Alert archive / Montana / Mesoscale Discussions in 2007

Mesoscale Discussion 835

May 19, 200718 counties in Montana; 5 counties in Wyoming

The Storm Prediction Center issued this mesoscale discussion at May 19, 2007, 1:41 PM MDT for 18 counties in Montana; 5 counties in Wyoming. It was in force for 64 min.

The area

The outline as issued.

The facts

Issued: May 19, 2007, 1:41 PM MDT (19:41 UTC)
Expired: May 19, 2007, 2:45 PM MDT
In force: 64 min
Issued by: the Storm Prediction Center

All 23 counties

Big Horn County, MT, Broadwater County, MT, Carbon County, MT, Cascade County, MT, Fergus County, MT, Golden Valley County, MT, Jefferson County, MT, Judith Basin County, MT, Lewis and Clark County, MT, Meagher County, MT, Musselshell County, MT, Park County, MT, Rosebud County, MT, Stillwater County, MT, Sweet Grass County, MT, Treasure County, MT, Wheatland County, MT, Yellowstone County, MT, Big Horn County, WY, Hot Springs County, WY, Johnson County, WY, Sheridan County, WY, Washakie County, WY

The radar

The Billings radar (KBLX), 54 km from the middle of the area, began a volume at 19:43 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 280May 19, 2:40 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
May 19, 2:36 PM MDT	Severe Thunderstorm Watch	SPC	Big Horn, Broadwater, Carbon, Carter, Cascade, Chouteau and 18 more	7 hr
May 19, 5:43 PM MDT	Mesoscale Discussion	SPC	Big Horn, Carter, Custer, Fergus, Golden Valley, Judith Basin and 9 more	92 min

Nearby

Mesoscale Discussions in Montana, 2007 Mesoscale Discussions in Wyoming, 2007 Every mesoscale discussion in 2007

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.