Spot Forecast
Issued by NWS Boston, MA

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013
FNUS71 KBOX 061625
FWSBOX

Spot Forecast for Spencer Fair...MEMA
National Weather Service Boston/Norton MA
1225 PM EDT Sun Sep 6 2026

Forecast is based on forecast start time of 1300 EDT on September 06.
If conditions become unrepresentative, contact the National
Weather Service.

.DISCUSSION...
Partly to at times mostly cloudy skies continue across the
Spencer Fair this afternoon. Off-and-on scattered showers will
continue to dot the region through late this afternoon. None of
these showers are heavy and no washouts are expected, with several
hours of dry weather in between. More significant clearing takes
place late this afternoon into tonight. Northerly winds around
5-10 mph today, but will ease up some into tonight. High
temperatures in the mid 60s.


.REST OF TODAY...

Sky/weather.........Partly sunny. Scattered showers early in the
                    afternoon, then isolated showers late in the
                    afternoon.
Chance of pcpn......30 percent.
Chance of rain......19 percent.
Chance of thunder...14 percent.
Begin/end of pcpn...
Rainfall amount.....0.01 inches.
Pcpn amount.........0.01 inches.
Mixing height.......4200 ft AGL.
Transport winds.....North 7 to 13 mph.
Smoke dispersal.....Fair (20400 knot-ft) early in the morning
                    increasing to good (45900 knot-ft) in the
                    afternoon.
LVORI...............5.
ADI.................1 early in the morning increasing to 63 in the
                    afternoon.

TIME (EDT)      1PM 2PM 3PM 4PM 5PM
Sky (%).........81  77  69  62  54
Weather cov.....SCT SCT ISO ISO ISO
Weather type....RW  RW  RW  RW  RW
Tstm cov........
Chc of pcpn (%).30  30  20  20  20
Chc of rain (%).20  20  20  20  20
Chc of thdr (%).10  10  10  10  0
Mix hgt (kft)...3.8 3.4 4.1 4.2 4.1
Transp wind dir.N   N   N   N   N
Transp wind spd.8   7   10  13  13
LVORI...........6   3   3   3   3
ADI.............1   29  51  63  62
Vrate kt-ft/1K..27  20  37  46  45
Ventrate Cat....PR  PR  PR  FR  FR

.TONIGHT...

Sky/weather.........Partly cloudy then becoming clear.
Chance of pcpn......10 percent.
Chance of rain......13 percent.
Chance of thunder...1 percent.
Begin/end of pcpn...
Rainfall amount.....0.01 inches.
Pcpn amount.........0.01 inches.
Mixing height.......400 ft AGL.
Transport winds.....Northwest 8 to 10 mph.
Smoke dispersal.....Fair (17500 knot-ft) early in the evening
                    decreasing to poor (2900 knot-ft) late in the
                    night.
LVORI...............6.
ADI.................4 to 26.

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........50  46  42  22  2   1   1   6   9   3   5   5
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).10  10  0   0   0   0   0   0   0   0   0   0
Chc of rain (%).10  10  10  0   0   0   0   0   0   0   10  0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Mix hgt (kft)...1.9 1.0 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
Transp wind dir.N   N   N   N   NW  N   N   N   N   NW  NW  NW
Transp wind spd.10  9   8   8   8   8   9   9   9   9   9   9
LVORI...........3   5   5   6   6   6   6   6   6   8   6   6
ADI.............26  4   4   4   4   4   4   4   4   4   4   4
Vrate kt-ft/1K..18  8   3   3   3   3   4   3   3   4   3   3
Ventrate Cat....PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR

$$
Forecaster...Loconto
Requested by...Kyle Garner
Type of request...OTHER
.TAG 2621323.0/BOX
.DELDT 09/06/26
.FormatterVersion 2.0.0
.EMAIL kyle.garner@mass.gov