29. Sunday was cool but quiet, today (Monday) is turning out much the same but a little warmer.
The Upper Midwest has been under the influence of polar high pressure for the several days, but a clipper that is currently centered just north of North Dakota will slide our way tonight. Moisture is locked to our south by the southern branch of the jet stream and a developing storm across the Plain States. NWS Duluth only mentions some scattered flurries or light snow and forecasts the winds to be westerly behind the system, which would not provide for a lake-effect snow event.
The map(to the right)current surface weather conditions and frontal positions from The Weather Channel (TWC). The high pressure centered over western Illinois (1028mb) will be pushed eastward across the Ohio River valley and reach the coast by late Tuesday. Brief high pressure will build in behind the first clipper before a second clipper moves across the area on Thursday. Snow accumulations look possible with the second clipper, though the Gulf Of Mexico remains closed by cold fronts.
We finally have a break in all the snow we've been receiving across the Upper Midwest the last several weeks. A low pressure system organizing over the Southwest will kick out along the southern branch, tap into some Gulf moisture, pull in some of our cold air, and produce an ice storm from the Texas panhandle to Indiana. The map (to the left) is from Accuweather.
The second map is from TWC and better shows the locations expected to receive freezing rain and highlights were the heaviest ice may occur.
Normal-for-date: 10.9 / 28.0 Range: -24 to 38 / -4 to 55 Currently at 12:00:
Temp: 16.1 Dp: 7.7 Baro: 30.28 "Hg and falling Winds: light from the ENE WChill: not a factor Sky: clear and sunny And finally, a screenshot of my pressure for the last seven days. It's a little choppy, which may indicate that my weather station needs a firmware update, and ignore the little zig Thursday night... I re-calibrated elevation & sea-level pressure.
Friday, Saturday, Sunday, and now today -- we've been above 29.90 "Hg, maxing out at 30.588" Hg on 12/8 (Sat) at 21:15.