Subtropical Storm Andrea Report=Peak wind 50kts

[cycloneye]

Subtropical Storm Andrea report on pdf



I didn't see a thread about the subtropical storm Andrea report so here it is.

Any comments are welcomed.

[Andrew92]

Luis, I actually posted this in the Barry thread, thinking that might be a good thread to have the 2007 Atlantic Tropical Cyclone Report thread. Should this become the report thread for the year or should we wait a while for that?

-Andrew92

[cycloneye]

Luis, I actually posted this in the Barry thread, thinking that might be a good thread to have the 2007 Atlantic Tropical Cyclone Report thread. Should this become the report thread for the year or should we wait a while for that?

-Andrew92

I think we can continue to post the reports individually and then at the end of the season post a complete summary of all the reports.

[cycloneye]

Andrew92,thinking a little more about the reports being posted,if the season turns out to be a normal one with not a lot of storms,then we can post them individually.But if the season is very active,then a main reports thread is needed to not have many threads posted of all the reports.What do you think of this idea?

[Andrew92]

Good idea Luis.

[CrazyC83]

Notice that it peaked at hurricane strength before becoming subtropical...if it became subtropical with hurricane winds, what would it have been called - Hurricane Andrea, Subtropical Hurricane Andrea or Subtropical Storm Andrea still?

[Buck]

Interesting how much stronger it was as an extratropical storm before it was classified...

[Derek Ortt]

I believe had it have been subtropical at hurricane intensity, it would have been called a hurricane

Lili and Hurricane 8 of 1991 were classified as hurricanes when winds reached hurricane force, even though they were subtropical

[Chacor]

I'm pretty sure otherwise...

NHC glossary:
Subtropical Storm:
A subtropical cyclone in which the maximum sustained surface wind speed (using the U.S. 1-minute average) is 34 kt (39 mph or 63 km/hr) or more.

This suggests that >64 kt subtropical cyclones are still subtropical storms.

[WindRunner]

I'm pretty sure otherwise...

NHC glossary:
Subtropical Storm:
A subtropical cyclone in which the maximum sustained surface wind speed (using the U.S. 1-minute average) is 34 kt (39 mph or 63 km/hr) or more.

This suggests that >64 kt subtropical cyclones are still subtropical storms.

Operationally, this is never practiced. Anything over 64kts is termed a hurricane, as they seem to assume that any tropical characteristics that it had in its weaker subtropical stages have started to take over to produce the hurricane force winds in a tropical fashion, even though this is not always true.

[Chacor]

I'm pretty sure otherwise...

NHC glossary:
Subtropical Storm:
A subtropical cyclone in which the maximum sustained surface wind speed (using the U.S. 1-minute average) is 34 kt (39 mph or 63 km/hr) or more.

This suggests that >64 kt subtropical cyclones are still subtropical storms.

Operationally, this is never practiced. Anything over 64kts is termed a hurricane, as they seem to assume that any tropical characteristics that it had in its weaker subtropical stages have started to take over to produce the hurricane force winds in a tropical fashion, even though this is not always true.

I'm convinced that there has been at least one subtropical storm of 64 kt intensity while subtropical.

[Hurricanehink]

I'm pretty sure otherwise...

NHC glossary:
Subtropical Storm:
A subtropical cyclone in which the maximum sustained surface wind speed (using the U.S. 1-minute average) is 34 kt (39 mph or 63 km/hr) or more.

This suggests that >64 kt subtropical cyclones are still subtropical storms.

Operationally, this is never practiced. Anything over 64kts is termed a hurricane, as they seem to assume that any tropical characteristics that it had in its weaker subtropical stages have started to take over to produce the hurricane force winds in a tropical fashion, even though this is not always true.

I'm convinced that there has been at least one subtropical storm of 64 kt intensity while subtropical.

There have been two. In 1968, the 6th cyclone was called Subtrop 1, and was classified as a Subtropical Storm with hurricane force winds - http://www.aoml.noaa.gov/hrd/hurdat/easy_1961-70.htm#1968_6

In 1979, the 9th cyclone was called Subtrop 1, and was also classified as a Subtropical Storm with hurricane force winds - http://www.aoml.noaa.gov/hrd/hurdat/easy_1971-80.htm#1979_9

I believe had it have been subtropical at hurricane intensity, it would have been called a hurricane

Lili and Hurricane 8 of 1991 were classified as hurricanes when winds reached hurricane force, even though they were subtropical

Neither were subtropical upon attaining hurricane status, FWIW. Lili became a hurricane as it transitioned into a tropical cyclone - http://www.aoml.noaa.gov/hrd/hurdat/easy_1981-90.htm#1984_13, and Hurricane 8 of 1991 transitioned into a tropical storm before strengthening into a hurricane - http://www.aoml.noaa.gov/hrd/hurdat/easy_1991-00.htm#1991_8

[Derek Ortt]

the 1984 Lili report stated that it was only named because of the presence of hurricane force winds as confirmed by recon. I was wrong about 1991, just rechecked the BT. I wonder is a change in protocol occurred, but it makes sense since the storms both have advisories issued to call them hurricanes)

[Derek Ortt]

http://www.nhc.noaa.gov/archive/storm_w ... elim02.gif

the report states that Lili was named due to the hurricane force winds

[WindRunner]

However, there are some storms that magically become hurricanes at that threshold as well.

Hurricane #10, 1969 http://www.aoml.noaa.gov/hrd/hurdat/eas ... tm#1969_10

Fran, 1973 http://www.aoml.noaa.gov/hrd/hurdat/eas ... htm#1973_7

Charley, 1980 http://www.aoml.noaa.gov/hrd/hurdat/eas ... htm#1980_3


Granted, often times, especially back then, they probably wouldn't think something was tropical at the mid-latitudes until they saw telltale features such as an eye.

I think this is going to have to be addressed come reanalysis time. Obviously some inconsistencies exist in the pre-NHC era . . .