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Fire Weather Concerns Continue in California; Pattern Change Possible Later this Week

Low humidity and gusty winds will continue across portions of California through Monday, although the weather pattern may change by Wednesday with increasing rain chances. Elsewhere, chilly conditions will persist across the northern and eastern states with rounds of light snow over the Great Lakes and Northeast, while areas of rain develop in south Texas and the Gulf Coast. Read More >

Overview

June ended with two stand-out storms that produced similar damage in similar locations. Hardest hit were those across portions of Dewey, Stanley, Hughes and Sully counties, affected by high winds and large hail that pulverized crops. Read about the events that occurred during the early morning of June 27th and the evening of June 29th below.

June 27th 

During the late evening on June 26th, severe thunderstorms developed across portions of southwestern North Dakota and then tracked southeastward into across north central and central South Dakota during the early morning of June 27th. Large hail cut a swath of destruction to vegetation across portions of Sully and Stanley county, just north and east of Pierre, as was evident on satellite imagery in the days following. Additionally, 2-4+ inches of rain in a short period of time led to flooding and flash flooding  in some cases north of Pierre and near/in Oacoma. Several county roads were reported to be partially or completely submerged. 

June 29th 

Severe thunderstorms developed across northeastern Wyoming during the afternoon hours, and a very favorable environment allowed activity to persist long distances eastward without losing much intensity. The most intense of these produced tornadoes across and near the northern Black Hills, 4.5" diameter hail near Newell, SD, and measured 90 mph straight-line winds near Sansarc, SD. This storm traveled a staggering 420 miles. During the days that followed, a large hail scar that meandered from western to central South Dakota was visible on satellite imagery; countless acres of crop and ranchland had been pulverized by the large hail. 

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June 27th Radar Loop June 29th Radar Loop
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