Tornadoes are running at above-normal levels across the nation so far this season and there is the potential for another severe weather outbreak at the end of this week. In much the same manner as at the end of the last week, the atmosphere will become very unstable by Friday night in the Mississippi Valley region with a multitude of ingredients coming together including vigorous upper-level support, an intrusion of warm, humid air from the Gulf of Mexico, and an influx of cold, dry air from the north and west. A similar weather pattern late last week resulted in an outbreak of tornadoes across Mississippi and Alabama that tragically resulted in the death of at least 26 people. The powerful cold front that will play a major role in the late week severe weather threat in the Mississippi Valley will plow through the Ohio Valley and into the eastern states on Saturday possibly resulting in damaging wind gusts of 50-60 mph in those sections of the country.
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High pressure will edge into the Mid-Atlantic region from later today into Wednesday and then a cold front will slide through on Wednesday night. Following the frontal passage, it’ll be quite chilly on Thursday, but then it turns milder on Friday with the chance of PM showers. The weekend will feature the passage of a strong cold front on Saturday night and there will be big temperature differences between Saturday and Sunday. Windy and warm conditions are likely on Saturday ahead of a strong cold front with highs near 70 degrees and there are likely to be occasional showers…maybe even a strong thunderstorm. There is the potential on Saturday for damaging wind gusts as the strong cold front first approaches and then passes through the region. Despite some sunshine on Sunday, it’ll be noticeably cooler following the frontal passage with temperatures some 15-20 degrees lower than on Saturday and there will likely be a stiff NW breeze as well.
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Major League Baseball’s Opening Day for all thirty teams is this Thursday, March 30th and it looks like it may be quite chilly in two parts of the nation with below-normal temperatures for several games. One region that is likely to feature colder-than-normal conditions is the Northeast US/Mid-Atlantic following the passage of a mid-week cold frontal system and a second region is the western US where it has been quite chilly for weeks compared to normal. In the Northeast US/Mid-Atlantic region, home openers include the Boston Red Sox, New York Yankees, and the Washington Nationals. California will host three opening games on Thursday in Oakland, Los Angeles and San Diego and temperatures are likely to be below-normal all the way down to the Mexican border. This will be an interesting year for big league baseball as there will be major changes to the game including the restriction of the defensive shift, bigger bases, and – for the first time ever – the usage of a time clock.
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After a brief visit by high pressure to close out the weekend, a fast-moving low pressure system will bring us occasional rain or drizzle late this afternoon and evening. Temperatures are likely to be confined to the upper 50’s for highs today and for the next few days as well. It turns warmer later in the week and the weekend could actually start off with temperatures near 70 degrees; however, it’ll be very windy on Saturday with showers likely as a strong cold front approaches the region.
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A cold front slipped through the region in the overnight hours and today will feature a chance of showers as was the case on Thursday, but it’ll be noticeably cooler with the development of a N-NE low level wind. The unsettled weather will continue into the weekend as low pressure pushes along a nearly stationary frontal boundary zone and it’ll bring more rain to the area and maybe a thunderstorm or two. High pressure pushes in for the second half of the weekend and sunshine should return booting temperatures to slightly milder levels by Sunday afternoon.
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We are now a few days into spring season and the active weather pattern that lasted through much of the winter across the nation looks like it can continue well into the month of April. California was pounded by yet another storm on Wednesday that the state brought heavy rain, significant snow, and even a rare tornado to the Los Angeles metro region. Some severe weather is possible later Thursday across Texas and Oklahoma, but it is even more likely from later Friday into Friday night across the Lower Mississippi Valley. Meanwhile, in the colder climate of the northern US, there can be accumulating snow this weekend in the Upper Midwest and then upstate New York/northern New England. And finally, while still in the speculation phase, this active weather pattern may result in strong new storms near both coasts by the middle of next week.
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The next few days will be quite unsettled in the NYC metro region with a frontal system acting as the catalyst for occasional showers today, tonight, tomorrow and on Saturday as well. It becomes quite mild today, but following a late night frontal passage, temperatures will drop to noticeably cooler levels for Friday and Saturday. The front will settle just to the south of here and its boundary zone will act as a conduit for low pressure to move through early this weekend. Once the low pressure system passes by to our northeast on Saturday night, drier will push into the region to close out the weekend and sunshine should return on Sunday.
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Spring has officially sprung and there is some quite mild weather expected during the next couple of days in much of the eastern half of the nation. There are signs, however, that point to additional cold air outbreaks into at least the first week of April from the Northern Plains to the Mid-Atlantic/Northeast US. The overall weather pattern across North America still features some high-latitude blocking over northern Canada and Greenland and this, in turn, is allowing for the transport of colder-than-normal air masses on occasion into the northern US from Canada. One of the consequences of additional cold air outbreaks is the high likelihood for additional accumulating snow events across the northern states and also the threat for severe weather outbreaks in the southern US. This pattern of normal to below-normal temperatures has been pretty commonplace during the last ten years in the months of March and April in the region from the Northern Plains to the Mid-Atlantic/Northeast US.
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High pressure pushed offshore on Tuesday and milder air has pushed into the Mid-Atlantic region as a low-level southwesterly flow formed on the backside of the anticyclone. As with most recent warm-ups, the warm up will become accompanied by shower activity beginning as early as late tonight and perhaps lasting right through much of the day on Saturday. By Saturday night, a cold front will pass through the region and drier air should follow to close out the upcoming weekend.
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High pressure over the Mid-Atlantic region will push offshore later today and this will open the door for much milder air to push into the area from the southern states. As with most recent warm-ups, the milder weather will be accompanied by an increasing chance of showers during the second half of the week. A warm front will lift north of the area on Wednesday and a residual frontal boundary zone will act as a conduit for additional waves of low pressure later in the week. As a result, it’ll stay unsettled around here with occasional showers from later tomorrow through the day on Saturday at which time a cold front should pass through the area.
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