122
FNUS71 KBOX 111952
FWSBOX
SPOT FORECAST FOR GREAT SWAMP RX...RI DEM
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
352 PM EDT TUE MAR 11 2025
FORECAST IS BASED ON IGNITION TIME OF 0700 EDT ON MARCH 12.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL
WEATHER SERVICE.
DISCUSSION
NORTH TO NORTHEAST WINDS OF 5 TO 15 MPH WEDNESDAY MORNING WILL
SHIFT TO AN EASTERLY DIRECTION DURING THE AFTERNOON. PLENTY OF
SUNSHINE IS ON TAP FOR WEDNESDAY...BUT WITH HIGHS IN THE UPPER
40S. MINIMUM AFTERNOON RELATIVE HUMIDITY VALUES SHOULD DROP
TO BETWEEN 35 AND 40 PERCENT.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 48.
MIN HUMIDITY........40 PERCENT.
DEWPOINT............28 DECREASING TO 24 EARLY.
MIN APPARENT TEMP...32.
SURFACE WINDS (MPH).NORTHEAST WINDS 7 TO 10 MPH WITH GUSTS TO
AROUND 21 MPH SHIFTING TO THE EAST AROUND 7 MPH
LATE IN THE AFTERNOON.
WIND (20 FT)........NORTHEAST WINDS 7 TO 10 MPH WITH GUSTS TO
AROUND 21 MPH SHIFTING TO THE EAST AROUND 7 MPH
LATE IN THE AFTERNOON.
MIXING HEIGHT.......3200 FT AGL.
TRANSPORT WINDS.....NORTH 9 TO 18 MPH SHIFTING TO THE EAST 8 TO 10
MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (9900 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (36400 KNOT-FT) IN THE
AFTERNOON.
LVORI...............2.
ADI.................16 INCREASING TO 36 TO 45 LATE IN THE MORNING,
THEN INCREASING TO 47 EARLY IN THE AFTERNOON
DECREASING TO 27 TO 35 LATE IN THE AFTERNOON.
CEILING (KFT).......9.0 INCREASING TO 10 EARLY, THEN INCREASING TO
13 AROUND NOON DECREASING TO 11 LATE IN THE
AFTERNOON DECREASING TO 9.0.
TIME (EDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........38 45 35 13 20 17 24 29 38 34 41
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0
TEMP............38 38 39 41 44 45 46 46 47 45 44
DEWPOINT........30 28 27 26 25 24 24 24 24 24 25
RH..............73 67 62 55 47 43 42 42 40 43 47
HEAT INDEX (F)..32 32 32 35 38 40 42 42 44 41 40
20 FT WIND DIR..N N N N NE NE NE NE NE E E
20 FT WIND SPD..8 9 10 10 10 9 8 7 7 7 7
20 FT WIND GUST.21 21 21 21 20 15 14 10 12 12 12
SURFACE WND DIR.N N N N NE NE NE NE NE E E
SURFACE WND SPD.8 9 10 10 10 9 8 7 7 7 7
SURFACE WND GST.21 21 21 21 20 15 14 10 12 12 12
MIX HGT (KFT)...0.8 0.9 1.5 1.9 2.2 2.6 3.0 3.1 3.2 2.7 2.1
TRANSP WIND DIR.N N N N N N N NE NE E E
TRANSP WIND SPD.15 16 18 18 17 16 13 9 8 8 10
LVORI...........3 3 1 1 1 1 1 1 1 2 2
ADI.............16 16 36 43 45 47 47 35 32 27 27
VRATE KT-FT/1K..10 13 24 30 33 36 33 25 22 19 19
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR
CEILING (KFT)...9.0 10 12 15 15 15 15 15 13 11 9.0
WEDNESDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
CWR.................0 PERCENT.
MIN TEMPERATURE.....AROUND 33.
MAX HUMIDITY........85 PERCENT.
DEWPOINT............27.
MIN APPARENT TEMP...27.
SURFACE WINDS (MPH).EAST WINDS 7 TO 8 MPH.
WIND (20 FT)........EAST WINDS 7 TO 8 MPH.
MIXING HEIGHT.......1100 FT AGL.
TRANSPORT WINDS.....EAST 10 TO 12 MPH.
SMOKE DISPERSAL.....FAIR (15200 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (10600 KNOT-FT) LATE IN THE
NIGHT.
LVORI...............3.
ADI.................5 TO 13.
CEILING (KFT).......9.0 DECREASING TO 4.5.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........36 51 59 79 88 88 85 83 81 81 81 81
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............42 39 37 37 37 36 35 35 35 34 34 34
DEWPOINT........25 25 25 26 26 25 26 26 27 28 28 29
RH..............50 57 61 64 64 64 69 69 72 78 78 82
HEAT INDEX (F)..38 33 31 31 31 30 29 29 29 28 27 27
20 FT WIND DIR..E E E E E E NE NE NE NE E E
20 FT WIND SPD..7 8 8 8 8 8 7 7 7 7 8 8
20 FT WIND GUST.10 10 10 10 10 9 9 9 9 9 10 10
SURFACE WND DIR.E E E E E E NE NE NE NE E E
SURFACE WND SPD.7 8 8 8 8 8 7 7 7 7 8 8
SURFACE WND GST.10 10 10 10 10 9 9 9 9 9 10 10
MIX HGT (KFT)...1.5 1.3 1.1 1.5 1.5 1.5 1.5 1.5 1.5 1.4 1.3 1.2
TRANSP WIND DIR.E E E E E E E E E E E E
TRANSP WIND SPD.12 12 12 12 12 12 12 12 12 12 10 10
LVORI...........2 2 3 2 2 2 3 3 3 4 4 4
ADI.............5 13 10 13 13 13 8 8 8 8 9 9
VRATE KT-FT/1K..15 13 11 15 15 15 15 15 15 14 12 11
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
CEILING (KFT)...9.0 8.0 8.0 7.0 7.0 6.0 6.0 5.0 5.0 5.0 4.5 4.5
FORECASTER...FRANK
REQUESTED BY...IWUC
TYPE OF REQUEST...PRESCRIBED
.TAG 2505961.0/BOX
.DELDT 03/11/25
.FORMATTERVERSION 2.0.0
.EMAIL MATTHEW.IWUC@DEM.RI.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page