324
axpz20 knhc 012212
twdep
Tropical weather discussion
NWS TPC/National Hurricane Center Miami FL
2205 UTC Mon Dec 01 2008
Tropical weather discussion for the eastern Pacific Ocean
from the Equator to 32n...east of 140w.
Based on 1800 UTC surface analysis and satellite imagery through
2100 UTC.
...ITCZ...
intertropical convergence zone along 07n80w 08n90w 07n140w.
Scattered moderate convection within 90 nm N of axis W of 134w.
...Discussion...
broad upper level ridge covers wrn portion of basin W of 120w
advecting moisture into basin N of 08n with ITCZ using it for
scattered deep convection W of 134w. Large amplitude upper
level trough cover remainder E pac with moderate to strong
subsidence and very dry air mass limiting cloud vertical
development throughout.
At the surface...
high pres center at 30n135w has ridge extend se to 13n110w
maintaining strong trade winds from 10n-20n W of 120w. High
pres center over Gulf of Mexico forces cold air across isthmus
and Gulf of Tehuantepec starting to be felt tonight and reaching
gale force Tue for short period. High pres over Gulf of Mexico
moves E quickly and gale event dies by Tue night...although
strong northerlies linger till Wed.
As high pres enters wrn Caribbean...Gulf of papagayo start
feeling NE winds spilling across mountain passes and reach short
of gale force by Wed.
$$
Wally Barnes
324
axpz20 knhc 012212
twdep
Tropical weather discussion
NWS TPC/National Hurricane Center Miami FL
2205 UTC Mon Dec 01 2008
Tropical weather discussion for the eastern Pacific Ocean
from the Equator to 32n...east of 140w.
Based on 1800 UTC surface analysis and satellite imagery through
2100 UTC.
...ITCZ...
intertropical convergence zone along 07n80w 08n90w 07n140w.
Scattered moderate convection within 90 nm N of axis W of 134w.
...Discussion...
broad upper level ridge covers wrn portion of basin W of 120w
advecting moisture into basin N of 08n with ITCZ using it for
scattered deep convection W of 134w. Large amplitude upper
level trough cover remainder E pac with moderate to strong
subsidence and very dry air mass limiting cloud vertical
development throughout.
At the surface...
high pres center at 30n135w has ridge extend se to 13n110w
maintaining strong trade winds from 10n-20n W of 120w. High
pres center over Gulf of Mexico forces cold air across isthmus
and Gulf of Tehuantepec starting to be felt tonight and reaching
gale force Tue for short period. High pres over Gulf of Mexico
moves E quickly and gale event dies by Tue night...although
strong northerlies linger till Wed.
As high pres enters wrn Caribbean...Gulf of papagayo start
feeling NE winds spilling across mountain passes and reach short
of gale force by Wed.
$$
Wally Barnes
