WEEKEND FORECAST UPDATE

Sun 08:35 PM Forecast Review — The thunderstorms came through close to schedule about 6:45 PM .  This afternoon’s models only showed CAPE values of 580 joules/kg, not the 1300 predicted by yesterday’s HRRR.  So storms were typical, not severe.

from yesterday …

The forecast is on track with rain on Sunday, starting between 6 AM and 8 AM.     

Most models have the rain becoming more episodic in the afternoon, with lines of showers moving through  with breaks in the rain . Heaviest rain is now expected west of the Philadelphia area. QPF about 0.6 inches  for Blue Bell.  It will become WINDY.   High near 68º

A final line of showers and thunderstorms appears to be timed between 5-7 PM in the immediate PHL area with the cold front passage. Available thermodynamic energy  (“CAPE”) values may exceed 1300 joules/kg which could cause some strong storms from Philadephia and eastward.

Temperatures  will drop Sunday night.