Spot Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
288 FNUS71 KBOX 210059 FWSBOX Spot Forecast for Frances Crane WMA North Rx Burn...MassWildlife National Weather Service Boston/Norton MA 859 PM EDT Mon May 20 2024 Forecast is based on ignition time of 0000 EDT on May 20. If conditions become unrepresentative, contact the National Weather Service. .DISCUSSION... Areas of fog, locally dense along with patchy drizzle, developing overnight. Light NE winds with RH values increasing to near 100 percent. Stratus and fog burns off between 9 and 11 am Tuesday followed by increasing sunshine. High confidence in SW winds increasing to 15 to 20 mph with a few higher gusts. RH values dropping to 65 to 70 percent in the afternoon. .REST OF TONIGHT... Sky/weather.........Mostly cloudy. Patchy fog. Areas of fog early, then areas of fog in the late evening and overnight. Patchy drizzle after midnight. CWR.................13 percent. Min temperature.....Around 49. Max humidity........100 percent. Dewpoint............51. Max apparent temp...63. Surface winds (mph).Southwest winds 5 to 10 mph. Wind (20 ft)........Southwest winds 5 to 10 mph. Mixing height.......500 ft AGL. Transport winds.....Southwest 5 to 16 mph. Smoke dispersal.....Fair (18400 knot-ft) early in the evening decreasing to poor (2500 knot-ft) late in the night. LVORI...............7. ADI.................2 to 27. Haines Index........3 to 5 or very low to moderate potential for large plume dominated fire growth. CEILING (KFT).......0.2. TIME (EDT) MIDNGT 2 AM 4 AM 6 AM 8 AM 10 AM NOON 2 PM 4 PM 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM Sky (%).........93 97 97 100 93 79 68 54 43 36 44 60 72 78 87 Weather cov.....PATCHY PATCHY PATCHY PATCHY AREAS AREAS AREAS AREAS AREAS AREAS Weather type....FOG DRZL DRZL DRZL FOG FOG NONE NONE NONE NONE NONE FOG FOG FOG FOG Tstm cov........ CWR.............0 10 10 10 0 0 0 0 0 0 0 0 0 0 0 Temp............50 51 49 50 52 55 58 62 62 59 54 51 50 49 49 Dewpoint........48 48 48 49 51 52 53 54 53 51 51 50 49 49 49 RH..............93 89 96 96 96 90 83 75 72 75 90 96 96 100 100 Heat index (F)..47 51 46 47 52 55 58 62 62 59 54 51 50 49 49 20 ft wind......NE 8 NE 8 NE 8 NE 8 NE 9 NE 9 NE 9 NE 9 NE 9 NE 7 E 7 SE 5 S 2 W 1 SW 1 20 ft wind gust.14 12 12 16 15 17 16 15 14 12 8 7 6 6 7 Surface wind....NE 8 NE 8 NE 8 NE 8 NE 9 NE 9 NE 9 NE 9 NE 9 NE 7 E 7 SE 5 S 2 W 1 SW 1 Surface wnd gst.14 12 12 16 15 17 16 15 14 12 8 7 6 6 7 Mix hgt (ft)....800 900 500 600 600 1200 1500 1700 1500 1200 700 600 600 700 600 Transport wind..NE 15 NE 14 N 12 N 15 NE 15 NE 14 NE 14 N 13 NE 12 NE 9 E 7 SE 6 SE 6 S 5 SW 6 LVORI...........5 5 6 5 6 4 4 3 3 4 6 8 8 10 9 ADI.............13 12 10 16 11 21 27 27 23 15 5 4 3 2 3 Haines index....3 3 3 3 4 3 3 3 3 3 4 4 4 4 5 Vrate kt-ft/1K..11 11 5 8 8 14 18 18 15 10 4 3 3 3 3 Ventrate Cat....POOR POOR POOR POOR POOR POOR POOR POOR POOR POOR POOR POOR POOR POOR POOR Ceiling (kft)...0.3 0.3 0.3 0.3 0.3 0.8 1.0 1.5 1.5 21 2.2 0.3 0.2 0.2 0.2 .TUESDAY... Sky/weather.........Mostly cloudy then becoming mostly sunny. Areas of fog early in the morning. CWR.................0 percent. Max temperature.....Around 65. Min humidity........67 percent. Dewpoint............52. Max apparent temp...64. Surface winds (mph).Light winds becoming southwest around 15 mph. Wind (20 ft)........Southwest winds 5 to 15 mph. Mixing height.......800 ft AGL. Transport winds.....Southwest 7 to 15 mph. Smoke dispersal.....Poor (3200 knot-ft). LVORI...............6. ADI.................6 to 11. Haines Index........4 to 5 or low to moderate potential for large plume dominated fire growth. CEILING (KFT).......0.2 increasing to 0.3 late in the morning, then increasing to 0.4 early increasing to 1.1 early in the afternoon increasing to 8.6 increasing to 22 late in the afternoon decreasing to 1.9. TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM Sky (%).........83 83 74 48 22 37 Weather cov.....AREAS AREAS Weather type....FOG FOG NONE NONE NONE NONE Tstm cov........ CWR.............0 0 0 0 0 0 Temp............50 53 60 63 64 62 Dewpoint........50 52 53 53 54 54 RH..............100 96 78 70 70 75 Heat index (F)..50 53 60 63 64 62 20 ft wind......SW 2 SW 5 SW 8 SW 12 SW 15 SW 15 20 ft wind gust.7 9 15 18 21 22 Surface wind....SW 2 SW 5 SW 8 SW 12 SW 15 SW 15 Surface wnd gst.7 9 15 18 21 22 Mix hgt (ft)....500 600 600 700 800 600 Transport wind..SW 7 SW 8 SW 9 SW 12 SW 15 SW 15 LVORI...........8 7 4 3 3 4 ADI.............7 6 10 9 11 11 Haines index....5 5 5 5 5 4 Vrate kt-ft/1K..3 4 5 7 10 8 Ventrate Cat....POOR POOR POOR POOR POOR POOR Ceiling (kft)...0.2 0.2 0.3 1.1 23 24 .TUESDAY NIGHT... Sky/weather.........Partly cloudy then becoming mostly cloudy. Patchy fog after midnight. CWR.................0 percent. Min temperature.....Around 54. Max humidity........93 percent. Dewpoint............52. Max apparent temp...59. Surface winds (mph).Southwest winds 12 to 15 mph. Wind (20 ft)........Southwest winds 12 to 15 mph. Mixing height.......300 ft AGL. Transport winds.....Southwest 14 to 18 mph. Smoke dispersal.....Poor (4200 knot-ft). LVORI...............5. ADI.................12 to 18. Haines Index........4 to 5 or low to moderate potential for large plume dominated fire growth. CEILING (KFT).......2.7 increasing to 3.6 early in the evening, then decreasing to 3.3 late in the evening decreasing to 2.1 decreasing to 1.0 decreasing to 0.9 decreasing to 0.8 decreasing to 0.7 after midnight increasing to 0.8. TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM Sky (%).........50 60 59 59 59 55 Weather cov..... PATCHY PATCHY PATCHY Weather type....NONE NONE NONE FOG FOG FOG Tstm cov........ CWR.............0 0 0 0 0 0 Temp............59 55 54 54 54 54 Dewpoint........53 52 52 52 52 52 RH..............80 90 93 93 93 93 Heat index (F)..59 55 54 54 54 54 20 ft wind......SW 15 SW 13 SW 12 SW 12 SW 13 SW 13 20 ft wind gust.21 17 17 17 18 18 Surface wind....SW 15 SW 13 SW 12 SW 12 SW 13 SW 13 Surface wnd gst.21 17 17 17 18 18 Mix hgt (ft)....500 500 500 400 400 400 Transport wind..SW 16 SW 17 SW 18 SW 18 SW 18 SW 15 LVORI...........4 5 5 5 5 5 ADI.............12 15 16 16 16 13 Haines index....4 5 5 5 5 5 Vrate kt-ft/1K..8 7 7 7 7 5 Ventrate Cat....POOR POOR POOR POOR POOR POOR Ceiling (kft)...2.7 4.4 2.1 0.9 0.7 0.8 .WEDNESDAY... Sky/weather.........Mostly sunny. Patchy fog early in the morning. CWR.................0 percent. Max temperature.....Around 68. Min humidity........65 percent. Dewpoint............54. Max apparent temp...67. Surface winds (mph).Southwest winds 12 to 14 mph. Wind (20 ft)........Southwest winds 12 to 14 mph. Mixing height.......1100 ft AGL. Transport winds.....Southwest 16 to 22 mph. Smoke dispersal.....Poor (5300 knot-ft) early in the morning increasing to fair (20400 knot-ft) in the afternoon. LVORI...............4. ADI.................15 to 20 increasing to 20 to 29 early, then decreasing to 16 late in the afternoon. Haines Index........4 to 5 or low to moderate potential for large plume dominated fire growth. CEILING (KFT).......0.8 increasing to 25. TIME (EDT) 6 AM 9 AM NOON 3 PM Sky (%).........52 44 25 18 Weather cov.....PATCHY Weather type....FOG NONE NONE NONE Tstm cov........ CWR.............0 0 0 0 Temp............55 61 67 66 Dewpoint........53 54 55 55 RH..............93 78 66 66 Heat index (F)..55 61 67 66 20 FT wind......SW 13G18 SW 13G18 SW 13G21 SW 14G22 Surface wind....SW 13G18 SW 13G18 SW 13G21 SW 14G22 Mix hgt (ft)....400 600 1100 1000 Transport wind..SW 16 SW 20 SW 21 SW 22 LVORI...........5 4 3 3 ADI.............18 15 27 25 Haines index....5 4 4 4 Vrate kt-ft/1K..5 11 19 19 Ventrate Cat....POOR POOR POOR POOR Ceiling (kft)...0.8 6.0 15 25 $$ Forecaster...KJC Requested by...Alex Entrup Type of request...PRESCRIBED .TAG 2414676.0/BOX .DELDT 05/20/24 .FormatterVersion 2.0.0 .EMAIL alex.entrup@mass.gov