Midday Update: Big North-South Variation In Tuesday PM Snowfall
November 4, 2013 — 2:01pm
On Edge. Here is the 12z 4km NAM solution, showing potential snow amounts across central and southern Minnesota and western Wisconsin. Note the sharp gradient from north to south, maybe 1-2" for the northern suburbs, as much as 3-6" in the central core of the metro, with some 5-8" amounts not out of the question far southern suburbs, closer to 10" from Redwood Falls to Le Center and Northfield with up to a foot from north of Rochester to near Eau Claire. We'll see, but I want to stress a few variables that will keep amounts down slight: ground temperatures are still mild, after a few days of 40s and 50s. So snow will initially melt on contact during the late afternoon hours. Precipitation will start out as rain, and the strongest vertical velocities with this system may slide just south of MSP. Bottom line: probably plowable Tuesday PM (especially south metro), but hardly Snowmageddon! Map: NOAA and Ham Weather.
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Well, at least it was better than Saturday. After a foggy (thundery) start the sun came out and temperatures reached the mid-80s. Up north severe storms erupted, even a few large and violent (PDS) tornadoes in Polk County. Yes, a bit odd for late August. Expect sticky sun today with another round of irritable storms later in the day. We cool off and dry out by midweek - more storms may be brewing next weekend, but not as formidable as what residents of Florida and the Carolinas are tracking.
I'm happy to report that today will be even nicer than yesterday! That's a pretty low bar, granted, but we should top 80F today with some sunshine, higher humidity and a few stray T-storms. 80s will be the rule this week, with warmer than average weather spilling into Labor Day weekend. The risk of a Gulf Coast hurricane seems to be increasing again - water temperatures in the Gulf are very warm, which may fuel a big storm within a few days.
Thursday was a breath of fresh air and today will be another fine day with blue sky, light winds and no rain (amazing). Showers and T-storms return late tonight into Saturday as the atmosphere tries to warm up again - Sunday should be sunnier, warmer and drier. Summer comes rushing back next week with more 80s, even a few 90s possible by the end of next week. Hermine impacting Florida and the Gulf Coast? Still a definite maybe, but the storm is a sloppy mess; it's unclear if and when conditions will be ripe for strengthening.
So long heat index, at least for a few days. Agreeable air, courtesy of Canada, will be with us for the next few days. Clouds build up this afternoon; Friday should be sunnier with less wind and temperatures more typical of late September. After a close encounter with Saturday showers temperatures mellow Sunday and summer heat returns next week. No, we haven't seen the last 90-degree warmth.
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