WEATHER BLOG: Preakness Day

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Tim Williams 370x278

The base of the trough which is currently in the Ohio Valley is into western Pennsylvania today. This will allow for unseasonably cool conditions along with spotty showers that increase in coverage as the day progresses due to the cold air aloft. The showers will remain west of the I-95 corridor, mainly in the mountains. Temperatures will climb up into the upper 60s to low 70s today which is below normal for this time of the year. With a mainly cloudy sky with some sun it will feel cooler than the actual temperature. The western suburbs will remain in the upper 60s today. Tonight the instability showers will decrease this evening in the mountains as the sun sets and the clouds will break for a mainly clear night. With the base of the trough over the region the coldest air aloft and 850mb temperatures below freezing, western suburbs will drop into the lower 40s while the I-95 corridor will stay in the upper 40s. The base of the trough will continue to swing through the northeast on Sunday which will once again allow for instability showers to form from mid-day into the evening hours. This time showers could form along the I-95 corridor as the base of the trough is further northeast tomorrow than today. Temperatures tomorrow will be similar to today with highs in the upper 60s and low 70s.

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