--------------------------------------------------------------------------- FWF Combo Report generated using the latest Fire Weather Forecasts issued by PBZ/CTP at *** 12:47pm *** on Monday July 20, 2026. --------------------------------------------------------------------------- Fire Weather Planning Forecast National Weather Service Pittsburgh PA 1247 PM EDT Mon Jul 20 2026 Forest- Including the city of Tionesta 1247 PM EDT Mon Jul 20 2026 Tonight Tue Tue Night Wed Cloud Cover Pcldy Mcldy Mcldy Mcldy Precip Type None Tstms Tstms Tstms Chance Precip (%) 0 100 80 30 Chance of Thunder (%) 0 50 50 20 Temp (24h trend) 59 (+9) 77 (-2) 58 70 RH % (24h trend) 88 (-7) 80 (+37) 100 62 Wind 20ft/early(mph) Lgt/Var S 5 G17 Lgt/Var W 5 Wind 20ft/late(mph) Lgt/Var SW 7 G19 Lgt/Var NW 7 G18 Precip Amount 0.00 0.58 0.30 0.01 Precip Duration 7 5 2 Precip Begin 8 AM Continuing Continuing Precip End Continuing Continuing 6 PM Mixing Hgt(m-agl/msl) 800 1360 Mixing Hgt(ft-agl/msl) 2630 4470 Transport Wnd (mph) SW 20 W 16 Vent Rate (kt-ft) 44710 62580 Category Day 3 4 Inversion 7pm 68F/9am 7pm 60F/8am Dispersion 3 4 Max ADI Early 4 Very Poor 64 Good 12 Poor 49 Gen Good Max ADI Late 5 Very Poor 63 Good 5 Very Poor 63 Good Max LVORI Early 3 5 8 9 Max LVORI Late 5 4 9 3 Remarks...ADI is Atmospheric Dispersion Index by Lavdas. LVORI is Low Visibility Occurrence Risk Index. .FORECAST FOR DAYS 3 THROUGH 7... .THURSDAY...Mostly clear. Lows in the lower 50s. Highs in the mid 70s. Light winds. .FRIDAY...Mostly clear. Lows in the mid 50s. Highs around 80. East winds around 5 mph. .SATURDAY...Partly cloudy. Lows around 60. Highs in the lower 80s. Southeast winds around 5 mph. .SUNDAY...Partly cloudy. Lows in the lower 60s. Highs in the mid 80s. Southwest winds around 5 mph. .MONDAY...Mostly cloudy. A chance of showers and thunderstorms. Lows in the mid 60s. Highs in the mid 80s. West winds 5 to 10 mph. $$ --------------------------------------------------------------------------- Fire Weather Planning Forecast for Central Pennsylvania National Weather Service State College, PA 123 AM EDT Mon Jul 20 2026 .DISCUSSION... Dry weather will continue today with less humid conditions. Some wildfire smoke will be noticeable over the Laurel Highlands and western Alleghenies. Widespread showers and thunderstorms are expected on Tuesday with very humid conditions returning. Some storms could be severe and also contain heavy rain. A cooler and less humid airmass arrives Wednesday with a stretch of dry weather lasting through most, if not all, of the weekend. RH forecasts indicate that they should not dip below the mid 30s any of those days, with many places staying above 50%. && Warren- Including the city of Warren 123 AM EDT Mon Jul 20 2026 Today Tonight Tue Cloud Cover Mclear Pcldy Mcldy Precip Type None None Tstms Chance Precip (%) 0 0 80 Chance of Thunder (%) 0 0 80 Temp (24h trend) 80 (+7) 59 (+8) 79 RH % (24h trend) 40 (-10) 93 (-7) 75 20ftWnd-Val/AM(mph) Lgt/Var S 6 G19 20ftWnd-Rdg/PM(mph) Lgt/Var Lgt/Var SW 8 G20 Precip Amount 0.00 0.00 0.49 Precip Duration 6 Precip Begin 10 AM Precip End Continuing Mixing Hgt(ft-agl) 4750 440 3170 Transport Wnd (mph) S 8 S 8 SW 17 Vent Rate (kt-ft) 33250 3080 47550 Dispersion 5 2 5 DSI 2 1 Sunshine Hours 10 4 Max ADI Early 31 Fair 50 Gen Good 58 Gen Good Max ADI Late 53 Gen Good 7 Poor 56 Gen Good Max LVORI Early 9 4 5 Max LVORI Late 2 5 3 Remarks: ADI is Atmospheric Dispersion Index by Lavdas. LVORI is Low Visibility Occurrence Risk Index. .FORECAST FOR DAYS 3 THROUGH 7... .WEDNESDAY...Showers with thunderstorms likely. Lows in the upper 50s. Highs in the upper 60s. Minimum RH 60 percent. West winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows in the upper 40s. Highs in the mid 70s. Minimum RH 41 percent. Light winds. .FRIDAY...Mostly clear. Lows in the lower 50s. Highs in the upper 70s. Minimum RH 40 percent. Light winds. .SATURDAY...Partly cloudy. Lows in the mid 50s. Highs in the lower 80s. Minimum RH 47 percent. Light winds. .SUNDAY...Partly cloudy. Lows in the upper 50s. Highs in the lower 80s. Minimum RH 50 percent. South winds around 5 mph. $$ McKean- Including the city of Bradford 123 AM EDT Mon Jul 20 2026 Today Tonight Tue Cloud Cover Mclear Mcldy Mcldy Precip Type None None Tstms Chance Precip (%) 0 0 80 Chance of Thunder (%) 0 0 80 Temp (24h trend) 79 (+6) 58 (+9) 78 RH % (24h trend) 40 (-8) 98 (-2) 74 20ftWnd-Val/AM(mph) Lgt/Var S 7 G19 20ftWnd-Rdg/PM(mph) Lgt/Var Lgt/Var SW 9 G20 Precip Amount 0.00 0.00 0.47 Precip Duration 4 Precip Begin 10 AM Precip End Continuing Mixing Hgt(ft-agl) 4920 450 3250 Transport Wnd (mph) SW 9 S 8 SW 21 Vent Rate (kt-ft) 39360 3150 58500 Dispersion 5 2 5 DSI 2 1 Sunshine Hours 10 3 Max ADI Early 34 Fair 66 Good 51 Gen Good Max ADI Late 60 Gen Good 8 Poor 52 Gen Good Max LVORI Early 8 4 6 Max LVORI Late 1 6 3 Remarks: ADI is Atmospheric Dispersion Index by Lavdas. LVORI is Low Visibility Occurrence Risk Index. .FORECAST FOR DAYS 3 THROUGH 7... .WEDNESDAY...Showers and a chance of thunderstorms. Lows in the mid 50s. Highs in the upper 60s. Minimum RH 60 percent. West winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows in the upper 40s. Highs in the lower 70s. Minimum RH 40 percent. Northwest winds around 5 mph. .FRIDAY...Mostly clear. Lows in the upper 40s. Highs in the upper 70s. Minimum RH 38 percent. Light winds. .SATURDAY...Partly cloudy. Lows in the mid 50s. Highs in the lower 80s. Minimum RH 46 percent. South winds around 5 mph. .SUNDAY...Partly cloudy. Lows in the upper 50s. Highs in the lower 80s. Minimum RH 48 percent. Southwest winds around 5 mph. $$ Elk- Including the cities of St. Marys and Ridgway 123 AM EDT Mon Jul 20 2026 Today Tonight Tue Cloud Cover Mclear Mcldy Mcldy Precip Type None None Tstms Chance Precip (%) 0 0 80 Chance of Thunder (%) 0 0 80 Temp (24h trend) 79 (+5) 59 (+9) 79 RH % (24h trend) 42 (-9) 97 (-2) 76 20ftWnd-Val/AM(mph) Lgt/Var S 5 G18 20ftWnd-Rdg/PM(mph) Lgt/Var Lgt/Var SW 9 G20 Precip Amount 0.00 0.00 0.33 Precip Duration 4 Precip Begin 10 AM Precip End Continuing Mixing Hgt(ft-agl) 4820 440 3320 Transport Wnd (mph) SW 9 S 7 SW 18 Vent Rate (kt-ft) 38560 2640 53120 Dispersion 5 2 5 DSI 2 1 Sunshine Hours 10 3 Max ADI Early 32 Fair 52 Gen Good 63 Good Max ADI Late 57 Gen Good 5 Very Poor 73 Good Max LVORI Early 9 4 6 Max LVORI Late 1 7 4 Remarks: ADI is Atmospheric Dispersion Index by Lavdas. LVORI is Low Visibility Occurrence Risk Index. .FORECAST FOR DAYS 3 THROUGH 7... .WEDNESDAY...Mostly cloudy. Showers likely and a chance of thunderstorms. Lows in the upper 50s. Highs in the lower 70s. Minimum RH 59 percent. West winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows in the upper 40s. Highs in the mid 70s. Minimum RH 42 percent. Northwest winds around 5 mph. .FRIDAY...Mostly clear. Lows in the lower 50s. Highs in the upper 70s. Minimum RH 41 percent. Light winds. .SATURDAY...Partly cloudy. Lows in the mid 50s. Highs in the lower 80s. Minimum RH 49 percent. Southeast winds around 5 mph. .SUNDAY...Partly cloudy. Lows in the upper 50s. Highs in the lower 80s. Minimum RH 51 percent. South winds around 5 mph. $$ --------------------------------------------------------------------------- .OUTLOOK 8 TO 14 DAYS... Temperatures near normal. Precipitation above normal. --------------------------------------------------------------------------- .END