STORM2K

Do typhoons in the Pacific behave in the same way as Atlantic hurricanes?

In what way are you referring? Their mode of formation tends to be different since they frequently have their origins in the Monsoon Trough and thus can form and intensify at lower latitudes than in the Atlantic (not at all uncommon to have a typhoon below 10N). But in general, they will track similarly though long tracked straight runners tend to be more common in WPAC than the ATL since there is much less tendency towards troughing off the Asian Coast in Summer so that recurvers are more likely to occur late in the season. Also, storm frequency can remain significant into December (as the US Navy found to their grief in 1944 off the Philippines).

Steve

Typhoons tend to form from monsoonal lows. In fact that is how most tropical cyclones form from. Some Atlantic hurricanes have formed in that manner, like Wilma in 2005. Also, typhoons have more ocean and warm water space to work with, so they can get larger and stronger. Typhoons can transist into extratropical lows and affect America, like what STY Gay did in 1992 when it became an extratropical low.

Yes STY Gay did affect the US in its ET phase however, the classic example of an ex-typhoon doing that is the October 1962 Columbus Day storm in WA/OR which remains one of the most intense, if not the most intense, extratropical system to hit the lower 48. The Aleutians, of course get slammed by ex-typhoons every year. There's a difference between a storm forming from a wave that has developed from a monsoonal low and one that forms within the monsoon trough itself. For one, Coriolis is not the defining factor in development since the horizontal cyclonic shear is more than enough to offset the lack of Coriolis in low latitudes which is why development below 10N is so common in WPAC when the trough is in the low latitudes or at the far eastern extremity of the trough which is always low latitude. BTW, ET stages of hurricanes have affected Europe.

Steve

Aslkahuna wrote:Yes STY Gay did affect the US in its ET phase however, the classic example of an ex-typhoon doing that is the October 1962 Columbus Day storm in WA/OR which remains one of the most intense, if not the most intense, extratropical system to hit the lower 48. The Aleutians, of course get slammed by ex-typhoons every year. There's a difference between a storm forming from a wave that has developed from a monsoonal low and one that forms within the monsoon trough itself. For one, Coriolis is not the defining factor in development since the horizontal cyclonic shear is more than enough to offset the lack of Coriolis in low latitudes which is why development below 10N is so common in WPAC when the trough is in the low latitudes or at the far eastern extremity of the trough which is always low latitude. BTW, ET stages of hurricanes have affected Europe.

Steve

The ptarmigans must feel those ET storms every year. Hurricane Lili of 1996 hit the UK as a strong ET system.