--------------------------------------------------------------------------- FWF Combo Report generated using the latest Fire Weather Forecasts issued by PBZ/CTP at *** 12:51pm *** on Thursday May 21, 2026. --------------------------------------------------------------------------- Fire Weather Planning Forecast National Weather Service Pittsburgh PA 1250 PM EDT Thu May 21 2026 Forest- Including the city of Tionesta 1250 PM EDT Thu May 21 2026 Tonight Fri Fri Night Sat Cloud Cover Pcldy Mcldy Mcldy Cloudy Precip Type None None Showers Tstms Chance Precip (%) 0 0 90 100 Chance of Thunder (%) 0 0 0 20 Temp (24h trend) 43 (-3) 65 (0) 43 56 RH % (24h trend) 66 (-26) 51 (+13) 99 77 Wind 20ft/early(mph) Lgt/Var E 6 SE 8 G20 SE 11 G24 Wind 20ft/late(mph) Lgt/Var SE 7 G17 SE 9 G23 SE 11 G25 Precip Amount 0.00 0.00 0.28 1.15 Precip Duration 5 12 Precip Begin 7 PM Continuing Precip End Continuing Continuing Mixing Hgt(m-agl/msl) 890 580 Mixing Hgt(ft-agl/msl) 2920 1910 Transport Wnd (mph) SE 18 SE 25 Vent Rate (kt-ft) 46720 42020 Category Day 3 3 Inversion 8pm 48F/8am 3am 48F/4am Dispersion 3 3 Max ADI Early 8 Poor 49 Gen Good 24 Fair 47 Gen Good Max ADI Late 8 Poor 59 Gen Good 24 Fair 49 Gen Good Max LVORI Early 3 3 3 4 Max LVORI Late 3 1 5 4 Remarks...ADI is Atmospheric Dispersion Index by Lavdas. LVORI is Low Visibility Occurrence Risk Index. .FORECAST FOR DAYS 3 THROUGH 7... .SUNDAY...Showers and a chance of thunderstorms. Lows in the mid 50s. Highs in the upper 70s. Southeast winds 5 to 10 mph. .MONDAY...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 50s. Highs in the upper 70s. Southwest winds around 5 mph. .TUESDAY...Mostly cloudy with a chance of showers. Lows in the upper 50s. Highs in the lower 80s. Northeast winds around 5 mph. .WEDNESDAY...Mostly cloudy. A chance of showers. Lows around 60. Highs in the lower 80s. North winds around 5 mph. .THURSDAY...Partly cloudy. Lows in the upper 50s. Highs in the lower 80s. Northeast winds around 5 mph. $$ --------------------------------------------------------------------------- Fire Weather Planning Forecast for Central Pennsylvania National Weather Service State College, PA 432 AM EDT Thu May 21 2026 .DISCUSSION... Periods of rain will linger across south central PA for much of today. Meanwhile, drier air will begin to push into the northern tier, with RH values falling into the 30s pct this afternoon. A lull in the precipitation will follow for tonight. Rain returns to the area from south to north on Friday with a steady, soaking rainfall expected later Friday night and much of Saturday. Southeast flow will increase Saturday with wind gusts of 25-35 mph across the Laurels and NW Mountains. && Warren- Including the city of Warren 432 AM EDT Thu May 21 2026 Today Tonight Fri Cloud Cover Pcldy Mclear Pcldy Precip Type None None None Chance Precip (%) 0 0 0 Chance of Thunder (%) 0 0 0 Temp (24h trend) 66 (+3) 42 (-5) 68 RH % (24h trend) 35 (-25) 68 (-16) 45 20ftWnd-Val/AM(mph) NE 5 G12 E 5 G14 20ftWnd-Rdg/PM(mph) NE 5 G12 NE 5 G12 SE 7 G16 Precip Amount 0.00 0.00 0.00 Precip Duration Precip Begin Precip End Mixing Hgt(ft-agl) 4460 470 3630 Transport Wnd (mph) E 13 E 12 SE 17 Vent Rate (kt-ft) 49060 4700 54450 Dispersion 5 2 5 DSI 2 2 Sunshine Hours 7 6 Max ADI Early 51 Gen Good 63 Good 55 Gen Good Max ADI Late 65 Good 6 Very Poor 63 Good Max LVORI Early 4 3 3 Max LVORI Late 1 3 1 Remarks: ADI is Atmospheric Dispersion Index by Lavdas. LVORI is Low Visibility Occurrence Risk Index. .FORECAST FOR DAYS 3 THROUGH 7... .SATURDAY...Rain. Lows in the upper 40s. Highs in the lower 50s. Minimum RH 79 percent. Southeast winds 10 to 15 