TCMEP4
TROPICAL STORM ISELLE FORECAST/ADVISORY NUMBER 13
NWS NATIONAL HURRICANE CENTER MIAMI FL EP092026
1500 UTC WED AUG 26 2026
TROPICAL STORM CENTER LOCATED NEAR 22.2N 124.0W AT 26/1500Z
POSITION ACCURATE WITHIN 30 NM
PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 295 DEGREES AT 8 KT
ESTIMATED MINIMUM CENTRAL PRESSURE 999 MB
MAX SUSTAINED WINDS 40 KT WITH GUSTS TO 50 KT.
34 KT.......200NE 170SE 60SW 120NW.
4 M SEAS....180NE 90SE 90SW 150NW.
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 22.2N 124.0W AT 26/1500Z
AT 26/1200Z CENTER WAS LOCATED NEAR 21.9N 123.6W
FORECAST VALID 27/0000Z 22.5N 125.3W...POST-TROPICAL
MAX WIND 35 KT...GUSTS 45 KT.
34 KT...110NE 80SE 30SW 70NW.
FORECAST VALID 27/1200Z 23.2N 127.0W...POST-TROP/REMNT LOW
MAX WIND 30 KT...GUSTS 40 KT.
FORECAST VALID 28/0000Z 23.9N 128.8W...POST-TROP/REMNT LOW
MAX WIND 30 KT...GUSTS 40 KT.
FORECAST VALID 28/1200Z 24.5N 130.7W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.
FORECAST VALID 29/0000Z 25.0N 132.4W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.
FORECAST VALID 29/1200Z...DISSIPATED
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 22.2N 124.0W
NEXT ADVISORY AT 26/2100Z
$$
FORECASTER KELLY=
TCMCP2
TROPICAL STORM LALA FORECAST/ADVISORY NUMBER 56
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI CP012026
ISSUED BY NWS NATIONAL HURRICANE CENTER MIAMI FL
0900 UTC WED AUG 26 2026
TROPICAL STORM CENTER LOCATED NEAR 35.4N 177.7W AT 26/0900Z
POSITION ACCURATE WITHIN 30 NM
PRESENT MOVEMENT TOWARD THE NORTHWEST OR 310 DEGREES AT 4 KT
ESTIMATED MINIMUM CENTRAL PRESSURE 997 MB
MAX SUSTAINED WINDS 40 KT WITH GUSTS TO 50 KT.
34 KT.......100NE 60SE 0SW 80NW.
4 M SEAS....165NE 90SE 120SW 180NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.
REPEAT...CENTER LOCATED NEAR 35.4N 177.7W AT 26/0900Z
AT 26/0600Z CENTER WAS LOCATED NEAR 35.3N 177.6W
FORECAST VALID 26/1800Z 35.9N 178.2W
MAX WIND 40 KT...GUSTS 50 KT.
34 KT... 90NE 60SE 0SW 70NW.
FORECAST VALID 27/0600Z 36.6N 178.7W
MAX WIND 40 KT...GUSTS 50 KT.
34 KT... 90NE 60SE 0SW 60NW.
FORECAST VALID 27/1800Z 37.4N 179.3W
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 80NE 60SE 0SW 60NW.
FORECAST VALID 28/0600Z 38.0N 180.0E...POST-TROPICAL
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 60NE 40SE 0SW 40NW.
FORECAST VALID 28/1800Z 38.6N 179.0E...POST-TROP/REMNT LOW
MAX WIND 30 KT...GUSTS 40 KT.
FORECAST VALID 29/0600Z 39.5N 177.6E...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.
EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM
ON DAY 4 AND 200 NM ON DAY 5...AND FOR INTENSITY NEAR 20 KT EACH DAY
OUTLOOK VALID 30/0600Z 44.5N 174.5E...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.
OUTLOOK VALID 31/0600Z...DISSIPATED
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 35.4N 177.7W
NEXT ADVISORY AT 26/1500Z
$$
FORECASTER REINHART
HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1145 UTC WED AUG 26 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 AUG 26.
24 HOUR FORECAST VALID 0600 UTC AUG 27.
48 HOUR FORECAST VALID 0600 UTC AUG 28.
.WARNINGS.
...TROPICAL STORM WARNING...
