Extreme rainfall gives way to drier skies tomorrow

Hopefully your sump pump is earning its keep today.

Torrential rains fell by the inch as expected this morning as a slow moving cold front stalled near the metro. The heavy rain bull’s-eye set up in the southeast metro from near Cottage Grove to River Falls, Wis., where 6.08 inches fell this morning.

  • 1 SSW River Falls [Pierce Co, WI] COCORAHS reports HEAVY RAIN of 6.08 INCH at 5:52 AM CDT —

The Kinnickinnic River in western Wisconsin spiked 5 feet this morning.

The storm total rainfall mode of the Twin Cities Doppler radar shows a swath of 2 inches to 3 inches across the metro. The 4-6 inch red zone is visible in the southeast metro.

Weather Underground

Woodbury in the east metro picked up over 4 inches this morning.

Here are more impressive rainfall totals from Twin Cities National Weather Service.

Here’s a wider look at rainfall distribution from this morning and a look at a drier forecast ahead.

Air mass transfusion

After the perfect Fourth of July weather, the Twin Cities topped out at 88 degrees Sunday. You probably noticed the dew point creeping up through the 60s Sunday. We topped out at a tropical 70 degrees early Monday morning.

Once the rain is done this afternoon, a fresh northwest breeze builds behind our inbound cold front. A fresh blue Canadian high pressure cell dives south into Minnesota Tuesday pushing heavy rains into the Ohio Valley.

National Oceanic and Atmospheric Administration

Your basement gets a chance to dry out over the next 72 hours. You’ll notice the dew points plunging tomorrow to October levels in the 40s. We inhale less than half as much moisture in our air mass Tuesday than we did this morning.

Weatherspark

Enjoy the drier and sunnier air mass starting tomorrow.

  • Cody Larson

    I’m not a fan of sticky weather so I welcome the lower dew points from Canada. Though I wonder if that means the smoke will be back?

    I remember as a kid these refreshing Canadian air masses brought brilliant blue skies in the summer. Unfortunately now it brings a much more hazy sky. Climate change at work perhaps and will it continue to be a trend?

  • Dan Donovan

    I just looked out of my St Paul home into a blue haze that sure smells like smoke. Kind of hard to breathe. Is this from the Canadian forest fires?

    • Keith Prusak

      I believe it must be. Seeing & smelling similar things on the West Side. Thankfully it cooled down enough to shut the windows for a while & turn on the air cleaners – hang in there!