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Date: Sat, 08 Jan 2005 03:14:17 -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 080913
TWDEP

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SAT JAN 08 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...

ITCZ AXIS IS CENTERED ALONG 3N78W 6N108W 7N124W 8N140W.
SCATTERED MODERATE CONVECTION WITHIN 20 NM OF THE ITCZ FROM
8N131W   TO 9N136W.

..DISCUSSION...

W OF 110W...
A LARGE UPPER LOW WAS NEARLY STATIONARY OFF THE OREGON COAST
TONIGHT AND WAS INDIRECTLY INFLUENCING OUR REGION BY SENDING A
COLD FRONT S OF 30N. THE FRONT EXTENDED FROM 30N128W TO 25N126W
THEN BECAME STATIONARY BACK TO 28N132W THEN WAS RECEDING
NORTHWARD AS A WARM FROM TO 30N134W AHEAD OF A LOW PRESSURE
CENTER 1008 MB NEAR 32N136W.

A WEAK SHORTWAVE TROUGH WAS ALONG 150W MOVING E 35 KT. A
SUBTROPIC JET WAS ALONG 20N TO 25N W OF THE TROUGH THEN CURVES
ENE TO UPPER BAJA. WIND SPEEDS IN THE JET ARE 115 KT TO 125 KT
WITH A BAND OF MULTILAYERED CIRRUS FROM 25N140W TO N BAJA. AN
ADDITIONAL AREA OF HIGH CLOUDINESS WAS LOCATED BETWEEN 125W AND
140W N OF 8N TO 25N AHEAD OF THE SHORTWAVE. A WEAK UPPER TROUGH
WAS EVIDENT IN THE WATER VAPOR IMAGERY FROM 10N110W TO 20N120W.
THE TROUGH IS IN A VERY DRY REGION AND HAD NO CONVECTION
ASSOCIATED WITH IT.

E OF 110W...
WEAK UPPER TROUGHING EXTENDS FROM 10N110W TO CENTRAL AMERICA BUT
BE MORE A RESULT OF A NARROW RIDGE FROM YUCATAN CHANNEL SW TO
SOUTHERN MEXICO. THE RIDGE IS STATIONARY AS WELL AS THE WEAK
UPPER TROUGH. WATER VAPOR IMAGERY SHOWS THE ENTIRE REGION VERY
DRY IN THE MID AND UPPER LAYERS OF THE ATMOSPHERE..CONSEQUENTLY
ISOLATED CONVECTION ALONG THE ITCZ MAINLY E OF 90W IS HAVING A
HARD TIME MAINTAINING ITSELF.

$$
RRG

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