141
FNUS71 KBOX 081038
FWSBOX
SPOT FORECAST FOR SOUTHWICK WMA RX FIRE 5/8/2026...MASSWILDLIFE
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
638 AM EDT FRI MAY 8 2026
FORECAST IS BASED ON IGNITION TIME OF 0500 EDT ON MAY 08.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL
WEATHER SERVICE.
DISCUSSION
MAINLY DRY CONDITIONS EXPECTED TODAY. THERE IS A LOWER CHANCE OF A
BRIEF SHOWER MAINLY BETWEEN 2-8 PM. FROM THERE, TURNING UNSETTLED
THIS COMING WEEKEND. WIDESPREAD RAINFALL ARRIVES MID TO LATE
SATURDAY MORNING AND ENDS SATURDAY EVENING. A FEW SHOWERS REMAIN
POSSIBLE ON SUNDAY, ALTHOUGH DOESN'T SEEM TO BE A WIDESPREAD
SOAKING.
REST OF TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY.
CWR.................0 PERCENT.
MIN TEMPERATURE.....AROUND 40.
MAX HUMIDITY........68 PERCENT.
DEWPOINT............30.
MIN APPARENT TEMP...39.
SURFACE WINDS (MPH).LIGHT WINDS.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....WEST AROUND 8 MPH.
SMOKE DISPERSAL.....POOR (3100 KNOT-FT).
LVORI...............3.
ADI.................4.
CEILING (KFT).......9.0.
TIME (EDT) 5AM
SKY (%).........74
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0
TEMP............41
DEWPOINT........30
RH..............65
HEAT INDEX (F)..39
20 FT WIND DIR..W
20 FT WIND SPD..3
20 FT WIND GUST.10
SURFACE WND DIR.W
SURFACE WND SPD.3
SURFACE WND GST.10
MIX HGT (KFT)...0.4
TRANSP WIND DIR.W
TRANSP WIND SPD.8
LVORI...........3
ADI.............4
VRATE KT-FT/1K..3
VENTRATE CAT....PR
CEILING (KFT)...9.0
TODAY
SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY SUNNY.
ISOLATED RAIN SHOWERS LATE IN THE AFTERNOON.
CWR.................6 PERCENT.
MAX TEMPERATURE.....AROUND 61.
MIN HUMIDITY........42 PERCENT.
DEWPOINT............33 INCREASING TO 36 IN THE LATE MORNING AND
AFTERNOON.
MAX APPARENT TEMP...60.
SURFACE WINDS (MPH).LIGHT WINDS BECOMING WEST 5 TO 13 MPH.
WIND (20 FT)........LIGHT WINDS BECOMING WEST 5 TO 13 MPH.
MIXING HEIGHT.......7200 FT AGL.
TRANSPORT WINDS.....WEST 8 TO 17 MPH INCREASING TO 18 TO 20 MPH IN
THE AFTERNOON.
SMOKE DISPERSAL.....POOR (3200 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (78700 KNOT-FT) IN THE
AFTERNOON INCREASING TO EXCELLENT (74800
KNOT-FT) IN THE AFTERNOON.
LVORI...............2.
ADI.................8 EARLY IN THE MORNING INCREASING TO 105 IN THE
AFTERNOON.
CEILING (KFT).......9.0 INCREASING TO 10 EARLY IN THE MORNING, THEN
DECREASING TO 9.0 LATE IN THE MORNING
DECREASING TO 8.0 DECREASING TO 7.0 DECREASING
TO 6.0 IN THE AFTERNOON.
TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........55 19 24 41 70 46
WEATHER COV..... ISOLTD ISOLTD
WEATHER TYPE....NONE NONE NONE NONE RNSHWR RNSHWR
TSTM COV........
CWR.............0 0 0 0 10 10
TEMP............42 45 52 57 58 59
DEWPOINT........31 35 36 35 35 37
RH..............65 68 54 43 42 44
HEAT INDEX (F)..40 43 52 57 58 59
20 FT WIND......W 3 W 5 W 8 W 10 W 13 W 13
20 FT WIND GUST.12 13 16 20 23 22
SURFACE WIND....W 3 W 5 W 8 W 10 W 13 W 13
SURFACE WND GST.12 13 16 20 23 22
MIX HGT (FT)....500 2000 5400 6900 7200 5400
TRANSPORT WIND..W 8 W 12 W 14 W 17 W 20 W 18
LVORI...........3 3 1 1 1 1
ADI.............8 30 84 105 69 78
VRATE KT-FT/1K..3 20 64 104 122 86
VENTRATE CAT....POOR POOR GOOD VYGD VYGD GOOD
CEILING (KFT)...9.0 10 8.0 6.0 6.0 6.0
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
CWR.................6 PERCENT.
MIN TEMPERATURE.....AROUND 40.
MAX HUMIDITY........85 PERCENT.
DEWPOINT............36.
MAX APPARENT TEMP...58.
SURFACE WINDS (MPH).WEST WINDS 5 TO 10 MPH IN THE EVENING BECOMING
LIGHT.
WIND (20 FT)........WEST WINDS AROUND 10 MPH DECREASING TO 5 TO 8
MPH IN THE EVENING, THEN BECOMING LIGHT AFTER
MIDNIGHT.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....WEST 6 TO 15 MPH SHIFTING TO THE SOUTHWEST
AROUND 5 MPH EARLY IN THE MORNING, THEN
SHIFTING TO THE SOUTH EARLY IN THE MORNING.
SMOKE DISPERSAL.....GOOD (52000 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (1400 KNOT-FT) LATE IN THE
NIGHT.
LVORI...............3.
ADI.................72 EARLY IN THE EVENING DECREASING TO 2 LATE IN
THE NIGHT.
CEILING (KFT).......12 INCREASING TO 20 EARLY IN THE EVENING, THEN
INCREASING TO 25 EARLY DECREASING TO 20 LATE IN
THE EVENING DECREASING TO 13 DECREASING TO 10
EARLY IN THE MORNING DECREASING TO 8.0.
TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........28 17 20 26 36 55
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CWR.............10 0 0 0 0 0
TEMP............58 54 47 44 41 40
DEWPOINT........36 36 36 36 35 35
RH..............44 50 65 73 79 82
HEAT INDEX (F)..58 54 46 44 41 40
20 FT WIND......W 10 W 6 W 3 SW 2 S 2 S 1
20 FT WIND GUST.17 9 7 5 3 3
SURFACE WIND....W 10 W 6 W 3 SW 2 S 2 S 1
SURFACE WND GST.17 9 7 5 3 3
MIX HGT (FT)....4000 600 400 400 300 400
TRANSPORT WIND..W 15 W 9 W 8 W 7 W 5 SW 5
LVORI...........1 2 3 3 4 5
ADI.............72 4 4 3 2 2
VRATE KT-FT/1K..52 5 3 2 1 1
VENTRATE CAT....FAIR POOR POOR POOR POOR POOR
CEILING (KFT)...12 25 20 15 13 10
FORECASTER...BELK
REQUESTED BY...BEN MAZZEI
TYPE OF REQUEST...PRESCRIBED
.TAG 2612913.1/BOX
.DELDT 05/08/26
.FORMATTERVERSION 2.0.0
.EMAIL BEN.MAZZEI@MASS.GOV
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