.TROPICAL STORM LALA NEAR 35.4N 177.7W 997 MB AT 0900 UTC AUG 26
MOVING NW OR 310 DEG AT 4 KT. MAXIMUM SUSTAINED WINDS 40 KT
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 100 NM NE
QUADRANT...60 NM SE QUADRANT...0 NM SW QUADRANT...AND 80 NM NW
QUADRANT. SEAS 4 M OR GREATER WITHIN 165 NM NE QUADRANT...90 NM
SE QUADRANT...120 NM SW QUADRANT...AND 180 NM NW QUADRANT WITH
SEAS TO 5.5 M. ELSEWHERE FROM 32N TO 40N W OF 171W WINDS 20 TO
33 KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST TROPICAL STORM LALA NEAR 36.6N 178.7W 998 MB.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE
WINDS WITHIN 60 NM NW AND SE QUADRANTS...90 NM NE QUADRANT AND 0
NM SW QUADRANT. SEAS 4 M OR GREATER WITHIN 165 NM NE
QUADRANT...90 NM SE QUADRANT...120 NM SW QUADRANT...AND 180 NM
NW QUADRANT WITH SEAS TO 5.5 M. ELSEWHERE FROM 33N TO 41N W OF
173W WINDS 20 TO 33 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST POST-TROPICAL CYCLONE LALA NEAR 38.0N 180W
1002 MB. FROM 33N TO 43N W OF 173W WINDS 25 TO 40 KT. SEAS 3 TO
5 M.
...GALE WARNING...
.LOW W OF AREA 51N163E 998 MB MOVING NE 15 KT. WITHIN 480 NM NE
QUADRANT AREA OF SE WINDS TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW W OF AREA 56N168E 993 MB. WITHIN 540 NM SE
QUADRANT AREA OF S TO SW WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M.
ELSEWHERE WITHIN 600 NM NE AND 660 NM SE QUADRANTS WINDS 20 TO
30 KT. SEAS 2.5 TO 3.5 M...HIGHEST SE QUADRANT.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 63N168W 990 MB.
FROM 50N TO 65N W OF 157W WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5
M...EXCEPT 3 TO 5 M FROM 53N TO 56N BETWEEN 179W AND 173E.
.SYNOPSIS AND FORECAST.
.LOW 45N133W 1009 MB MOVING NE 10 KT. FROM 42N TO 50N BETWEEN
132W AND 143W WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.
.24 HOUR FORECAST LOW 49N130W 1012 MB. FROM 41N TO 51N BETWEEN
127W AND 135W WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW MOVED INLAND. ASSOCIATED CONDITIONS
DIMINISHED.
.LOW 60N146W 1012 MB MOVING SE 10 KT. WITHIN 360 NM SW QUADRANT
AREA OF NW WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LOW 57N140W 1013 MB. NW OF A LINE FROM 55N153W
TO 57N148W AREA OF NW WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST LOW MOVED INLAND. ASSOCIATED CONDITIONS
DIMINISHED.
.FROM 33N TO 39N BETWEEN 120W AND 125W AREA OF NW TO N WINDS TO
25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST FROM 33N TO 40N BETWEEN 120W AND 126W AREA OF
NW TO N WINDS TO 25 KT. SEAS TO 3 M. ELSEWHERE S OF 32N BETWEEN
121W AND 131W WINDS LESS THAN 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST FROM 31N TO 42N BETWEEN 120W AND 127W AREA OF
NW TO N WINDS TO 25 KT. SEAS TO 3 M. ELSEWHERE S OF 32N BETWEEN
128W AND 138W WINDS LESS THAN 25 KT. SEAS TO 2.5 M.
.N OF 66N W OF ALASKA AREA OF NW WINDS TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST N OF 66N W OF ALASKA AREA OF E WINDS 20 TO 30
KT. SEAS TO 2.5 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 51N TO 53N W
OF 166W...N OF 58N BETWEEN 141W AND 150W...N OF 66N W OF
ALASKA...FROM 34N TO 37N BETWEEN 175W AND 178W...AND FROM 40N TO
43N E OF 125W.
.24 HOUR FORECAST DENSE FOG W OF A LINE FROM 45N180W TO 56N163W
TO 60N168W...FROM 35N TO 39N BETWEEN 175W AND 179W...AND FROM
39N TO 45N E OF 125W.
