8:00 PM: Another Hot, Humid, Stormy Day Tomorrow
Temperatures are currently slowly cooling down across the area after peaking in the low to mid 90s away from the coast earlier today; except for Long Island and coastal CT, the rest of the area saw heat index values peak in the low to mid 100s. The latest radar shows widespread strong to severe thunderstorms over NY state; these storms will mainly remain north and west of the area, although some storms could reach NW NJ and SE NY later tonight. Temperatures will struggle to cool down tonight, only falling to the low to mid 70s.
Another hot and humid day is expected on Thursday, with partly sunny skies and highs in the mid to upper 80s from NYC and further north/west and the low-mid 80s further east. Humid conditions will continue, with heat index values reaching the low to possibly mid 90s away from the coast. A strong cold front will enter the region, triggering widespread strong to possibly severe thunderstorms; the strongest storms will stay north and NW of the area, although the storms are expected to begin affecting interior parts of the area towards the mid-late afternoon, spreading into NYC and further east by the evening hours, with storms possibly strong with heavy rain and strong wind gusts northwest of NYC. Much cooler and less humid conditions will return behind the front, with highs on Friday only in the low to mid 70s, about the same as tonight’s low temperatures. More information will be posted with a full forecast discussion on Thursday morning.
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Tuesday, September 10 Observations:
Monday’s trough quickly exited the region, with an unseasonably warm and humid air mass surging into the region. A warm front moved through early in the day, with a mesoscale convective system (MCS) staying north of the area, followed by clearing skies and increasing humidity as highs peaked in the mid to upper 80s in northern NJ and NYC, low to mid 80s in SE NY, and the mid to upper 70s in Long Island and most of southern CT. The highest temperature was 89 degrees in Teterboro and Newark, NJ, and the coolest high temperature was 74 degrees in Montauk, NY and New London, CT.