135
FNUS51 KGYX 172101
FWFGYX
FIRE WEATHER PLANNING FORECAST FOR WESTERN MAINE AND NEW HAMPSHIRE
NATIONAL WEATHER SERVICE GRAY ME
500 PM EDT WED SEP 17 2025
DISCUSSION
HIGH PRESSURE WILL MAINTAIN CONTROL OVER THE WEATHER LOCALLY
THROUGH AT LEAST THURSDAY. EXPECT STRONG RELATIVE HUMIDITY
RECOVERY OVERNIGHT AND WARM TEMPERATURES WITH MINIMUM RELATIVE
HUMIDITY AROUND 40 TO 50 PERCENT DURING THE DAY. A STRONG COLD
FRONT WILL CROSS THE REGION THURSDAY NIGHT AND BRING COOLER
TEMPERATURES ALONG WITH BREEZY NORTH WINDS. BREEZY WINDS AND RH
VALUES DROPPING TO 35 TO 40 PERCENT WILL INTRODUCE ELEVATED FIRE
WEATHER CONCERNS FRIDAY. SATURDAY WILL BE LESS BREEZY, BUT RH
VALUES MAY DROP TO 25 TO 30 PERCENT ACROSS MUCH OF THE AREA
CONTINUING FIRE WEATHER CONCERNS. THERE IS LITTLE CHANCE OF
WETTING RAINS THROUGH AT LEAST EARLY NEXT WEEK.
MEZ104-180800-
WESTERN MAINE MOUNTAINS AND FOOTHILLS-
INCLUDING THE CITIES OF FARMINGTON, RUMFORD, BETHEL, EUSTIS,
JACKMAN, AND CARRABASSETT VALLEY
500 PM EDT WED SEP 17 2025
TONIGHT THU THU NIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE NONE NONE SHOWERS NONE
CHANCE OF THUNDER (%) 0(NONE) 0(NONE) 2 1
CHANCE PRECIP (%) 0 0 20 0
TEMP (24H TREND) 45 (-2) 78 (+4) 45 67
RH % (24H TREND) 97 (-1) 41 (-2) 95 35
20FTWND - AM(MPH) SW 5 NW 12 G28
20FTWND - PM(MPH) S 5 W 8 G19 W 6 G17 NW 13 G28
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 8 PM
PRECIP END 6 AM
MIXING HGT(FT-AGL) 5600(UNST) 4990(UNST)
TRANSPORT WND (MPH) W 14 NW 18
VENT RATE (KT-FT) 67200 79840
CWR 0 0 0
KBDI 401-500 401-500 401-500 N/A
REMARKS...NONE.
MEZ107-180800-
KENNEBEC RIVER VALLEY-
INCLUDING THE CITIES OF AUGUSTA, WATERVILLE, SKOWHEGAN, AUBURN,
LEWISTON, LIBERTY, AND LIVERMORE
500 PM EDT WED SEP 17 2025
TONIGHT THU THU NIGHT FRI
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE OF THUNDER (%) 1 2 1 1
CHANCE PRECIP (%) 0 0 0 0
TEMP (24H TREND) 49 (+1) 79 (+4) 52 71
RH % (24H TREND) 100 (+2) 51 (+2) 100 38
20FTWND - AM(MPH) LGT/VAR NW 11 G25
20FTWND - PM(MPH) S 5 SW 5 SW 5 NW 11 G25
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(FT-AGL) 4410(UNST) 5660(UNST)
TRANSPORT WND (MPH) SW 10 NW 17
VENT RATE (KT-FT) 39690 84900
CWR 0 0 0 0
KBDI 401-500 401-500 401-500 N/A
REMARKS...NONE.
