SNOW TIMELINE: 3 to 6 inches expected in Minneapolis-St. Paul - KMSP-TV

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SNOW TOTALS: 4 to 6 inches across Twin Cities metro

Posted: Updated:
Meteorologist Cody Matz Meteorologist Cody Matz
MINNEAPOLIS (KMSP) -

The Presidents Day snowstorm dumped 4 to 6 inches across the Twin Cities metro on Monday.

SNOW REPORTS (INCHES)

Chanhassen: 6.3
Maple Grove: 5.2
St. Cloud: 5.1
MSP Airport: 4.6
Eden Prairie: 4.5
Lakeville: 4.3
Mankato: 4.0

TIMELINE

6 a.m. to 10 a.m.: Heaviest snow hits at rates of up to 2 inches per hour

10 a.m. to noon: Snow tapered off to light flakes

Monday afternoon: Sky cleared to some sunshine with highs into the mid-30s

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HOW A SNOWFALL FORECAST IS MADE

If you are curious at how we determine a snowfall forecast, here's a glimpse. 

Forecasting computer models output snowfall maps that show what they think will happen.  There is clearly more involved, however here are some of the things we look at.  The following images are from 3 different forecasting computer models with the legend on the bottom of each graphic.

First take note that they are ALL different.  Each computer model (and us for that matter) has to account for timing, intensity, moisture, volume of snow growth region, and a host of other variables to come up with these expected totals. 

This is why we forecast in ranges like 3 to 6 or 2 to 4, because it is impossible to account for everything.  Not to mention, if even one of these variables is off, then actual snowfall will change. 

It's always harder than it looks!

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