Caribbean - Central America Weather

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Re: Caribbean - Central America Weather

#11961 Postby cycloneye » Thu Jun 28, 2012 2:20 pm

Bring on the wave Sunday/Monday with rain that we need!! :)

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
304 PM AST THU JUN 28 2012

.SYNOPSIS...A TUTT AXIS STRETCHES FROM THE CNTRL ATLC SW ALONG
17N. TUTT WILL RETROGRESS TO THE WRN CARIB BY EARLY NEXT WEEK.
UPPER LEVEL RIDGE WILL THEN BUILD ACROSS THE AREA ON MON AND HOLD
THRU MUCH OF NEXT WEEK. A TROPICAL WAVE WILL MOVE ACROSS THE ERN CARIB
SEA MON.


&&

.DISCUSSION...LOW LEVEL MOISTURE WILL REMAIN HIGH THROUGH FRI THEN
DIMINISH SAT. SCT AFTERNOON TSRA ARE XPCD FRI ACROSS WRN PR IN A
MOIST LOW LEVEL ENVIRONMENT DESPITE BEING ON CONVERGENT SIDE OF
TUTT AXIS. MUCH DRIER AIR EAST OF THE ANTILLES WILL MOVE OVER PR
ON SAT GREATLY DIMINISHING THE CHANCES FOR AFTERNOON CONVECTION.

MOISTURE INCREASES SUN AHEAD OF THE MAIN WAVE ACROSS THE CNTRL
TROP ATLC FOR BETTER CHANCES OF AFTERNOON CONVECTION. THEN
TROPICAL WAVE MOVES ACROSS THE ERN CARIBBEAN SEA MON WITH ENHANCED
CHANCES OF RAINFALL ACROSS ERN PR...SOUTH COAST AND CARIBBEAN SEA.
THIS WAVE IS EMBEDDED IN A LARGE ENVELOPE OF DEEP MOISTURE AND HAS
MODERATE AMOUNTS OF MID LEVEL ROTATION/SPIN SO IT DOES HAVE A
SMALL CHANCE OF DEVELOPING INTO A DEPRESSION. TC CLIMATOLOGY
SUGGESTS TROPICAL STORMS THAT DEVELOP IN THE FIRST TEND DAYS OF
JULY TEND TO DO IT CLOSE TO THE WINDWARD ISLANDS WITH MOST OF
THEM STAYING WELL SOUTH OF PR. ONLY A FEW OF THEM HAD TAKEN A MORE
NORTHWEST HEADING. FOR NOW JUST THINK SOME BENEFICIAL SHOWERS AND
SQUALLY WEATHER ACROSS THE CARIBBEAN COASTAL WATERS. THINGS DRY
OUT RAPIDLY MON NIGHT. THEN UPPER LEVEL RIDGE BUILDS ONCE AGAIN
OVER THE AREA WITH A RETURN TO THE DRY WEATHER THAT WE EXPERIENCED
MOST OF JUNE.



&&

.AVIATION...SHRA/TSRA ACROSS WESTERN AND INTERIOR PR WILL PRODUCE MVFR
LCLY IFR CONDS WITH MTN OBSCURATIONS IN WESTERN PR LASTING TILL
28/22Z. MOISTURE WILL INCREASE AT LOW AND MID LEVELS DUE TO A
DISTURBANCE APPROACHING THE AREA FROM THE NORTHEAST. ISO-SCT SHWRS
WILL MOVE INTO ERN PR AND THE USVI AFT 29/06Z AND CONT TIL ABOUT
29/15Z AFT WHICH DRYING WILL OCCUR. ONLY BRIEF MVFR CONDS ARE
EXPECTED DURING THIS TIME IN THE USVI. LLVL WINDS E-ESE 10 TO 20
KT.


&&

.MARINE...SEAS 3-5 FT THRU SUN THEN BUILD UP TO 7 FT AS PRES
GRADIENT TIGHTENS AS TROPICAL WAVE MOVES ACROSS THE ERN CARIB SEA.
SMALL CRAFT CONDITIONS ARE LIKELY AS WELL AS SOME SQUALLY WEATHER.


