TCMEP4
TROPICAL STORM NORBERT FORECAST/ADVISORY NUMBER 16
NWS NATIONAL HURRICANE CENTER MIAMI FL EP142026
1500 UTC SUN SEP 13 2026
TROPICAL STORM CENTER LOCATED NEAR 18.2N 132.7W AT 13/1500Z
POSITION ACCURATE WITHIN 30 NM
PRESENT MOVEMENT TOWARD THE WEST OR 280 DEGREES AT 10 KT
ESTIMATED MINIMUM CENTRAL PRESSURE 1000 MB
MAX SUSTAINED WINDS 45 KT WITH GUSTS TO 55 KT.
34 KT....... 80NE 20SE 30SW 90NW.
4 M SEAS.... 90NE 30SE 30SW 90NW.
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 18.2N 132.7W AT 13/1500Z
AT 13/1200Z CENTER WAS LOCATED NEAR 18.1N 132.1W
FORECAST VALID 14/0000Z 18.6N 134.4W
MAX WIND 45 KT...GUSTS 55 KT.
34 KT... 80NE 20SE 30SW 90NW.
FORECAST VALID 14/1200Z 19.0N 137.0W
MAX WIND 40 KT...GUSTS 50 KT.
34 KT... 50NE 0SE 0SW 40NW.
FORECAST VALID 15/0000Z 19.4N 139.7W
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 40NE 0SE 0SW 20NW.
FORECAST VALID 15/1200Z 19.7N 142.4W
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 30NE 0SE 0SW 20NW.
FORECAST VALID 16/0000Z 19.8N 145.1W...POST-TROP/REMNT LOW
MAX WIND 30 KT...GUSTS 40 KT.
FORECAST VALID 16/1200Z...DISSIPATED
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 18.2N 132.7W
NEXT ADVISORY AT 13/2100Z
$$
FORECASTER KATZ/BROWN=
HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1145 UTC SUN SEP 13 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).
SECURITE
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 0600 UTC SEP 13.
24 HOUR FORECAST VALID 0600 UTC SEP 14.
48 HOUR FORECAST VALID 0600 UTC SEP 15.
.WARNINGS.
...GALE WARNING...
.24 HOUR FORECAST NEW LOW 45N174W 1004 MB. WITHIN 180 NM E AND
NE QUADRANTS WINDS 25 TO 35 KT. SEAS TO 3.5 M. ELSEWHERE FROM
42N TO 51N W OF 168W WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 61N169W 998 MB.
FROM 51N TO 64N BETWEEN 155W AND 175W WINDS 20 TO 30 KT. SEAS
TO 3.5 M.
...GALE WARNING...
.COMPLEX LOW WITH MAIN CENTER 37N178W 1003 MB MOVING SW 10 KT
WILL TURN SE AFTER 12 HOURS AND THEN BECOME NEARLY STATIONARY.
FROM 30N TO 40N W OF 167W WINDS 20 TO 30 KT. SEAS 2.5 TO 5 M...
HIGHEST JUST NE OF MAIN CENTER.
.24 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER 32N175W 1003 MB.
FROM 30N TO 42N W OF 169W WINDS TO 25 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW 32N176W 1002 MB. W OF A LINE FROM 33N177W
TO 40N174W WINDS 25 TO 35 KT. SEAS 3 TO 5 M. ELSEWHERE FROM 30N
TO 44N W OF 166W WINDS TO 25 KT. SEAS TO 3.5 M.
.SYNOPSIS AND FORECAST.
.COMPLEX LOW WITH MAIN CENTER NEAR 34N150W 1015 MB DRIFTING
SW. FROM 35N TO 43N BETWEEN 137W AND 153W WINDS TO 25 KT. SEAS
TO 3 M.
.24 HOUR FORECAST LOW DISSIPATED. FROM 36N TO 42N BETWEEN 141W
AND 157W WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST FROM 33N TO 43N BETWEEN 141W AND 166W WINDS
TO 25 KT. SEAS TO 3 M.
.LOW 44N126W 1010 MB MOVING E 15 KT. FROM 40N TO 52N BETWEEN
126W AND 137W WINDS TO 25 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW DISSIPATED. FROM 50 TO 55N E OF 137W NW
WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST CONDITIONS DIMINISHED.
.N OF 63N BETWEEN THE W OF COAST OF ALASKA AND 166W SW WINDS
TO 25 KT. SEAS TO 2.5 M.
.12 HOUR FORECAST CONDITIONS DIMINISHED.
.FROM 31N TO 38N BETWEEN 118W AND 125W N TO NW WINDS TO
25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST FROM 30N TO 40N BETWEEN 118W AND 128W
N TO NW WINDS 20 TO 30 KT. SEAS TO 3 M.
