End of overly humid airmass may finally be in sight

To say that it has been warm and humid of late may very well be an understatement. In fact, the persistence of the warm and humid pattern has been quite remarkable. Dew points have averaged near or over 70 degrees for a good part of the past week throughout the area, and more recently temperatures surging into the upper 80s to low and mid 90s have left the airmass feeling not only hot and humid, but stale and uncomfortable.

Much of that will change by the end of this week, as a trough slowly settles into the Eastern 1/3 of the United States. Over a more prolonged period of time, the pattern has been “wash-rinse-repeat” with a trough giving way to heat and humidity, followed by another trough several days later. Regardless, before we can talk about cooler temperatures and a bit of a more refreshing airmass, we will have to deal with showers and thunderstorms.
Regional analysis this morning suggested an increase in clouds when compared to the past several days, owing to decaying storms from the Ohio valley last night and a continued moist airmass. This will keep the sun away for a while today, but more importantly it will also mitigate instability — which will keep the threat for severe thunderstorms at bay this afternoon. There could still be a few strong storms as a favorably placed jet stream and frontal boundary approach the area. The Storm Prediction Center has placed areas to the west of New Jersey and NYC in a “Slight Risk” for severe storms, but has kept our area in a lower risk for the reasons discussed above.
Unsettled weather will continue into Thursday, but by that point humidity will be on a noticeable decline with the airmass feeling more comfortable. Such a comfortable change will probably more than welcomed by most.