145
FNUS51 KCAR 181843
FWFCAR
FIRE WEATHER PLANNING FORECAST FOR NORTHERN AND EASTERN MAINE
NATIONAL WEATHER SERVICE CARIBOU ME
243 PM EDT TUE AUG 18 2026
DISCUSSION
TODAY WILL FEATURE SIGNIFICANT CLOUD COVER, LIGHT AND VARIABLE
WINDS AND ELEVATED RHS IN THE 60-80% RANGE. ISOLATED TO SCATTERED
SHOWERS EXPECTED TODAY MOSTLY OVER THE CENTRAL HIGHLANDS AND
ALONG
THE MAINE/NEW BRUNSWICK BORDER IN EASTERN ZONES. A FEW
THUNDERSTORMS ARE POSSIBLE MAINLY IN THE CENTRAL HIGHLANDS. NEAR
100% RH TUESDAY NIGHT WITH FOG EXPECTED. WEDNESDAY, EXPECTING
MINIMUM RHS TO DIP DOWN INTO THE 50-60% RANGE WITH SW WINDS
5-10MPH AND TEMPERATURES IN THE UPPER 70S TO LOW 80S. ISOLATED TO
SCATTERED SHOWERS AND A FEW THUNDERSTORMS EXPECTED FROM THE
CENTRAL HIGHLANDS NORTHWARD.
MEZ101-190800-
QUEBEC-MAINE BORDERLANDS-
243 PM EDT TUE AUG 18 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY MCLDY PCLDY PCLDY
PRECIP TYPE NONE TSTMS TSTMS NONE
CHANCE PRECIP (%) 0 40 40 0
CHANCE OF THUNDER (%) 4 17(LTD) 15(LTD) 6
TEMP (24H TREND) 52 (-2) 75 (-1) 53 73
RH % (24H TREND) 100 (+1) 52 (0) 100 42
20FTWND-VAL/AM(MPH) LGT/VAR LGT/VAR
20FTWND-RDG/PM(MPH) LGT/VAR SW 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.02 0.02 0.00
PRECIP DURATION 2 1
PRECIP BEGIN 2 PM CONTINUING
PRECIP END CONTINUING 1 AM
MIXING HGT(FT-AGL/MSL) 4990 5920
TRANSPORT WND (KTS) SW 11 W 11
VENT RATE (KT-FT) 62690 78860
DISPERSION GOOD GOOD
CWR 0 10 10 0
KBDI <200 <200 <200 <200
REMARKS...NONE.
MEZ102-190800-
NORTH WOODS AND ST. JOHN VALLEY-
243 PM EDT TUE AUG 18 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS TSTMS NONE
CHANCE PRECIP (%) 10 20 20 0
CHANCE OF THUNDER (%) 10 17(LTD) 17(LTD) 6
TEMP (24H TREND) 52 (-5) 77 (+1) 53 75
RH % (24H TREND) 100 (+2) 50 (-7) 100 45
20FTWND-VAL/AM(MPH) LGT/VAR LGT/VAR
20FTWND-RDG/PM(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION 0 0 1
PRECIP BEGIN 6 PM 2 PM CONTINUING
PRECIP END 7 PM CONTINUING 12 AM
MIXING HGT(FT-AGL/MSL) 5260 5950
TRANSPORT WND (KTS) SW 10 W 10
VENT RATE (KT-FT) 65870 76820
DISPERSION GOOD GOOD
CWR 0
KBDI <200 <200 <200 <200
REMARKS...NONE.
MEZ103-190800-
EASTERN AROOSTOOK-
243 PM EDT TUE AUG 18 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS TSTMS NONE
CHANCE PRECIP (%) 20 20 20 0
CHANCE OF THUNDER (%) 12 11 18(LTD) 9
TEMP (24H TREND) 55 (-6) 78 (+2) 55 76
RH % (24H TREND) 100 (+3) 52 (-13) 100 47
20FTWND-VAL/AM(MPH) LGT/VAR LGT/VAR
20FTWND-RDG/PM(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION 0 0 1
PRECIP BEGIN 6 PM 3 PM CONTINUING
PRECIP END 8 PM CONTINUING 11 PM
MIXING HGT(FT-AGL/MSL) 5000 6020
TRANSPORT WND (KTS) SW 9 W 9
VENT RATE (KT-FT) 51760 66800
DISPERSION GOOD GOOD
CWR 0
KBDI 201-300 201-300 201-300 201-300
REMARKS...NONE.
MEZ105-190800-
CENTRAL HIGHLANDS-
243 PM EDT TUE AUG 18 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS NONE
CHANCE PRECIP (%) 20 20 20 0
CHANCE OF THUNDER (%) 12 13 14 5
TEMP (24H TREND) 56 (-5) 79 (+5) 55 77
RH % (24H TREND) 100 (0) 49 (-19) 100 43
20FTWND-VAL/AM(MPH) LGT/VAR LGT/VAR
20FTWND-RDG/PM(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION 0 0 0
PRECIP BEGIN 6 PM 4 PM CONTINUING
PRECIP END 8 PM CONTINUING 10 PM
MIXING HGT(FT-AGL/MSL) 5360 6200
TRANSPORT WND (KTS) SW 10 W 9
VENT RATE (KT-FT) 67800 67720
DISPERSION GOOD GOOD
CWR 0
KBDI 201-300 201-300 201-300 201-300
REMARKS...NONE.
