Storm Hunter
(Veteran Storm Chaser)
Fri May 12 2006 09:36 PM
All Quiet on the Western Front

looks like epac is about to get a going!



TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC FRI MAY 12 2006


A 1008 MB SURFACE LOW MOVING W ABOUT 10-15 KT IS ANALYZED NEAR
8N97W. SCATTERED STRONG CONVECTION IN ASSOCIATION WITH THE LOW
IS NOTED FROM 5N-11N BETWEEN 97W-100W.


Storm Hunter
(Veteran Storm Chaser)
Sat May 13 2006 11:16 AM
Re: All Quiet on the Western Front

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SAT MAY 13 2006



NUMEROUS STRONG CONVECTION WITHIN 240 NM OF 8N94W ASSOCIATED
WITH A LOW PRES CENTER NEAR 9N96W.


A WEAK LOW PRES CENTER 1007 MB WAS NEAR 9N96W MOVING SLOWLY WWD.
QUIKSCAT SHOWS WINDS TO 25 KT WITHIN 300 NM OF THE CENTER. THERE
APPEARS TO BE AN INCREASE IN CONVECTION DURING THE PAST 24 HRS
MAINLY E OF THE CENTER. THE ANTICYCLONIC OUTFLOW OVER THE SYSTEM
HAS BECOME BETTER DURING THE NIGHT.

http://manati.orbit.nesdis.noaa.gov/dataimages21/cur_hires/zooms/WMBds65.png


Margie
(Senior Storm Chaser)
Sat May 13 2006 09:41 PM
Hey - wake up! Check out the ATL!

I think the first tropical wave of the season deserves a new thread, don't you?

http://www.ssd.noaa.gov/goes/east/catl/loop-vis.html


sara33
(Weather Guru)
Sat May 13 2006 10:31 PM
Re: Hey - wake up! Check out the ATL!

Hi guys,
Is it normal for a wave this time of year?

Thanks,
Christine


Spoken
(Weather Hobbyist)
Sat May 13 2006 11:03 PM
Re: All Quiet on the Western Front

Quote:

A WEAK LOW PRES CENTER 1007 MB WAS NEAR 9N96W MOVING SLOWLY WWD.


Thanks. It seems WWD means Wind Wave Direction, or the direction in which (surface?) wind and waves are moving, as reported for example from a buoy like that displayed at http://www.ndbc.noaa.gov/station_page.php?station=42035. It seems WWD is recorded as being from 0 - 360 degrees and is reported as a compass point, e.g., SSW.

By comparing the movement of clouds visible in that area with the little red flags shown when the "HDW-low" box is clicked at http://www.ssd.noaa.gov/goes/east/watl/loop-vis.html, the buoys (and/or vessels I suppose) nearest that latitude and longitude seem to be indicating (??) that the low pressure is rotating in a counter-clockwise pattern. Beyond that I don't see much else to help me understand what "MOVING SLOWLY WWD" might be saying. Again, thanks.


CaneTrackerInSoFl
(Storm Tracker)
Sun May 14 2006 12:15 AM
Re: All Quiet on the Western Front

WWD means westward....

Spoken
(Weather Hobbyist)
Sun May 14 2006 01:59 AM
Re: All Quiet on the Western Front

Quote:

WWD means westward....


Golly, there's even more hits for WWD, weather and westward! And yes forecasters definately use it that way.

Clearly I should have paged further forward through the search results. But at least I found out where the little red flags come from (or at least perhaps one of them - most seem to be moving and some seem to be missing). Thanks!


Spoken
(Weather Hobbyist)
Sun May 14 2006 02:47 AM
Re: Hey - wake up! Check out the ATL!

Thanks for the wake up call! So... more or less on June 1, wind currents change to allow tropical waves to move further WWD. Because this one, or at least the convection associated with it, seems about to start moving northeast.

http://www.ssd.noaa.gov/goes/east/catl/loop-avn.html

In addition to water tempaeratures is that why the Atlantic hurricane season officially begins in June?


Margie
(Senior Storm Chaser)
Sun May 14 2006 02:01 PM
Re: All Quiet on the Western Front

The eastpac TWD have been kind of droll this weekend, with the discussion first separating the area to the east and west of a given longitude, then to the north and south of a given latitude, now this morning's separated into upper level and surface features.

* * * * * * *

We have 90E. This morning's TWD was right on the money.

I started a new thread.



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