Tuesday, April 21, 2015

Tuesday Evening Weather Update - Messy to [wintry?] weather coming?

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Updated: 2140z/17:40/5:40PM
-----------------------------------FORECAST---------------------------------
TONIGHT - Clear as weak high pressure builds over the area, lows in the mid 40's.
WEDNESDAY - Good start to the day with clouds rolling in the afternoon with light rain/rain showers and maybe some t-storms and possibly some hail if those upper air temps can stay cold enough throughout the afternoon/evening. Highs around 60° and lows cold in high 30's as a cold front passes in the evening.
THURSDAY - Cold for this time, highs in low 50's, windy and sunny with some passing clouds, chance of some snow flakes in the evening.... ;)
Friday - Highs around 50°, breezy, partly cloudy, chance of some snow flakes in the evening or early morning?.....
---------------------------FORECAST DISCUSSION-----------------------
Tomorrow! More thunderstorms and rain coming! not nearly as much as yesterday, but still yucky weather. A strong upper jet and an upper low pinwheeling across the great lakes will converge with a cold front moving NE from the plains and give a nice band of showers and t-storms as a stronger surface low develops to the north of us, but this development will occur for the main part once to the east of us...SO, for now scattered showers and some t-storm mainly between 2pm and 6pm (t storms closer to evening). Some hail could mix in as high lapse rates and cold temps aloft will aid in that process. Do not discount some gusty winds as well.



Interesting setup for the next 10 days at least in terms of our sensible weather! Blocking should begin to develop over Greenland over the next few days and into next week and a pretty darn stubborn cutoff low will sit just north of us for the weekend and into early next week allowing cold air to filter in, After Wednesday and pretty much for the next 10 days we will be experiencing below average temperatures anywhere from -5° to -10° departure from average temps...so 50's into low 60's. This is also in response with the NAO/AO going negative with the PNA and positive EPO/WPO.
Chances for some snow flakes/rain showers and cloudiness a possibility almost everyday until Monday as several surface lows move through the area, there are however other ways this can be combated and it might work out to our favor smile emoticon
The Euro and GFS are starting to hint at some sort of big storm that COULD affect the area late next week as NRG coming out of the Pacific, the differences right now is that the Euro wants to split that energy over the rockies and send it diving south into the southern Jet and then form to the south of us before moving towards the region, while the GFS keeps it in the northern stream and moves it right out and NE not affecting us as much...but definitely something to watch for.
Have a great day guys!

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