mph. .SUNDAY...Showers, warmer. Lows in the upper 40s. Highs in the mid 70s. Minimum RH 61 percent. Southeast winds 5 to 15 mph. .MONDAY...Mostly cloudy with showers likely. Lows in the mid 50s. Highs in the upper 70s. Minimum RH 59 percent. South winds around 5 mph. .TUESDAY...Mostly cloudy. Lows in the mid 50s. Highs around 80. Minimum RH 50 percent. Light winds. .WEDNESDAY...Mostly cloudy. Lows in the upper 50s. Highs in the lower 80s. Minimum RH 48 percent. Northeast winds around 5 mph. $$ McKean- Including the city of Bradford 432 AM EDT Thu May 21 2026 Today Tonight Fri Cloud Cover Pcldy Mclear Pcldy Precip Type None None None Chance Precip (%) 0 0 0 Chance of Thunder (%) 0 0 0 Temp (24h trend) 64 (-1) 38 (-9) 66 RH % (24h trend) 34 (-24) 70 (-20) 43 20ftWnd-Val/AM(mph) NE 5 G12 E 5 G14 20ftWnd-Rdg/PM(mph) NE 5 G12 Lgt/Var SE 7 G16 Precip Amount 0.00 0.00 0.00 Precip Duration Precip Begin Precip End Mixing Hgt(ft-agl) 4240 450 3870 Transport Wnd (mph) E 12 E 12 SE 16 Vent Rate (kt-ft) 42400 4500 54180 Dispersion 5 2 5 DSI 2 2 Sunshine Hours 7 6 Max ADI Early 42 Gen Good 55 Gen Good 51 Gen Good Max ADI Late 57 Gen Good 6 Very Poor 64 Good Max LVORI Early 3 3 3 Max LVORI Late 1 3 1 Remarks: ADI is Atmospheric Dispersion Index by Lavdas. LVORI is Low Visibility Occurrence Risk Index. .FORECAST FOR DAYS 3 THROUGH 7... .SATURDAY...Rain. Lows in the upper 40s. Highs around 50. Minimum RH 77 percent. Southeast winds 10 to 15 mph. .SUNDAY...Showers, warmer. Lows in the mid 40s. Highs in the lower 70s. Minimum RH 61 percent. Southeast winds 5 to 15 mph. .MONDAY...Mostly cloudy with showers likely. Lows in the mid 50s. Highs in the mid 70s. Minimum RH 57 percent. South winds around 5 mph. .TUESDAY...Mostly cloudy. Lows in the mid 50s. Highs in the upper 70s. Minimum RH 48 percent. Light winds. .WEDNESDAY...Mostly cloudy. Lows in the mid 50s. Highs around 80. Minimum RH 45 percent. Northwest winds around 5 mph. $$ Elk- Including the cities of St. Marys and Ridgway 432 AM EDT Thu May 21 2026 Today Tonight Fri Cloud Cover Pcldy Pcldy Mcldy Precip Type None None None Chance Precip (%) 0 0 0 Chance of Thunder (%) 0 0 0 Temp (24h trend) 66 (-1) 41 (-9) 65 RH % (24h trend) 37 (-23) 71 (-20) 50 20ftWnd-Val/AM(mph) NE 5 G12 E 6 G16 20ftWnd-Rdg/PM(mph) NE 5 G12 Lgt/Var SE 8 G17 Precip Amount 0.00 0.00 0.00 Precip Duration Precip Begin Precip End Mixing Hgt(ft-agl) 4280 510 3250 Transport Wnd (mph) E 12 E 12 SE 18 Vent Rate (kt-ft) 42800 5100 52000 Dispersion 5 3 5 DSI 1 2 Sunshine Hours 6 4 Max ADI Early 35 Fair 49 Gen Good 40 Fair Max ADI Late 57 Gen Good 8 Poor 45 Gen Good Max LVORI Early 4 3 3 Max LVORI Late 1 3 1 Remarks: ADI is Atmospheric Dispersion Index by Lavdas. LVORI is Low Visibility Occurrence Risk Index. .FORECAST FOR DAYS 3 THROUGH 7... .SATURDAY...Rain. Lows in the upper 40s. Highs in the lower 50s. Minimum RH 81 percent. Southeast winds 10 to 15 mph. .SUNDAY...Showers, warmer. Lows in the mid 40s. Highs in the lower 70s. Minimum RH 64 percent. Southeast winds 5 to 10 mph. .MONDAY...Mostly cloudy with showers likely. Lows in the mid 50s. Highs in the mid 70s. Minimum RH 60 percent. South winds around 5 mph. .TUESDAY...Mostly cloudy. Lows in the mid 50s. Highs in the upper 70s. Minimum RH 51 percent. Light winds. .WEDNESDAY...Mostly cloudy. Lows in the upper 50s. Highs in the lower 80s. Minimum RH 47 percent. North winds around 5 mph. $$ --------------------------------------------------------------------------- .OUTLOOK 8 TO 14 DAYS... Temperatures above normal. Precipitation below normal. --------------------------------------------------------------------------- .END