Alert archive / Louisiana / Mesoscale Discussions in 2018

Mesoscale Discussion 1327

August 20, 2018Ashley County, Chicot County, Arkansas; 14 parishes in Louisiana; 9 counties in Mississippi

The Storm Prediction Center issued this mesoscale discussion at Aug 20, 2018, 3:14 PM CDT for Ashley County, Chicot County, Arkansas; 14 parishes in Louisiana; 9 counties in Mississippi. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Aug 20, 2018, 3:14 PM CDT (20:14 UTC)
Expired: Aug 20, 2018, 5:45 PM CDT
In force: 3 hr
Issued by: the Storm Prediction Center
Chance of a watch: 40%

All 25 counties

Ashley County, AR, Chicot County, AR, Bienville Parish, LA, Caldwell Parish, LA, East Carroll Parish, LA, Franklin Parish, LA, Jackson Parish, LA, Lincoln Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Ouachita Parish, LA, Richland Parish, LA, Tensas Parish, LA, Union Parish, LA, West Carroll Parish, LA, Winn Parish, LA, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Leflore County, MS, Sharkey County, MS, Sunflower County, MS, Warren County, MS, Washington County, MS, Yazoo County, MS

The radar

The Shreveport radar (KSHV), 178 km from the middle of the area, began a volume at 20:17 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 text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 20, 11:46 AM CDT	Mesoscale Discussion	SPC	Arkansas, Clay, Craighead, Crittenden, Cross, Greene and 16 more	119 min
Aug 20, 12:46 PM CDT	Severe Thunderstorm Watch	SPC	Baxter, Clay, Cleburne, Craighead, Crittenden, Cross and 21 more	7 hr
Aug 20, 4:00 PM CDT	Mesoscale Discussion	SPC	Clay, Cleburne, Craighead, Crittenden, Cross, Greene and 16 more	2 hr
Aug 20, 5:57 PM CDT	Mesoscale Discussion	SPC	Ashley, Chicot	63 min
Aug 20, 4:45 PM CDT	Severe Thunderstorm Watch	SPC	Alcorn, Benton, Calhoun, Chickasaw, DeSoto, Itawamba and 14 more	6 hr

Nearby

Mesoscale Discussions in Louisiana, 2018 Mesoscale Discussions in Mississippi, 2018 Mesoscale Discussions in Arkansas, 2018 Every mesoscale discussion 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; radar from the NEXRAD Level II archive.