Skip Navigation Links
NOAA NOAA United States Department of Commerce

Parts of the U.S. Government are closed. However, because the information this site provides is necessary to protect life and property, it will be updated and maintained during the Federal Government shutdown. For critical weather information, please visit To learn more, see

Post-Tropical Cyclone JOHN


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.


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