612
FNUS71 KBOX 051433
FWSBOX
SPOT FORECAST FOR BIG RIVER FIRES...RI DEM
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
1033 AM EDT FRI JUN 5 2026
FORECAST IS BASED ON FORECAST START TIME OF 1100 EDT ON JUNE 05.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL
WEATHER SERVICE.
DISCUSSION
MOSTLY SUNNY SKIES WITH WEST NORTHWEST WINDS OF 5-10 MPH BECOMING
WEST SOUTHWEST BY LATE AFTERNOON. AFTERNOON HIGH TEMPERATURES WILL
REACH THE UPPER 80S TO NEAR 90. MINIMUM AFTERNOON RELATIVE
HUMIDITY VALUES WILL DROP TO BETWEEN 20 AND 30 PERCENT.
WINDS BECOME LIGHT TO CALM AFTER SUNSET ALLOWING FOR RELATIVE
HUMIDITY VALUES TO QUICKLY RECOVER THIS EVENING.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 87.
MIN HUMIDITY........28 PERCENT.
DEWPOINT............51.
MAX APPARENT TEMP...84.
SURFACE WINDS (MPH).WEST WINDS AROUND 7 MPH SHIFTING TO THE
SOUTHWEST AROUND 8 MPH LATE IN THE AFTERNOON.
WIND (20 FT)........NORTHWEST WINDS AROUND 7 MPH SHIFTING TO THE
SOUTHWEST AROUND 8 MPH LATE IN THE AFTERNOON.
MIXING HEIGHT.......6700 FT AGL.
TRANSPORT WINDS.....NORTHWEST 12 TO 13 MPH.
SMOKE DISPERSAL.....GOOD (46100 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (73700 KNOT-FT) IN THE
AFTERNOON.
LVORI...............1.
ADI.................62 TO 92.
CEILING (KFT).......20 INCREASING TO 25 LATE IN THE AFTERNOON.
EYE LEVEL WINDS.....WEST WINDS AROUND 4 MPH SHIFTING TO THE
SOUTHWEST AROUND 5 MPH LATE IN THE AFTERNOON.
TIME (EDT) 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........32 33 32 29 27 28 43
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0
TEMP............80 83 84 85 86 87 86
DEWPOINT........50 50 50 50 50 50 52
RH..............35 32 31 30 29 28 31
HEAT INDEX (F)..80 81 82 83 84 84 84
20 FT WIND DIR..NW W W W W SW SW
20 FT WIND SPD..7 7 7 7 7 8 8
20 FT WIND GUST.14 14 15 14 14 13 14
EYE LVL WND DIR.NW W W W W SW SW
EYE LVL WND SPD.4 4 4 4 4 5 5
EYE LVL WND GST.8 8 9 8 8 8 8
SURFACE WND DIR.NW W W W W SW SW
SURFACE WND SPD.7 7 7 7 7 8 8
SURFACE WND GST.14 14 15 14 14 13 14
MIX HGT (KFT)...4.6 5.7 6.3 6.5 6.6 6.7 6.4
TRANSP WIND DIR.NW NW NW W W W W
TRANSP WIND SPD.12 13 13 13 13 13 13
LVORI...........1 1 1 1 1 1 1
ADI.............62 81 87 90 91 92 88
VRATE KT-FT/1K..46 63 69 72 73 74 70
VENTRATE CAT....FR GD GD GD GD GD GD
CEILING (KFT)...20 20 20 20 20 25 25
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CWR.................0 PERCENT.
MIN TEMPERATURE.....AROUND 63.
MAX HUMIDITY........78 PERCENT.
DEWPOINT............55.
MAX APPARENT TEMP...83.
SURFACE WINDS (MPH).SOUTHWEST WINDS 5 TO 7 MPH IN THE EVENING
BECOMING LIGHT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 7 MPH IN THE EVENING
BECOMING LIGHT.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 8 TO 12 MPH.
SMOKE DISPERSAL.....GOOD (38600 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (2800 KNOT-FT) LATE IN THE
NIGHT.
LVORI...............3.
ADI.................53 EARLY IN THE EVENING DECREASING TO 4 LATE IN
THE NIGHT.
CEILING (KFT).......25 DECREASING TO 7.0.
