Post by Deleted on Dec 14, 2014 4:09:43 GMT -6
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
500 AM AST SUN DEC 14 2014
.SYNOPSIS...TROUGH ACROSS THE WESTERN ATLANTIC WILL CONTINUE
TO MOVE EAST WITH ASSOCIATED FRONT REACHING THE AREA ON MONDAY.
SHORT WAVE TROUGH WILL MOVE ACROSS THE EASTERN CARIBBEAN LATE
THURSDAY INTO FRIDAY. AS THE AFOREMENTIONED TROUGH MOVES AWAY
FROM THE AREA...RIDGE PATTERN WILL BUILD FROM THE WEST SATURDAY
AND SUNDAY.
&&
.DISCUSSION...MOSTLY CLEAR TO PARTLY CLOUDY SKIES PREVAILED
ACROSS THE LOCAL ISLANDS OVERNIGHT...WITH BRIEF SHOWERS OBSERVED
OVER THE EASTERN THIRD OF PUERTO RICO...THE U.S. VIRGIN ISLANDS
AND THE REGIONAL WATERS. WINDS WERE LIGHT AND VARIABLE WITH
COASTAL TEMPERATURES IN THE LOW TO MID 70S.
MOSTLY FAIR WEATHER WILL CONTINUE TO PREVAIL ACROSS THE LOCAL
ISLANDS TODAY WITH PASSING SHOWERS ACROSS WINDWARD AREAS FROM
TIME TO TIME...FOLLOWED BY SOME AFTERNOON CONVECTION ACROSS
N AND NW PUERTO RICO UNDER LIGHT WINDS AND NEAR NORMAL
PRECIPITABLE WATER.
AS DEEP TROUGH MOVES ACROSS THE WESTERN ATLANTIC...ASSOCIATED
FRONT WILL REACH THE LOCAL AREA ON MONDAY...RESULTING IN
MOISTURE ADVECTION THROUGH AT LEAST TUESDAY. THEREFORE EXPECT
THE CONTINUED TREND OF PASSING SHOWERS ACROSS THE ATLANTIC
WATERS...THE NORTHERN HALF OF PUERTO RICO...VIEQUES...CULEBRA
AND USVI WITH SHOWERS SPREADING OVER THE SOUTHERN SLOPES OF
PUERTO RICO IN THE AFTERNOON HOURS BOTH DAYS. LINGERING MOISTURE
STILL EXPECTED WEDNESDAY...WITH A SHARP DECREASE WEDNESDAY NIGHT
INTO FRIDAY. HOWEVER A SHORT WAVE TROUGH WILL MOVE ACROSS THE
AREA THURSDAY AFTERNOON INTO EARLY FRIDAY. THEREFORE UNDER THIS
PATTERN...TRADE WIND SHOWERS SHOULD PREVAIL WEDNESDAY AND EARLY
THURSDAY WITH A BETTER CHANCE OF SHOWER ACTIVITY LATE THURSDAY
INTO EARLY FRIDAY AS THE SHORT WAVE TROUGH MOVES ACROSS THE AREA.
BY FRIDAY AFTERNOON AND INTO THE UPCOMING WEEKEND FEW PASSING
SHOWERS AND PLEASANT TEMPERATURES ARE THEN EXPECTED UNDER BUILDING
RIDGE...NORTHEASTERLY WINDS AND A MUCH DRIER AIR MASS.
&&
.AVIATION...VFR CONDITIONS ARE EXPECTED DURING THE NEXT 24 HOURS.
HOWEVER...LIGHT PASSING VCSH LIKELY ACROSS THE USVI/BVI TERMINALS
AND TJSJ TIL EARLY IN THE MORNING. AFTER 14/16Z...SHRA POSSIBLE
NEAR/IN TJSJ AND TJBQ. CALM TO LIGHT AND VARIABLES WINDS WILL
DOMINATE TIL 14/13Z. AFT 14/13Z...LIGHT SOUTHEASTERLY WINDS AT
5-10 KT...WITH A STRONG SEA BREEZE VARIATION INFLUENCE.
&&
.MARINE...WINDS WILL CONTINUE TO WEAKEN THROUGH MONDAY. A WEAK
COLD FRONT WILL REACH THE LOCAL AREA ON MONDAY AND MOVE SOUTH OF
THE AREA TUESDAY. A MODERATE EASTERLY WIND FLOW IS THEN EXPECTED
TUESDAY THROUGH FRIDAY. EXPECT SEAS UP TO 5 FEET OVER THE NEXT
SEVERAL DAYS.
&&
.PRELIMINARY POINT TEMPS/POPS...
