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Date: Thu, 13 Jan 2005 03:09:14 -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 130909
TWDEP

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC THU JAN 13 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...
INTERTROPICAL CONVERGENCE ZONE AXIS IS ALONG LINE 5N80W 6N90W
6N100W 4N112W 7N130W 6N140W. SCATTERED MODERATE CONVECTION
WITHIN 20 NM OF A LINE FROM 5N123W TO 8N133W TO
7N137W..OTHERWISE NO SIGNIFICANT CONVECTION.

..DISCUSSION...

.W OF 110W...
NEGATIVELY TILTED UPPER TROUGH MOVING INTO THE EXTREME NW CORNER
OF AREA TONIGHT. 100 KT JET LIFTING NE AHEAD OF TROUGH AXIS
SPREADING MULTILAYERED CLOUDINESS BETWEEN 120W AND 140W.  A
NARROW UPPER RIDGE IS NOTED AHEAD OF THE TROUGH WITH AXIS ALONG
130W. STRONG SPEED CONVERGENCE S OF 20N BETWEEN 110W AND 120W IS
PRODUCING DRY SUBSIDING AIR. AT THE SURFACE A COLD FRONT WAS
WEAKENING ALONG 135W AS IT MOVED SLOWLY EASTWARD. THE ONLY
CONVECTION NEAR THE ITCZ IS LOCATED BETWEEN 124W AND 138W.

.E OF 110W...

AN UPPER TROUGH EXTENDS FROM EXTREME SOUTHERN MEXICO SW TO
5N110W. THE TROUGH IS PART OF A MUCH LARGE LONG WAVE TROUGH OVER
THE CENTRAL US. A STRONG 140 KT JET WAS DIVING SE OVER NORTHERN
MEXICO WHICH SHOULD SERVE TO SHARPEN THE UPPER TROUGH OVER THE W
GULF OF MEXICO IN THE NEXT 24 HR. SPEED CONVERGENCE CONTINUES E
OF 110W AND THE WATER VAPOR IMAGERY SHOWS VERY DRY SUBSIDING AIR
THROUGHOUT THIS REGION. A WEAK SWLY JET (50 KT) IS LOCATED OVER
THE EXTREME SE PORTION OF THE AREA CROSSING OVER PANAMA. THE
STRONG SUBSIDENCE AREAS ARE AFFECTIVELY SHUTTING DOWN THE
CONVECTION ON THE ITCZ E OF 110W.

$$
RRG

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