Tropical Weather Discussion
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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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