&&

.CLIMATE...TODAY MARKED THE 30TH CONSECUTIVE DAY WITH MAXT AOA 90F
AT THE SJU LMM INTL ARPT. THIS NOW RANKS AS THE SECOND LONGEST
STREAK. THE LONGEST STREAK EVER WAS IN 1981 WHEN THERE WERE 35
CONSECUTIVE DAYS. THE MONTH WITH THE MOST 90F DEG DAYS WAS AUG OF
1982 WHEN THERE WERE 30 DAYS. JUNE 2012 HAS A PRETTY GOOD SHOT AT
TYING THAT RECORD.

SO FAR THIS MONTH THERE HAVE BEEN 10 DAYS WITH MINT AOA 80F. JUNE
2012 IS THE JUNE WITH THE MOST 80F DEG NIGHTS SURPASSING JUNE 1983
WHEN THERE WERE 7 NIGHTS.

JUNE 2012 WILL MORE THAN LIKELY END AS THE WARMEST JUNE ON RECORD
AND ALSO THE WARMEST MONTH OF ANY YEAR ON RECORD WARMER THAN ANY
JULY OR AUG WITH AN AVG TEMP SO FAR OF 85.7F DEGS. JUNE 2012 IS
ALSO VERY LIKELY TO END AS THE DRIEST JUNE ON RECORD AND IN THE
TOP FIVE DRIEST MONTHS OF ANY YEAR ON RECORD. THE DRIEST MONTH
EVER WAS MARCH 2005 WHEN ZERO RAINFALL WAS RECORDED.



&&

.PRELIMINARY POINT TEMPS/POPS...
SJU 79 92 79 92 / 30 30 10 10
STT 80 89 80 89 / 30 30 20 20
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Re: Caribbean - Central America Weather

#11962 Postby Gustywind » Thu Jun 28, 2012 3:35 pm

cycloneye wrote:Bring on the wave Sunday/Monday with rain that we need!! :)

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
304 PM AST THU JUN 28 2012

.SYNOPSIS...A TUTT AXIS STRETCHES FROM THE CNTRL ATLC SW ALONG
17N. TUTT WILL RETROGRESS TO THE WRN CARIB BY EARLY NEXT WEEK.
UPPER LEVEL RIDGE WILL THEN BUILD ACROSS THE AREA ON MON AND HOLD
THRU MUCH OF NEXT WEEK. A TROPICAL WAVE WILL MOVE ACROSS THE ERN CARIB
SEA MON.


&&

.DISCUSSION...LOW LEVEL MOISTURE WILL REMAIN HIGH THROUGH FRI THEN
DIMINISH SAT. SCT AFTERNOON TSRA ARE XPCD FRI ACROSS WRN PR IN A
MOIST LOW LEVEL ENVIRONMENT DESPITE BEING ON CONVERGENT SIDE OF
TUTT AXIS. MUCH DRIER AIR EAST OF THE ANTILLES WILL MOVE OVER PR
ON SAT GREATLY DIMINISHING THE CHANCES FOR AFTERNOON CONVECTION.

MOISTURE INCREASES SUN AHEAD OF THE MAIN WAVE ACROSS THE CNTRL
TROP ATLC FOR BETTER CHANCES OF AFTERNOON CONVECTION. THEN
TROPICAL WAVE MOVES ACROSS THE ERN CARIBBEAN SEA MON WITH ENHANCED
CHANCES OF RAINFALL ACROSS ERN PR...SOUTH COAST AND CARIBBEAN SEA.
THIS WAVE IS EMBEDDED IN A LARGE ENVELOPE OF DEEP MOISTURE AND HAS
MODERATE AMOUNTS OF MID LEVEL ROTATION/SPIN SO IT DOES HAVE A
SMALL CHANCE OF DEVELOPING INTO A DEPRESSION. TC CLIMATOLOGY
SUGGESTS TROPICAL STORMS THAT DEVELOP IN THE FIRST TEND DAYS OF
JULY TEND TO DO IT CLOSE TO THE WINDWARD ISLANDS WITH MOST OF
THEM STAYING WELL SOUTH OF PR. ONLY A FEW OF THEM HAD TAKEN A MORE
NORTHWEST HEADING. FOR NOW JUST THINK SOME BENEFICIAL SHOWERS AND
SQUALLY WEATHER ACROSS THE CARIBBEAN COASTAL WATERS. THINGS DRY
OUT RAPIDLY MON NIGHT. THEN UPPER LEVEL RIDGE BUILDS ONCE AGAIN
OVER THE AREA WITH A RETURN TO THE DRY WEATHER THAT WE EXPERIENCED
MOST OF JUNE.



