TCMEP4
TROPICAL STORM NORBERT FORECAST/ADVISORY NUMBER 9
NWS NATIONAL HURRICANE CENTER MIAMI FL EP142026
2100 UTC FRI SEP 11 2026
TROPICAL STORM CENTER LOCATED NEAR 16.8N 125.7W AT 11/2100Z
POSITION ACCURATE WITHIN 30 NM
PRESENT MOVEMENT TOWARD THE WEST OR 275 DEGREES AT 12 KT
ESTIMATED MINIMUM CENTRAL PRESSURE 996 MB
MAX SUSTAINED WINDS 55 KT WITH GUSTS TO 65 KT.
50 KT....... 30NE 0SE 0SW 20NW.
34 KT....... 90NE 40SE 30SW 50NW.
4 M SEAS....150NE 60SE 90SW 120NW.
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 16.8N 125.7W AT 11/2100Z
AT 11/1800Z CENTER WAS LOCATED NEAR 16.7N 125.2W
FORECAST VALID 12/0600Z 16.9N 127.2W
MAX WIND 60 KT...GUSTS 75 KT.
50 KT... 30NE 0SE 0SW 20NW.
34 KT... 90NE 40SE 30SW 60NW.
FORECAST VALID 12/1800Z 17.3N 129.1W
MAX WIND 65 KT...GUSTS 80 KT.
64 KT... 15NE 0SE 0SW 0NW.
50 KT... 30NE 0SE 0SW 20NW.
34 KT... 90NE 40SE 30SW 60NW.
FORECAST VALID 13/0600Z 17.7N 131.0W
MAX WIND 70 KT...GUSTS 85 KT.
64 KT... 15NE 0SE 0SW 0NW.
50 KT... 30NE 10SE 0SW 20NW.
34 KT... 90NE 40SE 30SW 60NW.
FORECAST VALID 13/1800Z 18.1N 132.9W
MAX WIND 70 KT...GUSTS 85 KT.
64 KT... 15NE 0SE 0SW 10NW.
50 KT... 30NE 20SE 20SW 20NW.
34 KT... 90NE 40SE 40SW 60NW.
FORECAST VALID 14/0600Z 18.3N 134.8W
MAX WIND 65 KT...GUSTS 80 KT.
64 KT... 20NE 0SE 0SW 15NW.
50 KT... 30NE 20SE 20SW 30NW.
34 KT... 80NE 40SE 30SW 50NW.
FORECAST VALID 14/1800Z 18.4N 136.8W
MAX WIND 60 KT...GUSTS 75 KT.
50 KT... 30NE 20SE 0SW 20NW.
34 KT... 70NE 30SE 30SW 50NW.
EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 100 NM
ON DAY 4 AND 125 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY
OUTLOOK VALID 15/1800Z 18.2N 141.2W
MAX WIND 55 KT...GUSTS 65 KT.
50 KT... 30NE 0SE 0SW 20NW.
34 KT... 50NE 30SE 30SW 40NW.
OUTLOOK VALID 16/1800Z 16.7N 145.5W
MAX WIND 55 KT...GUSTS 65 KT.
50 KT... 20NE 0SE 0SW 30NW.
34 KT... 40NE 30SE 30SW 50NW.
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 16.8N 125.7W
NEXT ADVISORY AT 12/0300Z
$$
FORECASTER EVANS/HAGEN=
HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2345 UTC FRI SEP 11 2026
CCODE/2:31:12:11:00/AOW+POR+AOE/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC SEP 11.
24 HOUR FORECAST VALID 1800 UTC SEP 12.
48 HOUR FORECAST VALID 1800 UTC SEP 13.
.WARNINGS.
...GALE WARNING...
.LOW JUST S OF AREA NEAR 29N172W 1003 MB MOVING NW 15 KT. FROM
30N TO 35N BETWEEN 166W AND 172W WINDS 25 TO 40 KT. SEAS 4 TO 6
M. ELSEWHERE FROM 30N TO 37N BETWEEN 166W AND 177W WINDS 20 TO
30 KT. SEAS 2.5 TO 5 M.
.24 HOUR FORECAST LOW 35N175W 999 MB. WITHIN 300 NM SW...180 NM
NW AND 300 NM NE QUADRANTS WINDS 25 TO 40 KT. SEAS 3 TO 5.5 M.
ELSEWHERE FROM 30N TO 42W W OF 166W WINDS 20 TO 30 KT. SEAS 2.5
TO 4.5 M.
.48 HOUR FORECAST LOW 32N178W 1001 MB. FROM 30N TO 40N W OF 168W
WINDS 20 TO 30 KT. SEAS 2.5 TO 5.5 M...HIGHEST NEAR 32N171W.
.SYNOPSIS AND FORECAST.
