A coastal low will impact the region tonight and Saturday. A digging upper level trough over the eastern US will interact with an area of low pressure moving up the coast. As the low moves up the coast, it will interact with the off shore high pressure system that retreats to the north. As a result, expect a wind driven, heavy rain event tonight (mainly after midnight) through Saturday morning for most places.
A new cold front will be crossing the Mid-Atlantic and Northeast through tonight as a large area of cool and dry high pressure noses across the Ohio and Tennessee Valleys and toward the Eastern Seaboard through Thursday and Friday. The cold air dropping southeast across the Great Lakes region through tonight and early Thursday is likely to result in some lake-effect rain and snow showers for areas downwind of the lakes.
A cold front will move across the region Thursday afternoon through Thursday night, interacting with tropical moisture from Michael, resulting in the threat of heavy rainfall. Showers, and possible thunderstorms, will develop Thursday afternoon and continue into Thursday night, resulting in moderate to locally heavy rainfall. Rainfall amounts are expected to average between 1 to 2 inches with locally higher amounts possible.
A western trough is going to build this weekend and multiple impulses will come off it to create a spring-like severe weather threat for the Plains. Day 1 of the thread.. low pressure embedded in strong southwesterlies aloft. Notice the weak winds over the western US with a very strong Pacific jet pushing in... As you can expect from early fall, moisture will certainly be present. 24 hours later, the cold front is about to stall out roughly at latitude 40N.
Hurricane Michael made an "unprecedented" landfall on the northern Gulf coast of Florida Wednesday afternoon (Oct. 10). Just as it came ashore, meteorologists with the National Hurricane Center (NHC) released data showing that the rapidly strengthening storm made landfall as the third-strongest hurricane in continental U.S. history. It edged out Hurricane Katrina, which devastated the Gulf coast in 2005.
A very active period is in store as disturbances move overhead every few days. Some snowfall is possible for higher elevations over the weekend while rain and thunderstorms will remain possible. Temperatures will also drop to below normal for much of next week. The next storm system will push a cold front into northern and central Utah tonight.
Active weather pattern continues through the entire forecast period. Models bring another trough across the Pacific northwest today and across our forecast area this evening into the day Friday. At the same time, the tail end of a jet speed max moves over the area tonight. Both the EC and GFS are showing a good deal of QPF across areas from about Sweet Grass County west and south between 6pm and midnight tonight
Post-tropical Leslie will bring winds to near hurricane-force to portions of Portugal tonight, and gale-force winds to portions of western and northern Spain later tonight through early Sunday. Please see products from your local meteorological service for more information on this hazard. Leslie is expected to produce total rainfall accumulations of 1 to 3 inches (25 to 75 mm) with localized amounts up to 5 inches (125 mm) across portions of Portugal and Spain.