LOCAL WEATHER CONDITIONS AT Franklin, Venango Regional Airport Temperature 32 F / 0 C Wind Chill 26 F / -2 C Dew Point 24.8 F / -4 C Humidity 75% Wind Speed 5.8 Wind Direction SSW 200 Degrees Visibility 10 Miles Sky Conditions few at 8500 feet Current Weather Barometer .00 Inches Issued At 11/18/2025 09:56 $$ |
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A Winter Weather Advisory has been issued for Venango county until 7:00 PM Friday.
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Area Forecast Discussion
Convective Outlooks: Daily Hydrometeorological Data Summary Quantitive Precipitation Forecast Discussion Local Storm Reports (All NWS Pittsburgh areas) Mesoscale Discussions - All States Child Amber Alerts - All States
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ACUS01 KWNS 280501 SWODY1 SPC AC 280500 Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1100 PM CST Thu Nov 27 2025 Valid 281200Z - 291200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Weak thunderstorm activity may begin to develop across parts of western Texas by this afternoon, before increasing within an expanding area of precipitation across parts of the central and southern Great Plains toward lower Missouri and Mississippi Valleys tonight. ...Discussion... Downstream of amplifying flow, including building mid/upper ridging across the mid-latitude eastern Pacific, it appears that at least a couple of short wave perturbations may consolidate into larger-scale digging troughing across and east of the Canadian and northern U.S. Rockies later today through tonight. There is notable spread still evident within/among the model output concerning this evolution, but models generally indicate that this will be accompanied by modest surface cyclogenesis across parts of eastern Colorado into the adjacent central Great Plains by 12Z Saturday. This is close on the heels of a cool/dry intrusion still ongoing across the central into southwestern Gulf Basin, in the wake of amplified mid/upper troughing approaching the Atlantic Seaboard. However, the most significant short wave perturbation still digging within this regime is forecast to rapidly accelerate into the northwestern Atlantic today through tonight, and trailing surface ridging likely will begin shifting east of the southern Great Plains/lower Mississippi Valley. Models suggest that this will occur in a manner allowing for a strengthening southerly return flow from the Texas South Plains/lower Rio Grande Valley toward the lower Missouri Valley by late tonight. This may be accompanied by rapid north-northeastward advection of moisture now present across/east of the Mexican Plateau, and include near-surface dew points increasing through the mid 50s to lower 60s F across Deep South Texas into portions of western North Texas by the end of the period. However, to the north of Deep South Texas, where relatively warm mid-level temperatures probably will inhibit thunderstorm development, the moisture return is generally forecast above a residual cool/stable near-surface layer, which will remain deeper with northward/eastward extent into the central Great Plains and lower/middle Mississippi Valley. Still, forecast soundings indicate that this moistening, near the base of a layer of steepening lapse rates aided by lower/mid-tropospheric warm advection, will provide support for convective development capable of producing lightning. It appears that this could initiate across the Permian Basin vicinity by this afternoon, if not perhaps earlier, before forcing for ascent supports increasingly widespread convection and embedded weak thunderstorm activity across parts of the southern into central Great Plains and lower Missouri Valley tonight. ..Kerr/Weinman.. 11/28/2025 $$ |