018

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN CHOCTAW AND WESTERN
OKTIBBEHA COUNTIES UNTIL 200 PM CDT...

At 121 PM CDT, Meteorologists were tracking a strong thunderstorm
near Sherwood, or 11 miles west of Starkville, moving northeast at 5
mph.

Winds in excess of 40 mph will be possible with this storm.

This strong thunderstorm will be near...
  Longview around 135 PM CDT.

Other locations impacted by this storm include Sturgis.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3330 8895 3329 8899 3329 8906 3343 8919
      3353 8911 3353 8909 3355 8909 3356 8908
      3356 8893 3345 8886
TIME...MOT...LOC 1821Z 231DEG 6KT 3347 8902

DC

Local storm report, Aug 6, 1:37 PM CDT, 3 hours 27 minutes before

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Special weather statement, Aug 6, 2:14 PM CDT, 2 hours 50 minutes before

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Special weather statement, Aug 6, 2:35 PM CDT, 2 hours 29 minutes before

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Special weather statement, Aug 6, 4:09 PM CDT, 55 minutes before

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Special weather statement, Aug 6, 5:04 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 5, 7:02 PM CDT	Special Weather Statement	JAN	Sharkey, Yazoo	43 min
Aug 5, 9:05 PM CDT	Special Weather Statement	JAN	Holmes	40 min
Aug 6, 1:21 PM CDT	Special Weather Statement	JAN	Oktibbeha	39 min
Aug 6, 1:30 PM CDT	Severe Thunderstorm Warning	JAN	Choctaw, Clay, Oktibbeha, Webster	45 min
Aug 6, 2:14 PM CDT	Special Weather Statement	JAN	Choctaw	31 min
Aug 6, 2:35 PM CDT	Special Weather Statement	JAN	Grenada	25 min
Aug 6, 4:09 PM CDT	Special Weather Statement	JAN	Winston	36 min

Nearby

Special Weather Statements in Mississippi, 2018 Every special weather statement in 2018

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.