Very strong and cold high pressure is anchored across southeastern Canada this morning and the day will begin cold and dry. Meanwhile, low pressure will be developing today along the Carolina coastline and then push northward to southeastern Virginia and then to the Delmarva Peninsula by early tonight. After that, the low will make a bit of a turn and push more to the northeast instead of to the north resulting in a position east of New Jersey by the late night hours. Snow or a mix of snow and sleet is likely to break out here during the mid-to-late morning hours and given the expected storm track, enough milder air will push in from the ocean to cause a changeover to sleet and freezing rain. Later tonight as the low shifts to the east, colder air should wrap around and cause a change back to all snow before the precipitation winds down late. The extended period of mixed precipitation will limit total snow accumulations in the District and nearby suburbs to 1-3 inches; 3-6 inches possible across the outer northern and western suburbs. There can also be a buildup of ice in many areas later today with the sleet and freezing rain as low-level temperatures will be hard pressed to rise above freezing. One last note, watch for "mesoscale" banding during this storm which could result in heavy bursts of precipitation and possible thunder.
Read More
A high impact storm is coming to the Mid-Atlantic/Northeast US at mid-week with significant snow for some, ice and rain for others and winds will become a big factor as well. The big cities along the DC-to-Philly-to-NYC corridor will have accumulating snow as well as a period of mixed precipitation and the heaviest snowfall amounts will be on the northwest side of the I-95 corridor. Rain will dominate in areas from coastal southern New Jersey to the southern half of the Delmarva Peninsula to southeastern Virginia.
Read More
A major winter storm is headed to the eastern US for the mid-week with significant ice and snow on the table. High pressure will continue to build into southeastern Canada today and it will result in a dry and very cold day here in the Mid-Atlantic region as we await a significant mid-week storm system. This next storm will likely begin here in the late morning hours on Wednesday with snow or a mix of snow and sleet. There is likely to be a changeover to sleet and/or freezing rain in the afternoon which will continue into the evening hours before a change back to all snow. An ice build-up is likely in many areas before the change back to all snow takes place tomorrow night. Current estimates of snow accumulations by daybreak Thursday are as follows (an it will be compacted by ice): 1-3 inches in the District, 3-6 inches in the N/W suburbs. Snow winds down early Thursday and the rest of the day will feature breezy and very cold conditions and snow showers are possible in the PM hours.
Read More
This will be a stormy week in the Mid-Atlantic region with two storms to deal with during the next few days. The first storm has already brought some heavy rainfall to the DC-to-Philly-to-NYC corridor and as colder air filters in from a strengthening high pressure system to the north, a changeover to snow is taking place from northwest to southeast. A second and high impact storm will arrive at mid-week and it is likely to result in accumulating snow, ice, rain and strong winds for the Mid-Atlantic region.
Read More
This will be a stormy week in the Mid-Atlantic region with two storms to deal with during the next few days. Today’s storm will feature rain and some of it will be heavy at times, but as colder air filters in from a strengthening high pressure system to the north, a changeover to snow is possible later in the day across the far northern and western suburbs. A second and more impactful storm will arrive during the mid-to-late morning hours on Wednesday and it will bring the region snow at the onset. The snow will likely change to a period of sleet, freezing rain and/or rain and then change back to snow at night. The period of mixed precipitation will limit total snow accumulations with preliminary estimates of 2-4 inches in the District, 4-8 inches in the nearby N/W suburbs, and 8+ inches in the far N/W suburbs. Snow showers will linger through the day on Thursday and it'll remain much colder-than-normal right into the upcoming weekend.
Read More
This will be a stormy week in the Mid-Atlantic region with two storms to deal with during the next few days. The first storm on Monday will begin with rain in all areas of the DC-to-Philly-to-NYC corridor, but as colder air filters from a strengthening high pressure system to the north, a changeover to accumulating snow is likely to take place in suburban areas to the north and west of the big cities. A second and powerful storm will arrive at mid-week and it is likely to result in significant snow, ice and rain for the Mid-Atlantic region with a mixture possible in parts of the metro areas, heavy snowfall to the north and west, and primarily rain near and along coastal sections of southern New Jersey and the Delmarva.
Read More
The interesting and active weather pattern of recent weeks will continue into at least the middle of the month with two storms on the table for this week in the Mid-Atlantic/Northeast. The first storm for the Mid-Atlantic/Northeast US will come on Monday and an even bigger threat comes at mid-week with the greatest potential impact. In fact, the mid-week storm could turn out to be a major snowstorm for a large part of the Mid-Atlantic/Northeast US. In the short term, the weather remains mild during the next couple of days in much of the eastern half of the nation, but a colder air mass is going to filter into the northeastern quadrant of the nation on Sunday night and Monday following the passage of a cold front - setting the stage for a very wintry week.
Read More
The interesting and active weather pattern of recent weeks will continue into at least the middle of the month with two storm threats on the table for next week in the central and eastern US. The first storm threat for the Mid-Atlantic/Northeast US will come during the early part of next week and an even bigger threat comes at mid-week with the greatest potential impact. In fact, the mid-week storm could turn out to be a major snowstorm for a large part of the Mid-Atlantic/Northeast US. In the short term, the weather turns milder in much of the eastern half of the nation, but a colder air mass is going to filter into the northeastern quadrant during the early part of next week following the late weekend (uneventful) passage of a cold front.
Teleconnection indices such as the Arctic Oscillation (AO) and North Atlantic Oscillation (NAO) are supporting the idea of “high-latitude blocking” to get well-established by the middle of next week which, in turn, supports the idea for strong high pressure to build across southeastern Canada – always a key factor to the prospects of getting accumulating snowfall in the I-95 corridor. In this time period, two separate waves of energy will cross the southern states and then move northeastward towards the Mid-Atlantic coastline. With a cold air source building to the north across the southeastern part of Canada by the middle of next week, this type of setup could result in significant accumulating snow for at least parts of the Mid-Atlantic/Northeast US.
Read More
High pressure has taken control of our weather and will result in milder conditions around here as we head into the weekend. Low-level winds will shift to a southerly direction today as the high shifts off the eastern seaboard and we’ll stay mild on both weekend days just ahead of the next cold frontal system. The weekend cold frontal passage will be accompanied by a few showers and then a colder air mass will build into the region early next week. The overall weather pattern will remain very active next week with two storm threats to monitor - one on Monday and the second on Wednesday - and enough cold air will be around to allow for the possibility of snow getting involved especially at mid-week.
Read More
The interesting and active weather pattern of recent weeks will continue into at least the middle of the month with multiple storm threats on the table for next week in the central and eastern US. The first storm threat for the Mid-Atlantic/Northeast US will come during the early part of next week and perhaps the bigger threat comes at mid-week. The weather turns milder over the next few days in much of the eastern half of the nation, but a colder air mass is likely to arrive in the northeastern quadrant during the early part of next week following the late weekend passage of a cold front. Teleconnection indices such as the Arctic Oscillation (AO) and North Atlantic Oscillation (NAO) are supporting the idea of “high-latitude blocking” to get established by the middle of next week which, in turn, supports the idea for high pressure to build across southeastern Canada. At this same time, two separate waves of energy are likely to cross the southern states and move northeastward towards the eastern seaboard. With a cold air source building to the north across southeastern part of Canada, this type of pattern could result in accumulating snow in at least part of the Mid-Atlantic/Northeast US.
Read More
