597
FNUS51 KCAR 180641
FWFCAR
FIRE WEATHER PLANNING FORECAST FOR NORTHERN AND EASTERN MAINE
NATIONAL WEATHER SERVICE CARIBOU ME
241 AM EDT MON MAY 18 2026
DISCUSSION
TODAY, EXPECTING DRY CONDITIONS AND AFTERNOON RELATIVE HUMIDITIES
IN THE LOW TO MID 20S IN THE NORTH AND EAST, AND UPPER 20S TO LOW
30S IN THE WEST AND COASTAL DOWNEAST. WINDS WILL INTIALLY BE
LIGHT AND VARIABLE, BECOMING SW THEN S LATE DAY. ACROSS THE BANGOR
REGION TO DOWNEAST COAST AFTERNOON GUSTS WILL INCREASE UP TO
AROUND 20 MPH. A ROUND OF SHOWERS AND THUNDERSTORMS BOTH TUESDAY
AND WEDNESDAY COULD BRING A RETURN OF WETTING RAIN ACROSS THE
FORECAST AREA.
MEZ101-182015-
QUEBEC-MAINE BORDERLANDS-
241 AM EDT MON MAY 18 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 10 50 70
CHANCE OF THUNDER (%) 5 15(LTD) 15(LTD)
TEMP (24H TREND) 62 (-1) 50 (+14) 73
RH % (24H TREND) 26 (-10) 100 (+29) 67
20FTWND-VAL/AM(MPH) LGT/VAR LGT/VAR
20FTWND-RDG/PM(MPH) LGT/VAR LGT/VAR W 5
PRECIP AMOUNT 0.01 0.08 0.14
PRECIP DURATION 1 2 7
PRECIP BEGIN 1 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(FT-AGL/MSL)2930 2770
TRANSPORT WND (KTS) S 8 W 13
VENT RATE (KT-FT) 27500 66360
DISPERSION MARGINAL GOOD
CWR 20 50
KBDI <200 <200 <200
REMARKS...NONE.
MEZ102-182015-
NORTH WOODS AND ST. JOHN VALLEY-
241 AM EDT MON MAY 18 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 0 40 70
CHANCE OF THUNDER (%) 4 12 17(LTD)
TEMP (24H TREND) 64 (-2) 48 (+11) 76
RH % (24H TREND) 21 (-15) 99 (+29) 59
20FTWND-VAL/AM(MPH) LGT/VAR LGT/VAR
20FTWND-RDG/PM(MPH) LGT/VAR LGT/VAR SW 5
PRECIP AMOUNT 0.00 0.05 0.15
PRECIP DURATION 2 6
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT(FT-AGL/MSL)3320 2810
TRANSPORT WND (KTS) SW 8 W 11
VENT RATE (KT-FT) 34930 70160
DISPERSION MARGINAL GOOD
CWR 10 50
KBDI <200 <200 <200
REMARKS...NONE.
MEZ103-182015-
EASTERN AROOSTOOK-
241 AM EDT MON MAY 18 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE SHOWERS TSTMS
CHANCE PRECIP (%) 0 40 70
CHANCE OF THUNDER (%) 2 9 19(LTD)
TEMP (24H TREND) 64 (-5) 48 (+9) 76
RH % (24H TREND) 22 (-11) 87 (+23) 57
20FTWND-VAL/AM(MPH) LGT/VAR LGT/VAR
20FTWND-RDG/PM(MPH) LGT/VAR S 5 G17 LGT/VAR
PRECIP AMOUNT 0.00 0.03 0.15
PRECIP DURATION 2 5
PRECIP BEGIN 7 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT(FT-AGL/MSL)3580 2240
TRANSPORT WND (KTS) SW 8 SW 8
VENT RATE (KT-FT) 35850 25600
DISPERSION FAIR MARGINAL
CWR 0 10 90
KBDI <200 <200 <200
REMARKS...NONE.
MEZ105-182015-
CENTRAL HIGHLANDS-
241 AM EDT MON MAY 18 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 20 20 70
CHANCE OF THUNDER (%) 8 6 23(LTD)
TEMP (24H TREND) 65 (-4) 47 (+5) 82
RH % (24H TREND) 27 (-15) 91 (+23) 54
20FTWND-VAL/AM(MPH) LGT/VAR LGT/VAR
20FTWND-RDG/PM(MPH) S 5 S 5 W 6
PRECIP AMOUNT 0.02 0.01 0.10
PRECIP DURATION 0 1 5
PRECIP BEGIN 2 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(FT-AGL/MSL)2770 3810
TRANSPORT WND (KTS) S 10 W 15
VENT RATE (KT-FT) 36820 98000
DISPERSION FAIR VERY GOOD
CWR 20 20 40
KBDI <200 <200 <200
REMARKS...NONE.
MEZ106-182015-
CENTRAL MAINE NORTH OF BANGOR-
241 AM EDT MON MAY 18 2026
TODAY TONIGHT TUE
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 20 20 60
CHANCE OF THUNDER (%) 6 9 26(ELEV)
TEMP (24H TREND) 66 (-8) 48 (+4) 84
RH % (24H TREND) 23 (-13) 84 (+22) 48
20FTWND-VAL/AM(MPH) LGT/VAR LGT/VAR
20FTWND-RDG/PM(MPH) LGT/VAR LGT/VAR SW 5
PRECIP AMOUNT 0.01 0.01 0.06
PRECIP DURATION 0 1 4
PRECIP BEGIN 4 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(FT-AGL/MSL)3100 3690
TRANSPORT WND (KTS) SW 8 SW 13
VENT RATE (KT-FT) 36160 91500
DISPERSION FAIR VERY GOOD
CWR 10 10 40
KBDI <200 <200 <200
REMARKS...NONE.
