TCMEP1
POST-TROPICAL CYCLONE TRUDY FORECAST/ADVISORY NUMBER 27
NWS NATIONAL HURRICANE CENTER MIAMI FL EP212026
0300 UTC TUE OCT 20 2026
POST-TROPICAL CYCLONE CENTER LOCATED NEAR 19.5N 108.0W AT 20/0300Z
POSITION ACCURATE WITHIN 20 NM
PRESENT MOVEMENT TOWARD THE NORTH OR 360 DEGREES AT 2 KT
ESTIMATED MINIMUM CENTRAL PRESSURE 1005 MB
MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 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 19.5N 108.0W AT 20/0300Z
AT 20/0000Z CENTER WAS LOCATED NEAR 19.4N 108.0W
FORECAST VALID 20/1200Z 19.3N 108.6W...POST-TROP/REMNT LOW
MAX WIND 30 KT...GUSTS 40 KT.
FORECAST VALID 21/0000Z 19.4N 109.2W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.
FORECAST VALID 21/1200Z 19.6N 109.9W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.
FORECAST VALID 22/0000Z...DISSIPATED
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 19.5N 108.0W
THIS IS THE LAST FORECAST/ADVISORY ISSUED BY THE
NATIONAL HURRICANE CENTER ON THIS SYSTEM. FOR ADDITIONAL
INFORMATION ON THE REMNANT LOW PLEASE SEE HIGH SEAS FORECASTS
ISSUED BY THE NATIONAL WEATHER SERVICE...UNDER AWIPS HEADER
NFDHSFEPI AND WMO HEADER FZPN01 KWBC.
$$
FORECASTER EVANS/PAPIN=
HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0545 UTC TUE OCT 20 2026
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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).
FROM OCTOBER 15 TO APRIL 1, DUE TO THE CLIMATOLOGY OF THE NORTH
PACIFIC AND THE FREQUENCY AND VOLUME OF WEATHER HAZARDS, ALONG
WITH CUSTOMER FEEDBACK, HIGH SEAS FORECASTS WILL BE LIMITED TO
WINDS OF 25 TO 35 KNOTS AND HIGHER, AND SEAS OF 4 METERS OR
GREATER, ALONG WITH FREEZING SPRAY, DENSE FOG, VOLCANIC ASH, AND
ANYTHING TROPICAL (INCLUDING A DEPRESSION). LESSER CONDITIONS
WILL BE INCLUDED FOR WARNING CONDITIONS AND TO PRESERVE
CONTINUITY WHERE APPROPRIATE.
1
PACIFIC S OF 67N AND N OF 30N E OF A LINE FROM THE BERING STRAIT
TO 53N172E TO 50N180W TO 30N180W
ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS
SYNOPSIS VALID 0000 UTC OCT 20.
24 HOUR FORECAST VALID 0000 UTC OCT 21.
48 HOUR FORECAST VALID 0000 UTC OCT 22.
.WARNINGS.
...STORM WARNING...
.LOW 54N155W 993 MB MOVING NE 20 KT AND INTENSIFYING. FRONT FROM
55N151W TO LOW TO 54N156W. WITHIN 300 NM SE OF FRONT WINDS 25 TO
35 KT. SEAS 3 TO 5.5 M.
.12 HOUR FORECAST LOW 59N147W 979 MB. NE OF A LINE FROM LOW TO
59N139W TO 55N136W WINDS 35 TO 50 KT. SEAS 4 TO 7 M.
.24 HOUR FORECAST LOW 60N147W 982 MB. WITHIN 720 NM S QUADRANT
WINDS 25 TO 40 KT. SEAS 4 TO 8 M. ELSEWHERE FROM 42N TO 60N
BETWEEN 141W AND 170W.
.48 HOUR FORECAST LOW 59N145W 1001 MB. FROM 47N TO 59N BETWEEN
134W AND 158W WINDS 20 TO 30 KT. SEAS 2.5 TO 5 M.
...GALE WARNING...
.LOW 58N149W 997 MB DRIFTING NE 05 KT. WITHIN 420 NM SE QUADRANT
WINDS 25 TO 35 KT. SEAS 2.5 TO 5 M.
.24 HOUR FORECAST LOW ABSORBED AND CONDITONS DESCRIBED BY LOW
60N147W DESCRIBED ABOVE.
...GALE WARNING...
