Another chilly day and night is in store for the region following the passage of a cold frontal system late yesterday and frost will be possible towards morning in far N/W suburban locations with clear skies and light winds. High pressure will push off the east coast by Thursday and this will result in some dramatic temperatures changes at week’s end. Temperatures will become warmer on Thursday as southwesterly flow develops in the lower part of the atmosphere and then they’ll soar on Friday to summer-like values near the 80 degree mark. With the significant warm up at the end of the work week will come an increased chances of showers and thunderstorms and the summer-like warmth will continue into the upcoming weekend.
Read More
Another cold shot is coming to the Mid-Atlantic/Northeast US for the first half of the week and it could lead to more record or near record low temperatures and the possibility of frost during the next couple of late nights. As with the remarkable cold air outbreak this past weekend, attention should be paid to sensitive vegetation with this unusual late season chill. The end of the week will bring about a dramatic turnaround and summer-like warmth is quite likely on Friday as a “Bermuda-high” type pattern develops over the eastern US and Atlantic Ocean.
Read More
The remarkable cold of the past weekend will give way to summer-like warmth at week’s end, but we have another cold air mass to go through before we get there. A cold front will cross the region today as low pressure deepens over New England. As a result, temperatures tonight and tomorrow night will fall back into the 30’s for overnight lows and frost will be possible by early Tuesday and again by early Wednesday. As another low pressure system approaches towards the end of the week, our temperatures will soar on both Friday and Saturday to the lower 80’s for highs and there will be a chance of showers and thunderstorms on both days.
Read More
A remarkable cold air outbreak is coming to the region for Friday night and Saturday and it will be accompanied by a rain-changing-to-snow event in many interior sections of the Mid-Atlantic/Northeast US. The weather will become quite a bit more active later today as a strong cold front advances this way from the Upper Midwest and low pressure begins to develop over the Tennessee Valley. This low pressure system will push along the southeastward-advancing cold frontal boundary zone and rain is likely to return to the region during the afternoon and evening hours. As colder air wraps into the system tonight, the rain is likely to change to snow in a good part of the Mid-Atlantic/Northeast US; especially, across interior higher elevation locations of upstate PA, NY and New England where accumulations are possible. In fact, there can be a changeover from rain-to-snow showers later tonight all the way into the suburban locations just to the north and west of metro region. This low pressure system will intensify dramatically by the time it reaches the Gulf of Maine on and a deepening pressure gradient will result in powerful winds to go along with the unusual cold. Winds on Saturday can gust to 50 mph or so raising the chance for scattered power outages. Looking ahead, the overall weather pattern that has resulted in multiple cold air outbreaks from Canada into the central and eastern US during the past several weeks is likely to finally break down during the third week of May, but we’ll have to endure some pain before we get to those expected warmer-than-normal conditions.
Read More
A remarkable cold air outbreak is coming to the northeastern quadrant of the nation for Friday night and Saturday and it will be accompanied by a rain-changing-to-snow event for many interior sections of the Mid-Atlantic/Northeast US. This cold blast is likely to result in some of the coldest daily temperatures ever recorded both at the surface and in the upper atmosphere and, in some cases, monthly temperature records may be set. In addition, some spots might see their latest measurable snowfall in the Friday night/Saturday time period. Some interesting notes…in Philadelphia, there has not been a temperature in the 30’s on May 9th or later in more than fifty years (1966) and it could happen on both Saturday (9th) and Sunday (10th) mornings. In Buffalo, the predicted temperature of -40°C this weekend at the 500 millibar level would shatter the previous record of -35.7°C for the entire month of May. In Baltimore, there has not been a measurable snowfall in the month of May since 1872 and the latest on record there is May 9th (1923).
In addition to the cold and potential snow, winds will become an important factor as well on Saturday with gusts past 50 mph on the table in the Mid-Atlantic/Northeast US and this will raise the chance for scattered power outages. Looking ahead, the overall weather pattern that has resulted in multiple cold air outbreaks from Canada into the central and eastern US during the past several weeks is likely to finally break down during the third week of May, but we’ll have to endure some pain before we get to those expected warmer-than-normal conditions.
