A cold front passed through the region in the overnight hours and today will feature the return of high pressure with some sunshine and moderately cool conditions. A warm front will push through the area late tomorrow and then a cold front will follow by mid-day Friday. As a result, showers are likely to return to the area from later tomorrow night into Friday and then it'll turn colder for the upcoming weekend. A weak low pressure system could bring a touch of rain and/or snow to the area on Saturday night or early Sunday and then another warm up will take place next Tuesday and Wednesday.
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The week started off with very nice weather conditions on Monday as there was plenty of sunshine and temperatures at or above the 70 degree mark for afternoon highs. Today will remain mild; however, there will be occasional showers and maybe a thunderstorm as well as a cold front pushes towards the east coast. The air behind the front will not be all that chilly at mid-week and high pressure will resume control. A stronger cold front will arrive on Friday night with more showers possible as we close out the week and it is going to turn colder this weekend.
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The week will start off with very nice weather conditions as high pressure remains in control across much of the eastern US. Plenty of sunshine today will boost afternoon temperatures well up into the 60’s throughout the metro region. A cold front will approach the area on Tuesday and it could spawn some shower activity in the Mid-Atlantic region, maybe even a thunderstorm or two. High pressure will resume control on Wednesday and the air behind the cold front will not be all that chilly so temperatures at mid-week should be able to climb well up into the 50’s. A stronger cold front arrives at the end of the week.
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Explosive intensification is about to take place with an ocean storm now over the western Atlantic. A strong “clipper” system is moving into the Mid-Atlantic region and it is interacting with the upper-level energy that remains from the ocean storm which soaked the southern US earlier in the week. This interaction will result in a drop of central pressure of the ocean storm from around 992 millibars (29.29 inches) at the current time to around 965 millibars (28.50 inches) by the middle of tonight. While this ocean storm is situated well off the east coast, it is still going to influence the Mid-Atlantic region late today and tonight as an inverted trough (aka “norlun” trough) is forming from the center of the low pressure system northwestward to the Mid-Atlantic. As a result, there are rain showers this afternoon throughout the Mid-Atlantic region and even a few embedded thunderstorms. However, as colder air aloft becomes wrapped up into the overall system, a mixing with and changeover to snow is possible later today or early tonight in many spots and there can even be some grassy accumulations; especially, in higher elevation suburban locations.
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A strong “clipper” system will drop southeastward into the Mid-Atlantic region today and it’ll feature some rather cold air in the upper part of the atmosphere. At the same time, the southern storm that soaked the southern states in recent days will intensify after it moves out over the open waters of the western Atlantic. In fact, this storm could intensify to a point where it is produces hurricane-force winds by tonight in the western Atlantic. While this ocean storm will be situated well off the east coast, it’ll still have an influence in the Mid-Atlantic region as an inverted trough (aka “norlun” trough) will extend from the low pressure center all the way back to the Mid-Atlantic. The combination of the “clipper” system and the inverted trough associated with the ocean storm is going to lead to rain and/or snow showers in the Philly metro region later today and tonight. In some “norlun” trough scenarios, small-scale heavier bands of precipitation can form and we’ll have to closely monitor that possibility later today and tonight; especially, across eastern PA, NJ and the Delmarva Peninsula. Following today’s mess, the weekend will start off on the chilly and dry side, but a major warm up will take place early next week. In fact, the weather on Monday should feature sunshine and warmth with temperatures well up in the 60’s for afternoon highs.
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A strong “clipper” system will drop southeastward into the Mid-Atlantic region on Friday and it’ll feature some rather cold air in the upper part of the atmosphere. At the same time, the southern storm that continues today to produce significant rainfall in the SE US will intensify after it moves out over the open waters of the western Atlantic. In fact, this storm could intensify to a point where it is produces hurricane-force winds by tomorrow night in the western Atlantic. While this ocean storm will be situated well off the east coast, it’ll still have an influence in the Mid-Atlantic region as an inverted trough (aka “norlun” trough) will extend from the low pressure center all the way back to the Mid-Atlantic. The combination of the “clipper” system in the northern stream and the inverted trough associated with the ocean storm is likely to lead to rain and/or snow showers in the Mid-Atlantic later tomorrow and tomorrow night. In some “norlun” trough cases, small-scale heavier precipitation bands can develop and we’ll have to closely monitor that possibility late tomorrow and tomorrow night.
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A strong “clipper” system will drop southeastward on Friday across the Great Lakes and into the northeastern part of the nation and it’ll create lots of instability in the atmosphere around here. At the same time, the southern storm that continues to produce significant rainfall in the southern states will intensify as it moves off the east coast and out over the western Atlantic. While this storm will be well off the east coast by late Friday, there can be an inverted trough (aka “norlun” trough) extending from the low pressure center all the way back to the Mid-Atlantic region which will also contribute to some instability in the atmosphere. The combination of the “clipper” system and the inverted trough is likely to lead initially to rain on Friday and then some rain and/or snow is likely on Friday night with small grassy accumulations possible; especially, in higher elevations locations of the northern and western suburbs. The weekend will start off on the chilly and dry side, but a big time warm up will take place early next week. In fact, Monday will turn out to be a "spring fever" alert type of day with sunshine and afternoon highs in the 60's.
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A strong “clipper” system will drop southeastward across the Great Lakes on Friday and it’ll feature some quite cold air in the upper part of the atmosphere. At the same time, the southern storm that continues today to produce significant rainfall from Texas to the Carolinas will intensify after it moves into the western Atlantic. While this storm will be situated well off the east coast by later Friday, there can be an inverted trough of low pressure (aka “norlun” trough) extending from the low pressure center all the way back to the Mid-Atlantic region which can also contribute to some instability in the atmosphere. The combination of the “clipper” system and the inverted trough is likely to lead to rain and/or snow showers on Friday and Friday night and we’ll have to closely monitor the situation to see if any heavier bands of precipitation develop; especially, across places like eastern PA and NJ.
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A cold front passed through the region last night with brief downpours and some embedded thunder, but the air behind it will not be all that chilly for today. However, the winds will pick up noticeably today from a northwesterly direction with gusts possible to 30 mph or so. High pressure from our west will take control of the weather for later today, tonight and Thursday and then it will push offshore tomorrow night. A strong "clipper" low pressure system will then drop southeastward across the Great Lakes region resulting in some rain shower activity around here on Friday and rain and/or snow showers on Friday night. The weekend starts off on the chilly side, but a big warm up takes place early next week.
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An area of showers and embedded thunderstorms has developed across eastern Ohio and West Virginia associated with a cold frontal system and they’ll advance to the east over the next few hours. By later this evening, brief downpours will be possible in the I-95 corridor region and there can be an embedded strong thunderstorm or two as well. High pressure will take over for much of Wednesday and Thursday, but then a strong “clipper” system will create instability in the Mid-Atlantic/NE US on Friday and Friday night with the threat of rain and/or snow showers.
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