####018007738#### FNUS71 KBGM 241023 FWSBGM Spot Forecast for SGL 300 Unit 13...PA Game Commission National Weather Service Binghamton NY 623 AM EDT Wed Apr 24 2024 Forecast is based on ignition time of 0500 EDT on April 25. If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION... A strong surface high pressure system moves in from the northwest tonight with light winds and cold temperatures. Given the efficient cooling overnight, there will likely be some weak downslope flow down Indian Cave Creek into Thursday morning. Skies Thursday will be clear with little to no wind in the lowest 5000 feet of the atmosphere so with day time heating, predominant wind direction will likely be up valley especially in the mid to late morning. Winds will become light and variable in the afternoon around and after peak heating. Afternoon RH will likely fall below 30% even at elevations above 2000 feet. Thursday night will be similar to Wednesday night with light down valley wind as there will be efficient cooling again with clear skies. Friday the high pressure center moves east with weak southerly flow developing in the lower atmosphere. With very dry air above the mixed layer and strong solar heating, RH will likely fall back down under 30% in the afternoon. .REST OF TONIGHT... Sky/weather.........Clear (0-10 percent). CWR.................0 percent. LAL.................No Tstms. Min temperature.....Around 25. Max humidity........73 percent. Wind (20 ft)........East around 5 mph. Slope/valley.......East winds around 5 mph. Mixing height.......600 ft AGL. Transport winds.....North around 14 mph. Haines Index........5 or moderate potential for large plume dominated fire growth. SUNRISE.............6:07 am LVORI...............3. ADI.................12. TIME (EDT) 5AM Sky (%).........4 Weather cov..... Weather type.... Tstm cov........ CWR.............0 LAL.............1 Temp............26 RH..............65 20 FT wind dir..E 20 FT wind spd..5 20 FT wind gust.8 Mix hgt (kft)...0.6 Transp wind dir.N Transp wind spd.14 LVORI...........3 ADI.............12 Haines index....5 .THURSDAY... Sky/weather.........Sunny (0-10 percent). CWR.................0 percent. LAL.................No Tstms. Max temperature.....Around 51. Min humidity........24 percent. Wind (20 ft)........ Slope/valley.......East winds become west around 5 mph to 8 mph after 8am then becoming variable at 5 mph to 8 mph after 1 pm. Mixing height.......6500 ft AGL. Transport winds.....North 8 to 13 mph. Haines Index........5 or moderate potential for large plume dominated fire growth. SUNSET..............7:54 pm LVORI...............2. ADI.................13 early in the morning increasing to 59 in the afternoon. TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........2 2 5 4 3 2 1 2 2 2 2 3 Weather cov..... Weather type.... Tstm cov........ CWR.............0 0 0 0 0 0 0 0 0 0 0 0 LAL.............1 1 1 1 1 1 1 1 1 1 1 1 Temp............26 27 30 35 38 41 43 46 49 49 50 51 RH..............65 63 53 43 40 33 33 29 25 25 25 24 20 FT wind dir..N N N N N N N N NW NW NW NW 20 FT wind spd..13 13 10 10 9 7 7 8 8 8 8 8 20 FT wind gust.14 14 12 10 9 9 10 10 10 10 10 Mix hgt (kft)...0.6 0.9 1.4 2.0 2.7 3.5 4.4 5.2 5.8 6.4 6.5 6.0 Transp wind dir.N N N N N N N NW NW NW NW NW Transp wind spd.13 13 12 10 9 8 8 8 8 8 8 8 LVORI...........3 2 2 2 2 1 1 1 1 1 1 1 ADI.............13 17 21 25 29 34 41 48 53 57 59 54 Haines index....5 5 5 5 5 5 5 5 5 5 5 5 .THURSDAY NIGHT... Sky/weather.........Mostly clear (0-10 percent). CWR.................0 percent. LAL.................No Tstms. Min temperature.....Around 32. Max humidity........63 percent. Wind (20 ft)........ Slope/valley.......Variable winds at 3 mph to 5 mph becoming East at 3 to 5 mph after 9 pm. Mixing height.......0 ft AGL. Transport winds.....North 8 to 10 mph shifting to the northeast 6 to 10 mph late in the evening. Haines Index........5 or moderate potential for large plume dominated fire growth. SUNRISE.............6:05 am LVORI...............2. ADI.................3 to 39. TIME (EDT) 6 PM 9 PM MIDNGT 3 AM Sky (%).........2 8 4 2 Weather cov..... Weather type....NONE NONE NONE NONE Tstm cov........ CWR.............0 0 0 0 LAL.............1 1 1 1 Temp............49 42 37 33 RH..............28 43 54 61 20 FT wind......Var 5 E 5 E 5 E 5 Mix hgt (ft)....4300 BLW100 400 300 Transport wind..NW 8 N 9 NE 10 NE 7 LVORI...........1 2 2 3 ADI.............39 3 7 4 Haines index....5 5 5 5 .FRIDAY... Sky/weather.........Sunny (5-15 percent). CWR.................0 percent. LAL.................No Tstms. Max temperature.....Around 57. Min humidity........29 percent. Wind (20 ft)........ Slope/valley.......East winds around 6 mph shifting to the south 7 to 12 mph in the late morning and afternoon. Mixing height.......7600 ft AGL. Transport winds.....East around 5 mph shifting to the southwest late in the morning. Haines Index........4 to 5 or low to moderate potential for large plume dominated fire growth. SUNSET.............. LVORI...............2. ADI.................1 early in the morning increasing to 63 in the afternoon. TIME (EDT) 6 AM 10 AM 2 PM Sky (%).........2 4 13 Weather cov..... Weather type....NONE NONE NONE Tstm cov........ CWR.............0 0 0 LAL.............1 1 1 Temp............34 45 55 RH..............61 45 29 20 FT wind......E 6G7 SE 7G9 S 9G12 Mix hgt (ft)....200 3800 7300 Transport wind..NE 5 S 6 SW 8 LVORI...........3 1 0 ADI.............1 29 63 Haines index....5 4 4 $$ Forecaster...Gill Requested by...Brian Williamson Type of request...PRESCRIBED .TAG 2412032.0/BGM .DELDT 04/24/24 .FormatterVersion 2.0.0 .EMAIL brianwilli@pa.gov