TCMEP3
POST-TROPICAL CYCLONE MARIO FORECAST/ADVISORY NUMBER 18
NWS NATIONAL HURRICANE CENTER MIAMI FL EP132025
0300 UTC WED SEP 17 2025
POST-TROPICAL CYCLONE CENTER LOCATED NEAR 23.7N 118.3W AT 17/0300Z
POSITION ACCURATE WITHIN 20 NM
PRESENT MOVEMENT TOWARD THE NORTHWEST OR 310 DEGREES AT 9 KT
ESTIMATED MINIMUM CENTRAL PRESSURE 1006 MB
MAX SUSTAINED WINDS 25 KT WITH GUSTS TO 35 KT.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.
REPEAT...CENTER LOCATED NEAR 23.7N 118.3W AT 17/0300Z
AT 17/0000Z CENTER WAS LOCATED NEAR 23.3N 118.0W
FORECAST VALID 17/1200Z 24.7N 119.2W...POST-TROP/REMNT LOW
MAX WIND 20 KT...GUSTS 30 KT.
FORECAST VALID 18/0000Z 25.6N 119.8W...POST-TROP/REMNT LOW
MAX WIND 20 KT...GUSTS 30 KT.
FORECAST VALID 18/1200Z 26.3N 120.2W...POST-TROP/REMNT LOW
MAX WIND 15 KT...GUSTS 20 KT.
FORECAST VALID 19/0000Z...DISSIPATED
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 23.7N 118.3W
THIS IS THE LAST FORECAST/ADVISORY ISSUED BY THE
NATIONAL HURRICANE CENTER ON THIS SYSTEM
$$
FORECASTER HAGEN=
HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0545 UTC WED SEP 17 2025
CCODE/1:31:12:01:00/AOW+POR/NWS/CCODE
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS
SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE
HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE
MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE
NATIONAL WEATHER SERVICE. EMAIL US AT
VOSOPS@NOAA.GOV(LOWERCASE).
FOR ANY TROPICAL CYCLONE INFORMATION BEYOND 48 HOURS REFERENCE
THE ASSOCIATED NWS TROPICAL CYCLONE FORECAST/ADVISORY (TCM).
SECURITE
PACIFIC N OF 30N AND S OF 67N E OF A LINE FROM BERING STRAIT
TO 50N 160E
ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS
SYNOPSIS VALID 0000 UTC SEP 17.
24 HOUR FORECAST VALID 0000 UTC SEP 18.
48 HOUR FORECAST VALID 0000 UTC SEP 19.
.WARNINGS.
...STORM WARNING...
.COMPLEX LOW WITH MAIN CENTER 51N136W 987 MB MOVING N 20 KT
TURNING NW AFTER 12 HOURS. WITHIN 180 NM N SEMICIRCLE AND 120 NM
S SEMICIRCLE WINDS 40 TO 55 KT. SEAS 4.5 TO 7 M. ALSO FROM 44N TO
59N BETWEEN 129W AND 148W WINDS 25 TO 40 KT. SEAS 2.5 TO 5 M.
ELSEWHERE N OF 39N BETWEEN 128W AND 155W WINDS TO 25 KT. SEAS TO
3 M.
.06 HOUR FORECAST COMBINED LOW 54N137W 982 MB. WITHIN 120 NM E
AND SW SEMICIRCLES WINDS 45 TO 60 KT. SEAS 5 TO 8 M.
.24 HOUR FORECAST LOW 59N140W 996 MB. WITHIN 180 NM SE AND S
QUADRANTS WINDS 25 TO 35 KT. SEAS 3 TO 6.5 M. ELSEWHERE N OF 44N
BETWEEN 134W AND 150W WINDS TO 25 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST LOW DISSIPATED INLAND AND CONDITIONS DESCRIBED
WITH LOW 57N147W BELOW.
...GALE WARNING...
.LOW 53N163W 997 MB MOVING E 25 KT. WITHIN 360 NM E OF A FRONT
FROM LOW CENTER TO 51N160W TO 47N160W TO 44N170W WINDS 25 TO 35
KT. SEAS 2.5 TO 4 M. ELSEWHERE S OF THE ALEUTIAN ISLANDS N OF 34N
BETWEEN 153W AND 180W WINDS TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW 54N147W 1005 MB. CONDITIONS DESCRIBED WITH
STORM WARNING ABOVE.
.48 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 57N147W
BELOW.
...GALE WARNING...
.LOW 55N174E 978 MB MOVING SE 10 KT. WITHIN 240 NM N AND 300 NM
NE QUADRANTS WINDS 30 TO 45 KT. SEAS 4.5 TO 8 M. ELSEWHERE N AND
W OF A LINE FROM 40N160E TO 40N170E TO 55N167W TO 61N176W WINDS
20 TO 30 KT. SEAS 2.5 TO 5 M.
.24 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER 52N175E 986 MB
AND NEW SECOND CENTER NEAR 48N166E 997 MB. BETWEEN 120 NM AND 300
NM N AND NW QUADRANTS OF FIRST CENTER...WITHIN 420 NM SE AND 300
NM S QUADRANTS OF FIRST CENTER...AND WITHIN 360 NM S AND 480 NM
SW QUADRANTS OF SECOND CENTER WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5
M.
