Alert archive / Texas / Mesoscale Discussions in 2020

Mesoscale Discussion 1895

December 31, 2020Cameron Parish, Louisiana; 8 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Dec 31, 2020, 11:21 AM CST for Cameron Parish, Louisiana; 8 counties in Texas. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued: Dec 31, 2020, 11:21 AM CST (17:21 UTC)
Expired: Dec 31, 2020, 1:15 PM CST
In force: 114 min
Issued by: the Storm Prediction Center
Concerning: Tornado watch 520

Counties Cameron Parish, LA, Chambers County, TX, Galveston County, TX, Hardin County, TX, Harris County, TX, Jefferson County, TX, Liberty County, TX, Montgomery County, TX, Orange County, TX

The radar

The Houston radar (KHGX), 62 km from the middle of the area, began a volume at 17:22 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 watches that followed

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

Tornado Watch 521Dec 31, 1:20 PM 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 31, 7:10 AM CST	Mesoscale Discussion	SPC	Calcasieu	95 min
Dec 31, 1:27 PM CST	Tornado Watch	SPC	Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Cameron and 10 more	8 hr
Dec 31, 2:44 PM CST	Mesoscale Discussion	SPC	Acadia, Allen, Beauregard, Calcasieu, Cameron, Evangeline and 4 more	2 hr
Dec 31, 3:30 PM CST	Mesoscale Discussion	SPC	Ascension, Assumption, East Baton Rouge, East Feliciana, Iberville, Jefferson and 13 more	2 hr
Dec 30, 8:15 PM CST	Mesoscale Discussion	SPC	Brewster, Crane, Pecos, Presidio, Upton	6 hr
Dec 31, 2:16 AM CST	Mesoscale Discussion	SPC	Brewster, Crane, Glasscock, Pecos, Reagan, Sterling and 2 more	6 hr
Dec 31, 7:40 AM CST	Tornado Watch	SPC	Brazoria, Chambers, Fort Bend, Galveston, Hardin, Harris and 7 more	7 hr
Dec 31, 9:09 AM CST	Mesoscale Discussion	SPC	Archer, Baylor, Borden, Callahan, Childress, Clay and 39 more	6 hr
Dec 31, 2:59 PM CST	Mesoscale Discussion	SPC	Baylor, Callahan, Coke, Cottle, Fisher, Foard and 16 more	4 hr

Nearby

Mesoscale Discussions in Texas, 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; radar from the NEXRAD Level II archive.