Area Forecast Discussion
Issued by NWS San Juan, PR

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FXCA62 TJSJ 270140 AAA
AFDSJU

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE SAN JUAN PR
940 PM AST MON JAN 26 2015

.SYNOPSIS...UPPER LEVEL RIDGE WILL WEAKEN TUE NIGHT THROUGH FRI AS
DEEPENING POLAR TROUGH OVR ERN NOAM TRANSLATES EAST. TROUGH
WEAKENS AND BEGINS TO LIFT OUT DURING THE WEEKEND WITH RIDGING
BUILDING IN EARLY NEXT WEEK.

&&

.DISCUSSION...DEEP MOISTURE WILL CONTINUE TO ADVECT NNW OVERNIGHT
ON SSE FLOW WITH ISOLD-SCT SHOWERS MAINLY OVER SW PR AND MONA
PASSAGE. ACTIVITY RE-DEVELOPS DURING TUE AFTERNOON WITH SCT
ACTIVITY CONCENTRATING OVER NW PR. DRYING TAKES PLACE TUE NIGHT
THROUGH WED. HEIGHT FALLS WED NIGHT THROUGH FRI WILL PROMOTE
MOISTURE TRANSPORT AND WEAKENING OF THE SUBSIDENCE INVERSION WITH
DEEP CONVECTION LIKELY THU AND FRI OVR WRN PR. GRADUAL DRYING
TAKES PLACE EARLY NEXT WEEK AS TROF LIFTS OUT AND SFC TO UPPER
LEVEL RIDGING BEGINS TO BUILD IN FROM THE WEST.

&&

.AVIATION...MVFR CIGS AT JBQ AND JMZ TUE AFTERNOON IN SHRA.
OTHERWISE...VFR AT ALL OTHER TAF SITES.

&&

.MARINE...SEAS 3-5 FT AND WINDS MAINLY BELOW 17 KT

&&

.PRELIMINARY POINT TEMPS/POPS...
SJU  74  87  74  86 /  10  20  20  20
STT  75  83  75  84 /  10  20  20  30

&&

.SJU WATCHES/WARNINGS/ADVISORIES...
PR...NONE.
VI...NONE.
COASTAL WATERS...NONE.
&&

$$

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