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Spot Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
000 FNUS71 KBOX 250940 FWSBOX Spot Forecast for Southwick WMA Rx Burn...MassWildlife National Weather Service Boston/Norton MA 540 AM EDT Thu Apr 25 2024 Forecast is based on ignition time of 0700 EDT on April 25. If conditions become unrepresentative, contact the National Weather Service. .DISCUSSION... A surface high pressure system is the dominant weather feature for southern New England today through early Saturday. Originating in Canada, this system brings rather dry conditions into play along with light winds, 5-10 mph out of the north, becoming northwest this afternoon. Friday winds will be light and variable, becoming westerly by the afternoon 4-6 mph. Today minimum relative humidity will be between 15 to 20 percent and between 25 and 30 percent on Friday. .OUTLOOK...Saturday through Wednesday... High pressure system shifts east Saturday along with increasing chances of light rain overnight into Sunday. Drier conditions return with increasing temperatures through Monday along with showers early next week. .REST OF TODAY... Sky/weather.........Sunny. CWR.................0 percent. Max temperature.....Around 58. Min humidity........18 percent. Dewpoint............22 decreasing to 13 in the late morning and afternoon. Min apparent temp...28. Surface winds (mph).North winds 5 to 7 mph in the morning becoming light, then becoming north around 5 mph early in the afternoon shifting to the northwest around 6 mph. Wind (20 ft)........North winds around 7 mph decreasing to 5 to 7 mph early, then becoming light early becoming north around 5 mph early in the afternoon shifting to the northwest around 6 mph. Mixing height.......7100 ft AGL. Transport winds.....North 6 to 12 mph shifting to the northwest 7 to 9 mph late in the afternoon. Smoke dispersal.....Poor (5300 knot-ft) early in the morning increasing to good (56200 knot-ft) in the afternoon. LVORI...............2. ADI.................8 increasing to 26 to 32 early, then decreasing to 21 increasing to 28 to 34 early increasing to 48 to 50 increasing to 61 to 69 late in the afternoon. Haines Index........5 to 6 or moderate to high potential for large plume dominated fire growth. CEILING (KFT).......25 decreasing to 20 late in the afternoon. TIME (EDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........8 3 2 2 1 2 3 4 4 3 2 Weather cov..... Weather type.... Tstm cov........ CWR.............0 0 0 0 0 0 0 0 0 0 0 Temp............34 36 40 43 47 50 53 55 57 58 57 Dewpoint........24 21 13 13 12 13 13 14 15 15 15 RH..............66 54 33 29 24 22 20 19 19 18 19 Heat index (F)..28 30 36 40 46 49 53 55 57 58 57 20 FT wind dir..N N N N N N N N N NW NW 20 FT wind spd..7 7 6 5 3 3 5 5 5 6 6 20 FT wind gust.13 13 10 9 7 7 8 8 8 8 8 Surface wnd dir.N N N N N N N N N NW NW Surface wnd spd.7 7 6 5 3 3 5 5 5 6 6 Surface wnd gst.13 13 10 9 7 7 8 8 8 8 8 Mix hgt (kft)...0.8 2.2 2.5 2.9 4.0 4.1 5.1 6.4 6.7 7.1 7.0 Transp wind dir.N N N N N NW NW NW W W NW Transp wind spd.8 12 8 6 7 6 6 7 7 8 9 LVORI...........3 1 2 2 1 2 1 1 1 1 1 ADI.............8 32 26 21 33 28 34 48 50 61 69 Haines index....5 5 5 5 6 6 6 6 6 6 6 Vrate kt-ft/1K..5 22 18 15 24 20 26 38 40 49 56 Ventrate Cat....PR PR PR PR PR PR PR PR FR FR FR Ceiling (kft)...25 25 25 25 25 25 25 25 25 20 20 .TONIGHT... Sky/weather.........Clear. CWR.................0 percent. Min temperature.....Around 28. Max humidity........78 percent. Dewpoint............18 increasing to 23 around midnight. Min apparent temp...25. Surface winds (mph).West winds around 7 mph early in the evening shifting to the southwest around 5 mph, then shifting to the south late in the evening