EYE LEVEL WINDS.....SOUTHWEST WINDS UP TO 4 MPH IN THE EVENING
BECOMING LIGHT.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........42 47 46 38 30 36 34 39 38 36 31 13
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............84 81 77 74 72 70 68 67 65 64 63 63
DEWPOINT........54 55 56 55 54 55 55 55 56 56 56 56
RH..............36 41 48 51 53 59 63 65 73 75 78 78
HEAT INDEX (F)..83 81 77 74 72 70 68 67 65 64 63 63
20 FT WIND DIR..SW SW SW SW SW SW SW SW SW SW SW SW
20 FT WIND SPD..7 7 6 6 5 5 5 3 3 3 3 3
20 FT WIND GUST.13 9 8 8 9 10 10 9 9 8 8 8
EYE LVL WND DIR.SW SW SW SW SW SW SW SW SW SW SW SW
EYE LVL WND SPD.4 4 4 4 3 3 3 2 2 2 2 2
EYE LVL WND GST.8 5 5 5 5 6 6 5 5 5 5 5
SURFACE WND DIR.SW SW SW SW SW SW SW SW SW SW SW SW
SURFACE WND SPD.7 7 6 6 5 5 5 3 3 3 3 3
SURFACE WND GST.13 9 8 8 9 10 10 9 9 8 8 8
MIX HGT (KFT)...3.9 0.8 0.4 0.4 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4
TRANSP WIND DIR.W W SW W W W W W SW SW SW SW
TRANSP WIND SPD.12 8 8 10 10 10 10 10 8 9 9 9
LVORI...........1 2 2 2 2 3 3 3 3 4 4 4
ADI.............53 9 5 5 5 5 5 5 4 4 4 9
VRATE KT-FT/1K..39 6 3 4 4 4 4 4 3 3 3 3
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
CEILING (KFT)...25 20 20 15 12 7.0 7.0 7.0 7.0 7.0 7.0 7.0
SATURDAY
SKY/WEATHER.........MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS EARLY IN THE AFTERNOON.
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 88.
MIN HUMIDITY........42 PERCENT.
DEWPOINT............59 INCREASING TO 62 LATE IN THE AFTERNOON.
MAX APPARENT TEMP...87.
SURFACE WINDS (MPH).LIGHT WINDS BECOMING SOUTHWEST 5 TO 13 MPH WITH
GUSTS TO AROUND 29 MPH.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHWEST 5 TO 13 MPH WITH
GUSTS TO AROUND 29 MPH. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS EARLY IN THE
AFTERNOON.
MIXING HEIGHT.......5200 FT AGL.
TRANSPORT WINDS.....WEST 9 TO 17 MPH INCREASING TO SOUTHWEST 21 TO
25 MPH EARLY.
SMOKE DISPERSAL.....POOR (3000 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (102200 KNOT-FT) IN THE
AFTERNOON INCREASING TO GOOD (41400 KNOT-FT)
EARLY IN THE MORNING INCREASING TO EXCELLENT
(110100 KNOT-FT) IN THE AFTERNOON IN THE
AFTERNOON.
LVORI...............3.
ADI.................9 EARLY IN THE MORNING INCREASING TO 105 IN THE
AFTERNOON.
CEILING (KFT).......10 INCREASING TO 13 IN THE MORNING, THEN
DECREASING TO 10 DECREASING TO 9.0 EARLY IN THE
AFTERNOON DECREASING TO 8.0 DECREASING TO 7.0
LATE IN THE AFTERNOON.
EYE LEVEL WINDS.....LIGHT WINDS BECOMING SOUTHWEST UP TO 8 MPH WITH
GUSTS TO AROUND 17 MPH.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........21 30 38 37 36 35 42 49 56 56 57 58
WEATHER COV..... SCH SCH
WEATHER TYPE.... RW RW
TSTM COV........ SCH SCH
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............65 69 73 77 82 85 87 87 87 86 85 84
DEWPOINT........57 59 61 61 61 61 61 61 61 61 61 62
RH..............75 70 66 58 49 45 42 42 42 43 45 48
HEAT INDEX (F)..65 69 73 77 83 85 87 87 87 86 85 85
20 FT WIND DIR..SW SW SW SW SW SW SW SW SW SW SW SW
20 FT WIND SPD..3 5 5 7 9 10 12 13 13 13 13 13
20 FT WIND GUST.7 8 8 14 17 22 23 25 26 28 28 29
EYE LVL WND DIR.SW SW SW SW SW SW SW SW SW SW SW SW
EYE LVL WND SPD.2 3 3 4 5 6 7 8 8 8 8 8
EYE LVL WND GST.4 5 5 8 10 13 14 15 16 17 17 17
SURFACE WND DIR.SW SW SW SW SW SW SW SW SW SW SW SW
SURFACE WND SPD.3 5 5 7 9 10 12 13 13 13 13 13
SURFACE WND GST.7 8 8 14 17 22 23 25 26 28 28 29
MIX HGT (KFT)...0.4 0.4 0.7 1.6 3.5 4.7 5.1 5.2 5.0 4.9 4.9 2.1
TRANSP WIND DIR.SW W W W W SW SW SW SW SW SW SW
TRANSP WIND SPD.9 10 10 14 17 21 23 24 25 21 22 23
LVORI...........4 3 3 2 1 1 1 1 1 1 1 1
ADI.............9 10 10 29 73 105 96 102 104 85 90 58
VRATE KT-FT/1K..3 4 6 19 52 85 102 110 109 88 93 41
VENTRATE CAT....PR PR PR PR FR GD VGD VGD VGD GD GD FR
CEILING (KFT)...10 13 15 14 12 11 10 9.0 8.0 8.0 7.0 7.0
FORECASTER...FRANK
REQUESTED BY...MATT IWUC
TYPE OF REQUEST...WILDFIRE
.TAG 2615029.0/BOX
.DELDT 06/05/26
.FORMATTERVERSION 2.0.0
.EMAIL GREGORY.RATHBUN@DEM.RI.GOV,MATTHEW.IWUC@DEM.RI.GOV,BEN.ARNOLD@DEM.RI.GOV
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