textproduct: State College
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
WHAT HAS CHANGED
* No significant changes from the previous forecast.
KEY MESSAGES
1) Isolated to scattered diurnal showers are possible, mainly across the Northeastern 1/4 of the CWA today/tonight as a deepening surface/upper level low moves slowly over the Southern New England Coast. Otherwise, drying trend to wrap up the week.
DISCUSSION
KEY MESSAGE 1: Isolated to scattered diurnal showers are expected will occur across the Northeastern 1/4 of the CWA today/tonight as a deepening surface/upper level low moves slowly over the Southern New England Coast. Otherwise, drying trend to wrap up the week.
Northwest flow/wraparound moisture rotating around the western side of a deepening trough and slow moving sfc/upper low will continue to promote the development of stratocu across the Northern Mountains and Laurel Highlands.
In clear areas early today across the Central and Southern Valleys, patchy fog 1/2SM will occur in the valleys until around sunrise - where the wind will be light However, vsbys in most places will average over 7 SM, thanks to a developing 5-10KT NW breeze and slowly decreasing sfc dewpoints.
High temps today will vary from the upper 60s across the Northern Mtns to the low 80s in the Southeast.
AVIATION /08Z WEDNESDAY THROUGH SUNDAY/
Stratocu has developed across the northern mountains and Laurel Highlands, with MVFR to IFR cigs at JST and BFD, and MVFR cigs at IPT and likely soon at UNV. These clouds along with NW winds of 5-10 kts will likely prevent much fog from developing over the western half of the central Pennsylvania airspace. However, patchy fog has developed across the east, including at LNS. Any fog will dissipate by 13z.
A SCT to BKN cu/stratocu layer will likely develop today beneath the upper low. Isolated showers are possible in the northeast. NW wind gusts will approach 20-25KTS during the afternoon.
Outlook...
Thu...Improving conditions with lingering -SHRA. Patchy AM fog.
Fri...Mainly VFR.
Sat and Sun...Patchy AM fog. Restrictions possible in isolated showers/storms mainly in the south.
CLIMATE
Daily maximum rainfall records were set at Johnstown and Bradford on Tuesday, Jul 28.
JST: 1.63 inches of rain broke the record of 1.41 inches set in 1923.
BFD: 3.89 inches of rain broke the record of 2.50 inches set in 1981.
CTP WATCHES/WARNINGS/ADVISORIES
None.
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