becoming light. Wind (20 ft)........West winds around 7 mph early in the evening shifting to the southwest around 5 mph, then shifting to the south late in the evening becoming light. Mixing height.......400 ft AGL. Transport winds.....Northwest 7 to 8 mph shifting to the east around 6 mph late in the evening, then shifting to the south 6 to 7 mph around midnight shifting to the north 5 to 7 mph early in the morning. Smoke dispersal.....Good (42600 knot-ft) early in the evening decreasing to poor (1500 knot-ft) late in the night. LVORI...............3. ADI.................54 decreasing to 2 to 3. Haines Index........5 or moderate potential for large plume dominated fire growth. CEILING (KFT).......20 increasing to 25 after midnight. TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........3 4 4 3 2 0 0 0 1 0 0 0 Weather cov..... Weather type.... Tstm cov........ CWR.............0 0 0 0 0 0 0 0 0 0 0 0 Temp............55 51 47 43 41 39 37 35 33 31 29 29 Dewpoint........16 17 18 19 20 23 23 23 24 24 23 23 RH..............21 26 31 38 42 52 56 61 69 75 78 78 Heat index (F)..55 51 45 40 38 36 34 35 33 28 25 25 20 FT wind dir..W W SW S S S S E N N N N 20 FT wind spd..7 7 5 5 5 5 3 2 2 3 3 3 20 FT wind gust.8 8 7 7 7 7 6 6 6 6 6 6 Surface wnd dir.W W SW S S S S E N N N N Surface wnd spd.7 7 5 5 5 5 3 2 2 3 3 3 Surface wnd gst.8 8 7 7 7 7 6 6 6 6 6 6 Mix hgt (kft)...6.1 1.4 0.6 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 Transp wind dir.NW NW NW E S S S S N N N N Transp wind spd.8 7 7 6 6 7 7 6 5 6 6 7 LVORI...........1 2 2 2 2 2 3 3 3 3 4 4 ADI.............54 3 3 3 3 3 3 3 2 3 3 3 Haines index....5 5 5 5 5 5 5 5 5 5 5 5 Vrate kt-ft/1K..43 9 4 2 2 3 3 2 2 2 2 2 Ventrate Cat....FR PR PR PR PR PR PR PR PR PR PR PR Ceiling (kft)...20 20 20 20 25 25 25 25 25 25 25 25 .FRIDAY... Sky/weather.........Sunny. CWR.................0 percent. Max temperature.....Around 62. Min humidity........22 percent. Dewpoint............22. Min apparent temp...28. Surface winds (mph).Light winds becoming northeast around 5 mph in the morning, then becoming light early in the afternoon becoming south around 5 mph late in the afternoon. Wind (20 ft)........Light winds becoming northeast around 5 mph in the morning, then becoming light early in the afternoon becoming south around 5 mph late in the afternoon. Mixing height.......7200 ft AGL. Transport winds.....North 5 to 8 mph shifting to the northwest 7 to 8 mph late in the afternoon. Smoke dispersal.....Poor (2300 knot-ft) early in the morning increasing to good (50600 knot-ft) in the afternoon. LVORI...............2. ADI.................6 to 10 increasing to 62. Haines Index........5 or moderate potential for large plume dominated fire growth. CEILING (KFT).......25 decreasing to 15. TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM Sky (%).........0 1 1 2 3 7 Weather cov..... Weather type....NONE NONE NONE NONE NONE NONE Tstm cov........ CWR.............0 0 0 0 0 0 Temp............31 39 48 55 58 61 Dewpoint........21 22 23 23 22 22 RH..............66 50 37 29 25 22 Heat index (F)..28 36 46 55 58 61 20 ft wind......N 3 N 5 NE 5 E 3 SE 3 S 5 20 ft wind gust.6 8 7 7 7 8 Surface wind....N 3 N 5 NE 5 E 3 SE 3 S 5 Surface wnd gst.6 8 7 7 7 8 Mix hgt (ft)....400 1100 3800 5800 6900 7100 Transport wind..N 7 NE 7 NE 7 N 5 NW 6 NW 7 LVORI...........3 2 1 2 1 1 ADI.............7 10 32 30 43 53 Haines index....5 5 5 5 5 5 Vrate kt-ft/1K..3 7 23 23 35 43 Ventrate Cat....POOR POOR POOR POOR POOR FAIR Ceiling (kft)...25 25 25 25 25 20 $$ Forecaster...BRW Requested by...Alex Entrup Type of request...PRESCRIBED .TAG 2411904.0/BOX .DELDT 04/25/24 .FormatterVersion 2.0.0 .EMAIL alex.entrup@mass.gov
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