.48 HOUR FORECAST FROM 30N TO 43N BETWEEN 120W AND 131W
N TO NW WINDS TO 25 KT. SEAS TO 3 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 42N TO
57N W OF 157W.
.24 HOUR FORECAST DENSE FOG N OF 45N BETWEEN 162W AND 177W.
.48 HOUR FORECAST DENSE FOG FROM 45N TO 52N BETWEEN 161W
AND 169W.
.FORECASTER MILLS. 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 0600 UTC SUN SEP 13.
24 HOUR FORECAST VALID 0600 UTC MON SEP 14.
48 HOUR FORECAST VALID 0600 UTC TUE SEP 15.
.WARNINGS.
...TROPICAL STORM WARNING...
.TROPICAL STORM NORBERT NEAR 18.0N 131.7W 1000 MB AT 0900 UTC
SEP 13 MOVING W OR 280 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 45
KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 70 NM N
SEMICIRCLE...30 NM SE QUADRANT AND 20 NM SW QUADRANT. SEAS 4 M
OR GREATER WITHIN 120 NM N SEMICIRCLE...45 NM SE QUADRANT AND 60
NM SW QUADRANT WITH SEAS TO 6.0 M. ELSEWHERE WITHIN 22N129W TO
23N132W TO 20N134W TO 18N133W TO 17N130W TO 18N128W TO 22N129W
WINDS 20 TO 33 KT. SEAS 3.0 TO 4.0 M. REMAINDER OF AREA WITHIN
22N128W TO 24N134W TO 20N136W TO 16N135W TO 15N130W TO 19N127W TO
22N128W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM NORBERT NEAR 18.8N 135.8W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE
WINDS WITHIN 70 NM N SEMICIRCLE...10 NM SE QUADRANT AND 20 NM SW
QUADRANT. SEAS 4 M OR GREATER WITHIN 120 NM N AND 60 NM S
SEMICIRCLES WITH SEAS TO 5.0 M. ELSEWHERE WITHIN 23N130W TO
25N136W TO 22N139W TO 18N139W TO 16N137W TO 19N131W TO 23N130W
WINDS 20 TO 33 KT. SEAS 2.5 TO 4.0 M IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM NORBERT W OF AREA NEAR 19.4N
141.1W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM
FORCE WINDS WITHIN 50 NM N SEMICIRCLE AND 0 NM S SEMICIRCLE.
SEAS 4 M OR GREATER WITHIN 150 NM NE QUADRANT WITH SEAS TO 4.5
M. ELSEWHERE OVER FORECAST WATERS E OF 140W WITHIN 22N134W TO
24N137W TO 24N140W TO 20N140W TO 19N138W TO 20N135W TO 22N134W
WINDS 20 TO 33 KT. SEAS 3.0 TO 4.0 M. REMAINDER OF AREA WITHIN
26N134W TO 26N140W TO 18N140W TO 18N134W TO 22N131W TO 26N134W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SWELL.
FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.
...GALE WARNING...
.LOW PRESSURE NEAR 17N115W 1009 MB. WITHIN 20N115W TO 19N117W TO
18N116W TO 18N115W TO 16N114W TO 17N113W TO 20N115W SE WINDS 20
TO 25 KT. SEAS 2.5 TO 3.0 M IN SE SWELL.
.24 HOUR FORECAST LOW PRESSURE...POSSIBLE TROPICAL CYCLONE...NEAR
17N117W 1007 MB. WITHIN 20N116W TO 20N119W TO 19N121W TO 17N120W
TO 16N116W TO 17N115W TO 20N116W E WINDS 20 TO 30 KT. SEAS 2.5
TO 3.0 M.
.42 HOUR FORECAST LOW PRESSURE...POSSIBLE TROPICAL CYCLONE...NEAR
17N120W 1005 MB. WITHIN 19N119.5W TO 19N120W TO 19N121W TO
18N121W TO 18.5N119.5W TO 19N119.5W E WINDS 30 TO 35 KT. SEAS 2.5
TO 3.0 M. ELSEWHERE WITHIN 21N118W TO 22N124W TO 19N126W TO
17N123W TO 16N118W TO 17N116W TO 21N118W NE TO E WINDS 20 TO 30
KT. SEAS 2.5 M.
.48 HOUR FORECAST LOW PRESSURE...POSSIBLE TROPICAL CYCLONE...NEAR
17N121W 1004 MB. LITTLE CHANGE IN WINDS AND SEAS.
.SYNOPSIS AND FORECAST.
.WITHIN 11N86W TO 12N89W TO 11N90W TO 10N89W TO 10N87W TO
11N86W...INCLUDING THE GULF OF PAPAGAYO... NE TO E WINDS 20 TO
25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.
.WITHIN 03N119W TO 00N131W TO 03.4S120W TO 01S120W TO 03.4S113W
TO 03N119W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S SWELL.
