Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

NHC

Post-Tropical Cyclone Iselle Wind Speed Probabilities

Advisory Number: 15
0300 UTC THU AUG 27 2026

000
FOPZ14 KNHC 270232
PWSEP4

POST-TROPICAL CYCLONE ISELLE WIND SPEED PROBABILITIES NUMBER 15
NWS NATIONAL HURRICANE CENTER MIAMI FL EP092026
0300 UTC THU AUG 27 2026

AT 0300Z THE CENTER OF POST-TROPICAL CYCLONE ISELLE WAS LOCATED NEAR
LATITUDE 23.0 NORTH...LONGITUDE 125.9 WEST WITH MAXIMUM SUSTAINED
WINDS NEAR 30 KTS...35 MPH...55 KM/H.

Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH)
PACIFIC DAYLIGHT TIME (PDT)...SUBTRACT 7 HOURS FROM Z TIME
HAWAIIAN STANDARD TIME (HST)...SUBTRACT 10 HOURS FROM Z TIME

WIND SPEED PROBABILITY TABLE FOR SPECIFIC LOCATIONS

CHANCES OF SUSTAINED (1-MINUTE AVERAGE) WIND SPEEDS OF AT LEAST
...34 KT (39 MPH... 63 KM/H)...
...50 KT (58 MPH... 93 KM/H)...
...64 KT (74 MPH...119 KM/H)...
FOR LOCATIONS AND TIME PERIODS DURING THE NEXT 5 DAYS

PROBABILITIES FOR LOCATIONS ARE GIVEN AS OP(CP) WHERE
OP IS THE PROBABILITY OF THE EVENT BEGINNING DURING
AN INDIVIDUAL TIME PERIOD (ONSET PROBABILITY)
(CP) IS THE PROBABILITY OF THE EVENT OCCURRING BETWEEN
00Z THU AND THE FORECAST HOUR (CUMULATIVE PROBABILITY)

PROBABILITIES ARE GIVEN IN PERCENT
X INDICATES PROBABILITIES LESS THAN 1 PERCENT
PROBABILITIES FOR 34 KT AND 50 KT ARE SHOWN AT A GIVEN LOCATION WHEN
THE 5-DAY CUMULATIVE PROBABILITY IS AT LEAST 3 PERCENT.
PROBABILITIES FOR 34...50...64 KT SHOWN WHEN THE 5-DAY
64-KT CUMULATIVE PROBABILITY IS AT LEAST 1 PERCENT.


- - - - WIND SPEED PROBABILITIES FOR SELECTED LOCATIONS - - - -

FROM FROM FROM FROM FROM FROM FROM
TIME 00Z THU 12Z THU 00Z FRI 12Z FRI 00Z SAT 00Z SUN 00Z MON
PERIODS TO TO TO TO TO TO TO
12Z THU 00Z FRI 12Z FRI 00Z SAT 00Z SUN 00Z MON 00Z TUE

FORECAST HOUR (12) (24) (36) (48) (72) (96) (120)
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
LOCATION KT

25N 130W 34 X 1( 1) 7( 8) 1( 9) X( 9) X( 9) X( 9)

$$
FORECASTER KATZ/HAGEN/PAPIN

hurricanes.gov

official website of the US Department of Commerce and the National Oceanic and Atmospheric Administration

Looking for U.S. government information and services?
Visit USA.gov