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NWS State College:

.SHORT TERM /SATURDAY THROUGH SATURDAY NIGHT/...
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GEFS and NBM indicates an increasing/anomalously strong south/SSW llvl return flow developing for later tonight through Saturday with the anomaly of the LLVL v-component reaching around plus 3 sigma across northern PA and a solid 2+ sigma elsewhere across Central and Southern PA Saturday afternoon and evening. Latest model data suggests 30-40kt LLJ from the south- southwest will drive some showers and elevated t-storms over west central PA later tonight into early Saturday morning. This strong vertical speed and directional shear coupled with increasing meso-B lift associated with the Right Entrance region of a 100+ KT jet to our north will support the likelihood of another fairly widespread strong to severe convective events with a distinct threat for isolated tornadoes with discrete cells, BKN-S signatures that are accompanied by a near perpendicular deep layer shear component to their long axis. SPC not only expanded the SLGT risk across all but our far SE CWA, but also introduced a 5% TOR threat across roughly the NW 40 percent of PA. The belt of strong 850mb flow will transport rich low level moisture (dewpoints in the upper 60s to lower 70s) northeastward along/ahead of a cold front this weekend. PWAT values are forecast to reach 2-2.5 inches on Saturday or +2-3SD. The anomalous, deep-layer moisture will support risk of heavy to potentially excessive rainfall with point amounts of 3 inches possible in places experiencing multiple TSRA. WPC has maintained a broad MRGL risk, but the setup will likely yield an upgrade to SLGT risk particularly where FFGs are reduced. Although mid lvl lapse rates may remain weak, high dewpoints and diurnal heating should fuel at least moderate buoyancy by mid/late afternoon. The influence of early day clouds/waning overnight convection could be a key/limiting factor. The mid level cap is similar in strength to our past SVR event this past Wednesday with 700 mb temps in the 8-9.5C range and weak broad scale forcing until the afternoon/evening arrival of the better omega field beneath the favorable RR Quad of the aforementioned ULVL jet. Convection should decrease in coverage and intensity into Saturday night, which will be warm and muggy with lows 65-75.

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Most spots dropped well down into the 50's last night with the chilliest temp the 50.9 degree low at Warwick Township. A great day on the way with low humidity as highs possibly not escaping the 70's in the higher spots in Chester County. Rain chances ramp up by tomorrow night and into Sunday before sunny and cooler again to start the new work week on Monday.
Chester County records for today: High 101 degrees at West Chester (1963) / Low 47 degrees at Morgantown/Elverson (1970) / Rain 3.33" Glenmoore COOP (2006)
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13 hours ago, canderson said:

Phillies lose the game but more importantly night have lost Harper and Shwarber for extended time. That Harper reaction seems bad. Ugh 

No doubt about it. This could easily put the Braves back in contention for the Division. Ugly night in Philly. Ugly lost to a 20 winner team after being up 3-0 in the 7th and the potential of losing 2 of there key players. 

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18 minutes ago, paweather said:

No doubt about it. This could easily put the Braves back in contention for the Division. Ugly night in Philly. Ugly lost to a 20 winner team after being up 3-0 in the 7th and the potential of losing 2 of there key players. 

Yep, Braves have been playing much better lately. Harper post-game last night seemed really concerned about his injury. Schwarber not so much. Phillies lineup facing lefties isn't nearly as potent as when they face right handers...they're not getting much at all from Pache and Merrifield.

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Clouds on the increase today and a good bit warmer than yesterday with temps reaching the low to mid 80's. Rain chances increase late tonight through tomorrow. Best chances for heavier rain would be tomorrow night with a cold frontal passage. Much cooler again for Monday with temps slowly warming as we head toward July 4th.
Chester County records for today: High 103 degrees at Phoenixville (1934) / Low 45 degrees at Coatesville (1988) / Rain 3.88" at West Chester (1973)
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