Alert archive / Montana / Mesoscale Discussions in 2013

Mesoscale Discussion 1509

July 24, 201316 counties in Montana; Golden Valley County, North Dakota

The Storm Prediction Center issued this mesoscale discussion at Jul 24, 2013, 5:08 PM MDT for 16 counties in Montana; Golden Valley County, North Dakota. It was in force for 97 min.

The area

The outline as issued.

The facts

Issued: Jul 24, 2013, 5:08 PM MDT (23:08 UTC)
Expired: Jul 24, 2013, 6:45 PM MDT
In force: 97 min
Issued by: the Storm Prediction Center
Chance of a watch: 60%

Counties Blaine County, MT, Chouteau County, MT, Dawson County, MT, Garfield County, MT, Glacier County, MT, Hill County, MT, Liberty County, MT, McCone County, MT, Phillips County, MT, Pondera County, MT, Prairie County, MT, Richland County, MT, Roosevelt County, MT, Toole County, MT, Valley County, MT, Wibaux County, MT, Golden Valley County, ND

The radar

The Glasgow radar (KGGW), 89 km from the middle of the area, began a volume at 23:12 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 442Jul 24, 5:25 PM MDT

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
Jul 24, 1:21 PM MDT	Mesoscale Discussion	SPC	Blaine, Daniels, Dawson, Garfield, Hill, McCone and 7 more	84 min
Jul 24, 5:26 PM MDT	Severe Thunderstorm Watch	SPC	Blaine, Cascade, Chouteau, Daniels, Dawson, Fergus and 18 more	7 hr
Jul 24, 3:36 PM MDT	Mesoscale Discussion	SPC	Barnes, Cass, Grand Forks, Griggs, Ransom, Richland and 3 more	114 min

Nearby

Mesoscale Discussions in Montana, 2013 Mesoscale Discussions in North Dakota, 2013 Every mesoscale discussion in 2013

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.