.24 HOUR FORECAST WITHIN 01N102W TO 02N123W TO 00N133W TO
03.4S120W TO 03.4S94W TO 01N102W WINDS 20 KT OR LESS. SEAS 2.5
TO 3.0 M IN S TO SW SWELL.
.48 HOUR FORECAST WITHIN 03N98W TO 04N105W TO 00N120W TO
03.4S120W TO 03.4S94W TO 03N98W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN S TO SW SWELL.
.24 HOUR FORECAST WITHIN 30N120W TO 30N124W TO 29N124W TO
28N122W TO 30N120W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N
SWELL.
.48 HOUR FORECAST WITHIN 30N121W TO 30N128W TO 29N128W TO
28N125W TO 28N122W TO 30N121W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN N SWELL.
.48 HOUR FORECAST WITHIN 16.5N94.5W TO 16.5N95W TO 16N95.5W TO
14.5N95.5W TO 14.5N95W TO 15N94.5W TO 16.5N94.5W...INCLUDING THE
GULF OF TEHUANTEPEC... N WINDS 20 TO 25 KT. SEAS LESS THAN 2.5
M.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 0900 UTC SUN SEP 13...
.T.S. NORBERT...NUMEROUS MODERATE TO SCATTERED STRONG WITHIN 90
NM NW AND 60 NM SE SEMICIRCLES.
.INVEST EP97...SCATTERED MODERATE WITHIN 60 NM OF CENTER.
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 08N78W TO 07N110W...AND FROM 14N130W TO
BEYOND 11N140W. SCATTERED MODERATE FROM 05N TO 11N EAST OF 105W.
$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 0600 UTC SEP 13 2026.
24 HOUR FORECAST VALID 0600 UTC SEP 14 2026.
48 HOUR FORECAST VALID 0600 UTC SEP 15 2026.
.WARNINGS.
...TROPICAL STORM WARNING...
.TROPICAL STORM NORBERT NEAR 18.0N 131.7W 1000 MB AT 0900 UTC
SEP 13 MOVING W OR 280 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 45
KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 70 NM N
SEMICIRCLE...30 NM SE QUADRANT AND 20 NM SW QUADRANT. SEAS 4 M
OR GREATER WITHIN 120 NM N SEMICIRCLE...45 NM SE QUADRANT AND 60
NM SW QUADRANT WITH SEAS TO 5 M.
.48 HOUR FORECAST TROPICAL STORM NORBERT NEAR 19.4N 141.1W.
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE
WINDS WITHIN 50 NM N SEMICIRCLE AND 0 NM S SEMICIRCLE. SEAS TO
3.5 M.
FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.
END OF NEW TROPICAL INFORMATION
.FRONT 30N169W 28N170W THENCE TROUGH 22N178W. FRONT AND TROUGH
NEARLY STATIONARY.
.24 HOUR FORECAST FRONT AND TROUGH MERGED WITH FRONT DESCRIBED
BELOW.
.FRONT 30N172W 27N174W THENCE TROUGH 24N180W MOVING E SLOWLY.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH 30N172W 23N177W.
.48 HOUR FORECAST TROUGH 30N174W 26N180W.
.TROUGH 30N151W 26N153W MOVING W SLOWLY.
.24 HOUR FORECAST TROUGH 30N152W 27N153W.
.48 HOUR FORECAST TROUGH DISSIPATED.
.LOW NEAR 12N147W 1007 MB. TROUGH FROM 28N142W TO 20N150W TO LOW.
TROUGH MOVING NW 10 KT AND LOW NEARLY STATIONARY. ISOLATED
MODERATE TSTMS FROM 20N TO 13N WITHIN 180 NM OF TROUGH AND FROM
28N
TO 25N WITHIN 180 NM OF TROUGH.
.24 HOUR FORECAST LOW NEAR 11N147W 1006 MB. TROUGH FROM 30N145W
TO 21N150W TO 15N153W TO LOW.
.48 HOUR FORECAST LOW NEAR 11N153W 1006 MB. TROUGH FROM 30N151W
TO 20N154W TO 15N157W TO LOW.
.LOW NEAR 13N141W 1008 MB. MOVING W 10 KT.
.24 HOUR FORECAST LOW NEAR 14N145W 1008 MB.
.48 HOUR FORECAST LOW NEAR 13N148W 1009 MB..
.WINDS 20 KT OR LESS AND SEAS 2.5 M OR LOWER REMAINDER OF
FORECAST AREA.
.MONSOON TROUGH 13N140W 13N142W 11N145W 11N146W 11N147W 10N149W
09N156W AND 08N180W 09N170W 10N160W. ISOLATED MODERATE TSTMS
WITHIN
360 NM OF TROUGH.
$$
.FORECASTER KINO. HONOLULU HI.=