MEZ106-190800-
CENTRAL MAINE NORTH OF BANGOR-
243 PM EDT TUE AUG 18 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 20 20 10
CHANCE OF THUNDER (%) 12 12 13 9
TEMP (24H TREND) 57 (-5) 80 (+3) 57 79
RH % (24H TREND) 100 (+1) 51 (-18) 100 46
20FTWND-VAL/AM(MPH) LGT/VAR LGT/VAR
20FTWND-RDG/PM(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION 0 0 0 0
PRECIP BEGIN 6 PM 2 PM CONTINUING 5 PM
PRECIP END 7 PM CONTINUING 10 PM 6 PM
MIXING HGT(FT-AGL/MSL) 5230 6220
TRANSPORT WND (KTS) SW 10 W 9
VENT RATE (KT-FT) 59830 67460
DISPERSION GOOD GOOD
CWR
KBDI 301-400 301-400 301-400 301-400
REMARKS...NONE.
MEZ108-190800-
INTERIOR DOWNEAST-
243 PM EDT TUE AUG 18 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 10 20
CHANCE OF THUNDER (%) 11 11 9 8
TEMP (24H TREND) 59 (-2) 80 (+3) 60 81
RH % (24H TREND) 100 (0) 57 (-13) 100 56
20FTWND-VAL/AM(MPH) LGT/VAR LGT/VAR
20FTWND-RDG/PM(MPH) LGT/VAR SW 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION 0 0 0 0
PRECIP BEGIN 6 PM 2 PM CONTINUING 2 PM
PRECIP END 7 PM CONTINUING 7 PM CONTINUING
MIXING HGT(FT-AGL/MSL) 4460 5570
TRANSPORT WND (KTS) SW 9 W 9
VENT RATE (KT-FT) 46750 64970
DISPERSION FAIR GOOD
CWR
KBDI 301-400 301-400 301-400 301-400
REMARKS...NONE.
MEZ112-190800-
COASTAL DOWNEAST-
243 PM EDT TUE AUG 18 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY MCLDY PCLDY
PRECIP TYPE SHOWERS NONE NONE NONE
CHANCE PRECIP (%) 10 0 0 0
CHANCE OF THUNDER (%) 10 8 4 7
TEMP (24H TREND) 57 (-3) 81 (+7) 58 81
RH % (24H TREND) 100 (0) 59 (-16) 100 59
20FTWND-VAL/AM(MPH) LGT/VAR LGT/VAR
20FTWND-RDG/PM(MPH) LGT/VAR SW 6 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION 0
PRECIP BEGIN 6 PM
PRECIP END 7 PM
MIXING HGT(FT-AGL/MSL) 2980 3660
TRANSPORT WND (KTS) SW 8 SW 7
VENT RATE (KT-FT) 36000 35730
DISPERSION FAIR FAIR
CWR 0 0 0
KBDI 301-400 301-400 301-400 301-400
REMARKS...NONE.
MEZ113-190800-
BANGOR REGION-
243 PM EDT TUE AUG 18 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS NONE
CHANCE PRECIP (%) 10 20 10 0
CHANCE OF THUNDER (%) 12 14 11 5
TEMP (24H TREND) 58 (-5) 81 (+4) 58 80
RH % (24H TREND) 100 (+2) 55 (-15) 100 49
20FTWND-VAL/AM(MPH) LGT/VAR LGT/VAR
20FTWND-RDG/PM(MPH) LGT/VAR SW 5 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION 0 0 0
PRECIP BEGIN 6 PM 2 PM CONTINUING
PRECIP END 7 PM CONTINUING 7 PM
MIXING HGT(FT-AGL/MSL) 4750 6500
TRANSPORT WND (KTS) SW 10 W 9
VENT RATE (KT-FT) 52930 67560
DISPERSION GOOD GOOD
CWR 0
KBDI 401-500 401-500 401-500 401-500
REMARKS...NONE.
MEZ114-190800-
EASTERN PENOBSCOT BAY COAST-
243 PM EDT TUE AUG 18 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY MCLDY PCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0 0
CHANCE OF THUNDER (%) 9 11 8 4
TEMP (24H TREND) 59 (-3) 81 (+5) 61 84
RH % (24H TREND) 100 (+1) 57 (-15) 100 52
20FTWND-VAL/AM(MPH) LGT/VAR LGT/VAR
20FTWND-RDG/PM(MPH) LGT/VAR SW 7 LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(FT-AGL/MSL) 3380 4740
TRANSPORT WND (KTS) SW 10 SW 8
VENT RATE (KT-FT) 42200 45650
DISPERSION FAIR FAIR
CWR 0 0 0 0
KBDI 401-500 401-500 401-500 401-500
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHWEST
WINDS AROUND 5 MPH.
FRIDAY
SUNNY. HIGHS IN THE MID 70S. NORTHWEST WINDS AROUND
5 MPH.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 50. WEST WINDS AROUND
5 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. SOUTHEAST WINDS
AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. SOUTHEAST
WINDS AROUND 5 MPH.
SUNDAY
PARTLY SUNNY WITH SHOWERS LIKELY. HIGHS IN THE LOWER
70S. EAST WINDS AROUND 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY. LOWS IN THE
UPPER 50S. SOUTHEAST WINDS AROUND 5 MPH.
MONDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS IN THE LOWER
70S. SOUTHWEST WINDS AROUND 10 MPH.
MONDAY NIGHT
PARTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 50S. WEST WINDS AROUND 10 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. WEST WINDS
AROUND 10 MPH.
OUTLOOK 8 TO 14 DAYS
TEMPERATURES NEAR NORMAL. PRECIPITATION ABOVE NORMAL.
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