JTWC changing it's tropical disturbance classification...

[Typhoon_Willie]

I have tried to look around and see if there was a thread on this already but could not find one so here goes.
Here is the text from the JTWC website.

Starting on 01 June 2011, the Joint Typhoon Warning Center will change its
classification of tropical disturbances listed in the Significant Tropical Weather
Advisories from “Poor”, “Fair”, or “Good” to “Low,” “Medium,” or “High” based on the
formation potential of a tropical disturbance to develop into a significant tropical cyclone
within the next 24 hours.
This change allows the Joint Typhoon Warning Center to describe the formation
potential in more understandable terms. The formal definitions are:
(1) “Low” formation potential describes an area that is being monitored for
development, but is unlikely to develop within the next 24 hours.
(2) “Medium” formation potential describes an area that is being monitored for
development and has an elevated potential to develop, but development will
likely occur beyond 24 hours.
(3) “High” formation potential describes an area that is being monitored for
development and is either expected to develop within 24 hours or
development has already started, but warning criteria have not yet been met.
Like areas previously assessed as “Good”, all areas designated as “High” will
be accompanied by a Tropical Cyclone Formation Alert.
This change reflects feedback from many of our customers indicating that the previous
terminology was both confusing and was not consistent with the descriptors used by the
U. S. National Weather Service.

[RL3AO]

Makes sense.

[Chacor]

Pretty much just to bring the JTWC in line with the NHC.

[RobWESTPACWX]

Coming from someone that has to explain the difference between poor, fair and good almost on a daily basis during tropical season I think this is a great decision coming out of Pearl Harbor.

I think the biggest problem is many people get confused thinking good is a good thing, I mean if you were on a boat near a "good" are what would your first thoughts be?

So love the change from here.

[Iune]

For how long has the JTWC been using the "Poor, Fair, Good" system?

[Typhoon_Willie]

They have been using the "poor", "fair" and "good" terminology for many years.

[ejvill]

thank you for sharing this info..