MEZ108-182015-
INTERIOR DOWNEAST-
241 AM EDT MON MAY 18 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 20 20 50
CHANCE OF THUNDER (%) 4 11 20(LTD)
TEMP (24H TREND) 68 (-8) 47 (0) 83
RH % (24H TREND) 22 (-12) 91 (+29) 48
20FTWND-VAL/AM(MPH) LGT/VAR LGT/VAR
20FTWND-RDG/PM(MPH) LGT/VAR LGT/VAR SW 6
PRECIP AMOUNT 0.01 0.00 0.02
PRECIP DURATION 0 1 1
PRECIP BEGIN 4 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT(FT-AGL/MSL)3270 3560
TRANSPORT WND (KTS) SW 8 SW 13
VENT RATE (KT-FT) 28650 68320
DISPERSION MARGINAL GOOD
CWR 10 10 20
KBDI <200 <200 <200
REMARKS...NONE.
MEZ112-182015-
COASTAL DOWNEAST-
241 AM EDT MON MAY 18 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 20 20 50
CHANCE OF THUNDER (%) 4 11 16(LTD)
TEMP (24H TREND) 66 (-12) 46 (-1) 77
RH % (24H TREND) 22 (-10) 98 (+33) 55
20FTWND-VAL/AM(MPH) LGT/VAR LGT/VAR
20FTWND-RDG/PM(MPH) LGT/VAR LGT/VAR S 5
PRECIP AMOUNT 0.00 0.00 0.01
PRECIP DURATION 0 1 1
PRECIP BEGIN 5 PM 8 PM CONTINUING
PRECIP END 6 PM CONTINUING CONTINUING
MIXING HGT(FT-AGL/MSL)3070 2320
TRANSPORT WND (KTS) W 6 SW 11
VENT RATE (KT-FT) 22760 35910
DISPERSION MARGINAL FAIR
CWR 10
KBDI <200 <200 <200
REMARKS...NONE.
MEZ113-182015-
BANGOR REGION-
241 AM EDT MON MAY 18 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE NONE NONE TSTMS
CHANCE PRECIP (%) 0 0 50
CHANCE OF THUNDER (%) 7 8 24(LTD)
TEMP (24H TREND) 66 (-11) 48 (0) 86
RH % (24H TREND) 28 (-4) 88 (+26) 45
20FTWND-VAL/AM(MPH) LGT/VAR LGT/VAR
20FTWND-RDG/PM(MPH) S 5 S 5 SW 7 G17
PRECIP AMOUNT 0.00 0.00 0.03
PRECIP DURATION 1
PRECIP BEGIN 12 PM
PRECIP END CONTINUING
MIXING HGT(FT-AGL/MSL)3440 4270
TRANSPORT WND (KTS) SW 10 W 16
VENT RATE (KT-FT) 37590 91390
DISPERSION FAIR VERY GOOD
CWR 0 0 20
KBDI <200 <200 <200
REMARKS...NONE.
MEZ114-182015-
EASTERN PENOBSCOT BAY COAST-
241 AM EDT MON MAY 18 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE NONE NONE TSTMS
CHANCE PRECIP (%) 0 0 50
CHANCE OF THUNDER (%) 5 9 19(LTD)
TEMP (24H TREND) 66 (-13) 47 (-3) 81
RH % (24H TREND) 27 (-6) 97 (+33) 49
20FTWND-VAL/AM(MPH) LGT/VAR LGT/VAR
20FTWND-RDG/PM(MPH) S 5 LGT/VAR SW 7 G20
PRECIP AMOUNT 0.00 0.00 0.01
PRECIP DURATION 1
PRECIP BEGIN 12 PM
PRECIP END CONTINUING
MIXING HGT(FT-AGL/MSL)3020 2330
TRANSPORT WND (KTS) SW 6 SW 12
VENT RATE (KT-FT) 18690 39950
DISPERSION POOR FAIR
CWR 0 0 10
KBDI <200 <200 <200
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
TUESDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 60S. SOUTHWEST WINDS AROUND 10 MPH.
WEDNESDAY
MOSTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS AROUND
80. WEST WINDS AROUND 15 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. COLDER. LOWS IN THE LOWER 40S.
NORTHWEST WINDS AROUND 15 MPH.
THURSDAY
SUNNY. MUCH COOLER. HIGHS IN THE MID 50S. NORTHWEST
WINDS AROUND 15 MPH.
THURSDAY NIGHT
CLEAR. LOWS IN THE UPPER 30S. NORTHWEST WINDS
AROUND 10 MPH.
FRIDAY
SUNNY. HIGHS IN THE LOWER 60S. NORTHWEST WINDS AROUND
10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 40. WEST WINDS AROUND
5 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 60S. SOUTH WINDS
AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 40S. SOUTHEAST
WINDS AROUND 5 MPH.
SUNDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. SOUTHEAST WINDS
AROUND 5 MPH.
OUTLOOK 8 TO 14 DAYS
TEMPERATURES ABOVE NORMAL. PRECIPITATION NEAR NORMAL.
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