March daily Weather in Puerto Rico
Good morning. A mix of clouds and sun with some isolated showers will prevail on Sunday. Seas continue to be rough so dont venture to the beaches.
AREA FORECAST DISCUSSION...DELAYED
NATIONAL WEATHER SERVICE SAN JUAN PR
529 AM AST SUN MAR 10 2013
.SYNOPSIS...REMNANTS OF OLD FRONTAL BOUNDARY HAS NOW SHIFTED
FURTHER EAST ACROSS THE NORTHERN LEEWARD ISLANDS...WITH SURFACE
HIGH PRESSURE RIDE BUILDING ACROSS THE AREA FROM THE SOUTHWEST
ATLANTIC. THIS WAS INDUCING A LIGHT TO MODERATE NORTHERLY WIND
FLOW WHICH CONTINUED TO TRANSPORT PATCHES OF SHALLOW LOW TO MID
LEVEL STRATIFORM CLOUDS WITH A FEW EMBEDDED AREAS OF LIGHT SHOWERS
ACROSS THE REGION. IN THE MID TO UPPER LEVELS...DEEP LAYERED POLAR
TROUGH ACROSS THE WEST CENTRAL ATLANTIC CONTINUED TO SHIFT FURTHER
EASTWARDS AS HIGH PRESSURE RIDGE ALOFT EXITS THE EASTERN SEABOARD
OF THE UNITED STATES. THIS PATTERN WILL CONTINUE TO INDUCE A
ZONAL/WESTERLY WIND FLOW ALOFT ACROSS THE REGION AT LEAST FOR
ANOTHER DAY OR SO. THE WINDS SHOULD BECOME MORE NORTHWESTERLY BY
MONDAY AND TUESDAY OF NEXT WEEK...WHEN HIGH PRESSURE RIDGE WILL
BUILD ACROSS THE NORTHEAST CARIBBEAN AND INCREASE UPPER LEVEL
CONVERGENCE AND SUBSIDENCE. SATELLITE IMAGERY AS WELL AS LATEST
GFS MODEL GUIDANCE WHICH INITIALIZED WELL...SUGGESTS THAT THE
BASE OF THE 850-70O MILLIBAR TROUGH WAS NOW MOVING ACROSS THE
REGION AND SHOULD ALSO SHIFT FURTHER EAST OF THE ISLANDS TODAY.
&&
.DISCUSSION...AREA OF MOISTURE ASSOCIATED WITH FRONTAL BOUNDARY AND
LOW TO MID LEVEL CONVERGENT ZONE WILL LINGER ACROSS THE REGION AREA
AT LEAST FOR TODAY. HOWEVER EXPECT A GRADUAL CLANG THROUGHOUT
THE DAY AS PREVIOUSLY MENTIONED LOW TO MID LEVEL TROUGH PUSHES
FURTHER EAST OF THE ISLANDS. IN THE MEANTIME EXPECT PERIODS OF
CLOUDINESS AND MOSTLY LIGHT SHOWERS ACROSS PARTS OF THE ISLANDS
ESPECIALLY DURING THE EARLY MORNING HOURS. FOR THE REST OF THE DAY
LOCAL EFFECTS AND POCKETS OF RESIDUAL MOISTURE WILL GIVE WAY TO
MOSTLY ISOLATED SHOWERS MAINLY ACROSS PARTS OF THE INTERIOR AND
SOUTH CENTRAL SECTIONS OF PUERTO RICO. LESSER ACTIVITY IS FORECAST
FOR THE VIRGIN ISLANDS TODAY WHERE VARIABLY CLOUDY SKIES WILL PREVAIL
BUT LITTLE RAINFALL IS EXPECTED.
A GRADUAL DRYING TREND IS IN STORE FOR AT LEAST THE EARLY PART OF
THE UPCOMING WEEK...AS THE DEEP LAYERED HIGH PRESSURE RIDGE WILL
BUILD ACROSS THE REGION AND INCREASE THE PREVAILING NORTHERLY WIND
FLOW AT LEAST THROUGH TUESDAY...WHEN WINDS ARE EXPECTED TO BECOME
MORE NORTHEASTERLY AS THE SURFACE HIGH PRESSURE RIDGE SHIFTS TO JUST
NORTH OF THE AREA. AT THIS TIME EXPECTED ONLY PERIODS OF PASSING
EARLY MORNING SHOWERS MAINLY ALONG THE NORTH COASTAL SECTIONS OF
THE ISLANDS WITH ONLY A SLIGHT CHANCE OF ISOLATED SHOWERS EACH DAY
DURING THE REST OF THE WORK WEEK.
&&
.AVIATION...MOSTLY VFR CONDITIONS WILL PREVAIL ACROSS THE LOCAL
FLYING AREA THROUGH THE FORECAST PERIOD. ABUNDANT LOW TO MID LEVEL
CLOUDINESS WILL CONTINUE ACROSS THE FLYING AREA UNTIL 10/16Z. FEW
PASSING SHOWERS AND MOUNTAIN OBSCURATION WILL CONTINUE ACROSS
CENTRAL AND NORTHERN PUERTO RICO PRODUCING ONLY BRIEF PERIODS OF
MVFR CONDITIONS ACROSS TJBQ AND TJSJ. TJSJ 10/00Z RAOB INDICATED A
LIGHT...LESS THAN 10 KNOTS...NORTHERLY WIND FLOW FROM THE SURFACE TO
5K FEET...BECOMING WESTERLY AND STRONG ABOVE 5 KFT.
&&
.MARINE...MARINE CONDITIONS CONTINUED TO DETERIORATE WITH NORTHERLY
SWELL EXPECTED TO SPREAD ACROSS THE LOCAL WATERS AND PASSAGES TODAY
AND PEAKING EARLY MONDAY...FOLLOWED BY A SECONDARY PULSE PEAKING
ON TUESDAY. MODELS HAVE SO FAR BEEN A LITTLE HIGH AND WITH PEAK
SWELL OF 4.3 METERS FORECAST FOR BUOY 41043 AND EXPECT THIS TREND
TO CONTINUE. THE SAME MODEL IS ALSO FORECASTING A SECOND PEAK ON
TUESDAY SLIGHTLY BELOW THE FIRST WITH LARGE SWELL CONTINUING TO
ARRIVE THROUGHOUT THE REST OF THE WEEK. SMALL CRAFT ADVISORIES
WILL THEREFORE CONTINUE FOR MOST OF THE LOCAL WATERS DUE TO HAZARDOUS
SEA CONDITIONS. IN ADDITION...HIGH SURF ADVISORIES AND A COASTAL
FLOOD WATCH WILL REMAIN IN EFFECT FOR THE NORTHWEST TO NORTH FACING
COASTLINES OF PUERTO RICO...AND ADJACENT ISLANDS INCLUDING THE NORTHERN
VIRGIN ISLANDS.
&&
.PRELIMINARY POINT TEMPS/POPS...
SJU 80 70 82 71 / 20 10 10 20
STT 83 71 82 71 / 20 10 10 20
Daylight Saving Time begins
This blog is to remind all about moving the clocks ahead one hour on Saturday night as Daylight Saving Time begins at 2 AM EDT. You will have one less hour of sleep.
Link
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Updated: 1:53 PM GMT on March 09, 2013
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When will the first named storm form in the 2013 North Atlantic Season ?
As March begins we can start to ask this question about when will the first named storm forms in the North Atlantic basin. I say between June 11-20 the first storm forms. What do all of you think of a date?
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Updated: 9:53 PM GMT on March 01, 2013
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