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Hurricane.com - Advisory


Expires:No;;848844
WTPZ32 KNHC 101432
TCPEP2

BULLETIN
Post-Tropical Cyclone John Advisory Number  20
NWS National Hurricane Center Miami FL       EP122018
800 AM PDT Fri Aug 10 2018

...JOHN WEAKENS TO A REMNANT LOW...
...THIS IS THE LAST ADVISORY...


SUMMARY OF 800 AM PDT...1500 UTC...INFORMATION
----------------------------------------------
LOCATION...26.8N 121.1W
ABOUT 475 MI...760 KM SSW OF SAN DIEGO CALIFORNIA
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...NW OR 310 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...1003 MB...29.62 INCHES


WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.


DISCUSSION AND OUTLOOK
----------------------
At 800 AM PDT (1500 UTC), the center of Post-Tropical Cyclone John
was located near latitude 26.8 North, longitude 121.1 West. The
post-tropical cyclone is moving toward the northwest near 10 mph (17
km/h), and this motion is expected to continue until dissipation
occurs in a couple of days.

Maximum sustained winds are near 35 mph (55 km/h) with higher gusts.
Additional weakening is anticipated.

The estimated minimum central pressure is 1003 mb (29.62 inches).


HAZARDS AFFECTING LAND
----------------------
SURF:  Swells generated by John continue to affect portions
of the Baja California peninsula and southern California. These
swells should begin to gradually subside, but could still cause
life-threatening surf and rip current conditions. Please consult
products from your local weather office.

NEXT ADVISORY
-------------
This is the last public 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, WMO header FZPN02 KWBC, and
on the web at https://ocean.weather.gov/shtml/NFDHSFEPI.shtml.


$$
Forecaster Avila



 

Expires:No;;848910
WTPZ42 KNHC 101433
TCDEP2

Post-Tropical Cyclone John Discussion Number  20
NWS National Hurricane Center Miami FL       EP122018
800 AM PDT Fri Aug 10 2018

John's convection vanished around 0430 UTC, and the cyclone now
consists of a tight swirl of low clouds moving over a 22 degree
Celsius ocean. Given the lack of convection, the system has been
classified as a remnant low with 30-kt winds in this last advisory.
The low is moving toward the northwest at 9 kt, and this general
motion will likely continue until dissipation in a couple of days.

Swells associated with the remnants of John continue to affect
portions of the coasts of the Baja California peninsula and southern
California, but will soon begin to subside. These swells could cause
life-threatening surf and rip current conditions. Please consult
products from your local weather office.

This is the last NHC advisory on John.

FORECAST POSITIONS AND MAX WINDS

INIT  10/1500Z 26.8N 121.1W   30 KT  35 MPH...POST-TROPICAL
 12H  11/0000Z 27.5N 122.5W   25 KT  30 MPH...POST-TROP/REMNT LOW
 24H  11/1200Z 28.2N 123.7W   25 KT  30 MPH...POST-TROP/REMNT LOW
 36H  12/0000Z 28.5N 124.5W   25 KT  30 MPH...POST-TROP/REMNT LOW
 48H  12/1200Z...DISSIPATED

$$
Forecaster Avila



 

    

More information

Expires:No;;848822
WTPZ22 KNHC 101432
TCMEP2

POST-TROPICAL CYCLONE JOHN FORECAST/ADVISORY NUMBER  20
NWS NATIONAL HURRICANE CENTER MIAMI FL       EP122018
1500 UTC FRI AUG 10 2018

THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

POST-TROPICAL CYCLONE CENTER LOCATED NEAR 26.8N 121.1W AT 10/1500Z
POSITION ACCURATE WITHIN  20 NM

PRESENT MOVEMENT TOWARD THE NORTHWEST OR 310 DEGREES AT   9 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1003 MB
MAX SUSTAINED WINDS  30 KT WITH GUSTS TO  40 KT.
12 FT SEAS..150NE  60SE  45SW  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 26.8N 121.1W AT 10/1500Z
AT 10/1200Z CENTER WAS LOCATED NEAR 26.5N 120.7W

FORECAST VALID 11/0000Z 27.5N 122.5W...POST-TROP/REMNT LOW
MAX WIND  25 KT...GUSTS  35 KT.

FORECAST VALID 11/1200Z 28.2N 123.7W...POST-TROP/REMNT LOW
MAX WIND  25 KT...GUSTS  35 KT.

FORECAST VALID 12/0000Z 28.5N 124.5W...POST-TROP/REMNT LOW
MAX WIND  25 KT...GUSTS  35 KT.

FORECAST VALID 12/1200Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 26.8N 121.1W

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 FZPN02 KWBC.


$$
FORECASTER AVILA




 

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