SPSPHI from 7/17/2019 2:05 PM to 2:30 PM EDT for Northampton County, PA: A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN LEHIGH SOUTHEASTERN CARBON AND WEST CENTRAL NORTHAMPTON COUNTIES. More information.
New event. Severe Thunderstorm Watch from 7/17/2019 2:03 PM to 10:00 PM EDT for Hunterdon County, NJ, Northampton County, PA, Warren County, NJ. More information.
New event. Areal Flood Advisory from 7/17/2019 1:50 PM to 5:45 PM EDT for Warren County, NJ. More information.
SPSPHI from 7/17/2019 1:26 PM to 2:00 PM EDT for Warren County, NJ: A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN SUSSEXNORTH CENTRAL WARREN AND NORTHEASTERN MONROE COUNTIES. More information.
Event extended (area). Heat Advisory from 7/17/2019 11:00 AM to 8:00 PM EDT for Northampton County, PA, Warren County, NJ. More information.
So if the Flash Flood Watch along with the above normal heat and humidity wasn’t enough the Storm Prediction Center has increased the risk for our entire area to a slight risk. The greatest threat will be from gusty thunderstorms later today and tonight that will also contain downpours.
We are also in a slight risk for flash flooding from the potential heavy rain that is forecast for later today, tonight and overnight.
Approximately 1″ of rain is forecast across the board for our area. However if you receive a drenching thunderstorm that is slow moving, you will receive much more than that!
354 AM EDT Wed Jul 17 2019
…FLASH FLOOD WATCH IN EFFECT FROM 2 PM EDT THIS AFTERNOON
THROUGH LATE TONIGHT…
The National Weather Service in Mount Holly has issued a
* Flash Flood Watch for portions of northern Delaware, northeast
Maryland, New Jersey, and Pennsylvania, including the
following areas, in northern Delaware, New Castle. In
northeast Maryland, Cecil. In New Jersey, Camden, Gloucester,
Hunterdon, Mercer, Middlesex, Morris, Northwestern Burlington,
Salem, Somerset, Sussex, Warren, and Western Monmouth. In
Pennsylvania, Berks, Delaware, Eastern Chester, Eastern
Montgomery, Lehigh, Lower Bucks, Northampton, Philadelphia,
Upper Bucks, Western Chester, and Western Montgomery.
* From 2 PM EDT this afternoon through late tonight
* A hot and humid airmass will spread over the region today, and
then the remnants of what was Tropical Cyclone Barry will pass
through the region tonight. Showers and thunderstorms this
afternoon and tonight will be capable of producing torrential
rainfall, with local amounts of 2 to 4 inches and even higher
localized amounts potentially occurring in a short period of
time. This could lead to flash flooding.
* The risk of flash flooding is highest in urbanized and low-
lying areas. Rapid rises on small creeks and streams are
possible.
New event. Flash Flood Watch from 7/17/2019 2:00 PM to 7/18/2019 1:00 AM EDT for Hunterdon County, NJ, Northampton County, PA, Warren County, NJ. More information.
New event. Heat Advisory from 7/17/2019 11:00 AM to 8:00 PM EDT for Hunterdon County, NJ. More information.
Hopefully you were able to get outside yesterday and enjoy a top 10 weather day. Low humidity was delightful. I personally was able to get in a 30 mile bicycle ride and it was great.
Heat and humidity are returning to our area and will be here through Sunday at least. Today will see temperatures at 90 or slightly above. The trend should continue everyday with the possible exception of Thursday. Thursday may only be in the 80’s due to cloud cover as the remnants of Barry pass overhead.
There is an excessive heat watch to our south. Look for this to be extended further north if conditions warrant.
Wednesday evening and overnight into Thursday morning look to be the greatest potential for precipitation for western New Jersey. There could be some heavier showers and thundershowers then but nothing too severe looking at this point. The above map show a potential for only marginal severe weather threat for Wednesday. That’s a 1 out of 5.
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