Mexico, PA Weather Forecast

Key Messages

1) Periods of rain continue into tonight associated with the remnants of Isaias

2) Big temperature swing forecast for the week ahead

Discussion

... KEY MESSAGE 1: Periods of rain continue into tonight associated with the remnants of Isaias

Steady light to moderate rain (rates generally <0.50 in/hr) will be most persistent along and east of the Allegheny Front this evening into tonight. Increasing MUCAPE and elevated instability could result in some locally heavy, short duration rain/rates across south central PA into tonight. Much of this area has already picked up 1-2" since Saturday evening, so we still can`t rule out some isolated runoff problems. Otherwise, the prolonged dry run leading up to this Isaias rain event has allowed a sufficient cushion for what has largely been a duration type heavy rain episode with some locations ticking over 3 inches in the past 24 hours. Current MA/OH RFC river guidance keeps all fcst points below action stages, thanks to very low flows at the start of the event.

KEY MESSAGE 2: Big temperature swing forecast for the week ahead

Noticeably warmer and more humid conditions expected early this week with max temps on Tuesday forecast to peak 10-15 degrees above the histo...