678
FNUS51 KCAR 181837
FWFCAR
FIRE WEATHER PLANNING FORECAST FOR NORTHERN AND EASTERN MAINE
NATIONAL WEATHER SERVICE CARIBOU ME
236 PM EDT MON MAY 18 2026
DISCUSSION
TONIGHT, RHS RECOVER AND WINDS CALM DOWN WITH LIGHT SOUTH WINDS.
SOME SHOWERS IN NORTHERN AREAS TONIGHT. A ROUND OF SHOWERS AND
THUNDERSTORMS BOTH TUESDAY AND WEDNESDAY COULD BRING A RETURN OF
WETTING RAIN ACROSS THE FORECAST AREA. DEWPOINTS ON TUESDAY WILL
BE HIGH, IN THE 50S AND 60S, AND WINDS WILL BE LIGHT FROM THE
WEST. SOME LIGHTNING, GUSTY WINDS, AND HEAVY RAINS ARE POSSIBLE
IN STRONG STORMS ON TUESDAY. WEDNESDAY COULD ALSO HAVE SOME
THUNDERSTORMS.
MEZ101-190800-
QUEBEC-MAINE BORDERLANDS-
236 PM EDT MON MAY 18 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLDY MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 50 60 50 30
CHANCE OF THUNDER (%) 32(ELEV) 33(ELEV) 20(LTD) 11
TEMP (24H TREND) 48 (+12) 78 (+15) 58 74
RH % (24H TREND) 100 (+28) 61 (+29) 100 43
20FTWND-VAL/AM(MPH) LGT/VAR W 11 G23
20FTWND-RDG/PM(MPH) LGT/VAR W 5 SW 6 G17 W 12 G26
PRECIP AMOUNT 0.04 0.10 0.03 0.00
PRECIP DURATION 4 6 2 1
PRECIP BEGIN 8 PM CONTINUING CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING 4 PM
MIXING HGT(FT-AGL/MSL) 2880 5960
TRANSPORT WND (KTS) W 13 W 24
VENT RATE (KT-FT) 71900 157160
DISPERSION GOOD EXCELLENT
CWR 10 40 20
KBDI <200 <200 <200 <200
REMARKS...NONE.
MEZ102-190800-
NORTH WOODS AND ST. JOHN VALLEY-
236 PM EDT MON MAY 18 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLDY MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 30 70 50 20
CHANCE OF THUNDER (%) 27(ELEV) 34(ELEV) 26(ELEV) 11
TEMP (24H TREND) 46 (+9) 80 (+16) 59 78
RH % (24H TREND) 96 (+24) 56 (+27) 100 40
20FTWND-VAL/AM(MPH) LGT/VAR W 10 G23
20FTWND-RDG/PM(MPH) LGT/VAR W 5 SW 5 W 12 G25
PRECIP AMOUNT 0.02 0.13 0.03 0.00
PRECIP DURATION 3 6 2 1
PRECIP BEGIN 9 PM CONTINUING CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING 6 PM
MIXING HGT(FT-AGL/MSL) 3230 6510
TRANSPORT WND (KTS) W 13 W 25
VENT RATE (KT-FT) 84820 180370
DISPERSION VERY GOOD EXCELLENT
CWR 10 60 30
KBDI <200 <200 <200 <200
REMARKS...NONE.
MEZ103-190800-
EASTERN AROOSTOOK-
236 PM EDT MON MAY 18 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLDY MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 20 80 60 10
CHANCE OF THUNDER (%) 21(LTD) 37(ELEV) 26(ELEV) 12
TEMP (24H TREND) 47 (+8) 81 (+16) 60 81
RH % (24H TREND) 84 (+20) 53 (+31) 97 37
20FTWND-VAL/AM(MPH) LGT/VAR W 10 G26
20FTWND-RDG/PM(MPH) S 5 G17 LGT/VAR LGT/VAR W 14 G28
PRECIP AMOUNT 0.01 0.14 0.04 0.00
PRECIP DURATION 3 5 1 1
PRECIP BEGIN 11 PM CONTINUING CONTINUING 1 PM
PRECIP END CONTINUING CONTINUING 2 AM 6 PM
MIXING HGT(FT-AGL/MSL) 2520 6990
TRANSPORT WND (KTS) W 10 W 25
VENT RATE (KT-FT) 55960 197030
DISPERSION GOOD EXCELLENT
CWR 60 60
KBDI <200 <200 <200 <200
REMARKS...NONE.
