TuesdayJune 10th, 2014 at 3:31 am by Bill Steffen under Bill's Blog, Weather
This is the MODIS Lake Michigan satellite picture from Monday (from NOAA Coastwatch). It’s clear over Lake Michigan. The prevailing wind was mostly east and light. You can see the cumulus development right up to the water from Muskegon down to Indiana. North of Muskegon, a WNW lake breeze developed, so there were no cumulus clouds along the immediate lakeshore north of about Muskegon/Whitehall. Sometimes with a general east wind and a lake breeze from the west, the convergence of air where the west wind meets the east wind can trigger a line of showers or thundershowers. However, the air was too dry for that yesterday. You can see the effect of the east wind off Lake Michigan in Wisconsin, where there are no cumulus clouds within about 30 miles of the lake.
This has been a nice month weatherwise so far. In Grand Rapids over the last week, the average high temperature has been 77.6 and the average low temperature has been 55.7. For the last 6 days, the average wind speed has been only 5.5 mph. So far this month, we’ve had 76% of possible sunshine. That figure will go down a bit with more cloud cover today and tomorrow. Much of today will still be dry, but by late in the day, rain will be pushing up across the area from south to north. The NAM model (caribou) gives G.R. 0.27″ of rain, Kalamazoo gets 0.95″ and Ludington gets 0.14″ on that model. The GFS plot has 0.85″ for G.R. The European gives G.R. 0.86″ and 0.46″ for Big Rapids. We have a chance of a non-severe thunderstorm, but much of the precipitation will just be plain rain. A weak front could touch off another shower or t-shower here early or late Thursday. Friday and Saturday look dry and pleasant. We’ll have to throw in a chance of a shower for late Sunday and there will be a chance of showers and storms next Monday. Most of the weekend will be dry. Friday night will be the coolest, probably down between 45 and 50 in most areas. The European model takes the 850mb temperature to +2.3° C Friday AM – if we are that cool, it’ll be hard to get out of the 60s Friday PM.
Also, we have Tropical Storm Cristina off the SW coast of Mexico. Check out the supercell t-storm in Rethel, France. All-time record ice extent in Antarctic. This is kind of neat: Tornado Frequency by Longitude.