&&

.AVIATION...SHRA/TSRA ACROSS WESTERN AND INTERIOR PR WILL PRODUCE MVFR
LCLY IFR CONDS WITH MTN OBSCURATIONS IN WESTERN PR LASTING TILL
28/22Z. MOISTURE WILL INCREASE AT LOW AND MID LEVELS DUE TO A
DISTURBANCE APPROACHING THE AREA FROM THE NORTHEAST. ISO-SCT SHWRS
WILL MOVE INTO ERN PR AND THE USVI AFT 29/06Z AND CONT TIL ABOUT
29/15Z AFT WHICH DRYING WILL OCCUR. ONLY BRIEF MVFR CONDS ARE
EXPECTED DURING THIS TIME IN THE USVI. LLVL WINDS E-ESE 10 TO 20
KT.


&&

.MARINE...SEAS 3-5 FT THRU SUN THEN BUILD UP TO 7 FT AS PRES
GRADIENT TIGHTENS AS TROPICAL WAVE MOVES ACROSS THE ERN CARIB SEA.
SMALL CRAFT CONDITIONS ARE LIKELY AS WELL AS SOME SQUALLY WEATHER.


&&

.CLIMATE...TODAY MARKED THE 30TH CONSECUTIVE DAY WITH MAXT AOA 90F
AT THE SJU LMM INTL ARPT. THIS NOW RANKS AS THE SECOND LONGEST
STREAK. THE LONGEST STREAK EVER WAS IN 1981 WHEN THERE WERE 35
CONSECUTIVE DAYS. THE MONTH WITH THE MOST 90F DEG DAYS WAS AUG OF
1982 WHEN THERE WERE 30 DAYS. JUNE 2012 HAS A PRETTY GOOD SHOT AT
TYING THAT RECORD.

SO FAR THIS MONTH THERE HAVE BEEN 10 DAYS WITH MINT AOA 80F. JUNE
2012 IS THE JUNE WITH THE MOST 80F DEG NIGHTS SURPASSING JUNE 1983
WHEN THERE WERE 7 NIGHTS.

JUNE 2012 WILL MORE THAN LIKELY END AS THE WARMEST JUNE ON RECORD
AND ALSO THE WARMEST MONTH OF ANY YEAR ON RECORD WARMER THAN ANY
JULY OR AUG WITH AN AVG TEMP SO FAR OF 85.7F DEGS. JUNE 2012 IS
ALSO VERY LIKELY TO END AS THE DRIEST JUNE ON RECORD AND IN THE
TOP FIVE DRIEST MONTHS OF ANY YEAR ON RECORD. THE DRIEST MONTH
EVER WAS MARCH 2005 WHEN ZERO RAINFALL WAS RECORDED.



&&

.PRELIMINARY POINT TEMPS/POPS...
SJU 79 92 79 92 / 30 30 10 10
STT 80 89 80 89 / 30 30 20 20

Yeah let's hope that this strong will bring the water needed. Waouw, impressive records for this June :eek: man that's really awesome :double:
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Re: Caribbean - Central America Weather

#11963 Postby cycloneye » Fri Jun 29, 2012 5:55 am

Good morning. Here comes the Tropical Wave with the needed rain.Let's see how much rain it brings to the islands.


AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
500 AM AST FRI JUN 29 2012

.SYNOPSIS...AN ELONGATED TROUGH EXTENDS SOUTH SOUTHWEST INTO THE
NORTHEAST CARIBBEAN FROM AN UPPER LOW IN THE CENTRAL ATLANTIC...
WHILE A WEAK/ERODED UPPER RIDGE EXTENDS ACROSS HISPANIOLA FROM
THE NORTHWEST CARIBBEAN...THEN INTO THE WEST CENTRAL ATLANTIC.
THIS UPPER LEVEL PATTERN WILL MAINTAIN A GENERAL NORTHEAST FLOW
ALOFT. A BROAD BUT STRONG SURFACE RIDGE CONTINUED TO EXTEND SOUTHWARDS
ACROSS THE NORTHEAST CARIBBEAN...AND WILL TO DO SO THROUGH THE UPCOMING
WEEKEND WHILE STRENGTHENING. THIS WILL MAINTAIN MODERATE TO FAIRLY STRONG
EASTERLY TRADES ACROSS THE REGION THROUGH THE WEEKEND. A TROPICAL WAVE
WITH AXIS NOW NEAR 46/47 WEST WILL CONTINUE WESTWARD...AND IS EXPECTED
TO MOVE INTO THE CARIBBEAN LATE SUN OR EARLY MON. THIS WILL BRING
AN INCREASE IN TROPICAL MOISTURE ACROSS THE REGION THROUGH THE EARLY
PART OF NEXT WEEK. TO THE NORTH AND TRAILING THE WAVE IS ANOTHER AREA
OF SAHARAN DUST SPREAD ACROSS THE TROPICAL ATLANTIC.


