Alert archive / Montana / Heavy Snow Warnings in 2007

Heavy Snow Warning 10, NWS Missoula, MT

May 20, 20076 counties in Montana; Clearwater County, Idaho County, Idaho

NWS Missoula, MT issued this heavy snow warning at May 20, 2007, 2:07 PM MDT for 6 counties in Montana; Clearwater County, Idaho County, Idaho. It took effect at May 21, 2007, 6:00 AM MDT. It was in force for 24 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 20, 2007, 2:07 PM MDT (20:07 UTC)
In effect from: May 21, 2007, 6:00 AM MDT
Expired: May 22, 2007, 5:48 AM MDT
In force: 24 hr
Issued by: NWS Missoula, MT

Counties Clearwater County, ID, Idaho County, ID, Deer Lodge County, MT, Granite County, MT, Missoula County, MT, Powell County, MT, Ravalli County, MT, Silver Bow County, MT

The radar

The Missoula radar (KMSX), 76 km from the middle of the area, began a volume at 20:10 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.

What forecasters said that day

The local office's own words before this heavy snow warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Missoula, MT wrote its last area forecast discussion before this heavy snow warning went out at May 20, 9:09 AM MDT, 4 hours 58 minutes earlier.

Area forecast discussion, May 20, 9:09 AM MDT, 4 hours 58 minutes before

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The office that day

Everything else NWS Missoula, MT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 20, 3:50 AM MDT	Winter Storm Watch	MSO	Deer Lodge, Flathead, Granite, Lake, Missoula, Powell and 2 more	24 hr
May 20, 2:07 PM MDT	Snow Advisory	MSO	Deer Lodge, Flathead, Granite, Lake, Mineral, Missoula and 4 more	24 hr

Nearby

Heavy Snow Warnings in Montana, 2007 Heavy Snow Warnings in Idaho, 2007 Every heavy snow warning 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.