Alert archive / Montana / Frost Advisories in 2026
Frost Advisory 4, NWS Missoula, MT
NWS Missoula, MT issued this frost advisory at May 18, 2026, 12:00 PM MDT for 7 counties in Montana; Clearwater County, Idaho County, Lemhi County, Idaho. It took effect at May 19, 2026, 12:00 AM MDT. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- May 18, 2026, 12:00 PM MDT (18:00 UTC)
- In effect from
- May 19, 2026, 12:00 AM MDT
- Expired
- May 19, 2026, 10:00 AM MDT
- In force
- 10 hr
- Issued by
- NWS Missoula, MT
Counties Clearwater County, ID, Idaho County, ID, Lemhi County, ID, Flathead County, MT, Granite County, MT, Lake County, MT, Mineral County, MT, Missoula County, MT, Ravalli County, MT, Sanders County, MT
The radar
The Missoula radar (KMSX), 48 km from the middle of the area, began a volume at 18:02 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.
Nearby
Frost Advisories in Montana, 2026Frost Advisories in Idaho, 2026Every frost advisory in 2026
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.