MEZ105-190800-
CENTRAL HIGHLANDS-
236 PM EDT MON MAY 18 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE NONE TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 0 70 40 10
CHANCE OF THUNDER (%) 5 39(ELEV) 24(LTD) 12
TEMP (24H TREND) 46 (+4) 85 (+22) 61 81
RH % (24H TREND) 87 (+17) 50 (+13) 89 38
20FTWND-VAL/AM(MPH) LGT/VAR W 10 G26
20FTWND-RDG/PM(MPH) S 6 G17 W 6 SW 5 W 14 G29
PRECIP AMOUNT 0.00 0.06 0.02 0.00
PRECIP DURATION 4 1 0
PRECIP BEGIN 8 AM CONTINUING 12 PM
PRECIP END CONTINUING 9 PM 3 PM
MIXING HGT(FT-AGL/MSL) 4270 6420
TRANSPORT WND (KTS) W 16 W 25
VENT RATE (KT-FT) 113160 218830
DISPERSION VERY GOOD EXCELLENT
CWR 0 30 30
KBDI <200 <200 <200 <200
REMARKS...NONE.
MEZ106-190800-
CENTRAL MAINE NORTH OF BANGOR-
236 PM EDT MON MAY 18 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE NONE TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 0 70 60 20
CHANCE OF THUNDER (%) 5 38(ELEV) 33(ELEV) 13
TEMP (24H TREND) 47 (+3) 88 (+22) 64 84
RH % (24H TREND) 82 (+20) 43 (+16) 83 37
20FTWND-VAL/AM(MPH) LGT/VAR SW 7 G21
20FTWND-RDG/PM(MPH) LGT/VAR SW 5 LGT/VAR W 11 G25
PRECIP AMOUNT 0.00 0.10 0.06 0.00
PRECIP DURATION 3 1 1
PRECIP BEGIN 9 AM CONTINUING 10 AM
PRECIP END CONTINUING 9 PM CONTINUING
MIXING HGT(FT-AGL/MSL) 4370 6630
TRANSPORT WND (KTS) W 15 W 22
VENT RATE (KT-FT) 102160 168020
DISPERSION VERY GOOD EXCELLENT
CWR 0 80 80
KBDI <200 <200 <200 <200
REMARKS...NONE.
MEZ108-190800-
INTERIOR DOWNEAST-
236 PM EDT MON MAY 18 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 0 60 60 30
CHANCE OF THUNDER (%) 5 27(ELEV) 26(ELEV) 15(LTD)
TEMP (24H TREND) 46 (-1) 87 (+19) 62 86
RH % (24H TREND) 90 (+28) 43 (+15) 83 44
20FTWND-VAL/AM(MPH) LGT/VAR W 7 G21
20FTWND-RDG/PM(MPH) LGT/VAR SW 5 LGT/VAR W 10 G23
PRECIP AMOUNT 0.00 0.12 0.07 0.00
PRECIP DURATION 2 1 1
PRECIP BEGIN 2 PM CONTINUING 10 AM
PRECIP END CONTINUING 10 PM CONTINUING
MIXING HGT(FT-AGL/MSL) 4030 5190
TRANSPORT WND (KTS) SW 14 W 22
VENT RATE (KT-FT) 94090 126220
DISPERSION VERY GOOD EXCELLENT
CWR 0 90 90
KBDI <200 <200 <200 <200
REMARKS...NONE.
