Several counties in northeast and central Wisconsin have Winter Storm Warnings for up to 9"... including Menominee, Marinette, Door, Oconto, Forest, Florence, Shawno, Langlade, Vilas, Oneida, Lincoln, Marathon, Portage, Wood, Waushera, and Waupaca.
(Below) is the map of the watches, warnings and advisories in Wisconsin. The "Other Statement" in Minnesota is a Windchill Advisory for tonight... -30 to -40 windchill values expected up there.
The Hourly US Weather Statmap (above) shows the snow falling across the region at 8:00, with a pocket of heavier snow near La Crosse.
Lake Effect Snow tomorrow for the South Shore?
It's difficult to be exact, but there will be an opportunity for some lake-effect snow tomorrow after another arctic front goes through around 6:00. Winds will switch to the northwest, which is not terribly favorable for the Bayfield Peninsula, but better for Iron and Gogebic Counties. NWS Duluth is advertising that at least several inches are possible, but I think we'll have to wait and see how well the winds line up.
The story will definitely be the cold air! High temps will be several degrees below zero across the entire region by Saturday, with -10 to -20 for lows. Any wind will cause problems.
Current Snow Depth across the region.
The National Snow Analyses page of the National Operational Hydrologic Remote Sensing Center (NOHRSC) has great maps and data about current and archived snow depths, water equivalent, snowpack temperature, and extent.
The map (to the right) was compiled this morning, showing the Northern Great Lakes Region. The statistics are shown on their page: 89.7% of this region is snow covered, average snow depth is 7.1" and the maximum depth is 35.7".
Their pages are worth checking out, and cover all of the US, North America, and even the Northern Hemisphere!
Ice Advisory issued for Lake Superior...
Current surface water analysis (mapto the left) shows water temperatures between 36 and 40 degrees yet, with the average temperature at 38.26 F. Ice is building up around the edges as the water has been cooling.
The latest ice-cover analysis was from January 10th, and can be viewed here. Enough of the near-shore water has been iced over that as of yesterday (Jan 16th), near-shore marine forecasts from the NWS have been discontinued until March 18th.
This next arctic blast will freeze more of the lake over, possibly quite quickly. Thanks to Dirk for sending out an email, without his alert I would not have noticed an Advisory was issued for the western waters of Lake Superior.
from the NWS in Duluth:
...ICE ADVISORY FOR LAKE SUPERIOR SATURDAY THROUGH MONDAY...
TEMPERATURES ACROSS LAKE SUPERIOR WILL BE NEAR NORMAL TONIGHT THROUGH FRIDAY...BUT WILL BECOME MUCH COLDER FRIDAY NIGHT THROUGH MONDAY AS ARCTIC AIR SPREADS SOUTH ACROSS THE UPPER MIDWEST. OVERNIGHT LOWS TONIGHT WILL RANGE BETWEEN ZERO AND FIVE BELOW...PLUNGING TO 10 TO 15 DEGREES BELOW ZERO SATURDAY MORNING THROUGH MONDAY MORNING. AS A RESULT...RAPID ICE GROWTH IS EXPECTED TO OCCUR FRIDAY NIGHT THROUGH MONDAY IN THE BAYS AND SHELTERED AREAS OF WESTERN LAKE SUPERIOR.