.FROM 32N TO 42N BETWEEN 140W AND 155W WINDS TO 25 KT. SEAS TO 3
M.
.24 HOUR FORECAST FROM 33N TO 40N BETWEEN 138W AND 155W WINDS TO
25 KT. SEAS TO 3 M.
.48 HOUR FORECAST CONDITIONS DIMINISHED.
.LOW 49N126W 1013 MB MOVING S 25 KT. WITHIN 540 NM W SEMICIRCLE
WINDS TO 25 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 45N126W 1011 MB. WITHIN 420 NM W
SEMICIRCLE WINDS TO 25 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.
.N OF A LINE FROM 52N170E TO 65N156W WINDS 20 TO 30 KT. SEAS TO
3.5 M.
.24 HOUR FORECAST N OF 61N W OF ALASKA WINDS TO 25 KT. SEAS LESS
THAN 2.5 M.
.48 HOUR FORECAST CONDITIONS DIMINISHED.
.48 HOUR FORECAST FROM 30N TO 42N BETWEEN 116W AND 126W WINDS 20
TO 30 KT. SEAS TO 3.5 M.
.48 HOUR FORECAST NEW LOW 52N175W 1004 MB. FROM 40N TO 56N W OF
165W WINDS 20 TO 30 KT. SEAS TO 3.5 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 44N TO 60N
BETWEEN 160W AND 180W.
.24 HOUR FORECAST DENSE FOG WITHIN 240 NM SE OF A LINE FROM
50N180W TO 58N163W.
.48 HOUR FORECAST DENSE FOG FROM 42N TO 56N BETWEEN 166W AMD
178W.
.FORECASTER HOLLEY. 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 1800 UTC FRI SEP 11.
24 HOUR FORECAST VALID 1800 UTC SAT SEP 12.
48 HOUR FORECAST VALID 1800 UTC SUN SEP 13.
.WARNINGS.
...HURRICANE WARNING...
.TROPICAL STORM NORBERT NEAR 16.8N 125.7W 996 MB AT 2100 UTC SEP
11
MOVING W OR 275 DEG AT 12 KT. MAXIMUM SUSTAINED WINDS 55 KT
GUSTS 65
KT. TROPICAL STORM FORCE WINDS WITHIN 90 NM NE QUADRANT...40 NM
SE
QUADRANT...30 NM SW QUADRANT...AND 50 NM NW QUADRANT. SEAS 4 M
OR
GREATER WITHIN 150 NM NE QUADRANT...60 NM SE QUADRANT...90 NM SW
QUADRANT...AND 120 NM NW QUADRANT WITH SEAS TO 6.0 M. ELSEWHERE
FROM
15N TO 20N BETWEEN 121W AND 128W WINDS 20 TO 33 KT. SEAS 3.0 TO
4.0
M. REMAINDER OF THE AREA FROM 13N TO 21N BETWEEN 121W AND 128W
WINDS
20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE NORBERT NEAR 17.3N 129.1W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS
WITHIN
90 NM NE QUADRANT...40 NM SE QUADRANT...30 NM SW QUADRANT...AND
60
NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 150 NM NE
QUADRANT...60
NM SE QUADRANT...90 NM SW QUADRANT...AND 120 NM NW QUADRANT WITH
SEAS TO 7.0 M. ELSEWHERE FROM 16N TO 21N BETWEEN 125W AND 131W
WINDS
20 TO 33 KT. SEAS 3.0 TO 4.0 M. REMAINDER OF THE AREA FROM 12N
TO
22N BETWEEN 125W AND 133W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M
IN
MIXED SWELL.
.48 HOUR FORECAST HURRICANE NORBERT NEAR 18.1N 132.9W. MAXIMUM
SUSTAINED WINDS 70 KT GUSTS 85 KT. TROPICAL STORM FORCE WINDS
WITHIN
40 NM S SEMICIRCLE...90 NM NE QUADRANT AND 60 NM NW QUADRANT.
SEAS 4
M OR GREATER WITHIN 150 NM NE QUADRANT...60 NM SE QUADRANT...90
NM
SW QUADRANT...AND 120 NM NW QUADRANT WITH SEAS TO 8.0 M.
ELSEWHERE
FROM 17 TO 23N BETWEEN 128W AND 135W WINDS 20 TO 33 KT. SEAS 3.0
TO
4.0 M. REMAINDER OF THE AREA FROM 15N TO 24N BETWEEN 128W AND
136W
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.
.SYNOPSIS AND FORECAST.
.FROM 10N TO 11N E OF 89W...INCLUDING THE GULF OF PAPAGAYO...NE
TO
E WINDS 20 TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.
.S OF 00N BETWEEN 95W AND 100W...AND S OF 01N BETWEEN 100W AND
120W
WINDS 20 KT OR LESS. SEAS 2.5 M PRIMARILY IN SW SWELL.
