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000
AXPZ20 KNHC 210911
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC TUE OCT 21 2014

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 0900 UTC.


...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

MONSOON TROUGH FROM 8N78W TO LOW PRES NEAR 8N87W 1007 MB TO LOW PRES NEAR 16N102W 1006 MB TO 11N110W TO 11N133W. ITCZ FROM 11N133W TO 8N140W. SCATTERED MODERATE ISOLATED STRONG CONVECTION WITHIN 110 NM EITHER SIDE OF AXIS FROM 83W-88W.


...DISCUSSION...

AN UPPER LEVEL RIDGE IS OVER THE FAR NW CORNER OF THE DISCUSSION AREA WITH AXIS FROM 32N1330W TO 28N140W. DOWNSTREAM UPPER LEVEL TROUGH EXTENDS FROM 32N122W TO 25N135W. A 75-90 KT JETSTREAM ON THE SE SIDE OF THE TROUGH FROM 24N128W TO 29N119W. SCATTERED HIGH CLOUDS WITH THE JETSTREAM...OTHERWISE MODERATE TO STRONG SUBSIDENCE WITH DRY AND STABLE AIR AT THE MIDDLE AND UPPER LEVELS IS N OF 19N W OF 105W. AN UPPER LEVEL ANTICYCLONIC CIRCULATION IS CENTERED NEAR 8N121W WITH RIDGE TO NW MEXICO.

LARGE NW SWELL NW OF A LINE FROM 30N118W TO 14N140W IS SWEEPING ACROSS NW PORTION OF THE FORECAST AREA WITH SEAS 9-15 FT. SEA HEIGHTS WILL GRADUALLY SUBSIDE THROUGH WED AS THE SWELL MOVES FURTHER SE AWAY FROM ITS SOURCE...COVERING AN AREA N OF 10N W OF 110W WED EVENING WITH MAX SEAS TO 9 FT.

$$ DGS

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