428
FNUS71 KBOX 221003
FWSBOX
SPOT FORECAST FOR FREETOWN SF, CENTRAL TRACT- UNIT ECHO...DCR FIRE
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
603 AM EDT WED MAR 22 2023
FORECAST IS BASED ON IGNITION TIME OF 0700 EDT ON MARCH 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
DRY AND MILD CONDITIONS TODAY WITH NE TO START AROUND 5 MPH. WINDS
WILL GRADUALLY SHIFT TO THE SE BY MID MORNING AND S DURING THE
AFTERNOON AT THE FREETOWN SF LOCATION. SCATTERED SHOWERS DEVELOP
THU WITH SOUTHWEST WIND GUSTS 20-30 MPH DEVELOPING IN THE
AFTERNOON.
MINIMUM RELATIVE HUMIDITIES TODAY WILL BE 35 TO 40 PERCENT AT
FREETOWN SF. ON THURSDAY, MINIMUM RELATIVE HUMIDITIES WILL BE 70
TO 80 PERCENT.
OUTLOOK...FRIDAY THROUGH TUESDAY
DRIER ON FRIDAY AS HIGH PRESSURE BUILDS IN. ACTIVE WEATHER ON
SATURDAY INTO EARLY SUNDAY WITH A WINTRY MIX ACROSS THE INTERIOR
AND HIGHER TERRAIN, WHILE THERE IS A COLD RAIN ELSEWHERE. DRIER
WEATHER RETURNS SUNDAY INTO EARLY MONDAY. UNSETTLED ONCE AGAIN
LATE MONDAY INTO TUESDAY.
REST OF TODAY
SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT).
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 57.
MIN HUMIDITY........35 TO 40 PERCENT.
DEWPOINT............32.
MIN APPARENT TEMP...33.
SURFACE WINDS.......LIGHT WINDS BECOMING EAST 5 TO 6 MPH LATE IN
THE MORNING, THEN SHIFTING TO THE SOUTH 6 TO 10
MPH IN THE AFTERNOON.
WIND (20 FT)........LIGHT WINDS BECOMING EAST 5 TO 6 MPH LATE IN
THE MORNING, THEN SHIFTING TO THE SOUTH 6 TO 10
MPH IN THE AFTERNOON.
MIXING HEIGHT.......400-2000 FT AGL INCREASING TO 1600-3200 FT AGL
IN THE AFTERNOON.
TRANSPORT WINDS.....EAST 8 TO 9 MPH SHIFTING TO THE SOUTHWEST 12 TO
14 MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR TO GOOD (2500-32300 KNOT-FT).
LVORI...............3.
ADI.................11 INCREASING TO 34.
HAINES INDEX........5 TO 6 OR MODERATE POTENTIAL FOR LARGE PLUME
DOMINATED FIRE GROWTH TO HIGH POTENTIAL FOR
LARGE PLUME DOMINATED FIRE GROWTH.
CEILING (KFT).......20 INCREASING TO 25 LATE IN THE AFTERNOON.
TIME (EDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........59 60 56 53 49 53 56 60 58 55 53
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0
TEMP............36 38 42 46 51 54 56 57 57 56 54
DEWPOINT........31 32 32 33 33 33 33 33 33 34 34
RH..............82 79 67 60 50 45 42 40 40 43 46
HEAT INDEX (F)..33 36 39 44 51 54 56 57 57 56 54
20 FT WIND DIR..NE NE E E E SE SE SE S S S
20 FT WIND SPD..3 3 5 5 6 6 7 7 9 10 10
20 FT WIND GUST.10 10 13 10 8 7 8 9 10 12 13
SURFACE WND DIR.NE NE E E E SE SE SE S S S
SURFACE WND SPD.3 3 5 5 6 6 7 7 9 10 10
SURFACE WND GST.10 10 13 10 8 7 8 9 10 12 13
MIX HGT (KFT)...0.4 0.4 1.1 1.8 2.0 2.4 2.5 2.9 3.2 2.4 1.6
TRANSP WIND DIR.NE E E E SE S S S S SW S
TRANSP WIND SPD.8 8 9 8 8 7 7 9 12 13 14
LVORI...........4 4 3 2 2 2 2 1 1 1 2
ADI.............8 8 13 19 21 21 22 33 38 36 29
HAINES INDEX....5 5 5 5 5 5 5 5 5 6 6
VRATE KT-FT/10003 3 9 13 14 15 15 23 32 27 19
CEILING (KFT)...20 20 20 20 20 20 20 20 20 20 25
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). SLIGHT CHANCE OF
RAIN SHOWERS. CHANCE OF RAIN SHOWERS AROUND
MIDNIGHT, THEN SLIGHT CHANCE OF RAIN SHOWERS
EARLY IN THE MORNING.
CWR.................0 PERCENT INCREASING TO 33 PERCENT.
MIN TEMPERATURE.....AROUND 43.
MAX HUMIDITY........96 PERCENT.
DEWPOINT............37 INCREASING TO 42 AROUND MIDNIGHT.
MAX APPARENT TEMP...51.
SURFACE WINDS.......SOUTH WINDS 9 TO 10 MPH.
