Wet HalloweenOctober 28th, 2013 at 3:46 am by Bill Steffen under Bill's Blog, Weather
The overnight European model predicts a total of 2.09″ for G.R. from Weds. evening thru Thurs. evening. The GFS has 1.19″ from Weds. thru Thursday evening. It looks breezy with temps. reaching the low 60s ahead of the cold front. At least we won’t see the storm that NW Europe is having…gusts to 59 mph in London, England – many flights, trains cancelled – many trees down in S. England. The peak gust was 99 mph at Needles, Old Battery, Isle of Wright with 81 mph at Portland. The English Channel Buoy is showing 16 foot waves. Here’s a tree down on a London bus. More London wind damage. Farther south, a nice pic. of Mt. Etna erupting Friday in Italy. Video of a waterspout off Houston. Here’s SPC thunderstorm outlooks for the next 5 days. Boating season not quite over yet.
From the Storm Prediction Center: “DAY 4/THURSDAY…ALTHOUGH THE EXACT DEGREE OF DESTABILIZATION IS UNCERTAIN…A SEVERE /DAMAGING WIND AND PERHAPS TORNADO/ RISK CANNOT BE DISCOUNTED FOR ADDITIONAL PORTIONS OF THE OH VALLEY/NEARBY GREAT LAKES. THIS INCLUDES THE POSSIBILITY OF A STRONGLY FORCED/LOW-TOPPED CONVECTIVE LINE IN ASSOCIATION WITH ROBUST VERTICAL SHEAR/FORCING FOR ASCENT.
A strong temperature contrast will fuel the mid-week storm. High temperatures Monday included just 20 at Cut Bank MT and 21 at Calgary, Canada and Great Falls MT, 28 at Dickinson and Minot ND, Rapid City SD and Douglas WY. Denver struggled to only 37, while Garden City Kansas about 300 miles ESE reached 73. The high was 36 in Duluth and 37 in S. Ste. Marie.