&&

.DISCUSSION...
THE PREVAILING EAST TO NORTHEAST LOW TO MID LEVEL FLOW WILL CONTINUE
TO TRANSPORT OCCASIONAL PATCHES OF MOISTURE ACROSS THE REGION TODAY
THROUGH SATURDAY. THIS WILL ALLOW FOR PERIODS OF SHOWERS AND POSSIBLY
ONE OR TWO THUNDERSTORMS TO DEVELOP AND MOVE ACROSS THE LOCAL WATERS.
SOME OF THE MOSTLY LIGHT TO MODERATE SHOWER ACTIVITY WILL AFFECT
PARTS OF THE VIRGIN ISLANDS...BUT EVENTUALLY WILL BRUSH PARTS OF
THE NORTH AND EAST COASTAL SECTIONS OF PUERTO RICO DURING THE
EARLY MORNING. FOR THE REST OF THE DAY...EXPECT SUFFICIENT MOISTURE
AVAILABLE AND LOCAL DYNAMICS/FORCING TO AID IN FURTHER DEVELOPMENT
OF AFTERNOON SHOWERS AND ISOLATED THUNDERSTORMS. THE AFTERNOON CONVECTION
HOWEVER WILL BE FOCUSED MAINLY ACROSS THE WEST AND NORTHWEST INTERIOR
SECTIONS OF PUERTO RICO.

MODELS SUGGESTS A SLIGHTLY DRIER PATTERN FOR SATURDAY IN ADVANCE
OF THE TROPICAL WAVE PREVIOUSLY MENTIONED. HOWEVER...STILL EXPECT
SOME LOCALLY AND DIURNALLY INDUCED SHOWERS TO OCCUR IN ISOLATED AREAS.
INCREASING TROPICAL MOISTURE IS EXPECTED BY SUNDAY AND WILL CONTINUE
INTO THE EARLY PART OF NEXT WEEK...AS THE WAVE MOVES ACROSS THE REGION
AND ADDITIONAL ITCZ MOISTURE GETS LIFTED NORTHWARDS ACROSS THE REGION
IN RESPONSE TO THE UPPER THROUGH WHICH IS EXPECTED TO GRADUALLY RETROGRADE
WEST NORTHWEST OVER THE LOCAL AREA.

&&

.AVIATION...VFR CONDITIONS EXPECTED ACROSS THE LOCAL SITES FOR THE
NEXT 24 HOURS WITH THE EXCEPTION OF POSSIBLE MVFR/IFR CONDITIONS IN
AND AROUND TJMZ AND TJBQ BETWEEN 2917/2922 DUE TO EXPECTED SHRA/TSRA
DEVELOPMENT ACROSS WESTERN PR. WIND WILL BE MAINLY EASTERLY WITH SEA
BREEZE VARIATIONS AT AROUND 10 KNOTS WITH POSSIBLE GUSTS UP TO 20
KNOTS. VCSH AND LIGHT WINDS EXPECTED ACROSS THE AREA UNTIL 29/13Z.


&&

.PRELIMINARY POINT TEMPS/POPS...
SJU 91 79 91 80 / 30 10 10 20
STT 90 79 91 82 / 30 20 20 40
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Re: Caribbean - Central America Weather: Watching Invest 97L

#11964 Postby cycloneye » Fri Jun 29, 2012 1:49 pm

We have now invest 97L east of the islands.Is important to watch the progress of this wave to see if it develops before it gets into the Eastern Caribbean.Stay tuned to the 97L thread at active storms/invests forum.

viewtopic.php?f=59&t=113074&hilit=&start=0
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Re: Caribbean - Central America Weather: Watching Invest 97L

#11965 Postby Gustywind » Fri Jun 29, 2012 2:20 pm

cycloneye wrote:We have now invest 97L east of the islands.Is important to watch the progress of this wave to see if it develops before itgets into the Eastern Caribbean.Stay tuned to the 97L thread at active storms/invests forum.