.24 HOUR FORECAST S OF 00S BETWEEN 116W AND 120W WINDS 20 KT OR
LESS. SEAS 2.5 M PRIMARILY IN SW SWELL.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.06 HOUR FORECAST FROM 14N TO 17N BETWEEN 109W AND 113W E TO SE
WINDS 20 TO 25 KT. SEAS TO 2.5 M
.24 HOUR FORECAST LOW PRES...PSBL TRPCL CYCLONE...NEAR 15N114.5W
1008 MB. WITHIN 90 NM E SEMICIRCLE OF LOW CENTER WINDS 20 TO 25
KT.
SEAS TO 2.5 M.
.48 HOUR FORECAST LOW PRES...PSBL TRPCL CYCLONE...NEAR 16N116W
1007
MB. WITHIN 120 NM OF CENTER EXCEPT SW QUADRANT WINDS 20 TO 30
KT.
SEAS 2.5 TO 3.5 M.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 2100 UTC FRI SEP 11...
.TROPICAL STORM NORBERT...NUMEROUS MODERATE TO STRONG CONVECTION
IS
OBSERVED FROM 16N TO 19N BETWEEN 123W AND 127W.
.LOW PRES(EP97) NEAR 13N113W...SCATTERED MODERATE TO ISOLATED
STRONG CONVECTION IS PRESENT FROM 11N TO 16N BETWEEN 107W AND
115W.
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH EXTENDS FROM 10N85W TO 08N100W TO
11N110W...THEN
CONTINUES SW OF NORBERT FROM 11N126W TO 12N140W. IN ADDITION TO
THE
CONVECTION ASSOCIATED WITH T.S. NORBERT AND INVEST
EP97...SCATTERED
MODERATE TO ISOLATED STRONG CONVECTION IS FOUND FROM 04N TO 08N
E OF
92W TO THE COAST OF COLOMBIA...FROM 10N TO 16N BETWEEN 115W AND
123W...AND FROM 00N TO 11N W OF 125W.
$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 1800 UTC SEP 11 2026.
24 HOUR FORECAST VALID 1800 UTC SEP 12 2026.
48 HOUR FORECAST VALID 1800 UTC SEP 13 2026.
.WARNINGS.
...GALE WARNING...
.LOW 29N172W 1003 MB MOVING N 15 KT. TROUGH FROM LOW OF 27N172W
26N176W NEARLY STATIONARY. WINDS 30 TO 35 KT N OF 28N BETWEEN 168W
AND 171W. WINDS 20 TO 30 KT ELSEWHERE N 26N BETWEEN 163W AND
176W. SEAS 2.5 TO 4 M N OF LINE 27N162W 22N176W 23N180W.
.24 HOUR FORECAST LOW MOVED N OF AREA. TROUGH ABSORBED BY FRONT
DESCRIBED BELOW. ASSOCIATED WINDS AND SEAS. MOVED N OF AREA.
.SYNOPSIS AND FORECAST
.24 HOUR FORECAST NEW FRONT 30N172W 27N174W 27N180W.
.48 HOUR FORECAST FRONT 30N172W 25N174W THENCE TROUGH 22N180W.
.TROUGH 30N150W 27N151W MOVING W SLOWLY.
.24 HOUR FORECAST TROUGH 30N152W 26N155W.
.48 HOUR FORECAST TROUGH 30N152W 27N153W 26N157W.
.TROUGH 28N140W 22N146W MOVING W SLOWLY.
.24 HOUR FORECAST TROUGH 30N140W 25N146W.
.48 HOUR FORECAST TROUGH 30N142W 25N147W 21N149W.
.TROUGH 17N141W 12N148W MOVING W SLOWLY. ISOLATED MODERATE TSTMS
WITHIN 150 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 20N144W 11N150W.
.48 HOUR FORECAST TROUGH 21N150W 15N150W 12N140W.
.TROUGH 21N160W 13N162W MOVING NW 10 KT.
.24 HOUR FORECAST WEAK TROUGH 22N164W 17N163W.
.48 HOUR FORECAST TROUGH 23N167W 20N165W.
.WINDS 20 KT OR LOWER AND SEAS 2.5 M OR LESS OVER REMAINDER OF
FORECAST AREA.
.MONSOON TROUGH 10N140W 10N160W 047N180W. ISOLATED STRONG TSTMS
WITHIN 330 NM S OF TROUGH W OF 165W. SCATTERED MODERATE TSTMS
ELSEWHERE WITHIN 420 NM S OF TROUGH.
.ISOLATED MODERATE TSTMS BETWEEN TWO LINES FROM 17N143W TO
04N173W AND 06N140W AND 03N171W. ISOLATED MODERATE TSTMS WITHIN 60
NM OF 08N178W.
$$
.FORECASTER ALMANZA/EE. HONOLULU HI.=