####018006337#### FNUS71 KBTV 261044 FWSBTV Spot Forecast for GMFL Upper White River and Perry Basin Rx...USFS National Weather Service Burlington VT 644 AM EDT Fri Apr 26 2024 Forecast is based on ignition time of 0800 EDT on April 26. If conditions become unrepresentative...contact the National Weather Service. Please contact our office at (802) 658-0207, if you have questions or concerns with this forecast. .DISCUSSION... Sunny conditions will prevail across the region. Most regions had good recoveries of relative humidity overnight, but sites near Granville are reporting values around 60 percent already. Minimum relative humidity values will occur around 1 PM to 5 PM today, and will range between 20 to 25 percent. Winds today will be largely terrain driven. Winds will initially be light and variable. Given the terrain composition, think the wind direction will favor north or northeasterly winds near the site this afternoon. Wind speeds will be around 5 mph today. For tonight, warmer minimum temperatures should result in poorer recovery of relative humidity. Winds will transition towards south or southeast winds with little increase in moisture. By tomorrow afternoon, wind speeds are likely to be 5 to 10 mph with gusts 15 to 20 mph possible. Minimum relative humidity values on Saturday will likely range between 25 and 30 percent. Scattered rain showers will become possible heading into Sunday. .REST OF TODAY... Sky/weather.........Sunny (0-10 percent). Chance of pcpn......0 percent. LAL.................1. Begin/end of pcpn... Max temperature.....Around 53. Min humidity........23 percent. Wind (20 ft)........Light winds becoming northeast around 5 mph. Mixing height.......6200 ft AGL. Transport winds.....North 6 to 8 mph. Haines Index........4 or low potential for large plume dominated fire growth. TIME (EDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........2 2 2 3 3 4 6 6 6 4 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 LAL.............1 1 1 1 1 1 1 1 1 1 Temp............28 33 38 43 46 49 51 52 53 53 RH..............60 49 38 32 28 25 24 24 23 24 20 FT wind dir..N N N NE E NE NE NE NE N 20 FT wind spd..1 2 3 3 3 3 5 5 5 5 20 FT wind gust.3 5 5 6 6 6 6 6 6 6 Mix hgt (kft)...1.6 3.1 4.5 5.0 5.5 5.8 6.2 6.1 5.9 5.8 Transp wind dir.N N N N N N N NW NW NW Transp wind spd.6 7 8 8 7 7 7 8 8 7 Haines index....4 4 4 4 4 4 4 4 4 4 .TONIGHT... Sky/weather.........Clear (0-5 percent). Chance of pcpn......0 percent. LAL.................1. Begin/end of pcpn... Min temperature.....Around 32. Max humidity........66 percent. Wind (20 ft)........North winds around 5 mph early in the evening becoming light. Mixing height.......400 ft AGL. Transport winds.....North 6 to 7 mph shifting to the southeast overnight. Haines Index........3 to 4 or very low to low potential for large plume dominated fire growth. TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........3 1 1 1 1 1 1 1 1 1 1 3 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).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............51 49 46 43 40 38 36 35 34 33 33 32 RH..............28 31 37 43 48 52 56 56 58 61 61 66 20 FT wind dir..N NW NW N N E E E SE SE SE SE 20 FT wind spd..5 3 3 2 1 1 1 2 2 2 2 2 20 FT wind gust.6 5 5 5 3 3 3 5 5 5 3 3 Mix hgt (kft)...4.8 1.2 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 Transp wind dir.NW N N N NE NE E E E SE SE S Transp wind spd.7 6 6 6 5 6 6 6 6 6 7 7 Haines index....4 4 4 4 4 4 4 4 3 3 3 3 .SATURDAY... Sky/weather.........Sunny (15-25 percent). Chance of pcpn......0 percent. LAL.................1. Begin/end of pcpn... Max temperature.....Around 59. Min humidity........28 percent. Wind (20 ft)........Light winds becoming south 5 to 10 mph in the late morning and afternoon. Mixing height.......5000 ft AGL. Transport winds.....South 7 to 15 mph. Haines Index........3 or very low potential for large plume dominated fire growth. TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........7 10 12 15 18 18 19 20 25 28 32 36 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).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............33 33 37 43 48 52 55 57 58 59 59 59 RH..............63 66 59 51 40 35 30 28 28 28 29 30 20 FT wind dir..S S S S S S S S S S S S 20 FT wind spd..2 2 3 5 6 8 9 9 10 10 10 10 20 FT wind gust.5 6 7 9 10 13 14 14 15 15 16 16 Mix hgt (kft)...0.4 0.4 0.8 2.0 3.4 4.4 4.6 4.8 5.0 4.7 4.5 4.2 Transp wind dir.S SE S S S S S S S S S S Transp wind spd.7 7 7 8 9 10 9 12 14 15 15 15 Haines index....3 3 3 3 3 3 3 3 3 3 3 3 $$ Forecaster...Haynes Requested by...Ryan Hughes Type of request...PRESCRIBED .TAG 2412544.0/BTV .DELDT 04/26/24 .FormatterVersion 2.0.0 .EMAIL eric.hughes@usda.gov