Prairie storm history

Co-op observer at 5N Mildred reported 6 inches of snowfall.

A trained spotter reported quarter size hail.

A trained spotter estimated wind gusts of 50 to 60 mph which broke off some tree limbs.

Public reported hail up to the size of quarters, lasting for 15 to 20 minutes.

Public reported golf ball size hail.

Trained spotter reported hail up to the size of quarters and heavy rain.

Public reported quarter size hail through the mPING system.

Public reported ping pong ball size hail through the mPING system.

Winds estimated to be at least 60 mph based on video posted to social media and tree limb damage reported by public.

County Emergency management shared multiple damage reports from the town of Terry, including downed branches from multiple trees, a downed main power line causing a power outage, a peeled tin roof at the local baseball field. Time is estimated. Wind speed estimated at 65 mph.

A wind gust of 58 mph was recorded at the BLM Terry mesonet site.

A wind gust of 69 mph was measured at the Big Sheep Mountain RAWS site (LCFM8).

D2 drought conditions were experienced across most of the county to begin the month. By the end of the month, the entire county had improved to D1, expect for the extreme northern edge of the county.

The D2 drought expanded to over most of Prairie county.

D2 drought increased through the month to encompass the central and eastern portions of Prairie County.

D2 drought over the eastern portion of the county continued through the end of the month.

Mesonet observations reported wind chills as cold as -43F (13NNW McCloud).

Observations reported wind chills as cold as -55F (Sheep Mountain).

RAWS and mesonet observations reported wind chills as cold as -50F (Big Sheep (13 NNW McCloud) and Buffalo Rapids).

Mesonet observations reported wind chills as cold as -43F (13NNW McCloud and 4NE Terry).

D2 drought conditions across the central portions of the county to begin the month, improved to D1. D2 remained in southeast.

D2 through D3 drought conditions continued across Prairie County to begin the month, before improving by the end of the month. However, D2 drought lingered over the eastern 2/3 of the county.

Three injuries occurred with this icing event in Prairie County. Interstate 94 was closed from Glendive to Miles City from 430 am to 10 am. Two of the injuries required emergency treatment. Emergency travel only, or severe driving conditions were noted on the Montana DOT 511 webs…

Visibility was a quarter mile or less for 4 hours with wind gusts frequently exceeding 35 mph. The peak wind gust was 62 mph.

D2 through D3 drought conditions continued across Prairie county through December.

D2 drought conditions were noted across the entire county to begin the month, and worsened to D3 drought across the eastern two thirds of the county by the end of the month.

On the third week of October, the far eastern border of Prairie County worsened to D2-Severe drought. On the fourth week of October the eastern two thirds of Prairie County worsened to D2-Severe drought. By the end of the month, all of Prairie County worsened to D2-Severe drought…

Prairie County DES estimated thunderstorm wind gusts of 60 mph.

Public reported, via Facebook, an estimated 60 mph thunderstorm wind gust.

Public reported that the wind lofted the roof of barn. Pieces of the roof were scattered up to half a mile away.

The BLM Terry mesonet site (MTM29) measured a 60 mph thunderstorm wind gust.

A peak wind gust of 59 mph was recorded at 11:30 AM at the Sheep Mountain MT-253 DOT site.

Across Prairie County, measured snowfall amounts ranged from 5.0 to 7.0 inches. The greatest amounts of 7.0 inches was reported by a CO-OP Observer at 5 N Mildred.

For multiple sites across Prairie County, temperatures in the teens to 30s below zero and breezy winds created intermittent periods of wind chills of 40 degrees below zero or colder from the early morning of the 12th to midday on the 15th. The peak wind chill of 62 degrees below …

A peak wind gust of 59 mph was recorded at 2:15 PM at the BLM Terry mesonet site (MTM29).

The BLM Terry Mesonet site (MTM29) measured a 58 mph thunderstorm wind gust.

The public reported, via social media, that an open faced barn (shed) had blown down. The shed was laying over a tractor, four wheeler and bike. Wind speeds were estimated at 70 mph, and the time of the event was estimated by radar data.

An emergency manager in Prairie County reported heavy rainfall caused water to flow over Interstate 94 at mile marker 181.

For multiple sites across Prairie County, temperatures in the teens and 20s below zero and breezy winds created intermittent periods of wind chills of -40 or worse from the morning of the 21st into the morning of the 23rd. The peak wind chill of -57 was recorded at 5:08 PM on the…

Across Prairie County, measured snowfall amounts ranged from 8.5 to 20.0 inches. The greatest amount of 20.0 inches was reported by a trained spotter at 14 NNE Ismay.

To start December, ongoing drought conditions in all of the northeastern two thirds of Prairie County were in (D2-Severe) conditions while the southwestern third of Prairie County was in (D1-Moderate) drought. On the third week of December, all of Prairie County had improved to (…

Across Prairie County, measured snowfall amounts ranged from 5.6 to 6.0 inches. The greatest amount of 6.0 inches was reported by public, via Facebook in Terry.

To start November, ongoing drought conditions in all of the northeastern two thirds of Prairie County were in (D2-Severe) conditions while the southwestern third of Prairie County was in (D1-Moderate) drought. These conditions would remain the same through the end of the month.

Across Prairie County, measured snowfall amounts ranged from 3.0 to 6.0 inches. The greatest amount of 6.0 inches was measured by a trained spotter at 10 WNW McCloud.

To start October, ongoing drought conditions in the northeast corner of Prairie County was in (D3-Extreme) drought, the rest of the northeastern two thirds outside the northeast corner were in (D2-Severe) conditions while the southwestern third of Prairie County was in (D1-Modera…

On the third week of September, drought in the northeast corner of Prairie County was in (D2-Severe) while the remainder of Prairie County was in (D1-Moderate) drought. By the last week of September the northeast corner of Prairie County had worsened to (D3-Extreme) drought, the …

A trained spotter reported hail up to the size of quarters.

A trained spotter estimated a thunderstorm wind gust of 75 mph.

A trained spotter reported hail up to the size of quarters.

Public reported, via Facebook, a thunderstorm wind gust estimated at 70 mph.