Flash Flood Risk. NWS Doppler out of Grand Forks is estimating some 6-10" rainfall amounts over far southeastern North Dakota and northeastern South Dakota, 2-3 month's worth of rain overnight. These storms are weakening, but still capable of some 3-6" rainfall amounts from near Wheaton to Breckenridge and Wheaton. More from the NWS:
BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 817 AM CDT MON AUG 15 2011
THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A
* FLASH FLOOD WARNING FOR... RICHLAND COUNTY IN SOUTHEAST NORTH DAKOTA... WILKIN COUNTY IN WEST CENTRAL MINNESOTA...
* UNTIL 800 PM CDT MONDAY
* AT 817 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. THE RADAR INDICATED 4 TO 6 INCHES OF RAINFALL HAD ALREADY FALLEN IN THE LIDGERWOOD AND HANKINSON AREAS.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... WAHPETON...BRECKENRIDGE...HANKINSON...LIDGERWOOD...WYNDMERE... ABERCROMBIE AND BARNEY.
MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT DRIVE YOUR VEHICLE INTO WATER OF UNKNOWN DEPTH. ONE OR TWO FEET OF WATER WILL FLOAT MOST CARS DOWNSTREAM.
Weakening Storms. NWS Doppler out of the Twin Cities at 11:23 am shows heavy showers and T-storms from Alexandria and Glenwood westward to Wheaton - drifting east/northeast - the bulk of the rain may stay just north of MSP early this afternoon.
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We're stuck in a soggy rut and we can't seem to get out. Thanks to March-like temperatures, scattered rare January rain showers have helped to keep the snow melt on. The result is fog and low clouds mixed with drizzle... Ugh, I feel like a wet dog. Check the blog for more details. -Todd Nelson
Mild temps and lingering light rain showers continue through the weekend. The mercury may dip just enough to coax a few wet flakes out the clouds on Sunday, but nothing will stick. We'll have a better chance of snow sticking early next week as a Pacific storm system moves into the Upper Midwest. Temps look fairly mild initially, which could make for sloppy event. Check the blog for more details. -Todd Nelson
Closer to home, we settle into a somewhat soggy weather pattern with scattered light rain showers over the next few days. There may be a few wet snowflakes mixing in, but with highs flirting with 40 degrees through the weekend, streets remain mainly wet. Check the blog for more details. -Todd Nelson
The next several days will be running nearly 50 degrees warmer than the sub-zero lows that we had less than 1 week ago. Daytime highs in the 40s with lows above freezing will continue to cut into the meager snow pack through the weekend. Scattered light rain chances Friday through Sunday will help to speed up the melting process, which means we're in for lots of puddles. Check the blog for more details. -Todd Nelson