29. Light snow overnight is finally tapering off, a cool-down by the weekend.
This is a radar screenshot (to the right) centered on Duluth, MN and shows the light snow across the region at 9:48 this morning.
I measured 0.4" of new snow this morning, with another 0.1" since morning. Ashland (Ashland County) and Port Wing (Bayfield County) reported 0.5" at 10:40, so amounts were light and much below the previously forecast 1 - 3 inches from this clipper.
Another shot of arctic air.
Temperatures will cool a bit behind this clipper, and then again behind another reinforcing shot on Friday.
Record low temperatures for my location on March 8th are -22 in 1943, so forecast temperatures around -10 will not be record cold, but chilly none-the-less. The 3:24 discussion from the NWS Duluth holds a bit of hope:
AT THIS TIME [FRIDAY'S SHOT OF ARCTIC AIR] LOOKS LIKE THE LAST ONE OF THE WINTER SEASON. A SHIFT IN THE OVERALL UPPER AIR PATTERN TOWARD QUASI-ZONAL APPEARS TO COMMENCE AFTER THIS SYSTEM DEPARTS.
The last of the arctic air?? I hope so!
Looking ahead a week.
The models show a high pressure building into the middle of the US early next week will bring quiet weather and some warmer temps. My Excel chart (above) shows the NWS forecast temperatures for my location for the next seven days. I'm excited about the possibility of rising above freezing by Monday and Tuesday.
This graphic (to the right), from SFSU, shows wind speeds at about 30,000 feet - the location of the jet stream - Saturday (the 8th) at 6:00. A trough over the eastern US will be moving east allowing a ridge over the west to move east. I have drawn in the black lines to show the jet stream and the brown circles/arrows to show movement.