Thanks to you Luis. What a surprising scenario, i dit not think that we could have an Invest at this time of the season with all that dust, waouw :eek: So let's watch the progress of 97L and carefully as usual...
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Re: Caribbean - Central America Weather: Watching Invest 97L

#11966 Postby cycloneye » Fri Jun 29, 2012 2:23 pm

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
311 PM AST FRI JUN 29 2012

.SYNOPSIS...AT UPPER LEVELS...A STRONG TUTT LOW ABOUT 800 MILES NORTHEAST
OF SAINT THOMAS HAS GENERATED A TROUGH THAT EXTENDS OVER
GUADELOUPE AND WEST ACROSS THE CARIBBEAN. THIS TROUGH IS EXPECTED
TO DRIFT OVER THE U.S. VIRGIN ISLANDS ON SUNDAY AFTERNOON. ON
MONDAY HIGH PRESSURE IN THE TROPICAL ATLANTIC WILL NOSE INTO THE
EASTERN CARIBBEAN. ALTHOUGH IT MOVES INTO THE WESTERN CARIBBEAN
LATER IN THE WEEK RIDGING REMAINS OVER THE LOCAL AREA.

AT LOW AND MID LEVELS...HIGH PRESSURE IS LODGED IN THE NORTH
CENTRAL ATLANTIC AND WILL REMAIN FOR THE NEXT 10 DAYS. THIS WILL
KEEP MODERATE TO FRESH TRADE WIND FLOW OVER THE AREA AT LOWER
LEVELS. DRIER AIR IS EXPECTED TO MOVE INTO THE LOCAL AREA ON
SATURDAY FOLLOWED BY MOISTURE FROM A TROPICAL WAVE ON SUNDAY AND
MONDAY. ANOTHER TROPICAL WAVE WILL MOVE INTO THE AREA ON WEDNESDAY
NIGHT.

&&

.DISCUSSION...MOISTURE FROM THE BACK SIDE OF A TUTT NORTHEAST OF
THE AREA MOVED OVER PUERTO RICO AND THE U.S. VIRGIN ISLANDS. AFTER
INTENSE SOLAR HEATING THUNDERSTORMS FORMED EXPLOSIVELY AND LEFT
UP TO 5 INCHES OF RAIN FROM NORTHERN TRUJILLO ALTO TO NORTHERN
BAYAMON. ALSO MUCH OF NORTHWEST PUERTO RICO FROM VILLALBA TO
AGUADILLA HAD AREAS OF HEAVY RAIN. SHOWERS WILL DISSIPATE QUICKLY
WITH ONLY A FEW FORMING DURING THE LATE AFTERNOON. MODELS STILL
INDICATE DRIER AIR MOVING INTO THE AREA TONIGHT AND SATURDAY
NIGHT. NEVERTHELESS A BAND OF BETTER MOISTURE WILL BE SANDWICHED
BETWEEN THESE DRIER BANDS AND WILL SUPPLY FUEL FOR ANOTHER ROUND
OF SHOWERS AND THUNDERSTORMS ON SATURDAY...SOMEWHAT LESS VIGOROUS
THAN THOSE EXPERIENCED TODAY. ON SUNDAY THE TROPICAL WAVE MOVING
THROUGH 51 WEST WILL ARRIVE IN THE AREA FOLLOWED BY ANOTHER AREA
OF MOISTURE ARRIVING ON MONDAY. HELP FROM THE UPPER ATMOSPHERE
WILL ALSO ARRIVE AS THE TROUGH PASSES TO THE NORTHWEST ADDING
BETTER UPWARD VERTICAL MOTION. AT THIS TIME...AND IN SPITE OF THE
FACT THAT THE WAVE HAS AN INCREASED CHANCE OF DEVELOPMENT...IT
APPEARS THAT RAINFALL AMOUNTS WILL BE LIMITED AND THE STRONGEST
AREA OF THE WAVE WILL PASS SOUTH OF THE LOCAL AREA. NEVERTHELESS
SOME THUNDERSTORMS ARE EXPECTED TO BE STRONG ENOUGH TO PRODUCE
AREAS OF URBAN AND SMALL STREAM FLOODING SUNDAY AND MONDAY. A
SECOND WAVE WILL ARRIVE ON WEDNESDAY NIGHT...BUT BETTER MOISTURE
WILL ALSO PRECEDE IT. HENCE THERE WILL BE BETTER CHANCES OF
SHOWERS AND THUNDERSTORMS DURING THIS UPCOMING WEEK THAN THE
PREVIOUS WEEK.


