Pinpoint Weather: Hot and humid pattern continues, rain arrives later this week

Weather Blog

The high-pressure dome that has been dominating the region and keeping the heat on is starting to break down, but very slowly. The heat and humidity will continue to maintain a grip on the Commonwealth until widespread rain arrives late on Thursday.  The rain will become fairly widespread overnight and heavy at times on Friday. Localized flooding is possible with the rain Friday.

Tonight will be another muggy and mild one with temps dropping into the upper 60s to low 70s.  The dew points, calculating the temperature at which a parcel of air becomes saturated, will be in the upper 60s to low 70s too, so plenty of moisture around for some pockets of fog. 

Wednesday will still see very hot temperatures, possibly the hottest of the year so far.  Highs will top out in the mid to upper 80s in the mountains and 90s are expected east of the foothills.  The humidity levels will allow the “Feels Like” temperatures to be in the upper 90s so make sure you stay hydrated.  There may be some rain showers and thunderstorms fire up over the high country once again in the heat of the afternoon so keep an eye out if you are out hiking or recreating on a lake or river. Storms of that nature, the pop ups, form quickly as the name would suggest and drop a good deal of rain in a short period of time.

Thursday will begin with muggy conditions and pockets of fog but there is a cold front working in from the west and north that may corral a good deal of moisture and deposit it over the Commonwealth.  The timing of the rain looks to be late in the day over the mountains the spread toward Piedmont overnight. Some of the rain may be remnant rain from Danny, but not too likely, which would mean a good deal of rain.

 In any case, there is going to be ample moisture to tap into and from Thursday evening into Friday night we can expect a good deal of rain. Localized flooding is expected as the persistent nature of the rain should overtake many small streams and creeks, as well as urban areas and low-lying regions.

Lingering rain is possible on Saturday while the Fourth of July looks to be on the dry side. After the front and the rain the heat wave will be effectively busted and temps over the weekend will be in the upper 70s and low 80s.

Today in history:  the 29th of June, marks the 9th anniversary of the Derecho that devastated the region.  Strong, straight line winds pushed through the Commonwealth starting at around 8pm on June 29th 2012. Thousands lost power for days amid one of the hottest periods in our region’s history.  Folks had to deal with triple digit heat for several days and many did not have power.  Unofficially there were eight deaths after the storm due to the heat.  Five deaths and 16 injuries are attributed to the line of storms.

Stay Safe today and Hydrated.

John Carroll
Chief Meteorologist

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