MEZ112-190800-
COASTAL DOWNEAST-
236 PM EDT MON MAY 18 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 0 50 50 30
CHANCE OF THUNDER (%) 4 21(LTD) 21(LTD) 15(LTD)
TEMP (24H TREND) 45 (-2) 83 (+18) 57 84
RH % (24H TREND) 97 (+32) 47 (+13) 91 48
20FTWND-VAL/AM(MPH) LGT/VAR SW 6 G20
20FTWND-RDG/PM(MPH) LGT/VAR SW 5 LGT/VAR W 9 G21
PRECIP AMOUNT 0.00 0.06 0.04 0.00
PRECIP DURATION 1 1 1
PRECIP BEGIN 2 PM CONTINUING 11 AM
PRECIP END CONTINUING 10 PM CONTINUING
MIXING HGT(FT-AGL/MSL) 1760 3530
TRANSPORT WND (KTS) SW 11 W 18
VENT RATE (KT-FT) 32860 97690
DISPERSION MARGINAL VERY GOOD
CWR 0 40 40
KBDI <200 <200 <200 <200
REMARKS...NONE.
MEZ113-190800-
BANGOR REGION-
236 PM EDT MON MAY 18 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR PCLDY PCLDY PCLDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 0 60 60 20
CHANCE OF THUNDER (%) 2 31(ELEV) 18(LTD) 15(LTD)
TEMP (24H TREND) 47 (-1) 90 (+23) 67 85
RH % (24H TREND) 86 (+24) 40 (+9) 74 39
20FTWND-VAL/AM(MPH) LGT/VAR SW 9 G23
20FTWND-RDG/PM(MPH) S 5 SW 7 SW 5 W 13 G25
PRECIP AMOUNT 0.00 0.10 0.05 0.00
PRECIP DURATION 2 1 1
PRECIP BEGIN 9 AM CONTINUING 9 AM
PRECIP END CONTINUING 8 PM CONTINUING
MIXING HGT(FT-AGL/MSL) 5060 6290
TRANSPORT WND (KTS) W 18 W 22
VENT RATE (KT-FT) 105620 152040
DISPERSION VERY GOOD EXCELLENT
CWR 0 90 90
KBDI <200 <200 <200 <200
REMARKS...NONE.
MEZ114-190800-
EASTERN PENOBSCOT BAY COAST-
236 PM EDT MON MAY 18 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 0 30 40 30
CHANCE OF THUNDER (%) 2 23(LTD) 15(LTD) 15(LTD)
TEMP (24H TREND) 46 (-4) 88 (+22) 60 86
RH % (24H TREND) 95 (+31) 43 (+6) 84 46
20FTWND-VAL/AM(MPH) LGT/VAR SW 8 G23
20FTWND-RDG/PM(MPH) LGT/VAR SW 7 G18 SW 5 G18 W 11 G23
PRECIP AMOUNT 0.00 0.06 0.03 0.00
PRECIP DURATION 1 1 1
PRECIP BEGIN 2 PM CONTINUING 10 AM
PRECIP END CONTINUING 8 PM CONTINUING
MIXING HGT(FT-AGL/MSL) 2240 3650
TRANSPORT WND (KTS) SW 13 W 16
VENT RATE (KT-FT) 47400 74140
DISPERSION FAIR GOOD
CWR 0 40 40
KBDI <200 <200 <200 <200
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 30S. NORTHWEST
WINDS AROUND 15 MPH.
THURSDAY
SUNNY. HIGHS IN THE MID 50S. NORTHWEST WINDS AROUND
15 MPH.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 30S. NORTHWEST
WINDS AROUND 10 MPH.
FRIDAY
SUNNY. HIGHS IN THE LOWER 60S. NORTHWEST WINDS AROUND
10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 30S. NORTHWEST
WINDS AROUND 10 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 60S. NORTHWEST WINDS
AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 40S. SOUTH
WINDS AROUND 5 MPH.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 60S. SOUTHEAST WINDS
AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 40S. SOUTH WINDS
AROUND 5 MPH.
MONDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS IN THE
LOWER 60S. SOUTH WINDS AROUND 5 MPH.
OUTLOOK 8 TO 14 DAYS
TEMPERATURES ABOVE NORMAL. PRECIPITATION NEAR NORMAL.
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