Alert archive / Oklahoma / Mesoscale Discussions in 2003

Mesoscale Discussion 645

April 30, 200311 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Apr 30, 2003, 4:02 PM CDT for 11 counties in Oklahoma. It was in force for 118 min.

The area

The outline as issued.

The facts

Issued: Apr 30, 2003, 4:02 PM CDT (21:02 UTC)
Expired: Apr 30, 2003, 6:00 PM CDT
In force: 118 min
Issued by: the Storm Prediction Center

Counties Beckham County, OK, Caddo County, OK, Comanche County, OK, Custer County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Kiowa County, OK, Roger Mills County, OK, Tillman County, OK, Washita County, OK

The radar

The Altus AFB radar (KFDR), 67 km from the middle of the area, began a volume at 21:01 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.

Severe Thunderstorm Watch 190Apr 30, 6:05 PM CDT

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 29, 9:05 PM CDT	Mesoscale Discussion	SPC	Alfalfa, Beckham, Blaine, Caddo, Canadian, Comanche and 17 more	85 min
Apr 29, 9:20 PM CDT	Severe Thunderstorm Watch	SPC	Love	3 hr
Apr 29, 11:16 PM CDT	Mesoscale Discussion	SPC	Marshall	119 min
Apr 30, 6:05 PM CDT	Severe Thunderstorm Watch	SPC	Alfalfa, Blaine, Caddo, Canadian, Comanche, Cotton and 14 more	5 hr

Nearby

Mesoscale Discussions in Oklahoma, 2003 Every mesoscale discussion in 2003

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.