Strong Storms and a Big EarthquakeJune 23rd, 2014 at 2:53 pm by Bill Steffen under Bill's Blog, News, Weather
The Storm Prediction Center has issued a meso-scale discussion about the possibility of severe storms and a possible Severe T-Storm Watch. This covers area generally south of I-94 and mainly for isolated wind damage from straight-line thunderstorm winds. SPC says: “THE WARM SECTOR ACROSS ERN IL/IND/WRN OH IS HEATING AND DESTABILIZING…RESULTING IN MLCAPE VALUES OVER 1500 J/KG /PER RECENT MESOANALYSIS/. THE OVERALL SHEAR IS RELATIVELY WEAK ACROSS THE WARM SECTOR WITH UNIDIRECTIONAL SWLY FLOW LEADING TO GENERALLY LESS THAN 20 KTS OF DEEP-LAYER SHEAR…THUS…STORMS WILL GENERALLY STRUGGLE TO ORGANIZE. ONE EXCEPTION MAY BE ALONG/NEAR THE WARM FRONT LOCATED NEAR THE SRN LOWER MI BORDER.”
Quick update 7:40 pm – The only warning in effect snow is a Flood Warning for Berrien and Cass Counties…lightning trend is dropping significantly with these storms…from 4500 currently down to 550. The strongest return is along the Ionia/Clinton Co. border moving NE toward Alma. We have t-showers from Barry Co. along I-69 into Indiana. Nothing severe indicated now. We’re getting a sprinkle here at WOOD.
Trees down in Cass Co., estimated wind of 65 mph in Dowagiac, 55 mph wind gust at Schoolcraft, power lines down in White Pigeon, branch down near Klinger Lake in St. Joseph Co., minor wind damage at Buchanan in Berrien Co., 40-45 mph winds in N. Indiana, 2.35″ of rain at Three Oaks in Berrien Co., over 2″ at Sturgis, many roads flooded in E. Cass Co…I’m not anticipating widespread severe weather. Evening storms will be mainly SE of a line from S. Haven to G.R. to Alma. The I-94 corridor gets an evening t-storm with heavy rain and probably gusty winds. This area has also seen 3/4 to 2″ of rain already today, so additional rain will likely cause some flooding. Concentration of lightning in S. Ionia Co.
Also, 8.0 magnitude earthquake in the Aleutian Islands…it relatively deep – 71 miles underground. The depth and the very remote area would lead us to minimize the estimate of damage and the possibility of a significant tsunami.