178 FNUS71 KBOX 302347 FWSBOX Spot Forecast for Crowes Pasture RX burn...MA DCR National Weather Service Boston/Norton MA 747 PM EDT Thu Mar 30 2023 Forecast is based on ignition time of 1000 EDT on March 31. If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION... Mainly dry through early afternoon. Increasing risk for rain late afternoon into Friday evening. More widespread rain should arrive late Friday night and continue into Saturday. Minimum relative humidities expected to range from 35 to 45 percent Friday, and 85 to 95 percent Saturday. .OUTLOOK...Sunday through Wednesday... High pressure off the Mid Atlantic coast should provide mainly dry weather for Sunday through Wednesday. .FRIDAY... Sky/weather.........Partly sunny (55-65 percent) then becoming cloudy (90-100 percent). Slight chance of rain early in the afternoon. Chance of rain late in the afternoon, then rain likely late in the afternoon. CWR.................0 percent increasing to 50 percent late in the afternoon. Max temperature.....Around 45. Min humidity........39 percent. Dewpoint............19 increasing to 30. Min apparent temp...36. Surface winds.......Southwest winds around 7 mph shifting to the south 7 to 8 mph with gusts to around 22 mph late in the afternoon. Wind (20 ft)........Southwest winds 7 to 8 mph with gusts to around 22 mph. Mixing height.......2200-3000 ft AGL. Transport winds.....West 10 to 15 mph shifting to the southwest 17 to 24 mph late in the afternoon. Smoke dispersal.....Fair to excellent (20200-62400 knot-ft). LVORI...............2. ADI.................32 increasing to 55. Haines Index........3 to 4 OR very low potential for large plume dominated fire growth to low potential for large plume dominated fire growth. CEILING (KFT).......20 decreasing to 3.5. TIME (EDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........48 64 55 51 73 89 95 100 Weather cov..... SCH CHC CHC LKY Weather type.... RN RN RN RN Tstm cov........ CWR.............0 0 0 0 50 50 50 50 Temp............40 42 43 44 44 43 43 43 Dewpoint........18 19 21 23 26 28 30 32 RH..............41 39 41 43 49 55 60 65 Heat index (F)..36 38 39 40 40 39 38 38 20 FT wind dir..W W SW SW S S S S 20 FT wind spd..7 7 7 7 7 7 8 8 20 FT wind gust.14 14 14 15 16 18 20 22 Surface wnd dir.W W SW SW S S S S Surface wnd spd.7 7 7 7 7 7 8 8 Surface wnd gst.14 14 14 15 16 18 20 22 Mix hgt (kft)...2.2 2.3 2.4 2.5 2.5 2.7 2.8 3.0 Transp wind dir.W W W SW SW SW SW SW Transp wind spd.10 10 13 15 17 20 22 24 LVORI...........2 2 1 1 1 1 1 1 ADI.............29 28 35 42 50 59 51 58 Haines index....4 4 4 4 4 4 3 3 VRate kt-ft/100020 21 26 32 38 46 54 62 Ceiling (kft)...20 15 14 12 10 8.0 6.0 3.5 .FRIDAY NIGHT... Sky/weather.........Cloudy (95-100 percent). Rain in the evening. Chance of rain after midnight. Areas of fog until just after midnight. CWR.................50 percent increasing to 100 percent until just after midnight, then decreasing to 76 percent early in the morning. Min temperature.....Around 42. Max humidity........96 percent. Dewpoint............36 increasing to 45. Min apparent temp...37. Surface winds.......South winds 8 to 14 mph. Wind (20 ft)........South winds 8 to 14 mph. Mixing height.......400-2200 ft AGL decreasing to 100-200 ft AGL around midnight. Transport winds.....South 16 to 24 mph. Smoke dispersal.....Poor to good (1500-46700 knot-ft). LVORI...............4. ADI.................30 decreasing to 18 until just after midnight. Haines Index........2 to 3 OR very low potential for large plume dominated fire growth. CEILING (KFT).......2.5 decreasing to 0.3. TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........100 100 100 100 100 100 100 99 99 99 100 100 Weather cov.....DEF LKY DEF LKY LKY CHC CHC CHC CHC CHC CHC CHC Weather type....RN RN RN RN RN RNF RNF RNF RNF RNF RNF RNF Tstm cov........ CWR.............50 50 100 100 100 100 100 100 80 80 80 80 Temp............43 42 42 43 44 45 46 47 48 48 48 48 Dewpoint........34 36 38 40 42 44 44 45 46 46 46 46 RH..............70 79 86 89 93 96 93 93 93 93 93 93 Heat index (F)..38 37 37 37 38 39 40 41 43 43 44 44 20 FT wind dir..S S S S S S S S SW SW SW SW 20 FT wind spd..8 8 8 10 12 14 13 13 12 10 9 8 20 FT wind gust.22 23 21 21 21 24 22 22 21 20 20 18 Surface wnd dir.S S S S S S S S SW SW SW SW Surface wnd spd.8 8 8 10 12 14 13 13 12 10 9 8 Surface wnd gst.22 23 21 21 21 24 22 22 21 20 20 18 Mix hgt (kft)...2.2 1.5 0.7 0.6 0.4 0.2 0.2 0.2 0.1 0.1 0.1 0.1 Transp wind dir.S S S S S S S SW SW SW SW SW Transp wind spd.24 24 24 23 23 22 21 21 20 18 17 16 LVORI...........3 3 4 4 5 5 5 5 5 5 5 5 ADI.............32 27 22 21 21 20 19 19 18 16 15 14 Haines index....3 2 2 2 3 3 3 3 3 3 2 2 VRate kt-ft/100047 31 15 11 8 5 4 3 2 2 2 2 Ceiling (kft)...2.5 1.5 1.0 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.3 $$ Forecaster...Belk Requested by...Brian Everett Type of request...PRESCRIBED .TAG 2307926.0/BOX .DELDT 03/30/23 .EMAIL bfeverett@gmail.com