Tuesday, April 17, 2018

April 17, 2018

Temperature: 28°F
Dew Point: 18°F
Wind: N 8 mph
Clouds: Stratus

The polar vortex is still standing over the Great Lakes, creating a dip in the jet stream.

Figure 1. Jet stream at 250 hPa (earth.nullschool.net).

Continueing to assess, the forecast for the potential for more snow for Wednesday. The low pressure system will bring in another wave of snow. This snow will be followed by a high pressure system, that should most likely allow for some real spring weather (higher temperatures) to start.
Figure 2. Surface forecast for 2:00 AM EDT April 18, 2018 (intellicast.com).

The snow should begin in southwest MN after midnight and by about 7 a.m. on Wednesday snow should hit this area. The heaviest snow will be from morning into the afternoon, with winds NNW from 10-20 mph.
Figure 3. US Prevalent Weather For 8:00 AM EDT April 18, 2018 (wunderground.com).
Compared to recent events, Eau Claire could barely get an inch, other places could see 3", and there is a slight chance for Albert Lea to get over 6".
Figure 4. Expected snowfall (National Weather Service - Twin Cities). 

Hopefully, after this mess temperatures will rise and the snow will stop.

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