By Alex Sosnowski
Additional drenching and severe thunderstorms over the Plains will not only foil holiday weekend activities through Monday, but will also put some lives at risk.
More downpours and strong thunderstorms will sweep from portions of the Dakotas to Iowa, northern Missouri, southern Minnesota and Illinois through the rest of the Memorial Day weekend.
While more drenching thunderstorms are erupting in and around Iowa, the latest round of severe thunderstorms will continue to ignite from eastern Montana and the western Dakotas to Nebraska through this evening.
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A narrow line of severe thunderstorms will also extend southward across the southern High Plains.
These thunderstorms will spread eastward across the central Plains tonight, producing more flooding downpours than damaging winds as the night progresses.
Close to 10 inches of rain has left some neighborhoods around San Antonio, Texas under water. A similar scene may evolve across the central Plains this Memorial Day weekend. Image by breakingweather Twitter follower kingfontenette.
More severe and drenching thunderstorms will follow for the northern and central Plains on Memorial Day.
In addition to the risk of lightning strikes clustering around a local area, there is the potential for additional flash and urban flooding.
That is especially true where the ground is severely saturated from recent rounds of thunderstorms. Any future downpours will have no trouble flooding poor drainage areas, overwhelming storm drains and causing rapid rises on small streams.
Earlier this morning, an area near Grinnell, Iowa, reported a 24-hour rainfall total of nearly 7 inches. Runoff from that rain inundated and made some roads impassable.
Seek shelter as the storms approach in a vehicle or building. Golf carts, tents, gazebos and picnic pavilions do not offer adequate protection from lightning. Avoid setting up camp in low lying areas along a small stream. During a downpour small streams can rise several feet in a matter of minutes.
Do not drive through flooded roadways. Flooding less than knee high can push your vehicle into deep water.
More on the Severe Weather
The majority of the severe thunderstorms that erupt through this evening will target places from eastern Montana and western North Dakota, southward into Nebraska. More isolated storms are expected southward to the Texas Panhandle and into Big Bend Country.
The storms in the narrow swath have the potential to bring large hail, damaging wind gusts, frequent lightning strikes and a short-lived tornado.
Memorial Day Severe Weather
During Monday, several ingredients will come together to enhance thunderstorms from eastern Montana and western North Dakota to Nebraska, northern Kansas, western Iowa and northwestern Missouri.
Dickinson, N.D., Rapid City and Sioux Falls, S.D., Omaha and Grand Island, Neb., and Russell, Kan., are among the communities at risk for the violent thunderstorms on Memorial Day.
Another line of isolated violent thunderstorms will also form from south-central Kansas to around Midland, Texas, later Monday.
In addition to the risk for large hail, strong wind gusts and power outages, a couple of tornadoes could be produced.
Severe Weather Outbreak Wednesday to Friday
It is looking more likely that there will be an outbreak of severe weather beginning Wednesday over the High Plains, spreading slowly eastward over the lower Plains and Mississippi Valley Thursday into Friday.
The outbreak would feature the full spectrum of severe weather and could include a number of tornadoes.
Additional details will soon follow on AccuWeather.com.
Thumbnail image shows clouds forming over a flooded intersection in San Antonio on Sunday, May 26, 2013. (AP Photo/Eric Gay)
AccuWeather.com Senior Meteorologist Kristina Pydynowski contributed to the content of this story.
More at AccuWeather-Drenching, Severe Storms into Memorial Day on Plains.