.48 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER NEAR 56N172W 990
MB AND SECOND CENTER NEAR 49N168W 997 MB. WITHIN 300 NM S
QUADRANT OF SECOND CENTER WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M.
ALSO WITHIN 420 NM E AND S QUADRANTS OF SECOND CENTER...AND
WITHIN 360 NM NW SEMICIRCLE OF FIRST CENTER WINDS 20 TO 30 KT.
SEAS 2.5 TO 3.5 M. ELSEWHERE N OF 43N W OF 176W WINDS TO 25 KT.
SEAS TO 2.5 M.
...GALE WARNING...
.LOW 42N176E 1005 MB MOVING NE 40 KT. FROM 33N TO 43N BETWEEN
170W AND 170E WINDS 20 TO 30 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 50N161W 998 MB. WITHIN 360 NM SE OF A FRONT
FROM LOW CENTER TO 49N158W TO 41N168W WINDS 25 TO 35 KT. SEAS 2.5
TO 5 M. ELSEWHERE FROM 37N TO 50N BETWEEN 150W AND 170W WINDS TO
25 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW 57N147W 996 MB. N OF 50N BETWEEN 135W AND
155W...AND WITHIN 300 NM SE OF A FRONT FROM 50N145W TO 40N168W
WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M...HIGHEST NEAR 48N147W.
...GALE WARNING...
.27 HOUR FORECAST WITHIN 240 NM SE OF A LINE FROM 46N126W TO
33N140W AREA OF N TO NE WINDS 25 TO 35 KT. SEAS TO 3 M.
.48 HOUR FORECAST FROM 36N TO 44N BETWEEN 123W AND 127W AREA OF N
WINDS 25 TO 35 KT. SEAS 2.5 TO 5 M. ELSEWHERE WITHIN 300 NM SE OF
A LINE FROM 45N128W TO 40N132W TO 30N146W AREA OF N TO NE WINDS
TO 25 KT. SEAS 2.5 TO 3.5 M.
.SYNOPSIS AND FORECAST.
.LOW 31N167W 1018 MB MOVING W 10 KT. S OF 33N BETWEEN 146W AND
171W WINDS TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW 31N169W 1019 MB. WITHIN 120 NM OF LOW
CENTER WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.
.48 HOUR FORECAST NEW LOW NEAR 42N163E 1006 MB. FROM 37N TO 43N W
OF 174E WINDS 20 TO 30 KT. SEAS TO 3 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 300 NM SE OF
A LINE FROM 51N161W TO 42N180W.
.24 HOUR FORECAST DENSE FOG WITHIN 300 NM SE OF A LINE FROM
52N160W TO 44N169W.
.48 HOUR FORECAST DENSE FOG WITHIN 240 NM SE OF A LINE FROM
52N143W TO 44N161W.
.FORECASTER ANDERSON. OCEAN PREDICTION CENTER.
NWS NATIONAL HURRICANE CENTER MIAMI FL
E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE
EQUATOR E OF 120W
SYNOPSIS VALID 0000 UTC WED SEP 17.
24 HOUR FORECAST VALID 0000 UTC THU SEP 18.
48 HOUR FORECAST VALID 0000 UTC FRI SEP 19.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.POST-TROPICAL CYCLONE MARIO NEAR 23.7N 118.3W 1006 MB AT 0300
UTC SEP 17 MOVING NW OR 310 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS
25 KT GUSTS 35 KT. WITHIN 24.5N118W TO 25N118W TO 25N119W TO
24.5N119W TO 24N118.5W TO 24.5N118W WINDS 20 TO 25 KT. SEAS 2.5
TO 3.0 M. ELSEWHERE WITHIN 25N117W TO 25N118W TO 25N119W TO
24N119W TO 23N118W TO 24N117W TO 25N117W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN MIXED SWELL.
.12 HOUR FORECAST POST-TROPICAL REMNANT LOW MARIO NEAR 24.7N
119.2W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
.24 HOUR FORECAST POST-TROPICAL REMNANT LOW MARIO NEAR 25.6N
119.8W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT. CONDITIONS
IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.36 HOUR FORECAST POST-TROPICAL REMNANT LOW MARIO NEAR 26.3N
120.2W. MAXIMUM SUSTAINED WINDS 15 KT GUSTS 20 KT.
.48 HOUR FORECAST...DISSIPATED.