.LOW 43N130W 1005 MB MOVING S 20 KT THEN TURNING SE. WITHIN 300
NM W SEMICIRCLE WINDS 30 TO 45 KT. SEAS 3 TO 6 M.
.24 HOUR FORECAST LOW 33N130W 1006 MB. FROM 30N TO 38N BETWEEN
130W AND 137W WINDS 25 TO 35 KT. SEAS 3 TO 5.5 M.
.48 HOUR FORECAST LOW 30N124W 1008 MB. S OF 35N BETWEEN 119W AND
144W WINDS LESS THAN 25 KT. SEAS 2.5 TO 3.5 M.
...GALE WARNING...
.36 HOUR FORECAST LOW 48N176W 1009 MB. WITHIN 480 NM SW QUADRANT
WINDS 25 TO 35 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW 47N170W 1004 MB. WITHIN 180 NM NW...360 NM
S AND 300 NM SW QUADRANTS WINDS 25 TO 35 KT. SEAS 2.5 TO 5 M.
.SYNOPSIS AND FORECAST.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 53N TO 59N
BETWEEN 138W AND 157W AND FROM 60N TO 63N BETWEEN 166W AND 174W.
.24 HOUR FORECAST CONDITIONS IMPROVED.
.48 HOUR FORECAST DENSE FOG FROM 46N TO 49N BETWEEN 165W AND
172W.
.FORECASTER HYDE. OCEAN PREDICTION CENTER.
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 TUE OCT 20.
24 HOUR FORECAST VALID 0000 UTC WED OCT 21.
48 HOUR FORECAST VALID 0000 UTC THU OCT 22.
.WARNINGS.
...GALE WARNING...
.WITHIN 16N94W TO 16N95W TO 15N96W TO 15N95W TO 15N94W TO
16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 30 TO 40
KT. SEAS 2.5 TO 3.5 M. ELSEWHERE WITHIN 15N94W TO 16N94W TO
16N95W TO 14N97W TO 12N97W TO 12N96W TO 15N94W N TO NE WINDS 20
TO 30 KT. SEAS 2.5 TO 3.0 M. REMAINDER OF AREA WITHIN 13N94W TO
15N96W TO 13N99W TO 07N102W TO 03N98W TO 03N95W TO 13N94W WINDS
20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N TO NE SWELL.
.24 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 15N95W TO
16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 25 TO 35 KT.
SEAS 2.5 TO 3.0 M. ELSEWHERE WITHIN 14N95W TO 15N95W TO 16N96W
TO 13N98W TO 12N98W TO 11N97W TO 14N95W NE TO E WINDS 25 TO 35
KT. SEAS 2.5 TO 3.0 M. REMAINDER OF AREA WITHIN 14N95W TO 14N98W
TO 10N102W TO 09N102W TO 08N100W TO 11N95W TO 14N95W WINDS 20 KT
OR LESS. SEAS 2.5 TO 3.0 M IN NE SWELL.
.30 HOUR FORECAST WITHIN 14N95W TO 16N95W TO 14N96W TO 13N99W TO
12N99W TO 12N97W TO 14N95W...INCLUDING THE GULF OF
TEHUANTEPEC...NE WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M. ELSEWHERE
WITHIN 13N95W TO 11N98W TO 13N99W TO 11N101W TO 08N102W TO 09N97W
TO 13N95W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE SWELL.
.48 HOUR FORECAST WITHIN 16N94W TO 14N99W TO 13N101W TO 11N97W
TO 13N95W TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC...NE TO E
WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M.
.SYNOPSIS AND FORECAST.
.POST-TROPICAL CYCLONE TRUDY NEAR 19.5N 108.0W 1005 MB AT 0300
UTC OCT 20 MOVING N OR 360 DEG AT 2 KT. MAXIMUM SUSTAINED WINDS
30 KT GUSTS 40 KT. WITHIN 20N107W TO 20N108W TO 20N109W TO
19N109W TO 18N107W TO 19N107W TO 20N107W WINDS 20 TO 30 KT. SEAS
2.5 TO 3.0 M. WITHIN 21N107W TO 21N108W TO 21N110W TO 19N110W TO
18N107W TO 19N106W TO 21N107W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN SE TO S SWELL.