.48 HOUR FORECAST DENSE FOG FROM 60N TO 65N W OF ALASKA...AND
WITHIN AN AREA BOUNDED BY A LINE FROM 45N180W TO 53N168W TO
57N153W TO 60N164W TO 60N170W TO 58N168W TO 50N180W TO 45N180W.
.FORECASTER FIGURSKEY. 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 WED AUG 26.
24 HOUR FORECAST VALID 0600 UTC THU AUG 27.
48 HOUR FORECAST VALID 0600 UTC FRI AUG 28.
.WARNINGS.
...TROPICAL STORM WARNING...
.TROPICAL STORM ISELLE NEAR 21.8N 123.5W 996 MB AT 0900 UTC AUG
26 MOVING WNW OR 295 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 45 KT
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 200 NM NE
QUADRANT...170 NM SE QUADRANT...60 NM SW QUADRANT...AND 120 NM
NW QUADRANT. SEAS 4 M OR GREATER WITHIN 180 NM OF CENTER EXCEPT
120 NM SW QUADRANT WITH SEAS TO 7.0 M. ELSEWHERE WITHIN 30N119W
TO 27N128W TO 21N131W TO 17N125W TO 18N118W TO 22N116W TO
30N119W
WINDS 20 TO 33 KT. SEAS 2.5 TO 4.5 M. REMAINDER OF AREA WITHIN
24N120W TO 25N125W TO 23N126W TO 20N125W TO 20N121W TO 20N119W TO
24N120W WINDS 20 KT OR LESS. SEAS 2.5 TO 5.5 M IN MIXED SWELL.
.24 HOUR FORECAST POST-TROPICAL ISELLE NEAR 22.8N 126.4W. MAXIMUM
SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS
WITHIN 70 NM NE QUADRANT...60 NM SE QUADRANT...0 NM SW
QUADRANT...AND 50 NM NW QUADRANT. SEAS 4 M OR GREATER
WITHIN 105 NM NW SEMICIRCLE AND 60 NM SE QUADRANT WITH SEAS TO
4.5 M. ELSEWHERE WITHIN 24N125W TO 25N126W TO 24N130W TO 22N129W
TO 24N127W TO 22N125W TO 24N125W WINDS 20 TO 33 KT. SEAS 2.5 TO
4.5 M. REMAINDER OF AREA WITHIN 26N123W TO 30N129W TO 23N134W TO
19N131W TO 19N128W TO 23N122W TO 26N123W WINDS 20 KT OR LESS.
SEAS 2.5 TO 4.5 M IN MIXED SWELL.
.36 HOUR FORECAST POST-TROPICAL REMNANT LOW ISELLE NEAR 23.5N
128.3W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW ISELLE NEAR 23.8N
130.2W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. ELSEWHERE
WITHIN 26N128W TO 29N130W TO 26N134W TO 24N134W TO 22N132W TO
24N129W TO 26N128W NE WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M.
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.
.WITHIN 12N86W TO 12N88W TO 11N89W TO 10N89W TO 10N87W TO 11N86W
TO 12N86W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO
25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST WITHIN 11N86W TO 12N88W TO 11N89W TO 10N89W TO
10N88W TO 10N87W TO 11N86W...INCLUDING THE GULF OF PAPAGAYO...E
WINDS 20 TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST WITHIN 11N86W TO 12N87W TO 12N89W TO 10N90W
TO 10N89W TO 10N86W TO 11N86W...INCLUDING THE GULF OF PAPAGAYO...
NE TO E WINDS 20 TO 25 KT. SEAS TO 2.5 M.
.WITHIN 16N94W TO 16N95W TO 16N96W TO 14N96W TO 14N95W TO 15N94W
TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25
KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.
.06 HOUR FORECAST WITHIN 02S118W TO 01S119W TO 00N121W TO
02S120W TO 03.4S120W TO 03.4S117W TO 02S118W WINDS 20 KT OR
LESS. SEAS 2.5 TO 3.0 M IN S TO SW SWELL.
.24 HOUR FORECAST WITHIN 02N108W TO 00N114W TO 03.4S115W TO
03.4S106W TO 02N108W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S
TO SW SWELL.
.30 HOUR FORECAST CONDITIONS MERGED WITH SECTION BELOW.
.15 HOUR FORECAST WITHIN 14N105W TO 14N107W TO 14N109W TO
13N109W TO 11N107W TO 12N105W TO 14N105W E TO SE WINDS 20 TO 25
KT. SEAS 2.5 TO 3.0 M. WITHIN 09N106W TO 09N109W TO 07N111W TO
06N111W TO 06N109W TO 06N107W TO 09N106W SW WINDS 20 TO 25 KT.
