000
AXPZ20 KNHC 162203
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC FRI MAY 16 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 2130 UTC.

...ITCZ...

06N77W 05N81W 10N98W 09N107W 10N114W 09N119W 05N134W 04N140W. 
SCATTERED STRONG SHOWERS AND THUNDERSTORMS WITHIN A 15 TO 30 NM 
RADIUS OF 11N94W...07N123W...AND 08N125W. SCATTERED MODERATE 
SHOWERS TO ISOLATED STRONG THUNDERSTORMS WITHIN 60 TO 90 NM ON 
EITHER SIDE OF 12N102W 12N110W 10N119W 05N128W 05N134W. WARMING 
CLOUD TOP TEMPERATURES AND DISSIPATING CONVECTIVE PRECIPITATION
FROM 04N TO 13N EAST OF 93W.

...DISCUSSION...

A MIDDLE TO UPPER LEVEL TROUGH EXTENDS FROM A NORTHERN MEXICO 
CYCLONIC CIRCULATION CENTER NEAR 30N107W TO 20N109W IN THE 
EASTERN PACIFIC OCEAN JUST WEST OF THE MEXICO COAST. MIDDLE TO 
UPPER LEVEL DRY AIR/SUBSIDENCE IS NORTH AND EAST OF 20N106W
20N118W BEYOND 32N128W. 

A MIDDLE TO UPPER LEVEL TROUGH EXTENDS FROM A 24N137W CYCLONIC 
CIRCULATION CENTER TO 18N138W BEYOND 16N142W.

BROAD UPPER LEVEL ANTICYCLONIC WIND FLOW COVERS THE AREA NORTH 
OF 20N EAST OF 140W. SOME OF THE FLOW TO THE EAST OF THE 24N137W
16N142W TROUGH IS BEING PUSHED TO THE NORTH INTO THE AREA NORTH 
OF 20N EAST OF 140W.

AN UPPER LEVEL RIDGE EXTENDS FROM THE EASTERN PACIFIC OCEAN NEAR 
14N93W NORTHEASTWARD ACROSS CENTRAL AMERICA BEYOND THE 
NORTHWESTERN CORNER OF THE CARIBBEAN SEA.

ONE SURFACE TROUGH IS ALONG 13N101W 09N105W 05N106W.
SCATTERED MODERATE SHOWERS TO ISOLATED STRONG THUNDERSTORMS
ASSOCIATED WITH THE ITCZ ARE NEAR THE TROUGH.

A SECOND SURFACE TROUGH IS ALONG 11N120W 08N122W 05N123W.
STRONG SHOWERS AND THUNDERSTORMS ARE WITHIN A 30 NM RADIUS
OF 07N123W AND 08N125W.

$$
MT