High pressure stays in control of the weather through tomorrow before the weather turns quite unsettled in the Mid-Atlantic region. Low pressure will impact the region on Friday night with some rainfall around here primarily in the after midnight hours. Another and even stronger low pressure system arrives on Sunday along with milder conditions and this will bring more rain here to close out the weekend…some of which can be heavy at times.
One final note, watch out for icy spots (i.e., black ice) early today due to the combination of temperatures near the freezing mark and low-level moist conditions.
Read More
Low pressure passes by to our north this morning and it’ll bring us a bit of freezing rain that can be mixed with sleet and snow for a brief time at the onset. Given the cold ground conditions, even a light precipitation event can result in slippery conditions on the roadways through the mid-morning hours. High pressure returns later today bringing some sunshine to the area and Christmas Day should feature some sunshine as well with moderately cold conditions.
Read More
The lowest temperatures so far this season greeted the new week in the Mid-Atlantic region with single digits in many suburban areas along I-95 and as low as ten below in the Poconos of northeastern PA. In fact, this morning’s temperature readings were the lowest in many spots of the Mid-Atlantic since about Christmas time two years ago when a brief, but severe cold snap hit the area. An Arctic high will weaken and shift offshore tonight and then low pressure to our north will bring a period of snow and ice on Tuesday morning. While this won’t be a heavy precipitation event on Tuesday morning, a burst of snow and ice can certainly cause problems on roadways which are quite cold given the recent chill.
Looking ahead, there are plenty of signs for a cold pattern to emerge in January with a deepening trough of low pressure likely to form over the eastern states. This upcoming cold pattern is likely to have some staying power as well given the development of strong high-latitude blocking across Canada. Numerous teleconnection indices support the notion of a cold pattern in January for much of the central and eastern US. In addition, given the potential positioning of the trough in the central and eastern US, the southern branch of the jet stream may very well become quite active which enhances the chance for snowstorms in an overall cold pattern.
Read More
A very cold start to the new week with Arctic high pressure still in control across the Mid-Atlantic region. This high departs early tonight and a weak low pressure system to our northwest can produce a band of ice and/or snow here early Tuesday morning with a coating of snow possible and a glaze of ice…watch for slippery spots as road conditions are quite cold. Some sunshine will return for Tuesday afternoon and also Wednesday, Christmas Day, and it stays moderately cold for this time of year.
Read More
A “clipper” low pressure system dropping southeast from the Great Lakes will combine with an intensifying oceanic low to produce a mix of snow and rain in the region from later this morning into late tonight and a coating is possible in many areas by early tomorrow. As the oceanic low intensifies on Saturday and pulls off to the northeast of here, the coldest air mass of the season so far will pour into the region this weekend. Temperatures on Sunday will be confined to the mid-to-upper 20’s for afternoon highs – the coldest day so far this season - and the overnight lows by early Monday morning could be in the lower teens across some suburban locations.
One final note, for those planning to attend the college football playoff game at Penn State on Saturday (noon start)…bring blankets…high temperatures in the middle 20’s, windy with much lower wind chill values, and maybe a snow shower or two.
Read More
The combination of a weakening “clipper” low pressure system and an intensifying ocean low that is to develop an inverted trough will raise the chance of some accumulating snow from later tomorrow into early Saturday across parts of the Mid-Atlantic region. There can be a coating to as much as 2 or 3 inches of snow by early Saturday across portion of eastern PA, much of New Jersey, and the New York City metro region and a coating of snow is possible as far south as the DC metro region. As the intensifying ocean low exits off to the northeast on Saturday, the door will be open for the coldest air mass of the season to ride into the Mid-Atlantic region on stiffening NW winds. A look ahead to early January suggests there will be the return of “high-latitude blocking” across Canada which tends to favor colder weather in the central and eastern US and teleconnection indices support the notion of an overall colder weather pattern.
Read More
On Friday, a “clipper” low pressure system will drop to the south and east from the Great Lakes region at the same time low pressure starts to form over the western Atlantic Ocean. These two systems may combine to produce rain showers in the region early Friday and then rain and/or snow showers from later Friday into late Friday night. Minor snow accumulations are possible in the DC metro region by late Friday night and up to a couple inches can fall across portions of northeastern Maryland.
As the low pressure system intensifies on Saturday and pulls off to the northeast of here, the coldest air of the season so far will pour into the region for the latter part of the weekend and early part of next week. Temperatures on Sunday will be confined to the 20’s for afternoon highs – the coldest day so far this season - and the overnight lows by early Monday morning could be in the lower teens across many suburban locations.
Read More
The combination of a weakening “clipper” low pressure system and an intensifying ocean low that develops an inverted trough will raise the chance of some accumulating snow from later Friday into early Saturday across the northern Mid-Atlantic region to include eastern PA, New Jersey and New York City. Farther to the south, snow showers are possible in the DC metro region by Friday night, but accumulating snow there is less likely than to the north of the PA/MD border. As the intensifying ocean low pulls away to the northeast on Saturday, the coldest air mass of the season so far will ride into the Mid-Atlantic region on stiff northwest winds and the lowest temperatures in this cold snap are likely to occur early Monday morning.
Read More
Another low pressure system and its associated cold front will bring more rain to the DC metro region from the early-to-mid afternoon to later tonight and a slightly colder air mass will follow for the day on Thursday. On Friday, a “clipper” low pressure system will drop to the south and east from the Great Lakes region at the same time low pressure starts to form over the western Atlantic Ocean. These two systems may “link up” in time to produce rain and/or snow showers on Friday and likely snow showers on Friday night.
As the low pressure system intensifies on Saturday and pulls off to the north and east of here, the coldest air of the season so far will pour into the Mid-Atlantic region for the latter part of the weekend and early part of next week. Temperatures on Sunday will likely be confined to 30 degrees for afternoon highs and the lowest temperatures so far this season should take place late Sunday night/early Monday morning with the lower teens a possibility for overnight lows in some suburban locations.
Read More
There have been many football games played in cold weather over the years at Penn State’s Beaver Stadium, but this one coming up on Saturday will be the first of its kind as an official playoff game under the new format by the NCAA. In fact, the coldest air of the season will pour into the Mid-Atlantic region and Northeast US from this weekend into early next week on the backside of strengthening low pressure over the western Atlantic Ocean. The lowest temperatures in this upcoming cold blast are likely to occur early Monday morning with upper single digits on the table for places like State College, PA, and the lower teens possible in many suburban locations along the DC-to-Philly-to-NYC corridor...pretty impressive readings indeed considering there is no snow cover in the I-95 corridor. Temperatures will turn much milder early next week across the central US and a moderation in temperatures will reach the eastern seaboard by Christmas Day which falls on Wednesday of next week.
As far as snow is concerned, there is the chance for snow shower activity on Friday and Friday night in the Mid-Atlantic region and perhaps even a period of steadier snow. The combination of a “clipper” low pressure system dropping to the south and east from the Great Lakes and developing low pressure over the western Atlantic will bring us the threat of snow. The speed at which these two systems “link up” will dictate how much snow can fall on Friday and Friday…small accumulations are on the table and the situation bears watching during the next few days.
Read More