Read More
Quite an amazing outbreak of cold air will arrive on Friday night and the cold frontal passage may actually be accompanied by a rain-changing-to-snow event in part of the Mid-Atlantic region – perhaps even in the higher elevation locations just to the north and west of the metro region. Saturday will turn out to be a very windy day with gusts possible to 50 mph and an unusually cold day for this time of year with temperatures perhaps 20+ degrees below normal. In addition to the wind and the cold, there can be a few rain and/or snow showers on Saturday as the atmosphere will be very unstable given the extremely anomalous upper-level low pressure system that will be sitting over the Northeast US. While Sunday, Mother’s Day, will remain colder-than-normal and get off to a very cold start, the afternoon will become much more bearable as there should be far less in the way of wind when compared to Saturday and some sunshine. Looking ahead, the overall weather pattern that has resulted in cold air outbreaks for the central and eastern US in recent weeks finally looks like it may break down during the third week of May.
Read More
Today is an unusually chilly day in the Mid-Atlantic region with temperatures far below-normal for the 6th of May aided by a low-level easterly flow of air and thick cloud cover. In fact, high temperatures today in much of the Mid-Atlantic region will be confined to levels rarely experienced for this time of year. Believe it or not, this air mass may pale in comparison to what is on the way for the early part of the weekend.
Quite an amazing outbreak of cold air will arrive in the Mid-Atlantic region and Northeast US on Friday night and the cold frontal passage may actually be accompanied by a rain-changing-to-snow event – even into higher elevation suburban locations just to the north and west of I-95. Saturday will turn out to be a very windy and unusually cold day in much of the northeastern quadrant of the nation with temperatures in the DC-to-Philly-to-NYC perhaps more than twenty degrees below normal. While Sunday, Mother’s Day, will remain colder-than-normal, the afternoon will become much more bearable when compared to Saturday as there should be far less in the way of wind and plenty of sunshine. Looking ahead, cold air outbreaks will likely continue into mid-May across the central and eastern US, but a pattern change to warmer looks like it’ll begin during the 3rd week of the month - and tropical season may not be far behind.
Read More
Showers will develop late today as low pressure intensifies off-shore and it’ll be unusually cool as the thick cloud cover will combine with an easterly flow to keep highs confined to the middle 50’s. These kind of highs could very well end up being some of the lowest maximum temperatures ever recorded for the 6th of May. After a breezy and cool day on Thursday, more rain will push into the Mid-Atlantic region on Friday afternoon as an even stronger low pressure system moves in this direction from the Tennessee Valley and there can be rain and/or snow showers on Friday night. This system will intensify significantly by the time it reaches the New England coastline on Saturday morning and it’ll usher in a very cold air mass for this time of year. Not only will it be an unusually cold day for this part of the nation on Saturday, but it’ll be very unstable as well with an extremely strong upper-level low sitting right on top of the region. As a result, NW winds will become very strong and there can even be a couple of rain and/or snow showers in the area. Mother’s Day (Sunday) will get off to a very cold start and it’ll stay on the cool side of normal in the afternoon; however, the PM hours should be a lot more bearable than Saturday with far less wind and plenty of sunshine. Looking ahead, a warmer weather pattern finally appears on the horizon likely beginning during the 3rd week of May and tropical season will not be far behind.
Read More
The temperature reached 74 degrees yesterday at Philly Intl Airport, but a cold frontal passage ushered in considerably cooler air for today with mid-day readings still in the 50’s. It’ll turn even chillier on Wednesday in the Mid-Atlantic region with plenty of clouds around and occasional showers. In fact, some spots may experience some of the lowest maximum temperatures ever recorded for the 6th of May in this unusually cool air mass for this time of year. An even colder air mass is headed this way for the beginning of the Mother’s Day weekend and Saturday could turn out to be quite an amazing weather day in the Mid-Atlantic and Northeast US.
Read More
It turns cooler today despite some sunshine and stays quite cool during the rest of the work week. In fact, maximum temperatures on Wednesday may turn out to be some of the lowest ever recorded here for the 6th of May and there will be some rain shower activity in the region. More rain will push into the area on Friday as a strong cold front arrives and it'll turn even colder for the start of the Mother's Day weekend. Temperatures on Saturday will be far below-normal and there will be a stiff NW wind and a few rain showers are possible. In fact, snow showers cannot be ruled out on Saturday; especially, in higher elevations interior locations to the north and west. It stays cool on Sunday, but it'll be more bearable as winds will be down and sunshine should prevail. Another cold air outbreak is destined to reach the Mid-Atlantic region later next week.
Read More
