Suppression Forecast
Issued by NWS Boston, MA

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859
FNUS71 KBOX 040640
FWSBOX

Spot Forecast for Birch Hill WMA rx Burn 6/4/2025...Alex Entrup
National Weather Service Boston/Norton MA
240 AM EDT Wed Jun 4 2025

Forecast is based on ignition time of 0500 EDT on June 04.
If conditions become unrepresentative, contact the National
Weather Service.

.DISCUSSION...

Plenty of sunshine today will result in a very warm afternoon.
High temperatures this afternoon should top out in the 85 to 90
degree range with southwest winds increasing to between 5 and 15
mph. Minimum afternoon relative humidity values should drop into
the 25 to 35 percent range. We should see relative humidity values
recover fairly quickly this evening as winds become light and
temperatures drop.

.TODAY...

Sky/weather.........Sunny.
CWR.................0 percent.
Max temperature.....Around 87.
Min humidity........29 percent.
Dewpoint............48 increasing to 52 through early afternoon.
Max apparent temp...85.
Surface winds (mph).Light winds becoming southwest 5 to 10 mph in
                    the late morning and afternoon.
Wind (20 ft)........Southwest winds 5 to 10 mph early in the
                    morning becoming light, then becoming southwest
                    5 to 10 mph in the late morning and afternoon.
Mixing height.......4100 ft AGL.
Transport winds.....Southwest 7 to 16 mph.
Smoke dispersal.....Poor (1200 knot-ft) early in the morning
                    increasing to good (46800 knot-ft) in the
                    afternoon.
LVORI...............MISSING.
ADI.................7 early in the morning increasing to 66 in the
                    afternoon.
CEILING (KFT).......25.

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........25  22  20  16  13  14  15  13  10  11  12  10
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............53  57  63  69  74  79  82  84  86  87  87  86
Dewpoint........47  50  52  52  52  53  52  51  51  51  51  51
RH..............80  77  67  55  46  41  35  32  30  29  29  30
Heat index (F)..53  57  63  69  74  79  81  82  84  85  85  84
20 FT wind dir..SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW
20 FT wind spd..2   2   2   5   6   7   8   9   10  9   9   9
20 FT wind gust.8   8   9   12  14  16  16  16  16  17  17  17
Surface wnd dir.SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW
Surface wnd spd.2   2   2   5   6   7   8   9   10  9   9   9
Surface wnd gst.8   8   9   12  14  16  16  16  16  17  17  17
Mix hgt (kft)...0.2 0.3 0.4 1.4 2.4 3.3 3.6 3.8 4.1 3.9 3.7 3.5
Transp wind dir.SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW
Transp wind spd.7   9   10  13  14  16  15  14  13  13  14  14
LVORI...........M   M   M   M   M   M   M   M   M   M   M   M
ADI.............7   9   10  23  43  66  65  64  62  59  62  59
Vrate kt-ft/1K..1   3   4   16  29  47  47  46  45  43  44  42
Ventrate Cat....PR  PR  PR  PR  PR  FR  FR  FR  FR  FR  FR  FR
Ceiling (kft)...25  25  25  25  25  25  25  25  25  25  25  25

.TONIGHT...

Sky/weather.........Clear.
CWR.................0 percent.
Min temperature.....Around 59.
Max humidity........93 percent.
Dewpoint............54 increasing to 57 until just after midnight.
Max apparent temp...82.
Surface winds (mph).South winds 5 to 8 mph in the evening becoming
                    light.
Wind (20 ft)........South winds 5 to 7 mph in the evening becoming
                    light.
Mixing height.......0 ft AGL.
Transport winds.....Southwest 5 to 14 mph.
Smoke dispersal.....Fair (29300 knot-ft) early in the evening
                    decreasing to poor (200 knot-ft) late in the
                    night.
LVORI...............MISSING.
ADI.................43 early in the evening decreasing to 2 late in
                    the night.
CEILING (KFT).......25 decreasing to 7.0.

TIME (EDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........5      8      5      2      2      5
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
CWR.............0      0      0      0      0      0
Temp............83     74     68     65     62     59
Dewpoint........53     58     57     57     57     57
RH..............36     57     68     75     84     93
Heat index (F)..82     74     68     65     62     59
20 ft wind......SW 8   S 5    S 5    S 3    SW 1   SW 1
20 ft wind gust.16     13     10     8      7      6
Surface wind....SW 8   S 5    S 5    S 3    SW 1   SW 1
Surface wnd gst.16     13     10     8      7      6
Mix hgt (ft)....2400   400    300    200    100    100
Transport wind..SW 14  SW 13  SW 12  SW 9   SW 6   SW 5
LVORI...........M      M      M      M      M      M
ADI.............43     6      5      4      3      2
Vrate kt-ft/1K..29     4      3      2      0      0
Ventrate Cat....POOR   POOR   POOR   POOR   POOR   POOR
Ceiling (kft)...25     25     25     25     25     13

.THURSDAY...

Sky/weather.........Mostly sunny. Slight chance of showers and
                    thunderstorms late in the afternoon.
CWR.................0 percent.
Max temperature.....Around 91.
Min humidity........37 percent.
Dewpoint............60 increasing to 61 early.
Max apparent temp...90.
Surface winds (mph).Light winds becoming southwest 5 to 7 mph in
                    the afternoon.
Wind (20 ft)........Southwest winds 5 to 7 mph early in the morning
                    becoming light, then becoming southwest 5 to 7
                    mph in the afternoon. Gusty and erratic winds
                    expected near thunderstorms late in the
                    afternoon.
Mixing height.......8100 ft AGL.
Transport winds.....West 5 to 9 mph.
Smoke dispersal.....Poor (500 knot-ft) early in the morning
                    increasing to good (57500 knot-ft) in the
                    afternoon.
LVORI...............MISSING.
ADI.................4 early in the morning increasing to 70 in the
                    afternoon.
CEILING (KFT).......13 increasing to 20 early in the morning, then
                    increasing to 25 early decreasing to 20 early
                    in the afternoon decreasing to 13 decreasing to
                    7.0 early in the afternoon decreasing to 6.0.

TIME (EDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........5         7         25        48
Weather cov.....
Weather type....NONE      NONE      NONE      NONE
Tstm cov........
CWR.............0         0         0         0
Temp............62        75        87        90
Dewpoint........58        62        62        61
RH..............87        64        43        38
Heat index (F)..62        75        87        90
20 FT wind......SW 1G5    SW 2G7    SW 5G12   SW 7G14
Surface wind....SW 1G5    SW 2G7    SW 5G12   SW 7G14
Mix hgt (ft)....100       2500      7300      7800
Transport wind..W 5       W 6       W 5       SW 7
LVORI...........M         M         M         M
ADI.............4         19        40        56
Vrate kt-ft/1K..1         13        29        47
Ventrate Cat....POOR      POOR      POOR      FAIR
Ceiling (kft)...13        25        20        6.0

$$
Forecaster...Frank
Requested by...MassWildlife
Type of request...PRESCRIBED
.TAG 2515243.0/BOX
.DELDT 06/04/25
.FormatterVersion 2.0.0
.EMAIL alex.entrup@mass.gov