

by ims1.ust.hk (iPlanet Messaging Server 5.2 Patch 1 (built Aug 19 2002))
with ESMTPS id <[email-masked]> for alau@ims-ms-daemon
(ORCPT [email-masked]); Sat, 29 Jan 2005 17:39:33 +0800 (CST)
Received: from vacuum.cso.uiuc.edu (vacuum.cso.uiuc.edu [128.174.5.113])
by mx2.ust.hk (8.12.11/8.12.11) with ESMTP id j0T9dSsG098034	for
<[email-masked]>; Sat, 29 Jan 2005 17:39:29 +0800 (HKT)
Received: from vacuum.cso.uiuc.edu (vacuum.cso.uiuc.edu [128.174.5.113])
by vacuum.cso.uiuc.edu (8.12.11/8.12.11) with ESMTP id j0T6dKaJ088540; Sat,
29 Jan 2005 03:20:06 -0600
Received: from LISTSERV.UIUC.EDU by LISTSERV.UIUC.EDU
(LISTSERV-TCP/IP release          1.8e)
with spool id 459720 for [email-masked]; Sat,
29 Jan 2005 03:20:06 -0600
Received: from delyte.lib.siu.edu (delyte.lib.siu.edu [131.230.73.222])
by          vacuum.cso.uiuc.edu (8.12.11/8.12.11) with ESMTP id j0T9K5Hf034080
for <[email-masked]>; Sat, 29 Jan 2005 03:20:05 -0600
Received: from delyte.lib.siu.edu (localhost [127.0.0.1])
by delyte.lib.siu.edu          (8.13.3/8.12.11) with ESMTP id j0T9Jiv8004758
for          <[email-masked]>; Sat,
29 Jan 2005 03:19:44 -0600 (CST)
Received: (from ldm@localhost) by delyte.lib.siu.edu (8.13.3/8.12.11/Submit)
id          j0T9Ji4K004757 for [email-masked]; Sat,
29 Jan 2005 03:19:44 -0600 (CST)
Date: Sat, 29 Jan 2005 03:19:44 -0600
From: SIU Weather Processor <[email-masked]>
Subject: Pacific-EN: Tropical Weather Discussion
Sender: WX-TROPL Tropical Storm and Hurricane WX products
<[email-masked]>
To: [email-masked]
Reply-to: [email-masked]
Message-id: <[email-masked]>
Precedence: list
X-LibAffairs-MailScanner: Found to be clean
X-MailScanner-From: [email-masked]
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 290919
TWDEP

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SAT JAN 29 2005

TROPICAL WEATHER DISCUSSION FOR EASTERN PACIFIC OCEAN FROM
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...
INTERTROPICAL CONVERGENCE ZONE AXIS ALONG 6N77W 5N91W 6N108W
4N119W 6N140W. ISOLATED MODERATE CONVECTION NEAR 6N78W 4N78W
3N80W 5N88W AND 11N125W.

..DISCUSSION...
W OF 110W
A STRONG UPPER SHORTWAVE TROUGH HAS MOVED INLAND OVER S CA WITH
A TROUGH AXIS EXTENDING BACK TO 20N137W. A WEAK VORTICITY MAX
WAS LOCATED IN THE TAIL END OF THE TROUGH NEAR 26N132W MOVING E
20 KT. A WEAKENING SURFACE FRONT ASSOCIATED WITH THE UPPER
TROUGH WAS LOCATED FROM 30N117W TO 22N140W. A 120 KT JET WAS
LOCATED ALONG 30N E OF 120W MOVING ACROSS MEXICO AHEAD OF THE
UPPER SHORTWAVE. A WEAK SEGMENT OF THE JET EXTENDS FROM 12N137W
TO 25N120W AND IS DRAWING MOISTURE FROM THE EQUATORIAL AREA IN
THE FORM OF HIGH CLOUDINESS. AN AREA OF STRONG SUBSIDENCE IS
LOCATED BETWEEN 135W AND 140W FROM 10N TO 16N WHERE SPEED
CONVERGENCE IS STABILIZING THE ATMOSPHERE.

A LARGE UPPER ANTICYCLONE WAS LOCATED NW OF THE AREA FOLLOWING
THE SHORTWAVE TROUGH. THIS SYSTEM SUPPORTS A SURFACE HIGH
COVERING THE AREA N OF THE FRONT.

THE NEXT SHORTWAVE TROUGH IS LOCATED W OF THE AREA ALONG 160W
AND WILL LIKELY MOVE NE AND OVER THE BLOCKING UPPER RIDGE. SOME
HIGH CLOUDINESS IS SPILLING INTO THE RIDGE TO 140W AS A STRONG
150 KT JET FOLLOWING THE SHORTWAVE NOSES IN UNDER THE UPPER
RIDGE.

E OF 110W
A WEAK UPPER TROUGH AXIS IS LOCATED NEAR SW MEXICO NEAR 14N98W
AND IS EXTENDS SW TO NEAR 5N108W. THE TROUGH IS STATIONARY AND
IS DIVERTING THE UPPER WINDS TO THE N AND S OF THE AXIS. THIS IS
PRODUCING AN AREA OF SUBSIDENCE S OF 10N E OF 110W TO OVER
CENTRAL AMERICA. ANTICYCLONIC FLOW ALOFT IS PRODUCING THE
SUBSIDENCE AND EFFECTIVELY SHUTTING DOWN CONVECTION ON THE ITCZ
W OF 90W. SOME ISOLATED CONVECTION IS NOTED E OF 90W TO THE
COLOMBIAN COAST.

BRISK NE WINDS ARE BLOWING ACROSS CENTRAL AMERICA AND IR IMAGERY
SHOWS SCATTERED CLOUDINESS MOVING INLAND FROM BELIZE SOUTH TO
PANAMA. THE NE WINDS ARE BLOWING THROUGH COSTA RICA AND PANAMA
INTO THE PACIFIC WHERE THEY INTERACT WITH THE ITCZ AND ARE
PRODUCING THE ISOLATED CONVECTION MENTIONED ABOVE. CLOUDS CAN BE
SEEN ALONG THE MOUNTAINS ALONG THE WESTERN SECTIONS OF CENTRAL
AMERICA. OTHER CLOUDS ARE MOVING OFFSHORE FROM LOWER MEXICO OUT
OVER THE PACIFIC TO NEAR 15N102W WHERE THEY DISSIPATE.

$$
RRG

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
To unsubscribe from WX-TROPL send e-mail to [email-masked] with
"unsub wx-tropl" in the body of your message. For help with WX-TROPL
write to [email-masked] or see http://wxlist.5280tech.com. For more
information on tropical weather products, see the NHC Homepage
at http://www.nhc.noaa.gov.