Montana, 2020

Cold in Montana, January 15 to 16, 2020

January 15 to 16, 2020 · NWS GGW · 9 events in 9 counties and zones

The very large and very cold arctic air mass from the Canadian Rockies from the day before lingered over entire region. With plenty of clearing skies, gusty winds easily resulted in wind chill values lower than 40 below zero for many northeast Montana locations.

Where it happened

Every event with a place to put it; 9 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

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
9

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.

The very large and very cold arctic air mass from the Canadian Rockies from the day before lingered over entire region. With plenty of clearing skies, gusty winds easily resulted in wind chill values lower than 40 below zero for many northeast Montana locations.

The radar

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

Open the radar archive at this moment

Event by event

9 cold/wind chill. Local standard time, as filed.

Cold/Wind Chill, Central and Southern Valley

When
January 15, 6:50 PM MST to January 16, 5:15 AM MST
Where
Central and Southern Valley forecast zone
Reported by
Mesonet
Coordinates
48.365, -106.667 (the zone’s center; the record gives no point)

At the BLM Vandalia N mesonet site (MTM34), temperatures of -10 to -16 combined with wind speeds of 18 to 46 mph to create wind chill values of -40 to -44 for 6 hours from the late night of the 15th to the early morning of the 16th. In addition, at the Saint Marie MARCO site (07MT), temperatures of -12 to -22 combined with wind speeds of 6 to 32 mph to create wind chill values of -40 to -45 for more than 9 hours from the evening of the 15th to the early morning of the 16th.

Cold/Wind Chill, Central and Se Phillips

When
January 15, 8:15 PM MST to 10:35 PM MST
Where
Central and Se Phillips forecast zone
Reported by
Mesonet
Coordinates
48.259, -107.913 (the zone’s center; the record gives no point)

At the Malta AIRNOW mesonet site (A3570), temperatures of -19 to -28 combined with wind speeds of 10 to 18 mph to create wind chill values of -44 to -52 for 10 hours from the night of the 15th through the early morning of the 16th. In addition, at the Malta airport AWOS site (KM75), temperatures of -15 to -17 combined with wind speeds of 11 to 16 mph to create wind chill values of near -40 to -42 for about 2 and 1/2 hours on the night of the 15th.

Cold/Wind Chill, Western Roosevelt

When
January 15, 8:18 PM MST to January 16, 6:30 AM MST
Where
Western Roosevelt forecast zone
Reported by
Mesonet
Coordinates
48.295, -105.016 (the zone’s center; the record gives no point)

At the Poplar airport mesonet site (KPO1), temperatures of -17 to -20 combined with wind speeds of 8 to 18 mph to create wind chill values of -40 to -44 for more than 7 hours from the late night of the 15th through the early morning of the 16th. In addition, at the Poplar RAWS site (POPM8), temperatures of -16 to -23 combined with wind speeds of 9 to 27 mph to create wind chill values of -40 to -46 for about 10 hours from the evening of the 15th through the early morning of the 16th. Also, at the McDonalds MT-13 DOT site (MTMCD), temperatures of -14 to -21 combined with wind speeds of 9 to 26 mph to create wind chill values of -40 to -46 for almost 6 hours from the late night of the 15th through the early morning of the 16th.

Cold/Wind Chill, Northern Valley

When
January 15, 9:47 PM MST to January 16, 6:00 AM MST
Where
Northern Valley forecast zone
Reported by
Mesonet
Coordinates
48.365, -106.667 (the zone’s center; the record gives no point)

At the Glentana mesonet site (F2113), temperatures of -16 to -24 combined with wind speeds of 6 to 21 mph to create wind chill values of -40 to -45 for more than 8 hours from the night of the 15th through the early morning of the 16th. In addition, at the Bluff Creek RAWS site (BLUM8), temperatures of -22 to -25 combined with wind speeds of 9 to 14 mph to create wind chill values of -45 to -47 for more about 5 hours on the night of the 15th. Also at the Honrud mesonet site (E5606), temperatures of -17 to -19 combined with winds speeds of 8 to 23 mph to create wind chill values of near -40 to -42 for about 2 hours in the early morning of the 16th.

Cold/Wind Chill, Eastern Roosevelt

When
January 15, 10:30 PM MST to January 16, 6:33 AM MST
Where
Eastern Roosevelt forecast zone
Reported by
Department of Highways
Coordinates
48.295, -105.016 (the zone’s center; the record gives no point)

At the US-2 @Stateline DOT site (MTSTA), temperatures of -12 to -20 combined with wind speeds of 7 to 30 mph to create wind chill values of near -40 to -45 for about 8 hours from the late night of the 15th through the early morning of the 16th.

Cold/Wind Chill, McCone

When
January 15, 11:50 PM MST to January 16, 6:50 AM MST
Where
McCone forecast zone
Reported by
Mesonet
Coordinates
47.645, -105.795 (the zone’s center; the record gives no point)

At the Fort Peck Dam mesonet site (GGWFP), temperatures of -13 to -15 combined with wind speeds of 20 to 39 mph to create wind chill values of -40 to -43 for 7 hours from the late night of the 15th through the early morning of the 16th.

Cold/Wind Chill, Sheridan

When
January 16, 12:29 AM MST to 7:16 AM MST
Where
Sheridan forecast zone
Reported by
Mesonet
Coordinates
48.721, -104.505 (the zone’s center; the record gives no point)

At the Comertown Turn-Off MT-5 DOT site (MTCOM), temperatures of -15 to -24 combined with wind speeds of 6 to 20 mph to create wind chill values of -40 to -47 for almost 7 hours through the early morning of 16th. In addition, at the Plentywood mesonet site (GGWPW), temperatures of -14 to -18 combined with wind speeds of 17 to 20 mph to create wind chill values of -40 to -44 for about 3 hours during the early morning of the 16th. Also, at the Medicine Lake RAWS site (MLKM8), temperatures of -17 to -22 combined with wind speeds of 10 to 19 mph to create wind chill values of -40 to -43 for about 4 hours in the early morning of the 16th.

Cold/Wind Chill, Richland

When
January 16, 1:00 AM MST to 7:00 AM MST
Where
Richland forecast zone
Reported by
Mesonet
Coordinates
47.788, -104.561 (the zone’s center; the record gives no point)

At the Sidney 201 AIRNOW mesonet site (A3696), temperatures of -16 to -22 combined with wind speeds of 10 to 15 mph to create wind chill values of -40 to -44 for 6 hours during the early morning of the 16th. In addition, at the Sioux Pass MT-16 DOT site (MTSOO), temperatures of -17 to -18 combined with wind speeds of 10 to 16 mph to create wind chill values of -40 to -42 for more than 3 hours during the early morning of the 16th.

Cold/Wind Chill, Daniels

When
January 16, 1:47 AM MST to 7:02 AM MST
Where
Daniels forecast zone
Reported by
Mesonet
Coordinates
48.784, -105.549 (the zone’s center; the record gives no point)

At the Navajo MT-5 DOT site (MTRED), temperatures of -18 to -24 combined with wind speeds of 6 to 17 mph to create wind chill values of -40 to -47 for about 5 and 1/2 hours during the early morning of the 16th. In addition, at the Scobey N MDA mesonet site (MTM78), temperatures of -16 to -19 combined with wind speeds of 12 to 24 mph to create wind chill values of -40 to -44 for almost 3 hours during the early morning of the 16th.

What these are

Cold/Wind Chill
Cold or wind chill below warning criteria that caused deaths, injuries or damage.

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 2026-10-01. Each event’s entry at NCEI: 875367, 875368, 875322, 875359, 875369, 875361, 875356, 875319, 875358.