Updraft® - Minnesota Weather News

Soaking rainfall chances growing by the weekend

Multi-inch rainfall totals possible?

Precipitation output forecast
Precipitation output forecast through Monday
European Centre for Medium-Range Weather Forecasts, via Pivotal Weather

There’s rain in the forecast.

Forecast models agree on dragging a slowly moving low-pressure system across the Upper Midwest this upcoming weekend.

The system will have moisture to work with from the Gulf of Mexico. The only real questions surround precise rainfall timing and distribution of the heaviest rainfall totals. Some locations could pick up welcome multi-inch soaking rains this weekend.

Here’s a look at the inbound system and rainfall potential.

The National Oceanic and Atmospheric Administration’s Global Forecast System model picks up on the notion of a potentially soggy system tracking into the Upper Midwest this weekend.

You can see multiple waves of scattered rainfall rotating around the system as it tracks through our area. The forecast model loop below runs between 7 a.m. Friday and 7 a.m. Sunday.

NOAA GFS model
Global Forecast System model between 7 a.m. Friday and 7 a.m. Sunday.
NOAA, via Tropical Tidbits

Forecast models are cranking out varying rainfall totals across Minnesota this weekend. That’s typical. Expect these precipitation forecasts to change as we move through this week. But the takeaway is that widespread rainfall is likely, and local multi-inch rainfall totals are possible with this system.

The European Centre for Medium-Range Weather Forecasts model has been cranking out several inches of rainfall for parts of Minnesota. Monday night’s run laid out as much as 3 inches across the Twin Cities area.

European model (ECMWF) precipitation output
Precipitation output forecast through Monday
European Centre for Medium-Range Weather Forecasts, via Pivotal Weather

NOAA’s Global Forecast System model suggests a more widespread inch of rain, with locally 2 inches or more across parts of central Minnesota and Iowa.

NOAA GFS precipitation output
Global Forecast System precipitation output forecast through Monday
NOAA, via Pivotal Weather

Of course, this system arrives on a weekend. But at this point in our deepening drought, I don’t think we have the luxury of being picky with rainfall timing.

We’ll take what we can get.