SEAS 2.5 TO 3.0 M.
.24 HOUR FORECAST WITHIN 13N106W TO 15N109W TO 10N109W TO
07N112W TO 05N108W TO 07N106W TO 13N106W S WINDS 20 TO 25 KT.
SEAS 2.5 TO 3.0 M.
.48 HOUR FORECAST WITHIN 16N108W TO 17N115W TO 08N115W TO
04N111W TO 06N106W TO 16N108W S WINDS 20 TO 30 KT. SEAS 2.5 TO
3.0 M.
.24 HOUR FORECAST WITHIN 11N130W TO 11N132W TO 10N134W TO
08N133W TO 08N132W TO 09N130W TO 11N130W SW WINDS 20 TO 25 KT.
SEAS 2.5 TO 3.0 M.
.48 HOUR FORECAST WITHIN 13N127W TO 13N130W TO 11N132W TO
09N131W TO 09N129W TO 11N127W TO 13N127W SW WINDS 20 TO 25 KT.
SEAS 2.5 TO 3.0 M.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 0840 UTC WED AUG 26...
.TROPICAL STORM ISELLE...NUMEROUS MODERATE FROM 21N TO 27N
BETWEEN 118W AND 123W.
.INVEST AREA EP93...SCATTERED MODERATE TO STRONG FROM 03N TO 16N
BETWEEN 89W AND 116W.
.TROPICAL WAVE NEAR 87W...SCATTERED MODERATE TO STRONG FROM 02N
TO 10N BETWEEN 80W AND 89W.
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH EXTENDS FROM 09N84W TO 07N93W TO 09N100W TO
11N115W. THE MONSOON RESUMES SW OF ISELLE NEAR 14N125W AND
CONTINUES SW BEYOND 11N140W. SCATTERED MODERATE FROM 06N TO 15N
BETWEEN 118W AND 130W...AND FROM 01N TO 12N BETWEEN 130W AND
140W.
$$
.FORECASTER RAMOS. NATIONAL HURRICANE CENTER.
NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 0600 UTC AUG 26 2026.
24 HOUR FORECAST VALID 0600 UTC AUG 27 2026.
48 HOUR FORECAST VALID 0600 UTC AUG 28 2026.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST
.LOW 10N144W 1007 MB MOVING WNW SLOWLY. SCATTERED STRONG TO
MODERATE TSTMS WITHIN 240 NM N SEMICIRCLE OF LOW CENTER.
.24 HOUR FORECAST LOW 11N147W 1009 MB.
.48 HOUR FORECAST LOW 12N147W 1009 MB.
.LOW 16N170W 1009 MB MOVING W 10 KT. SEAS 2.5 TO 3 M WITHIN 150 NM
NE QUADRANT FROM LOW CENTER. SCATTERED STRONG TO MODERATE TSTMS
WITHIN 120 NM N SEMICIRCLE OF LOW CENTER.
.24 HOUR FORECAST LOW WEAKENING INTO TROUGH FROM 18N174W TO
10N179W. SEAS 2.5 M OR LOWER.
.48 HOUR FORECAST TROUGH MOVED W OF AREA.
.TROUGH FROM 13N159W TO 11N161W TO 08N162W MOVING W 15 KT.
.24 HOUR FORECAST TROUGH FROM 13N166W TO 09N168W.
.48 HOUR FORECAST TROUGH DISSIPATED.
.TROUGH FROM 07N173W TO 05N176W MOVING W SLOWLY. SCATTERED
MODERATE TSTMS WITHIN 180 NM N OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 08N178W TO 04N179W.
.48 HOUR FORECAST TROUGH DISSIPATED.
.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.
.OTHERWISE...SEAS 2.5 M OR LESS OVER THE REMAINDER OF FORECAST
AREA.
.MONSOON TROUGH FROM 11N140W TO FIRST LOW ABOVE TO 08N151W TO
09N154W TO 09N157W.
.SCATTERED STRONG TO MODERATE TSTMS WITHIN 150 NM EITHER SIDE OF
A LINE FROM 07N141W TO 01N152W...AND WITHIN 90 NM OF POINT
05N156W.
$$
.FORECASTER BLOOD. HONOLULU HI.=