Blaine storm history

MT Department of Emergency services reported $1,071,000 in damages to roads and bridges from the combination of rain and snow melt on the Fort Belknap Reservation in Blaine County.

BLM Cherry Ridge peak gust.

Peak wind gust measured by Ambient station PG Ranch.

Mesonet station FBLM8 Fort Belknap RAWS. Time of gust is estimated.

The river gauge Clear Creek near Chinook MT - USGS-06142400 showed water rose quicky rose above bank full due to a thunderstorm beginning late on the 27th. It crested to 8.36ft early on the 28th. The water receded back into it's bank shortly after in the early morning of the 28th…

Video on social media showed hail size up to 1.75 inches.

Ambient weather station DBR HQ measured a 63 mph gust.

Broadcast media reported minor flooding at the Blaine county fairgrounds. Standing water upwards of 6 inches in spots was reported.

RAWS sensor FBLM8 Fort Belknap measured a severe gust. Time was estimated given RAWS sensors only report one time per hour.

RAWS station LBCM8 Little Bullwhacker Creek RAWS. Time was estimated using radar given the sensor reports one peak gust per hour.

Trained spotter measured 0.11 inches of rain with the thunderstorm.

Report from Mping.

Report from Mping.

Mixed sized hail with the largest being quarters, which fell for about 10 minutes.

Lots of baseball sized hail with a few softball sized hail stones mixed in. Lots of wind was reported with the hail. Time approximated by radar. Reported by a storm chaser.

Facebook report with an image. Location estimated using radar.

Public report on Facebook. Egg to tennis ball sized hail caused damage to windows. Time estimated using radar.

Trained spotter reported 1 inch hail.

RAWS station FBLM8 Fort Belknap RAWS measured a 59 mph gust while lightning was in the area. Time was estimated using radar given this sensor only reports one time per hour.

Several photos submitted on social media of large hail in Chinook. Insurance company reported at least 11 vehicle hail damage claims and 5 homeowners claims. Number of claims likely increased since preliminary reports.

Photos submitted of hail being measured with a ruler as well as being compared to coins.

Blaine County Deputy EM reported golf ball size hail at their property.

Images submitted of large hail in Harlem.

Co-op observer reported hail of quarter size was covering the ground.

Water levels of Clear Creek near Chinook crested at 8.57 feet on June 4th, which is Major Flood Stage. At the time, this crest value was the third highest crest on record for this location.

Significant flooding occurred along the Milk River across Blaine County. The Rocky Boy SNOTEL station which is the main Milk River basin station peaked later than normal and had over 3.5 times the snow water equivalent that it normally would on April 6 (10.7' of snow water equiva…

Significant snowmelt resulted in flooding along Battle Creek, near Chinook. The creek crested on April 12th at 11.94 feet. Several roads across northern and central Blaine County were impacted as a result. Water was reported over Highway 2, west of Chinook, for a time. Runoff fro…

Significant snowmelt resulted in flooding along Clear Creek. The creek rose approximately four feet over a 24 hour period from April 8th to April 9th, before dramatically subsiding. A nearby reservoir about 3 acres in size filled and flooded within five hours. The river gauge for…

Hail around nickel sized. Time estimated via radar.

Trained spotter reported 61 mph wind gust.

AWOS station KS71 (Chinnok Airport) measured 60 mph wind gust.

Agrimet site HRLM measured peak gust of 58.3 mph.

Significant damage to a farm occurred. Two grain bins were destroyed, two roofs heavily damaged, barns heavily damaged, a few windows were reported to be blown out.

Reported half inch to golfball sized hail. mostly just heavy rainfall right now and calm winds.

Pictures relayed via social media of very large hail near Hays. Time of event from radar.

Twenty-four hour report from cocorahs.

Multiple sensors across Blaine county measured gusts equal to or greater than 58 mph, including mesonet station FBLM8 Fort Benton RAWS, which measured a gust of 68 mph.

Mesonet station MTM 52 measured 60 mph wind gust 7 miles SE Hogeland.

Multiple sensors measured gusts in excess of 58 mph on April 5, with the peak gust (72 mph) measured at mesonet station fblm8 Fort Belknap RAWS.

Wind gust of 62 mph measured at mesonet station mtm52 7.1 SE Hogeland (mt-meso).

Fort Belknap RAWS sensor reported wind gusts of 58 mph.

Mesonet station 13 S Fort Belknap measured a 52 kt (60 mph) non-thunderstorm wind gust.

Mesonet station 7 SE Hogeland recorded a -46F wind chill.

Chinook AWOS records a -39F wind chill.

Wind chill of -45 at Big Flat mesonet.

Awos station s719 chinook reports a wind chill of -45.

Coop Observer reports wind gust of 67 mph.

Chinook station measured a 52 kt (60 mph) non-thunderstorm wind gust.

Fort Belknap station measured a 63 kt (72 mph) non-thunderstorm wind gust.