Alert archive / Montana / Snow Squall Warnings in 2020

Snow Squall Warning 8, NWS Great Falls, MT

October 21, 2020Cascade County, Chouteau County, Montana

NWS Great Falls, MT issued this snow squall warning at Oct 21, 2020, 2:00 PM MDT for Cascade County, Chouteau County, Montana. It was in force for 60 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 21, 2020, 2:00 PM MDT (20:00 UTC)
Expired
Oct 21, 2020, 3:00 PM MDT
In force
60 min
Issued by
NWS Great Falls, MT
Area
Storm-based polygon

Counties Cascade County, MT, Chouteau County, MT

The radar

The Great Falls radar (KTFX), 40 km from the middle of the area, began a volume at 20:03 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 office that day

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

IssuedProductOfficeCountiesLasted
Oct 21, 1:05 AM MDTDense Fog AdvisoryTFX9 hr
Oct 21, 10:30 AM MDTWinter Storm WarningTFX22 hr
Oct 21, 1:03 PM MDTSnow Squall WarningTFXCascade, Chouteau, Lewis and Clark57 min
Oct 21, 1:43 PM MDTWinter Storm WatchTFX37 hr

Nearby

Snow Squall Warnings in Montana, 2020Every snow squall warning 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.