Alert archive / Mississippi / Mesoscale Discussions in 2020

Mesoscale Discussion 1870

December 23, 202024 parishes in Louisiana; 26 counties in Mississippi

The Storm Prediction Center issued this mesoscale discussion at Dec 23, 2020, 10:51 PM CST for 24 parishes in Louisiana; 26 counties in Mississippi. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued: Dec 23, 2020, 10:51 PM CST (04:51 UTC)
Expired: Dec 24, 2020, 12:45 AM CST
In force: 114 min
Issued by: the Storm Prediction Center
Concerning: Tornado watch 516

All 50 counties

Acadia Parish, LA, Ascension Parish, LA, Assumption Parish, LA, Cameron Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Iberia Parish, LA, Iberville Parish, LA, Jefferson Davis Parish, LA, Lafayette Parish, LA, Livingston Parish, LA, Pointe Coupee Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA, Saint Tammany Parish, LA, St. Mary Parish, LA, Tangipahoa Parish, LA, Vermilion Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Amite County, MS, Copiah County, MS, Covington County, MS, Forrest County, MS, Franklin County, MS, Hinds County, MS, Jasper County, MS, Jefferson County, MS, Jefferson Davis County, MS, Jones County, MS, Lamar County, MS, Lawrence County, MS, Leake County, MS, Lincoln County, MS, Madison County, MS, Marion County, MS, Newton County, MS, Pearl River County, MS, Perry County, MS, Pike County, MS, Rankin County, MS, Scott County, MS, Simpson County, MS, Smith County, MS, Walthall County, MS, Wilkinson County, MS

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Tornado Watch 517Dec 24, 1:40 AM CST

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
Dec 23, 8:40 PM CST	Tornado Watch	SPC	Acadia, Allen, Ascension, Assumption, Avoyelles, Beauregard and 25 more	5 hr
Dec 24, 1:02 AM CST	Mesoscale Discussion	SPC	Saint Tammany	58 min
Dec 24, 1:42 AM CST	Tornado Watch	SPC	Saint Tammany	7 hr

Nearby

Mesoscale Discussions in Mississippi, 2020 Mesoscale Discussions in Louisiana, 2020 Every mesoscale discussion in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.