We continue to track an area of low pressure off the New England coast this morning that has delivered the first
accumulating snow of the season for many north of the region! In Baltimore itself, Thursday we managed to climb to 46
degrees under cloudy skies. Rain began around 6 p.m. and lasted through the evening before it pushed north and east of
the area. BWI ended with 0.04 inches of rain.

It will be a blustery but nice day Friday and there will definitely be a chill in the air as highs only get into the mid 40s.

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The remainder of the week into the start of the weekend looks unseasonably cool, with highs mainly in the mid 40s,
about 10-15 degrees below normal. High pressure will be firmly in control, so there will be plenty of sunshine through

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By Sunday, an upper level disturbance will eject out of the southern Plains into the Ohio Valley. Sunday will looks like a
nice day with warmer temperatures, reaching the upper 40s in the afternoon. Clouds will increase Sunday night as the
previously mentioned disturbance moves eastward.

Per latest data, low pressure will develop in the southern Ohio Valley and move northeastward Sunday night into Monday. Guidance is in good agreement with respect to timing and in some agreement with respect to the track of the low pressure system. We think warm air will surge ahead of this system, allowing precipitation to be in the form of all rain. Consensus in guidance takes the system over southeastern New England Monday into Tuesday. As of now, we think a modest rainfall event is possible Monday into Monday night.

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Behind this system, cold air will rush in behind it as an upper level trough quickly moves into the region. Temperatures
Tuesday and Wednesday will struggle to get out of the 30’s as 850mb temperatures will be around -10C. Despite the cold temperatures, high pressure anchored over the eastern US will reduce precipitation chances through late week.