Reported by: Meteorologist Steve Newton
The humid air has settled in across the region. Showers and thunderstorms are moving in from the west ahead of the second of two cold fronts, setting up for the potential for some severe weather this evening. A Tornado Watch is in effect for Western Pennsylvania until 9 p.m., and this includes Jefferson and Indiana Counties. This just means is that conditions are favorable for a tornado to develop later this afternoon and evening, but does not guarantee there will be a tornado. An area of thunderstorms developed over eastern Indiana and Western Ohio earlier today, and will be arriving in Western and Central Pennsylvania this evening. From the thunderstorms we may see damaging winds and large hail, along with drenching downpours. The thunderstorms will be moving out of the region by early Monday morning, and a few showers will linger for the morning commute with temperatures falling into the low and mid 60s. Monday will be breezy as cooler air moves into the region with scattered showers and maybe some rumbles of thunder in the afternoon. Highs Monday will only make it into the low and mid 70s. Tuesday is looking like the coolest day out of this stretch, with a few stray showers developing and high temperatures in the upper 60s and low 70s. The warmer air begins its return to the region midweek, but temperatures will not rebound into the 80s right away. Wednesday will only have highs in the low and mid 70s, and Thursday will have highs in the mid and upper 70s. As we start August on Friday temperatures will get back into the 80s in some locations, but a few showers or thunderstorms could develop. The first weekend of August will have temperatures near or just below seasonal.
7:30 p.m. UPDATE: Severe Thunderstorm Warning issued for northeastern Huntingdon, southeastern Centre, and northern Mifflin Counties until 8:15 p.m. The cell which generated the warning for Blair and Huntingdon Counties earlier is moving northeast at 35 mph and capable of producing 60 mph wind gusts.
7:20 p.m. UPDATE: A Severe Thunderstorm Warning has been issued for Centre County and extreme northern Huntingdon County until 8 p.m. The thunderstorm is moving northeast at 45 mph. This will impact mile markers 56-85 on I-99 and mile markers 139-170 on I-80. This warning is for the same storm which generated the warning for northern Blair, extreme northwestern Huntingdon and southwestern Centre Counties. That warning is due to expire at 7:30.
The Severe Thunderstorm Warning for southeastern Blair and northwestern Huntingdon Counties has been cancelled, but it is still a strong storm moving through Huntingdon County.
6:52 p.m. UPDATE: A Severe Thunderstorm Warning has been issued for Southeastern Blair and Northwestern Huntingdon Counties until 7:30 p.m. This thunderstorm is capable of producing 60 mph wind gusts and is moving northeast at 30 mph.
Also, another Severe Thunderstorm Warning, this one for NE Blair, NW Huntingdon, NE Cambria, and SW Centre Counties until 7:30 p.m. This line of thunderstorms is capable of 60 mph wind gusts and quarter sized hail, and is moving northeast at 40 mph. This impacts I-99 between mile markers 28 and 56.
A Severe Thunderstorm Watch has been issued for all of Central Pennsylvania until 2 a.m.
6:00 p.m. UPDATE: The Severe Thunderstorm Warning for Blair and Huntingdon Counties (and that brief Tornado Warning) have been allowed to expire. We may see another Tornado Watch issued for Central PA in the next hour or so.
5:15 p.m. UPDATE: A Severe Thunderstorm Warning has been issued for East Central Blair and Northwestern Huntingdon Counties until 6 p.m. The thunderstorm near Williamsburg is capable of producing 60 mph wind gusts and quarter size hail, and is moving northeast at 15 mph.
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