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Flash Flood Threat to Persist in the 4-Corners; Heat Threat in Several Regions

The threat of flash flooding will continue to exist into Monday across the Southwest into the the central Rockies as monsoon conditions persist. Dangerous heat will be in place across the Intermountain West, northern Plains, and into the southern Plains and Lower Mississippi River Valley into early week. Read More >

Overview

Strong afternoon thunderstorms developed across the higher terrain of western and southwestern Montana, before moving east-northeastward through the central and north-central portions of the state on Saturday July 13th, 2019 and again on Sunday the 14th.  The storms were able to intensify as they encountered an increasingly favorable thunderstorm environment ahead of them.  The primary threat with the storms was damaging winds and large hail, with Sunday the 14th being the day with the most widespread impacts.  One of the hardest hit areas was the north side of Great Falls, where hail driven by wind gusts in excess of 60 mph caused property damage and knocked out power to portions of the city.

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Tree damage caused by severe wind gusts on the north side of Great Falls, Sunday July 14th, 2019. Photo Credit : Nick Langlieb
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Heavy rain and hail on the north side of Great Falls, Sunday July 14th, 2019. Photo Credit : Arin Peters A tree branch falls to the ground after severe wind gusts impact the Great Falls area, Sunday July 14th, 2019. Photo Credit : Nick Langlieb Hail stones as large as 1 inch fell on the north side of great Falls, Sunday July 14th, 2019: Photo Credit : Francis Kredensor
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