SJU 85 72 85 72 / 20 50 70 70
STT 85 72 85 72 / 30 50 60 60
NATIONAL WEATHER SERVICE SAN JUAN PR
500 AM AST SUN DEC 14 2014
.SYNOPSIS...TROUGH ACROSS THE WESTERN ATLANTIC WILL CONTINUE
TO MOVE EAST WITH ASSOCIATED FRONT REACHING THE AREA ON MONDAY.
SHORT WAVE TROUGH WILL MOVE ACROSS THE EASTERN CARIBBEAN LATE
THURSDAY INTO FRIDAY. AS THE AFOREMENTIONED TROUGH MOVES AWAY
FROM THE AREA...RIDGE PATTERN WILL BUILD FROM THE WEST SATURDAY
AND SUNDAY.
&&
.DISCUSSION...MOSTLY CLEAR TO PARTLY CLOUDY SKIES PREVAILED
ACROSS THE LOCAL ISLANDS OVERNIGHT...WITH BRIEF SHOWERS OBSERVED
OVER THE EASTERN THIRD OF PUERTO RICO...THE U.S. VIRGIN ISLANDS
AND THE REGIONAL WATERS. WINDS WERE LIGHT AND VARIABLE WITH
COASTAL TEMPERATURES IN THE LOW TO MID 70S.
MOSTLY FAIR WEATHER WILL CONTINUE TO PREVAIL ACROSS THE LOCAL
ISLANDS TODAY WITH PASSING SHOWERS ACROSS WINDWARD AREAS FROM
TIME TO TIME...FOLLOWED BY SOME AFTERNOON CONVECTION ACROSS
N AND NW PUERTO RICO UNDER LIGHT WINDS AND NEAR NORMAL
PRECIPITABLE WATER.
AS DEEP TROUGH MOVES ACROSS THE WESTERN ATLANTIC...ASSOCIATED
FRONT WILL REACH THE LOCAL AREA ON MONDAY...RESULTING IN
MOISTURE ADVECTION THROUGH AT LEAST TUESDAY. THEREFORE EXPECT
THE CONTINUED TREND OF PASSING SHOWERS ACROSS THE ATLANTIC
WATERS...THE NORTHERN HALF OF PUERTO RICO...VIEQUES...CULEBRA
AND USVI WITH SHOWERS SPREADING OVER THE SOUTHERN SLOPES OF
PUERTO RICO IN THE AFTERNOON HOURS BOTH DAYS. LINGERING MOISTURE
STILL EXPECTED WEDNESDAY...WITH A SHARP DECREASE WEDNESDAY NIGHT
INTO FRIDAY. HOWEVER A SHORT WAVE TROUGH WILL MOVE ACROSS THE
AREA THURSDAY AFTERNOON INTO EARLY FRIDAY. THEREFORE UNDER THIS
PATTERN...TRADE WIND SHOWERS SHOULD PREVAIL WEDNESDAY AND EARLY
THURSDAY WITH A BETTER CHANCE OF SHOWER ACTIVITY LATE THURSDAY
INTO EARLY FRIDAY AS THE SHORT WAVE TROUGH MOVES ACROSS THE AREA.
BY FRIDAY AFTERNOON AND INTO THE UPCOMING WEEKEND FEW PASSING
SHOWERS AND PLEASANT TEMPERATURES ARE THEN EXPECTED UNDER BUILDING
RIDGE...NORTHEASTERLY WINDS AND A MUCH DRIER AIR MASS.
&&
.AVIATION...VFR CONDITIONS ARE EXPECTED DURING THE NEXT 24 HOURS.
HOWEVER...LIGHT PASSING VCSH LIKELY ACROSS THE USVI/BVI TERMINALS
AND TJSJ TIL EARLY IN THE MORNING. AFTER 14/16Z...SHRA POSSIBLE
NEAR/IN TJSJ AND TJBQ. CALM TO LIGHT AND VARIABLES WINDS WILL
DOMINATE TIL 14/13Z. AFT 14/13Z...LIGHT SOUTHEASTERLY WINDS AT
5-10 KT...WITH A STRONG SEA BREEZE VARIATION INFLUENCE.
&&
.MARINE...WINDS WILL CONTINUE TO WEAKEN THROUGH MONDAY. A WEAK
COLD FRONT WILL REACH THE LOCAL AREA ON MONDAY AND MOVE SOUTH OF
THE AREA TUESDAY. A MODERATE EASTERLY WIND FLOW IS THEN EXPECTED
TUESDAY THROUGH FRIDAY. EXPECT SEAS UP TO 5 FEET OVER THE NEXT
SEVERAL DAYS.
&&
.PRELIMINARY POINT TEMPS/POPS...
SJU 85 72 85 72 / 20 50 70 70
STT 85 72 85 72 / 30 50 60 60