.12 HOUR FORECAST POST-TROPICAL REMNANT LOW TRUDY NEAR 19.3N
108.6W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.24 HOUR FORECAST POST-TROPICAL REMNANT LOW TRUDY NEAR 19.4N
109.2W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. WITHIN 20N108W
TO 20N109W TO 20N110W TO 19N110W TO 19N108W TO 20N108W WINDS 20
TO 25 KT. SEAS LESS THAN 2.5 M.
.36 HOUR FORECAST POST-TROPICAL REMNANT LOW TRUDY NEAR 19.6N
109.9W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.
.48 HOUR FORECAST...DISSIPATED.
.WITHIN 30N125W TO 30N128W TO 29N130W TO 28N130W TO 28N128W TO
29N125W TO 30N125W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN W
SWELL.
.24 HOUR FORECAST WITHIN 30N130W TO 30N140W TO 29N136W TO
29N134W TO 30N130W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW
SWELL.
.48 HOUR FORECAST WITHIN 30N120W TO 30N140W TO 24N140W TO
22N134W TO 25N124W TO 30N120W WINDS 20 KT OR LESS. SEAS 2.5 TO
4.0 M IN N SWELL.
.36 HOUR FORECAST NEW LOW PRES...POSSIBLE TROPICAL CYCLONE...
NEAR 09N100W 1006 MB. WITHIN 11N97W TO 12N100W TO 09N102W TO
06N98W TO 07N96W TO 09N98W TO 11N97W WINDS 20 TO 25 KT. SEAS 2.5
TO 3.0 M IN NE TO E SWELL.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
09.5N100.5W 1004 MB. WITHIN 12N100W TO 12N101W TO 11N103W TO
08N102W TO 08N100W TO 09N99W TO 12N100W WINDS 20 TO 30 KT. SEAS
2.5 TO 3.0 M. ELSEWHERE WITHIN 10N97W TO 12N101W TO 11N103W TO
07N102W TO 05N98W TO 06N97W TO 10N97W WINDS 20 KT OR LESS. SEAS
2.5 TO 3.0 M IN S SWELL.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 0230 UTC TUE OCT 20...
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N84W TO A 1009 MB LOW PRES NEAR 10.5N94W
TO 04N107W. ITCZ FROM 04N107W TO BEYOND 05N140W. SCATTERED
MODERATE TO ISOLATED STRONG FROM 00N TO 15N E OF 104W...AND FROM
01N TO 08N AND W OF 129W.
$$
.FORECASTER ERA. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 0000 UTC OCT 20 2026.
24 HOUR FORECAST VALID 0000 UTC OCT 21 2026.
48 HOUR FORECAST VALID 0000 UTC OCT 22 2026.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.LOW NEAR 07N180W 1009 MB MOVING E SLOWLY. SCATTERED MODERATE
TSTMS FROM 04N TO 08N W OF 172W.
.24 HOUR FORECAST LOW NEAR 09N178W.
.48 HOUR FORECAST LOW NEAR 08N176W.
.STATIONARY FRONT 30N178W 29N180W.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH 30N179W 29N180W.
.48 HOUR FORECAST TROUGH MOVED N OF AREA.
.ENE WINDS 20 TO 25 KT FROM 14N TO 24N BETWEEN 152W AND 164W.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 15N TO 26N BETWEEN
150W AND 163W.
.48 HOUR FORECAST 48 HOUR FORECAST WINDS 20 KT OR LESS.
.SEAS 2.5 M TO 3 M IN AREA BOUNDED BY 29N151W 22N142W 14N156W
24N168W 29N151W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M IN AREA BOUNDED BY 26N157W
16N144W 14N165W 25N165W 26N157W .
.48 HOUR FORECAST SEAS 2.5 TO 3 M E OF A LINE FROM 30N145W TO
24N140W...AND BETWEEN 17N AND 24N W OF 179W.
.WINDS 20 KT OR LESS AND SEAS 2.5 M OR LOWER OVER REMAINDER OF
FORECAST AREA.
.ITCZ 05N140W 05N156W. ISOLATED MODERATE TSTMS WITHIN 240 NM N
OF ITCZ W OF 147W.
.MONSOON TROUGH FROM 03N160W TO 06N170W TO 07N180W.
.ISOLATED MODERATE TSTMS FROM 08N TO 15N BETWEEN 151W AND 165W.
$$
.FORECASTER VAUGHAN. HONOLULU HI.=