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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“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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It is currently about as cold as it ever gets during the month of April in the Northern Plains and Upper Midwest and it’ll turn much colder here in the Mid-Atlantic region this weekend following a brief spike in temperatures this afternoon. In fact, temperatures here this weekend will be some 20-25 degrees below normal for this time of year and this seemingly never-ending colder-than-normal weather pattern is likely to continue into at least the second half of the month. A strong cold front will push through the region later tonight and usher in the next cold air mass for the weekend and a couple waves of low pressure will form along the frontal boundary zone on Saturday making snow an on-going threat in parts of the I-95 corridor.
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An active and cold weather pattern will continue for the Mid-Atlantic region into the middle of next week with additional cold air outbreaks and the threat for more early spring snow. After a blustery and cold day today, a “clipper-like” low pressure system will drop southeastward across the Great Lakes on Friday and it will bring some rain and snow shower activity to the Mid-Atlantic region. This system will drag a cold front through the area and much colder-than-normal air will flood the region for the weekend after a brief warm up on Friday afternoon. A wave of low pressure will form along this cold frontal boundary zone and likely throw some snow into the I-95 corridor on Saturday, but it doesn’t appear to be a significant event. Yet another low pressure system may impact the Mid-Atlantic region in the early part of next week.
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A very active weather pattern is bringing the I-95 corridor intense winds today associated with a strong cold frontal system and there may be another round of springtime accumulating snow this Saturday for parts of the region. Winds could gust past 50 mph this afternoon and early evening following the passage of a strong cold front as a fresh cold air mass rushes into the region. On Thursday, it’ll be blustery and quite cold for this time of year and the winds will start off the day quite strong though they will likely diminish during the mid and late afternoon hours. A “clipper-type” low pressure system will then bring rain and snow showers to parts of the I-95 corridor on Friday and also push a cold front through the region. This front will usher in very cold air for this time of year and low pressure will form along the stalling frontal boundary zone and likely generate some accumulating snow in the DC-to-Philly-to-NYC corridor.
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The overall weather pattern in the Mid-Atlantic region will remain colder-than-normal into at least the middle of April, but that doesn’t mean every single day will be below-normal. In fact, temperatures on Wednesday will jump into the 60’s in the DC-to-Philly-to-NYC corridor ahead of a cold front which could generate thunderstorms and strong wind gusts, but then much colder air returns for tomorrow night and Thursday. Another strong cold front will arrive on Friday and low pressure will likely form early in the weekend along this frontal boundary zone as it stalls out just south of here. This system could very well produce accumulating snow in the I-95 corridor on Saturday and that may not be the last threat of snow in this seemingly never-ending active and cold weather pattern.
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This is no April Fool’s joke…accumulating snow is coming to much of the I-95 corridor late tonight and early Monday. There have been two threats to monitor for this upcoming week in terms of the potential for snow and the first one is indeed going to result in accumulating snow and the second threat is still definitely on the table for next weekend.
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Temperatures at mid-day on Friday are near 70 degrees in the DC metro region and in the 60’s in the Philly and NYC metro regions, but next week continues to look quite different with colder-than-normal air masses headed our way. In additional to the colder air masses, there are two snow threats that will have to be monitored – one late Sunday night into early Monday and then another is possible at the end of next week or next weekend.
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There will be a noticeable warm up on Thursday in the I-95 corridor with 70+ degrees possible in the DC metro region and 60+ degrees in Philly, but then a cold front slides through the region on Friday and cooler air will arrive for the weekend. Another frontal system will arrive on Sunday and this will step us down a bit more in temperatures for the early part of next and there will be additional cold air outbreaks later next week. In addition to the colder pattern, we'll have at least a couple of low pressure systems to monitor in terms of snow for parts of the Mid-Atlantic region. One wave of low pressure could generate a swath of rain and/or snow on Monday and then a second - and perhaps stronger system - will need to be monitored for the latter part of next week or the following weekend.
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There will be a noticeable warm up over the next few days in the Mid-Atlantic region, but it looks like this will be just a temporary spring tease as colder-than-normal conditions are likely to return for the first ten days or so of April and some signs point to a colder-than-normal pattern continuing much longer than that - perhaps even into May. In addition to the cold, there will likely be some close calls with respect to snow in the I-95 corridor in April and it is just too early to give an all clear on that particular front.
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