Montana, 2020

High Wind in Montana, January 2, 2020

January 2, 2020 · NWS GGW · 2 events in 1 county or zone

Very strong winds aloft and an environment just favorable enough to bring some of those winds to the surface combined to spread severe wind gusts downslope of the Little Rocky Mountains in southwestern Phillips County.

Where it happened

Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
2

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS GGW wrote it up.

Very strong winds aloft and an environment just favorable enough to bring some of those winds to the surface combined to spread severe wind gusts downslope of the Little Rocky Mountains in southwestern Phillips County.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Glasgow, MT wrote its last area forecast discussion before the first event at Jan 2, 8:59 AM MST, 4 hours 34 minutes earlier.

Area forecast discussion, Jan 2, 8:59 AM MST, 4 hours 34 minutes before
Area Forecast Discussion
National Weather Service Glasgow MT
859 AM MST Thu Jan 2 2020

.DISCUSSION...
It looks like a round of precip will move in today from the NW,
with the NE zones seeing the best chance and most of it. It'll be
in the form of snow there with rainshowers to the southwest and
possibly some freezing rain in between. The freezing rain will be
brief but will monitor this today. Most intense snowshowers could
bring around an inch or so of accumulation. TFJ

Previous Discussion...
Front will lift across the region today. Low clouds to the east
will be pushed east, but will return with a band of mixed
precipitation behind the front. Accumulations will be generally
very light and move out of the state this evening.

Ridge builds up to the west and temperatures will warm as another
chinook develops. This will lead to strong winds across much of
the area on Saturday and Saturday night as a wave breaks down the
ridge. Ebert

&&

.AVIATION...
VFR conditions this morning will deteriorate later in the day as
another round of mixed precipitation moves across the region.

&&

.GLASGOW WATCHES/WARNINGS/ADVISORIES...NONE.

&&

weather.gov/glasgow

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

2 high wind. Local standard time, as filed.

High Wind, Little Rocky Mountains

When
January 2, 1:33 PM MST to 5:04 PM MST
Where
Little Rocky Mountains forecast zone
Measured
54 kt (62 mph) measured gust
Reported by
Department of Highways
Coordinates
48.259, -107.913 (the zone’s center; the record gives no point)

At the Malta South US-191 DOT site (MTMAL), sustained winds of at least 40 mph began at 1:33 PM, and persisted at least each hour through the rest of the afternoon. The first severe wind gust of 58 mph was recorded at 3:24 PM. The peak wind gusts of 62 mph were recorded from 3:30 PM through 3:34 PM. Sustained winds of at least 40 mph each hour ended after 5:04 PM.

High Wind, Little Rocky Mountains

When
January 2, 2:32 PM MST
Where
Little Rocky Mountains forecast zone
Measured
56 kt (64 mph) measured gust
Reported by
RAWS
Coordinates
48.259, -107.913 (the zone’s center; the record gives no point)

At the Zortman BLM RAWS site (ALDM8), the first severe wind gust of 61 mph was recorded at 2:32 PM. The peak wind gust of 65 mph was recorded at 3:32 PM. Lesser, but still severe wind gusts continued through 4:32 PM.

What these are

High Wind
Sustained non-thunderstorm winds of 40 mph or more for an hour, or gusts of 58 mph or more.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Montana in 2020Every state in 2020This day in weather historyWarnings in Montana, January 2020

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 872718, 872726.