.LOW PRES NEAR 12.5N103.5W 1007 MB. WITHIN 13N101W TO 14N102W TO
12N104W TO 09N103W TO 09N102W TO 10N100W TO 13N101W WINDS 20 TO
30 KT. SEAS 2.5 TO 3.5 M. ELSEWHERE WITHIN 14N102W TO 12N104W TO
13N113W TO 10N121W TO 06N110W TO 06N91W TO 14N102W WINDS 20 KT
OR LESS. SEAS 2.5 TO 3.0 M IN S TO SW SWELL.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
14N107W 1007 MB. WITHIN 12N103W TO 14N104W TO 14N107W TO 13N109W
TO 11N109W TO 10N107W TO 12N103W WINDS 20 TO 30 KT. SEAS 2.5 TO
3.0 M. ELSEWHERE WITHIN 12N102W TO 16N105W TO 13N106W TO 11N111W
TO 09N110W TO 09N104W TO 12N102W WINDS 20 KT OR LESS. SEAS 2.5
TO 3.0 M IN S TO SW SWELL.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
15.5N110.5W 1006 MB. WITHIN 16N109W TO 16N113W TO 14N113W TO
14N112W TO 13N108W TO 14N107W TO 16N109W WINDS 20 TO 30 KT. SEAS
2.5 TO 3.0 M. ELSEWHERE WITHIN 15N105W TO 16N107W TO 13N110W TO
11N109W TO 10N107W TO 11N105W TO 15N105W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN SW SWELL.
.WITHIN 16N94W TO 16N95W TO 16N96W TO 15N96W TO 14N95W TO 15N94W
TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO N E WINDS
20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 16N96W TO 15N96W TO
14N95W TO 15N94W TO 16N94W...INCLUDING THE GULF OF
TEHUANTEPEC... N TO NE WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.42 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.WITHIN 03N78W TO 06N79W TO 06N85W TO 02N87W TO 03.4S86W TO
02S81W TO 03N78W...INCLUDING THE GULF OF PANAMA AND THE GULF OF
GUAYAQUIL... WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S TO SW
SWELL.
.24 HOUR FORECAST WITHIN 07N78W TO 08N84W TO 06N87W TO 01N86W TO
02N80W TO 07N78W...INCLUDING THE GULF OF PANAMA AND NEAR THE
AZUERO PENINSULA... WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S
TO SW SWELL.
.36 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
2.5 TO 3.0 M IN S TO SW SWELL.
.WITHIN 12N125W TO 13N126W TO 12N127W TO 11N127W TO 11N125W TO
12N125W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN W SWELL.
.18 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M IN S SWELL.
.30 HOUR FORECAST WITHIN 30N136W TO 30N140W TO 28N140W TO
29N138W TO 30N136W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW
TO N SWELL.
.48 HOUR FORECAST WITHIN 30N133W TO 30N140W TO 27N140W TO
28N137W TO 30N133W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW
TO N SWELL.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 0240 UTC WED SEP 17...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10N85W TO LOW PRES NEAR 12.5N103.5W TO
14N114W
TO 10N140W. SCATTERED MODERATE ISOLATED STRONG FROM 04N TO 10N
EAST
OF 90W...AND FROM 08N TO 16N BETWEEN 102W AND 120W.
.FORECASTER AL. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E
SYNOPSIS VALID 0000 UTC SEP 17 2025.
24 HOUR FORECAST VALID 0000 UTC SEP 18 2025.
48 HOUR FORECAST VALID 0000 UTC SEP 19 2025.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.FRONT 30N145W 29N151W 29N155W 30N161W MOVING S SLOWLY E OF 152W
AND NEARLY STATIONARY W OF 152W. ISOLATED MODERATE TSTMS WITHIN 90
NM OF FRONT W OF 152E.
.24 HOUR FORECAST WEAK FRONT 28N140W 27N147W 30N153W THENCE
TROUGH 26N161W.
.48 HOUR FORECAST FRONT DISSIPATED. TROUGH 30N164W 26N166W.
.TROUGH 28N172E 25N167E 18N164E MOVING NW SLOWLY. ISOLATED
MODERATE TSTMS WITHIN 240 NM OF TROUGH...AND FROM 27N TO 25N
BETWEEN 175E AND 178E.
.24 HOUR FORECAST TROUGH 28N166E 25N164E 20N161E.
.48 HOUR FORECAST TROUGH 30N161E 26N161E 22N160E.
.TROUGH 14N151W 08N160W MOVING W SLOWLY. ISOLATED MODERATE TSTMS
WITHIN 180 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 15N157W 10N161W 08N164W.
.48 HOUR FORECAST TROUGH 16N162W 11N163W 08N165W.
.24 HOUR FORECAST NEW TROUGH 30N169W 25N170W.
.48 HOUR FORECAST TROUGH 30N1713W 27N173W.
.WINDS 20 TO 25 KT FROM 18N TO 12N BETWEEN 158W AND 149W.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 17N TO 11N BETWEEN 161W
AND 154W.
.48 HOUR FORECAST WINDS EASED TO 20 KT OR LESS.
.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.
.SEAS 2.5 TO 3 M FROM 18N TO 11N BETWEEN 160W AND 149W.
.24 HOUR FORECAST SEAS LOWERED TO 2.5 M OR LOWER.
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.
.MONSOON TROUGH 10N140W 11N148W. ISOLATED MODERATE TSTMS WITHIN
210 NM OF MONSOON TROUGH.
.ITCZ 08N162W 07N179E 07N160E. ISOLATED MODERATE TSTMS WITHIN 240
NM OF ITCZ.
.ISOLATED MODERATE TSTMS FROM 27N TO 25N BETWEEN 175W AND 173W.
$$
.FORECASTER TROTTER. HONOLULU HI.=