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UPDATE: A tornado watch has been issued for most of Pennsylvania, including the Lehigh Valley, through Tuesday night.
The watch is in effect until 11 p.m. for Lehigh, Northampton, Berks, Carbon and Monroe counties, according to the National Weather Service.
Check back for the latest updates.
The National Weather Service has posted a hazardous weather outlook warning of the likelihood of severe weather later today in the Lehigh Valley.
Meteorologists say an approaching cold front will trigger thunderstorms this afternoon into this evening which will impact the region. Some of these could be severe, with damaging winds.
The probability for widespread hazardous weather is low, with the best chance for storms across the southern Poconos and most of southeast PA, as well as northern NJ, generally north and west of the I-95 corridor from Newark to Philadelphia.
A ‘Bermuda High’ remains anchored off the coast, the weather service says, and southwest flow behind the high will continue to usher a sub-tropical airmass will into the area today. It’s expected to be quite warm and humid, with highs in the upper 70s to low 80s.
The wet weather is expected to hold off until the late afternoon and nighttime hours. The forecast discussion from Mount Holly says damaging winds and heavy rain resulting in poor drainage flooding will be possible starting around 4 p.m.
Unfortunately, the phrase ‘cold front’ will almost be an oxymoron as it relates to the actual temperatures. The weather service says the front will wash out after midnight, and meteorologists are not expecting much of a change in airmass for most of the region.
Dew points are expected to fall to around 60 in the southern Poconos and northern NJ, and from the upper 60s to the mid 60s elsewhere.
In October, it will continue to feel like summer
Despite average high temperatures in the upper 60s in Allentown, temperatures will soar to near or above 80 degrees each afternoon through Thursday.
Much like today, a cold front is anticipated late in the day Thursday that could touch off some scattered afternoon and evening showers and thunderstorms. The weather service says the best chances for this will be north and west of the I-95 corridor.
Mostly dry and seasonable weather is anticipated for Friday and Saturday, but on Sunday it’s likely temperatures will begin to build again in our area.
Here is the extended Lehigh Valley forecast from the National Weather Service:
Today
A slight chance of showers before noon, then a chance of showers and thunderstorms between noon and 2pm, then showers likely and possibly a thunderstorm after 2pm. Some storms could be severe, with damaging winds and heavy rain. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 79. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers likely and possibly a thunderstorm before 9pm, then a chance of showers and thunderstorms between 9pm and 2am, then a slight chance of showers after 2am. Some storms could be severe, with damaging winds and heavy rain. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 62. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 77. Calm wind becoming northwest 5 to 8 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 58. Calm wind.
Thursday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 82. Calm wind becoming southwest 5 to 8 mph in the afternoon. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 71.
Friday Night
Mostly cloudy, with a low around 55.
Saturday
Mostly cloudy, with a high near 67.
Saturday Night
Mostly cloudy, with a low around 59.
Sunday
Partly sunny, with a high near 75.
Sunday Night
Partly cloudy, with a low around 60.
Columbus Day
Mostly sunny, with a high near 76.
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