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Date: Sun, 09 Jan 2005 03:24:49 -0600
From: SIU Weather Processor <[email-masked]>
Subject: Pacific-EN: Tropical Weather Discussion
Sender: WX-TROPL Tropical Storm and Hurricane WX products
<[email-masked]>
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X-Perlmx-Spam: Gauge=XXXIIIIIIII, Probability=38%,
Report='HASHBUSTER_BLOCK_V2 3.4, LINES_OF_YELLING_3 0.671,
__HASHBUSTER_BLOCK_V2_1 0, __HAS_MSGID 0, __LINES_OF_YELLING 0, __SANE_MSGID 0'

AXPZ20 KNHC 090924
TWDEP

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SUN JAN 09 2005

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0845 UTC.

..ITCZ...
AXIS ALONG 5N78W 3N98W 5N109W 10N134W 10N140W. SCATTERED
MODERATE CONVECTION BETWEEN 4N AND 7N E OF 85W. ISOLATED
MODERATE NEAR 6N116W. CLUSTER OF MODERATE NEAR 9N127W.

..DISCUSSION...
W OF 110W...
A LONGWAVE TROUGH CONTINUES TO DOMINATE THE REGION WITH THE MAIN
COLD CORE DRIFTING N ALONG THE PAC NW COAST. A MODERATE
SHORTWAVE TROUGH WAS ALONG 136W S OF 30N MOVING ENE 35 KT. A
LARGE AREA OF MULTILAYERED CLOUDS COVERS THE AREA E OF THE
TROUGH TO THE BAJA COAST. THE CLOUDINESS IS ASSOCIATED WITH A
125 KT JET EAST OF THE TROUGH TO NORTHERN BAJA.

AT THE SURFACE AS WEAK FRONTAL BOUNDARY JUST ENTERS THE AREA
NEAR 30N130W THEN CONTINUES WSW TO 28N140W THEN TO A WEAK LOW
PRES CENTER 1010 MB LOCATED JUST W OF THE AREA NEAR 28N144W. THE
LOW IS TRACKING SSE 20 KT. A COLD FRONT EXTENDS FROM THE LOW
ALONG 142W THEN BACK TO THE SW. A WEAK SURFACE HIGH 1018 MB WAS
LOCATED NEAR 26N120W AND WAS STATIONARY.

E OF 110W...
AN AREA OF UPPER LEVEL CONVERGENCE COVERS THE ENTIRE AREA. WATER
VAPORT IMAGERY SHOWS THE RESULT OF THIS CONVERGENCE WITH VERY
DRY SUBSIDENCE THROUGHOUT. MOST CONVECTION ALONG THE ITCZ IS
DISSIPATED BY THE VERY DRY ATMOSPHERE. SOME ISOLATED CONVECTION
IS TAKING PLACE ALONG 5N E OF 90W WHERE UPPER WINDS INCREASE
PRODUCING SHEAR AND A SLIGHTLY MORE FAVORABLE ENVIRONMENT.

AT THE SURFACE THE ITCZ LIES ALONG 5N E OF 90W AND IS PROVIDING
LOW LEVEL CONVERGENCE..ENOUGH FOR PRODUCING ISOLATED CONVECTION.

N TO NE WINDS OF 20 TO 25 KT ARE BLOWING THROUGH THE GULF OF
TEHAUNTEPEC AT 05Z AND ARE FORECAST TO INCREASE TO MINIMAL GALE
CONDITION WITHIN THE NEXT FEW HOURS..THEREFORE A GALE WARNING IS
IS POSTED.

$$
RRG

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