MEZ109-180800-
LAKES REGION-
INCLUDING THE CITIES OF SANFORD, NORTH WINDHAM, GRAY,
NEW GLOUCESER, FRYEBURG, SOUTH PARIS, AND HIRAM
500 PM EDT WED SEP 17 2025
TONIGHT THU THU NIGHT FRI
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS NONE NONE NONE
CHANCE OF THUNDER (%) 7 2 1 1
CHANCE PRECIP (%) 20 0 0 0
TEMP (24H TREND) 48 (+1) 80 (+5) 51 74
RH % (24H TREND) 100 (+1) 46 (-1) 96 37
20FTWND - AM(MPH) LGT/VAR NW 10 G25
20FTWND - PM(MPH) S 5 SW 5 LGT/VAR NW 11 G25
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 1 AM
PRECIP END 6 AM
MIXING HGT(FT-AGL) 4800(UNST) 5370(UNST)
TRANSPORT WND (MPH) W 10 NW 15
VENT RATE (KT-FT) 43200 69810
CWR 0 0 0
KBDI 501-600 501-600 501-600 N/A
REMARKS...NONE.
MEZ110-180800-
BEACHES AND CASCO BAY-
INCLUDING THE CITIES OF KITTERY, YORK, KENNEBUNK, SCARBOROUGH,
PORTLAND, YARMOUTH, FREEPORT, BRUNSWICK, TOPSHAM,
BOOTHBAY HARBOR, AND DAMARISCOTTA
500 PM EDT WED SEP 17 2025
TONIGHT THU THU NIGHT FRI
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS NONE NONE
CHANCE OF THUNDER (%) 7 5 1 0(NONE)
CHANCE PRECIP (%) 30 20 0 0
TEMP (24H TREND) 51 (+3) 78 (+5) 53 75
RH % (24H TREND) 100 (+1) 61 (+3) 100 39
20FTWND - AM(MPH) LGT/VAR NW 10 G23
20FTWND - PM(MPH) S 5 S 6 SW 5 NW 11 G23
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION 1 0
PRECIP BEGIN 1 AM CONTINUING
PRECIP END CONTINUING 8 AM
MIXING HGT(FT-AGL) 2860(MRGL) 5170(UNST)
TRANSPORT WND (MPH) SW 9 NW 15
VENT RATE (KT-FT) 22880 67210
CWR 0 0
KBDI 401-500 401-500 401-500 N/A
REMARKS...NONE.
MEZ111-180800-
MID-COAST-
INCLUDING THE CITIES OF WALDOBORO, ROCKLAND, CAMDEN,
LINCOLNVILLE, BELFAST, SEARSPORT, ISLESBORO, AND VINALHAVEN
500 PM EDT WED SEP 17 2025
TONIGHT THU THU NIGHT FRI
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE NONE SHOWERS NONE NONE
CHANCE OF THUNDER (%) 3 4 1 0(NONE)
CHANCE PRECIP (%) 0 20 0 0
TEMP (24H TREND) 50 (+2) 76 (+3) 54 72
RH % (24H TREND) 100 (+1) 63 (+4) 100 40
20FTWND - AM(MPH) LGT/VAR NW 10 G23
20FTWND - PM(MPH) S 5 S 5 SW 5 NW 10 G23
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END 11 AM
MIXING HGT(FT-AGL) 2890(MRGL) 5830(UNST)
TRANSPORT WND (MPH) SW 9 NW 17
VENT RATE (KT-FT) 23120 87450
CWR 0 0 0
KBDI 401-500 401-500 401-500 N/A
REMARKS...NONE.
NHZ021-180800-
COOS COUNTY-
INCLUDING THE CITIES OF ERROL, MILLSFIELD, COLEBROOK, BERLIN,
DUMMER, MILAN, YORK POND, AND LANCASTER
500 PM EDT WED SEP 17 2025
TONIGHT THU THU NIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE NONE NONE SHOWERS NONE
CHANCE OF THUNDER (%) 0(NONE) 1 4 3
CHANCE PRECIP (%) 0 0 20 0
TEMP (24H TREND) 43 (-4) 77 (+5) 43 64
RH % (24H TREND) 91 (-7) 41 (-1) 98 38
20FTWND - AM(MPH) LGT/VAR NW 12 G33
20FTWND - PM(MPH) LGT/VAR W 6 G17 W 6 G19 NW 13 G31
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 8 PM
PRECIP END 6 AM
MIXING HGT(FT-AGL) 5470(UNST) 4820(UNST)
TRANSPORT WND (MPH) W 15 NW 17
VENT RATE (KT-FT) 71110 72300
CWR 0 0 0
KBDI 401-500 401-500 401-500 N/A
REMARKS...NONE.
