It’ll turn milder today compared to yesterday’s chill, but more unseasonably cold air is headed our way for the latter part of the week. Low pressure will trek across the northern states over the next couple of days and generate more accumulating snow for the Upper Midwest and Northeast US. This system will drag another cold front through our region and strong NW winds will pump in colder-than-normal air for Thursday night and Friday following some shower activity on Wednesday night and Thursday.
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A vigorous upper-level feature is dropping southeastward from the Great Lakes region this afternoon and headed right over the DC-to-Philly-to-NYC corridor. As a result, showers are breaking out generally in areas north of the PA/MD border and they should head towards Philly and NYC later in the day and a couple of showers could very well sneak as far south and east as the DC metro region. Much colder-than-normal air is entrenched in the region and there can be some snowflakes seen around the big cities later today into early tonight.
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Today will be a somewhat unsettled day with the chance for a rain and/or snow shower or two this afternoon and temperatures well below-normal for this time of year. High temperatures this afternoon will struggle to reach 50 degrees and the normal high is now 67 degrees at Reagan National Airport (DCA). In the overnight hours, temperatures will fall close to freezing in many spots which could do some damage to sensitive plants as a patchy frost may form. It’ll turn milder at mid-week for a brief period, but then another cool front will slide through the region and cool us down again to well below-normal levels once again by the latter part of the work week.
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A strong west-to-east moving cold frontal system is slowly working its way through the area this morning and the heavy, steady rain has evolved into a pattern of intermittent showers, maybe a residual thunderstorm. Much colder air will push into the region tonight and temperatures on Tuesday will be way below-normal for mid-April and struggle to reach the lower 50’s for highs. We’ll turn milder again at mid-week only to turn cooler again following the passage of another cool front by Thursday.
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A major warm up in the DC, Philly, NYC corridor will continue into Saturday, but then temperatures will come crashing down on Sunday as a strong back door cold front slides down the Northeast US coastline from northeast-to-southwest. A more conventional west-to-east moving cold front will then produce a heavy rain event around here on Sunday night and Monday and strong thunderstorms can be mixed into the picture as it turns somewhat milder on Monday ahead of the cold front. In fact, the rain may be so heavy early Monday morning that it could have a negative impact on the AM commute up and down the DC-to-Philly-to-NYC corridor. Much colder-than-normal air will follow the passage of the west-to-east moving cold front for Monday night and Tuesday and highs may struggle to reach the 50 degree mark on Tuesday afternoon.
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Temperatures will climb to 80+ degrees for highs both this afternoon and on Saturday in the DC metro region. It should turn a lot cooler on Sunday depending on the movement of a strong back door cold front that will be moving down the Northeast US coastline from northeast-to-southwest. A heavy rain event is likely here from Sunday night into Monday as a strong west-to-east moving cold front pushes in from the Midwest. There can be strong thunderstorms mixed into the picture as well during this heavy rain event and some locations in the I-95 corridor could end up with more than two inches by later Monday morning. This same cold front will likely result in a widespread severe weather outbreak today across the southern Plains and on Saturday in the Tennessee and Ohio Valleys. The next month or so could very well be quite active in those same areas with the possibility of numerous severe weather events.
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A major warm up will begin in earnest today as southwesterly winds pick up and temperatures climb well into the 70’s despite some clouds. Temperatures will climb to the 80 degree mark for highs on Friday and Saturday - perhaps even reaching the lower 80's in some spots. It could turn a lot cooler on Sunday depending on the movement of a back door cold front that will be moving down the Northeast US coastline. A heavy rain event is likely from Sunday night into Monday as a strong cold front pushes in from the west. There can be strong thunderstorms mixed into the picture as well and rainfall could exceed two inches in many I-95 locations by later Monday morning. This same west-to-east moving cold front will likely result in a widespread severe weather outbreak on Friday (southern Plains) and Saturday (Tennessee and Ohio Valleys) and the next month or so could very well be quite active with numerous severe weather events.
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“April is the cruelest month” so said T.S. Eliot many, many years ago. Just when it looks like spring has sprung for good and the winter cold is over, temperatures can change on a dime in the Northeast US during the early part of the spring. It is this time of year when temperatures can drop from the 70’s to the 40’s in a matter of hours in places like Boston, New York, Philly and DC if the “dreaded back door cold front” moves in from the northeast. In fact, this appears to be a strong possibility this weekend as a dramatic drop in temperatures may occur between Saturday and Sunday in at least parts of the I-95 corridor with southwest winds shifting to a northeasterly direction. By Sunday night, a deep upper-level low and a strong surface cold front will begin to approach the eastern states and this setup is likely to result in a heavy rain event for DC, Philly and NYC in the Sunday night/Monday morning time period and there can be strong-to-severe thunderstorms included. Following this heavy rain event, much cooler air will push in from the Midwest in a more conventional west-to-east direction, and it looks like it’ll stay colder-than-normal right into the latter stages of the month.
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Today will be another day on the cool side around here, but a major warm up will begin in earnest on Thursday as southwesterly winds pick up and temperatures climb to the 70’s. Temperatures will climb to the 80 degree mark for highs on Friday and Saturday - perhaps even reaching the lower 80’s on Saturday afternoon in some spots. It could turn a lot cooler on Sunday depending on the movement of a back door cold front and then soaking rain is likely from Sunday night into Monday as colder air pushes in from the west. That soaking rain on Sunday night/Monday may be accompanied by some thunderstorm activity as well as the overall pattern transitions back to colder-than-normal from the late week surge of warm air.
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There is a major warm up coming here later this week and for the weekend, but it will be just a temporary break in the overall colder-than-normal weather pattern that we have been experiencing for several weeks now. It stays chilly today and Wednesday with nothing more than lingering clouds this morning as low pressure pulls away from the coastline. The warm up begins in earnest on Thursday as southwesterly winds pick up in intensity and temperatures will climb well towards the 80 degree mark on Friday and Saturday. We'll transition back to colder-than-normal weather by the early part of next week and the transition won't come quietly as a heavy rain event is likely here from late Sunday into Monday and there may be thunderstorm activity as well. One final note, we'll have to watch for a possible back door cold front on Sunday which could generate much cooler conditions here compared to Saturday's expected warmth.
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