Area Forecast Discussion
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000 FXUS61 KPBZ 261913 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 313 PM EDT Fri Aug 26 2016 .SYNOPSIS... Hot and mainly dry weather can be expected until late Sunday. && .NEAR TERM /THROUGH TONIGHT/... Upper ridge will maintain it`s hold on the region tonight. A weak impulse riding along the periphery of the upper ridge supported an area of thunderstorms over Indiana that have since dissipated. However, outflow from those storms may support additional development over southeastern Ohio early where some instability and weak shear exists. Have opted to keep low PoPs for now and will monitor development over the next few hours. Otherwise, expect decreasing dewpoints and clear, calm conditions to allow for lows near normal overnight. Some patchy fog may be possible, mainly in river valleys in the morning. && .SHORT TERM /SATURDAY THROUGH MONDAY/... Strong high pressure will build over the Mid Atlantic states through the weekend. Despite weak southerly flow on Saturday, expect above average temperatures, as 850hpa temperatures approach 21C. Better Gulf moisture will remain along the periphery of the ridge on Saturday but a shortwave crossing the northern Great Lakes will begin to break down this ridge late Sunday. Will return pop chances by late afternoon, with PoPs continuing with the passage of a weak front through Monday. && .LONG TERM /MONDAY NIGHT THROUGH THURSDAY/... Shortwave energy and tropical encroachment on the Southeastern Coast is progged to flatten flow across the northern tier of the CONUS next week. The disturbances in flow would support periodic, and diurnally-enhanced precip chances, but confidence in timing and the magnitude of the pattern change are low, so the forecast was constructed with chance PoPs and an ease away from the warmth by the latter half of the week. && .AVIATION /19Z FRIDAY THROUGH WEDNESDAY/... VFR conditions are expected through the forecast period. Limited patchy river valley fog saturday morning in southern parts of the county warning area. .OUTLOOK /FRIDAY NIGHT THROUGH TUESDAY/... The next chance for restrictions should come with the approach of a front late Sunday and Monday. && .CLIMATE... So far as of today 8-26-2016 Pittsburgh International has had an average temperature of 76.0 degrees for the month of August. That is 4.3 degrees above normal. So far KPIT is tied for the 4th warmest August Current top 10 warmest August for PIT 78.7 August 1900 77.7 August 1995 76.6 August 1947 76.6 August 1918 76.0 August 1881 75.6 August 1906 75.2 August 1878 75.2 August 1937 75.1 August 1988 75.0 August 1901 && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. && $$

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