000
AXPZ20 KNHC 201508
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC FRI JUN 20 2008

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN
FROM THE EQUATOR TO 32N...EAST OF 140W. 

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC.

...TROPICAL WAVES...
TROPICAL WAVE FROM 7N TO 15N ALONG 102W MOVING W 10-15 KT. 
SCATTERED MODERATE CONVECTION FROM 8N-10N BETWEEN 101W-103W.
OTHERWISE ISOLATED SHOWERS ALONG THE WAVE.

...ITCZ...
INTERTROPICAL CONVERGENCE ZONE 5N77W 11N100W 12N110W 6N140W. 
SCATTERED MODERATE ISOLATED STRONG CONVECTION WITHIN 150 NM S OF 
OF AXIS FROM 88W-99W. SCATTERED MODERATE TO STRONG WITHIN 180 NM 
S OF AXIS FROM 112W-124W.

...DISCUSSION...
WEAK MID/UPPER LEVEL TROUGH EXTENDS FROM 30N134W TO 23N135W TO 
18N140W. NO SIGNIFICANT WEATHER ASSOCIATED WITH THE TROUGH WITH 
DRY AIR AT THE MID/UPPER LEVEL OF THE ATMOSPHERE N OF 15N W OF 
130W. UPPER LEVEL RIDGE WITH AXIS FROM SW TEXAS TO AN 
ANTICYCLONIC CIRCULATION OVER NW MEXICO NEAR 28N118W RIDGE 
CONTINUES TO ANOTHER ANTICYCLONIC CIRCULATION OVER THE PACIFIC 
NEAR 18N121W. SW UPPER LEVEL WINDS AROUND THE ANTICYCLONIC 
CIRCULATION DOMINATE THE AREA N OF 14N W OF 120W. UPPER LEVEL
DIFFLUENT FLOW S OF THE RIDGE IS ENHANCING CONVECTIVE ACTIVITY 
ALONG THE ITCZ BETWEEN 110W-120W. UPPER LEVEL TROUGH EXTENDS
FROM THE GULF OF MEXICO ACROSS S CENTRAL MEXICO TO 18N111W. 
UPPER LEVEL DIFFLUENT FLOW ASSOCIATED WITH AN ANTICYCLONIC 
CIRCULATION OVER HONDURAS IS HELPING TO MAINTAIN STRONG TSTMS
JUST OFF THE COAST FROM 10N-13N BETWEEN 88W-91W.

A 1011 MB SURFACE LOW IS ANALYZED ALONG THE ITCZ NEAR 12N111W.
MODERATE TO STRONG CONVECTION IS WITHIN 90 NM W QUADRANT OF THE 
LOW. OTHERWISE BROAD HIGH PRES DOMINATES THE SURFACE PATTERN N 
OF 14N W OF 109W. TYPICAL BROKEN/OVERCAST STRATOCUMULUS CLOUDS 
COVER THE AREA N OF 15NW OF 120W.

$$
DGS