Sunday, December 25, 2016

2 PM - Christmas Storm Update

/Issued 2:07 PM CST, December 25, 2016/

Precipitation has been expanding this afternoon in central and eastern Minnesota.  This band of precipitation, likely either snow or sleet should move into the Twin Ports sometime between 3:30-5 PM.

Upper Midwest radar loop through 1:15 PM CST today.  Source:

Pink=Mixed precipitation types

Future radar through late tonight per 17z HRRR model.  Source:

Widespread snow, sleet and freezing rain will move into northeast Minnesota and northwest Wisconsin later this afternoon, this precipitation will then continue through the evening and could be heavy at times.  Precipitation will then diminish from SW-NE after midnight as a dry slot lifts out of western-southern Minnesota.

South of that white line, midday temperatures are generally around 32-34 degrees.  North of that white line temperatures are in the 20s with teens in far northern Minnesota.

Scattered thunderstorms are possible in most of Minnesota and Wisconsin through tonight (Light green shaded area on map)  Expect heavy precipitation rates if thunderstorms occur.  Source:

Quite a bit of lightning already occurring this afternoon in parts of southwest Minnesota, South Dakota and Nebraska.  Data through 2 PM today, the most recent strikes show up in white.  Source:  AccuWeather

NWS hazards map.  Source:

Pink=Winter Storm Warning
Purple=Ice Storm Warning
Blue=Winter Weather Advisory

For Duluth:

-Patchy freezing drizzle will continue this afternoon with heavier snow and sleet moving in between 3:30 PM and 5 PM.

-Snow and sleet, possibly heavy at times will occur this evening with a transition to freezing rain possible after 7 PM.

-A few thunderstorms are also possible this evening.

-Strong east winds continue through early Monday morning -- Wind speeds in the 15-30 mph range with gusts possibly up to 40 mph.

-There is a chance that precipitation switches over to plain rain closer to Lake Superior or below the hill later this evening; But on top of the hill I'm pretty confident that precipitation will remain in a frozen form through late tonight.

-Snowfall and sleet accumulations of 2-5" are possible by late tonight; Ice accumulations ranging from 0.10"-0.30" are possible.

-There should be about a 6 hour window where temperatures climb to between 33-38 degrees in Duluth Monday morning (Right now this looks to occur between 12 AM-6 AM)  Temperatures will then fall into the 20s with wraparound snow showers and gusty west winds developing during the day on Monday.  Melting of the snow and ice is quite possible early Monday morning, but anything that melts will re-freeze as temperatures drop and snow showers move in.

-Scattered power outages are possible over the Northland tonight especially if ice accumulations become significant (Greater than 0.10")

Here's a link to Minnesota road conditions

Here's a link to Wisconsin road conditions