NHZ022-180800-
WHITE MOUNTIANS-
INCLUDING THE CITIES OF LINCOLN, LITTLETON, THORNTON,
WATERVILLE VALLEY, WOODSTOCK, JACKSON, NORTH CONWAY, CONWAY,
AND CRAWFORD NOTCH
500 PM EDT WED SEP 17 2025
TONIGHT THU THU NIGHT FRI
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE OF THUNDER (%) 3 0(NONE) 5 4
CHANCE PRECIP (%) 0 0 0 0
TEMP (24H TREND) 47 (-1) 79 (+7) 47 68
RH % (24H TREND) 95 (-2) 39 (-2) 96 36
20FTWND - AM(MPH) LGT/VAR NW 10 G28
20FTWND - PM(MPH) LGT/VAR LGT/VAR NW 5 G17 NW 10 G27
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION
PRECIP BEGIN
PRECIP END
MIXING HGT(FT-AGL) 5620(UNST) 5150(UNST)
TRANSPORT WND (MPH) W 10 NW 16
VENT RATE (KT-FT) 50580 72100
CWR 0 0 0 0
KBDI 501-600 501-600 501-600 N/A
REMARKS...NONE.
NHZ023-180800-
CENTRAL LAKES-
INCLUDING THE CITIES OF LEBANON, PLYMOUTH, LACONIA, WOLFEBORO,
ALTON, AND OSSIPEE
500 PM EDT WED SEP 17 2025
TONIGHT THU THU NIGHT FRI
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS NONE NONE NONE
CHANCE OF THUNDER (%) 8 3 2 2
CHANCE PRECIP (%) 20 0 0 0
TEMP (24H TREND) 49 (+2) 80 (+6) 53 72
RH % (24H TREND) 100 (+3) 40 (-4) 93 36
20FTWND - AM(MPH) LGT/VAR NW 11 G23
20FTWND - PM(MPH) LGT/VAR LGT/VAR LGT/VAR NW 11 G23
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 1 AM
PRECIP END 6 AM
MIXING HGT(FT-AGL) 5600(UNST) 5230(UNST)
TRANSPORT WND (MPH) W 12 NW 16
VENT RATE (KT-FT) 56000 73220
CWR 0 0 0
KBDI 501-600 501-600 501-600 N/A
REMARKS...NONE.
NHZ024-180800-
LAKE SUNAPEE AND MONADNOCKS-
INCLUDING THE CITIES OF CLAREMONT, KEENE, AND JAFFREY
500 PM EDT WED SEP 17 2025
TONIGHT THU THU NIGHT FRI
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE NONE
CHANCE OF THUNDER (%) 13 7 2 0(NONE)
CHANCE PRECIP (%) 30 0 0 0
TEMP (24H TREND) 50 (+5) 80 (+7) 51 73
RH % (24H TREND) 100 (+2) 42 (-5) 96 38
20FTWND - AM(MPH) LGT/VAR NW 9 G21
20FTWND - PM(MPH) LGT/VAR LGT/VAR LGT/VAR NW 10 G21
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION 1
PRECIP BEGIN 1 AM
PRECIP END 6 AM
MIXING HGT(FT-AGL) 5480(UNST) 5100(UNST)
TRANSPORT WND (MPH) W 10 N 16
VENT RATE (KT-FT) 49320 71400
CWR 0 0 0
KBDI 501-600 501-600 501-600 N/A
REMARKS...NONE.