WIND (20 FT)........SOUTH WINDS 9 TO 10 MPH.
MIXING HEIGHT.......400-1200 FT AGL.
TRANSPORT WINDS.....SOUTH 12 TO 15 MPH.
SMOKE DISPERSAL.....POOR TO FAIR (4500-15200 KNOT-FT).
LVORI...............4.
ADI.................12.
HAINES INDEX........4 TO 6 OR LOW POTENTIAL FOR LARGE PLUME
DOMINATED FIRE GROWTH TO HIGH POTENTIAL FOR
LARGE PLUME DOMINATED FIRE GROWTH.
CEILING (KFT).......25 DECREASING TO 0.8.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........59 66 72 79 85 92 90 88 86 87 88 89
WEATHER COV..... SCH CHC CHC CHC CHC CHC SCH SCH
WEATHER TYPE.... RW RW RW RW RW RW RW RW
TSTM COV........
CWR.............0 0 10 10 10 10 10 10 30 30 30 30
TEMP............51 48 46 46 45 45 45 45 45 45 45 45
DEWPOINT........35 35 36 37 39 40 41 42 43 43 44 44
RH..............54 60 68 71 79 82 86 89 93 93 96 96
HEAT INDEX (F)..51 43 41 41 40 40 40 40 40 40 40 40
20 FT WIND DIR..S S S S S S S S S S S S
20 FT WIND SPD..10 10 10 9 10 10 10 10 9 9 9 9
20 FT WIND GUST.14 12 12 14 14 16 16 15 14 14 13 14
SURFACE WND DIR.S S S S S S S S S S S S
SURFACE WND SPD.10 10 10 9 10 10 10 10 9 9 9 9
SURFACE WND GST.14 12 12 14 14 16 16 15 14 14 13 14
MIX HGT (KFT)...1.2 0.6 0.5 0.4 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.S S SW S S SW SW S SW S S S
TRANSP WIND SPD.15 13 14 13 14 14 14 14 13 12 12 12
LVORI...........2 2 3 3 4 4 4 5 5 5 6 6
ADI.............13 11 12 11 12 12 12 12 11 10 10 10
HAINES INDEX....6 5 5 5 5 5 5 4 4 4 4 4
VRATE KT-FT/100015 6 6 5 6 6 6 6 6 5 5 5
CEILING (KFT)...25 25 20 10 7.0 6.0 6.0 6.0 2.0 2.0 2.0 0.8
THURSDAY
SKY/WEATHER.........CLOUDY (85-95 PERCENT). CHANCE OF RAIN SHOWERS.
CWR.................33 PERCENT DECREASING TO 6 PERCENT THROUGH
EARLY AFTERNOON, THEN INCREASING TO 32 PERCENT
LATE IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 56.
MIN HUMIDITY........77 PERCENT.
DEWPOINT............46 INCREASING TO 49 LATE IN THE AFTERNOON.
MAX APPARENT TEMP...54.
SURFACE WINDS.......SOUTHWEST WINDS 8 TO 15 MPH. GUSTS UP TO 28 MPH
EARLY.
WIND (20 FT)........SOUTHWEST WINDS 8 TO 15 MPH. GUSTS UP TO 28 MPH
EARLY.
MIXING HEIGHT.......400-1800 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 12 TO 20 MPH INCREASING TO 22 TO 23
MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR TO GOOD (4400-36900 KNOT-FT).
LVORI...............5.
ADI.................14 INCREASING TO 39.
HAINES INDEX........3 TO 4 OR VERY LOW POTENTIAL FOR LARGE PLUME
DOMINATED FIRE GROWTH TO LOW POTENTIAL FOR
LARGE PLUME DOMINATED FIRE GROWTH.
CEILING (KFT).......0.8 INCREASING TO 2.0.
TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........90 92 88 88 93 93
WEATHER COV.....CHANCE CHANCE CHANCE CHANCE CHANCE CHANCE
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
TSTM COV........
CWR.............30 10 10 10 30 30
TEMP............45 47 51 53 54 54
DEWPOINT........44 45 46 47 47 48
RH..............96 93 83 80 77 80
HEAT INDEX (F)..40 43 51 53 54 54
20 FT WIND......S 9 S 8 SW 10 SW 13 SW 15 SW 15
20 FT WIND GUST.14 14 18 23 28 26
SURFACE WIND....S 9 S 8 SW 10 SW 13 SW 15 SW 15
SURFACE WND GST.14 14 18 23 28 26
MIX HGT (FT)....400 500 1200 1600 1800 1600
TRANSPORT WIND..S 12 S 14 SW 17 SW 20 SW 23 SW 22
LVORI...........6 5 4 3 3 3
ADI.............10 15 25 34 42 37
HAINES INDEX....4 3 3 3 3 3
VRATE KT-FT/10004 6 17 29 37 30
CEILING (KFT)...0.8 0.8 0.8 0.8 1.5 1.5
FORECASTER...BL
REQUESTED BY...AARON WHIDDON
TYPE OF REQUEST...PRESCRIBED
.TAG 2306896.0/BOX
.DELDT 03/22/23
.EMAIL AARON.WHIDDON@MASS.GOV
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