Much colder air will pour into the region today on gusty NW winds following the passage of a late night strong cold front and temperatures are likely to slowly drop through the day from early morning levels. It’ll become bitter cold tonight and stay quite cold on Saturday and then attention will turn towards the southwest as moisture will ride northward out of the Gulf of Mexico and begin to head our way. At the onset of this late weekend precipitation event, it should be cold enough for some snow or perhaps a wintry mix, but then as milder air pushes in from the southeast, a changeover to all rain is quite likely. This changeover to plain rain will take place from southeast-to-northwest on Sunday and there can be small snow accumulations before the transition takes place; primarily, to the north and west of the District. Precipitation winds down by early Monday – perhaps with a change back to snow - and then a couple of cold and dry days will precede another precipitation event at mid-week likely to be in the form of rain.
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The next couple of weeks promise to be quite active in the Mid-Atlantic region with the likelihood of multiple precipitation events. The first event will take place late today into early tomorrow and it should feature rain changing to snow and there can be a brief burst of heavier snow in the wee hours of the morning as a powerful jet streak pushes overhead. The next precipitation event will take place from Super Bowl Sunday into early Monday and it could include snow or a wintry mix at the onset and then a changeover to rain in the DC-to-Philly-to-NYC corridor. Yet another system is likely to push more precipitation our way by the middle of next week and odds currently favor plain rain for that event.
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There will be an influx of milder air today ahead of an approaching cold front and temperatures should make it well into the 40’s this afternoon. Low pressure will form along this advancing frontal boundary zone and rain showers are likely to arrive later this afternoon and continue into the evening hours. As colder air pushes in later tonight, the rain is likely to change to snow before ending with a coating to an inch possible by morning and there can be ice pellets mixed in during the transition. Following the passage of the cold front, it’ll turn quite cold tomorrow and stay cold on Saturday and then snow and/or rain will threaten the DC metro region on Super Bowl Sunday. The rain/snow line will be close to the immediate I-95 corridor and a possible scenario is snow at the onset and perhaps at the back end and rain in between.
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The next couple of weeks promise to be quite active in the Mid-Atlantic region with the likelihood of multiple precipitation events. One of the main culprits to this unfolding active pattern will be a sharpening temperature gradient very cold air to our north and west and moderate air to our south and east. This “battle zone” region will feature many low pressure systems in coming days as the temperature gradient will become a natural draw for moisture.
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High pressure will be in control today in the Mid-Atlantic region, but it’ll be quite cold with highs confined to the 30’s. Tomorrow will see an influx of milder air ahead of an approaching cold front and temperatures should make it to near 50 degrees. Low pressure will form along the advancing frontal boundary zone and rain is likely to arrive here later in the day. As colder air pushes in tomorrow night, the rain is likely to change to snow before ending by early Friday morning. Following the passage of the late week cold front, it’ll stay quite cold on Friday and Saturday and then rain and/or snow will threaten the DC metro region on Sunday.
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Vigorous upper-level energy is moving overhead this morning and the result is some snow shower activity for the region and there can be a brief, heavier burst in some isolated spots with a quick coating. After a relatively mild start to the work week, temperatures today are going to hold in the 30’s as a new (and colder) air mass arrived in the overnight hours. High pressure will return to take control for the mid-week and then a strong cold front and associated low pressure system will arrive late in the work week and this could result in a “rain-changing-to-snow” scenario for Thursday night into Friday morning.
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The current stretch of generally warmer-than-normal weather in the Mid-Atlantic region that began a couple of weeks ago comes to an end this week and we’ll return to a more sustained colder-than-normal pattern for much of the month of February. One cold front will arrive late tonight and it’ll usher in a cold air mass for the next couple of days and then a second cold front will arrive by early Friday with another cold air mass to follow in its wake - each of these fronts can bring some snow to the DC-to-Philly corridor.
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A cold front passed through the region on Sunday and low pressure will form today along this frontal boundary zone. This low will push off the coast to our east, but a vigorous wave of upper-level energy will move overhead by early tomorrow morning and likely produce some snow in the region. Accumulations are possible early Tuesday on the order of a coating to an inch and there can be an impact on the morning commute. High pressure will return to take control for the mid-week and then a strong cold front and associated low pressure system will arrive on Thursday night and Friday with rain changing to snow possible.
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High pressure will remain in control of the weather as we end the work week, but it will shift to off the east coast by tomorrow and this will open the door for milder air in the Mid-Atlantic region on Saturday and Sunday. A strong cold front will then approach on Sunday and enhance our chances for rain showers and then it’ll turn much colder again for the early and middle portions of next week following the passage of this next front. Vigorous upper-level energy will drop southeastward across the Great Lakes on Monday and it’ll increase our chances for some snow or snow shower activity by Monday night and/or Tuesday as low pressure forms near the Mid-Atlantic coastline. Another brief warm up is likely to arrive here later next week only to be followed by another cold blast at the end of the week.
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High pressure remains in control of the weather in the Mid-Atlantic region and it’ll stay on the chilly side right through tomorrow. By the weekend, however, southwest winds will develop here as this system pushes off the coast and this movement will allow much milder air to flow into the region. A strong cold front will then approach on Sunday and enhance our chances for rain and then it’ll turn quite a bit colder again early next week following the passage of this next front.
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