A warm and more humid air mass is gradually making a return to the region, with temperatures returning into the low to mid 80s today and the mid 80s to low 90s for Tuesday through Thursday. A cold front is expected to move through on Thursday night, with seasonable conditions returning for Friday and Saturday and another brief warmth surge possible the following week as the region remains near the eastern end of strong ridging.
Sunday, August 18 Observations:
The high pressure previously in place moved offshore as a frontal boundary and a weak wave of low pressure slowly advanced to the northeast. This wave of low pressure spread light rain showers across Pennsylvania, New Jersey and southern New England; although the shower extent was north of the forecast, the storm only produced very light rainfall rates for most especially with dry air still present aloft, with less than 0.05 inch across most of the area. The clouds and scattered showers interrupted the gradual warming trend that began on 8/14, with highs in the mid to upper 70s across the area. The highest temperature was 78 degrees in JFK airport and the lowest high temperature was 73 degrees in Sussex, NJ and Port Jervis, NY.