NHZ025-180800-
MERRIMACK VALLEY-
INCLUDING THE CITIES OF MANCHESTER, NASHUA, WEARE, AND DERRY
500 PM EDT WED SEP 17 2025
TONIGHT THU THU NIGHT FRI
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS NONE NONE NONE
CHANCE OF THUNDER (%) 17(LTD) 11 2 0(NONE)
CHANCE PRECIP (%) 30 0 0 0
TEMP (24H TREND) 51 (+4) 81 (+7) 55 75
RH % (24H TREND) 100 (+3) 50 (-1) 91 39
20FTWND - AM(MPH) LGT/VAR NW 10 G23
20FTWND - PM(MPH) LGT/VAR LGT/VAR LGT/VAR NW 10 G23
PRECIP AMOUNT 0.00 0.00 0.00 0.00
PRECIP DURATION 2
PRECIP BEGIN 12 AM
PRECIP END 6 AM
MIXING HGT(FT-AGL) 5140(UNST) 5360(UNST)
TRANSPORT WND (MPH) W 8 NW 16
VENT RATE (KT-FT) 35980 75040
CWR 0 0 0
KBDI 401-500 401-500 401-500 N/A
REMARKS...NONE.
NHZ026-180800-
SEACOAST-
INCLUDING THE CITIES OF PORTSMOUTH, DOVER, HAMPTON, AND EXETER
500 PM EDT WED SEP 17 2025
TONIGHT THU THU NIGHT FRI
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS SHOWERS NONE NONE
CHANCE OF THUNDER (%) 18(LTD) 13 2 0(NONE)
CHANCE PRECIP (%) 40 20 0 0
TEMP (24H TREND) 52 (+4) 79 (+6) 56 76
RH % (24H TREND) 100 (+3) 55 (-2) 92 38
20FTWND - AM(MPH) LGT/VAR NW 8 G19
20FTWND - PM(MPH) LGT/VAR LGT/VAR LGT/VAR NW 8 G19
PRECIP AMOUNT 0.01 0.00 0.00 0.00
PRECIP DURATION 2 0
PRECIP BEGIN 12 AM CONTINUING
PRECIP END CONTINUING 8 AM
MIXING HGT(FT-AGL) 4260(UNST) 5070(UNST)
TRANSPORT WND (MPH) SW 8 NW 13
VENT RATE (KT-FT) 29820 55770
CWR 0 0
KBDI 401-500 401-500 401-500 N/A
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
CLEAR. LOWS IN THE UPPER 30S. NORTHWEST WINDS
5 TO 10 MPH.
SATURDAY
SUNNY. HIGHS IN THE MID 60S. NORTHWEST WINDS AROUND
5 MPH. DAYTIME HUMIDITY VALUES MODERATE.
SATURDAY NIGHT
CLEAR. LOWS IN THE MID 30S. NORTHWEST WINDS
AROUND 5 MPH.
SUNDAY
SUNNY. HIGHS IN THE UPPER 60S. SOUTH WINDS 5 TO 10 MPH.
DAYTIME HUMIDITY VALUES MODERATE.
SUNDAY NIGHT
MOSTLY CLEAR. NOT AS COOL. LOWS IN THE UPPER 40S.
SOUTH WINDS 5 TO 10 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. SOUTHWEST WINDS
5 TO 10 MPH. DAYTIME HUMIDITY VALUES MODERATE.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. SOUTHWEST
WINDS AROUND 5 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS AROUND 80. SOUTHWEST WINDS AROUND
5 MPH. DAYTIME HUMIDITY VALUES MODERATE.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. SOUTHWEST
WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. WEST WINDS
5 TO 10 MPH. DAYTIME HUMIDITY VALUES MODERATE.
OUTLOOK 8 TO 14 DAYS
TEMPERATURES ABOVE NORMAL. PRECIPITATION BELOW NORMAL.
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