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Areas from the High Plains to the foothills of the Rockies along I-25 will be at risk for damaging thunderstorms and flash flooding into Wednesday night.
In addition to the risk of flash flooding, there is the potential for some communities to be hit with large hail and damaging wind gusts.
According to Senior Meteorologist Bernie Rayno, "It is not uncommon for a couple of the strongest storms early on to produce a brief tornado in this situation."
Cities that are at risk for the storms include Dodge City, Kansas; Scottsbluff, Nebraska; Rapid City, South Dakota; Miles City, Montana; and Cheyenne and Casper, Wyoming. Eastern portions of the Denver and Colorado Spring, Colorado, metro areas are also at risk into Wednesday night.
During the late-day and evening hours, the storms could cause flight delays and those traveling along the I-25 corridor should be prepared for blinding downpours and locally strong wind gusts.
On Thursday, during the late afternoon and evening hours, storms will fire in the same general area as late Wednesday. However, the overall zone will shift a bit farther northeast. Most of the storms will be east of Denver, Colorado Springs and Cheyenne. Storms will reach northeastern Montana, western North Dakota and neighboring Canada.
On Friday, the locally severe storm zone will continue to shift slowly to the east. Thunderstorms are forecast to reach across much of Kansas, Nebraska and the Dakotas.
By the weekend, the risk of locally severe thunderstorms will focus over the Upper Midwest, including Minneapolis and Des Moines, Iowa.
Some of the storms will bring downpours to areas that have received excessive rainfall earlier this month. It is in areas from northern Nebraska to Iowa, eastern South Dakota, Minnesota and western Wisconsin that are at an elevated risk of new flooding as a result. With the downpours forecast toward the end of the month, some locations may end up with over a foot of rain for June and has the Mississippi River on the rise.
Meanwhile, some of the downpours will hit rain-thirsty locations of Colorado, Kansas, Oklahoma and northwestern Texas through the end of the week. Moderate to exceptional drought continues in this area despite some rainfall in recent weeks.
In parts of central and coastal Texas, tropical moisture has come into play. The repeating downpours in this zone have cause flash flooding problems even though rainfall is below average for the June. This trend will continue in part of the region into the end of the week.
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