North Pacific Hurricane Force Lows
The Spring 2020 to Spring 2021 Season
What is the difference between a tropical cyclone and an Extra-Tropical Cyclone? The information to the right can help you distinguish the two.
The Spring 2020 - Spring 2021 Season
Click each individual "diamond" for more information.
Hurricane Force Low Locations and Central Pressures
See how the Spring 2020 - Spring 2021 stack up against our historical archive (Spring 2002- Spring 2020)
Left Spring 2020-Spring 2021 Right Spring 2002-Spring 2020
A Record Breaking Hurricane Force Low Pressure System
December 31st 2020
The Surface Analysis Map on the right shows the record breaking low pressure. This was the lowest extra-tropical low pressure ever recorded in the North Pacific Ocean.
The latest surface analysis can always be viewed on the Ocean Prediction Center's website.
This is the view of the low pressure center as seen by Himawari at 1800Z December 31st 2020 using "GeoColor Imagery. GeoColor Imagery is useful for us not only for the ability to know different cloud heights, but also because it can be used both during daytime and nightime hours.
If you would like to learn more about "GeoColor" Satellite Imagery, you can click here.
This is the Air Mass Imagery of the same low pressure at 1800Z December 31st, 2020. At the Ocean Prediction Center Air Mass Imagery helps us find the location of fronts over the open ocean, the heights of clouds above the surface, and a few other meteorological elements. For example, colder airmasses can be seen in the "blue" while warmer airmasses can be seen with the "green."
If you would like to learn more about Air Mass imagery, click here .
For the latest maritime forecast information, text products, and charts visit the Ocean Prediction Center's Website directly: ocean.weather.gov
