Typhoon SanbaSeptember 13th, 2012 at 4:52 am by Bill Steffen under Bill's Blog, Weather
(click the graphic to enlarge) A major typhoon, called Sanba, looks like it’ll plow into South Korea. The Joint Typhoon Warning Center has Sanba ramping up to 140 knots (161 mph!), putting it into the “Super Typhoon” category. Check out the radar from Korea and Japan. Here’s the forecast discussion, the visible satellite the water vapor image, the infrared image (which is black and white and not red), heaviest rainfall, and South Korea weather observations. Typhoons that move north and then northeast in the Western Pacific can change the upper level wind pattern…creating a trough south of Alaska, a ridge over the Western U.S. (where it gets quite warm) and then a trough over the Great Lakes/Northeast. I think Sanba will do that, and that’ll mean a more general cool pattern for Michigan. We’ll be cooler than average for the middle of next week and beyond. Check out the trough the GFS has for the weekend of the 22nd-23rd. Here’s two more signs of a cool down on the way: The Arctic Oscillation goes negative…and the North Atlantic Oscillation goes negative.