Alert archive / Louisiana / Mesoscale Discussions in 2017

Mesoscale Discussion 806

May 21, 201731 parishes in Louisiana; 21 counties in Mississippi; Hardin County, Newton County, Texas

The Storm Prediction Center issued this mesoscale discussion at May 21, 2017, 2:22 PM CDT for 31 parishes in Louisiana; 21 counties in Mississippi; Hardin County, Newton County, Texas. It was in force for 113 min.

The area

The outline as issued.

The facts

Issued: May 21, 2017, 2:22 PM CDT (19:22 UTC)
Expired: May 21, 2017, 4:15 PM CDT
In force: 113 min
Issued by: the Storm Prediction Center
Chance of a watch: 20%

All 54 counties

Acadia Parish, LA, Allen Parish, LA, Ascension Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Calcasieu Parish, LA, Catahoula Parish, LA, Concordia Parish, LA, East Baton Rouge Parish, LA, East Carroll Parish, LA, East Feliciana Parish, LA, Evangeline Parish, LA, Franklin Parish, LA, Grant Parish, LA, Iberville Parish, LA, Jefferson Davis Parish, LA, Lafayette Parish, LA, LaSalle Parish, LA, Livingston Parish, LA, Madison Parish, LA, Pointe Coupee Parish, LA, Rapides Parish, LA, Saint Helena Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA, Tangipahoa Parish, LA, Tensas Parish, LA, Vernon Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Adams County, MS, Amite County, MS, Claiborne County, MS, Copiah County, MS, Franklin County, MS, Hinds County, MS, Issaquena County, MS, Jefferson County, MS, Jefferson Davis County, MS, Lawrence County, MS, Lincoln County, MS, Madison County, MS, Marion County, MS, Pike County, MS, Rankin County, MS, Sharkey County, MS, Simpson County, MS, Walthall County, MS, Warren County, MS, Wilkinson County, MS, Yazoo County, MS, Hardin County, TX, Newton County, TX

The radar

The Ft Polk radar (KPOE), 95 km from the middle of the area, began a volume at 19:22 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 text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 21, 12:44 PM CDT	Mesoscale Discussion	SPC	Dimmit, Kinney, Maverick, Val Verde, Webb, Zavala	91 min
May 21, 3:54 PM CDT	Mesoscale Discussion	SPC	Jim Hogg, Webb, Zapata	96 min
May 21, 4:35 PM CDT	Mesoscale Discussion	SPC	Dallam, Hansford, Hartley, Moore, Oldham, Sherman	2 hr

Nearby

Mesoscale Discussions in Louisiana, 2017 Mesoscale Discussions in Mississippi, 2017 Mesoscale Discussions in Texas, 2017 Every mesoscale discussion in 2017

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.