Rain chances will be best before 1 p.m. Sunday, then chances decrease through the late afternoon.
Flash flood watches this morning stretch from Arkansas to Maryland.
Flooding of low-lying areas and poor drainage areas can be expected, according to the NWS.
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We start to clear out Tuesday and Wednesday with highs in the mid 70s. If driving during heavy rains, watch out for rising water levels and do not drive into water, even if it appears shallow. The additional lift created by the low pressure will aid in more widespread rain and increase the rainfall rates.
Many areas could see two to four inches of rain - with local amounts of five inches or more - from Saturday night and into Monday morning, according to the NWS. It may prevent that tropical moisture from heading too far north and could potentially limit rainfall totals further north and over the Niagara Frontier.
The total rainfall forecast for the next couple days is 4 to 6 inches in the western part of Centre County and 3 to 4 inches in the eastern part. Expect it to feel like the 50s and 60s Sunday afternoon and still a cool below average day on Monday.