Krystal’s Blog: When Will It Start to Feel Like Fall?

Temps feel like summer as the first full week of fall begins in the Philadelphia region. NBC10 First Alert Weather meteorologist Krystal Klei tells us how long the heat will last and if Hurricane Maria could impact the coast.

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We’re staying hot Monday, with near record temperatures in the forecast. As the week progresses, clouds return and the shore will feel some minor impacts from Hurricane Maria. By the weeks’ end, it will feel like fall across the Delaware Valley. Finally — time for the sweaters and pumpkin spice everything!
Let’s begin with the warmth. Over the weekend, we hit the low 90s across the region. In Philadelphia, Sunday was the 25th 90 degree (or above) day on record for 2017. The hot trend continues through Monday.
Temperatures will rise to near-record Monday afternoon. Most locations have records in the low 90s, and upper 80s are in the forecast. Regardless of the official reporting stations (that’s what you’re seeing in this graphic), some spots inland may see temperatures hit the low 90s. The humidity is rising slowly as well. Monday the air will feel a bit thick, and the humid conditions last into Tuesday and Wednesday.
Tuesday and Wednesday, the cloud deck ahead of Hurricane Maria will press over the region. Tuesday, an isolated shower is possible over southern Delaware. Wednesday, an isolated shower is possible near southern Delaware or the Jersey shore. While less likely, an isolated shower could stretch as far as Philadelphia. Any rain will be light and short lived.
Let’s talk about Hurricane Maria. Maria was a Category 1 hurricane as of Monday afternoon. The system was continuing to move north, paralleling the east coast. Take a look at the forecast cone for Maria — it’s possible the storm will brush near the Outer Banks of North Carolina on Wednesday before quickly hooking right early Thursday. This keeps the impacts to our area minimal.
The coastal impacts will be similar to Hurricane Jose’s passage — but to a lesser degree. Gusts will pick up to 25 to 30 mph and some isolated showers are possible (as you saw above). Rough seas, with wave heights approaching 12 feet are possible by Wednesday. Some beach erosion is possible, although less destructive than with the swells from Jose. Finally, the rip current risk has increased to high, and will stay high over the next couple days.
There is good news! A large trough of cooler air and an associated surface cold front will sweep into the area by the week’s end. By Friday, temperatures will feel much more fall-like. Conditions will clear out as well, leaving behind a sunny Friday and fairly nice weekend.
Currently, there’s a chance for some scattered showers by Saturday. They appear to be spotty in nature, and there will be a nice mix of clouds and sun, still. Temperatures will cap in the mid/upper 60s north and west. Philadelphia and portions of Delaware to New Jersey will hit the low 70s. There’s still time for this to change, so stay up-to-date on the app and on-air!
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