Synopsis:
High pressure moving in from the west will keep the state dry through Tuesday afternoon. The nor'easter wannabe affecting the southeast will head due east during the next 24 hours. About two cold fronts will affect PA this week: one for Tuesday into Wednesday and another for Thursday night into Friday. Temperatures will be near average today through Tuesday and then increase from day to day through Friday before cooling takes place behind the cold front Friday night.
Models used: 12Z NAM & GFS; MOS most of the time
Short-term:
We were at some point watching the low move along the Gulf Coast, wondering how far north the precipitation will get. PA will be dry.
We'll have high pressure in control early this week. Temperatures near 40 for the high and in the mid 20s for lows (into the 30s for Tuesday night). The models showed the clouds rapidly building in for the west from sunrise to around noon on Tuesday. Precipitation is confined to Northern and Western PA and relative humidity (and the chance of rain) drops once you get past the mountains.
Long-range:
Another front will affect PA Wed. and Thursday. I am confident that clouds and precipitation should behave similarly to the clipper system on T! ues. night and Wednesday. The temperatures will be in the mid 40s to low 50s for highs (possibly 60 near Philadelphia on Thursday and Friday); and in the 30s and 40s for lows. I am not sure how far north and west of the Southeast and Capital regions that highs above 50 will get. Adjustments may be needed for the second half of the week once those weak systems move in.
For now, enjoy the nice weather for the next 36-48 hours.
-Jaron Breen
High pressure moving in from the west will keep the state dry through Tuesday afternoon. The nor'easter wannabe affecting the southeast will head due east during the next 24 hours. About two cold fronts will affect PA this week: one for Tuesday into Wednesday and another for Thursday night into Friday. Temperatures will be near average today through Tuesday and then increase from day to day through Friday before cooling takes place behind the cold front Friday night.
Models used: 12Z NAM & GFS; MOS most of the time
Short-term:
We were at some point watching the low move along the Gulf Coast, wondering how far north the precipitation will get. PA will be dry.
We'll have high pressure in control early this week. Temperatures near 40 for the high and in the mid 20s for lows (into the 30s for Tuesday night). The models showed the clouds rapidly building in for the west from sunrise to around noon on Tuesday. Precipitation is confined to Northern and Western PA and relative humidity (and the chance of rain) drops once you get past the mountains.
Long-range:
Another front will affect PA Wed. and Thursday. I am confident that clouds and precipitation should behave similarly to the clipper system on T! ues. night and Wednesday. The temperatures will be in the mid 40s to low 50s for highs (possibly 60 near Philadelphia on Thursday and Friday); and in the 30s and 40s for lows. I am not sure how far north and west of the Southeast and Capital regions that highs above 50 will get. Adjustments may be needed for the second half of the week once those weak systems move in.
For now, enjoy the nice weather for the next 36-48 hours.
-Jaron Breen
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