&&

.AVIATION...SHOWERS WILL CONTINUE TO DISSIPATE THIS AFTERNOON WITH
VFR CONDITIONS. GOOD WEATHER EXPECTED TOMORROW. CHANCES OF RAIN
INCREASE AGAIN SUN AND MON AS A TROPICAL WAVE MOVES ACROSS.

&&

.MARINE...WINDS WILL INCREASE WITH THE PASSAGE OF THE NEXT SEVERAL
WAVES...BUT AT THIS TIME SEAS ARE EXPECTED TO REMAIN BELOW 7 FEET.
SQUALLY WEATHER WILL BE ENCOUNTERED SUNDAY AND MONDAY...AND
POSSIBLY WEDNESDAY AND THURSDAY WITH THE SUCCESSIVE TROPICAL
WAVES.

&&

.EQUIPMENT...COMMUNICATIONS FOR RADAR AND LIGHTNING DATA...OUT
SINCE 1019Z...WAS RESTORED AT 1725Z.

&&

.CLIMATE...THIS MARKS THE 31ST CONSECUTIVE DAY THAT SAN JUAN HAS
RECORDED A HIGH OF 90 DEGREES OR MORE...AND...AS THE 29TH DAY IN
JUNE IT BREAKS THE OLD RECORD OF 28 DAYS SET IN JUNE OF 1983. THE
OLD RECORD OF 7 MINIMUMS AT OR ABOVE 80 DEGREES IN JUNE WAS BROKEN
SEVERAL DAYS AGO AND STANDS AT 10. RAINFALL SO FAR IN SAN JUAN
AMOUNTS TO 0.16 INCHES. THE RECORD DRIEST JUNE WAS 0.29 INCHES.


&&

.PRELIMINARY POINT TEMPS/POPS...
SJU 79 91 80 89 / 10 10 20 20
STT 79 91 81 91 / 20 20 40 40
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Re: Caribbean - Central America Weather: Watching Invest 97L

#11967 Postby cycloneye » Fri Jun 29, 2012 2:25 pm

Gustywind wrote:
cycloneye wrote:We have now invest 97L east of the islands.Is important to watch the progress of this wave to see if it develops before itgets into the Eastern Caribbean.Stay tuned to the 97L thread at active storms/invests forum.

Thanks to you Luis. What a surprising scenario, i dit not think that we could have an Invest at this time of the season with all that dust, waouw :eek: So let's watch the progress of 97L and carefully as usual...


The tropics many times bring surprises that we dont expect. Let's see how this wave does as it approach the islands.
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Re: Caribbean - Central America Weather: Watching Invest 97L

#11968 Postby cycloneye » Fri Jun 29, 2012 10:16 pm

A message from Grenada about the Tropical Wave 97L.


•By Chris Bolt <gommier at gmail.com>
•Date: Fri, 29 Jun 2012 19:04:30 +0100

Hi all,

I didn't want to be starting this early in the year, but there is a tropical wave about 800 miles due East of Grenada. It is developing slowly. It has a 20% chance of developing in the next 48 hours.
Apparently there are more waves almost ready to leave the African continent. It looks like this year's conveyor belt has been switched on. Time to get in the supplies, if you haven't already.
All the best

Hogan of Grenada

http://stormcarib.com/
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Re: Caribbean - Central America Weather

#11969 Postby cycloneye » Sat Jun 30, 2012 6:06 am

Good morning. Here comes the needed Tropical Wave with rain that the people in the islands want. :) I dont think it will develop further than what is is now.

NATIONAL WEATHER SERVICE SAN JUAN PR
532 AM AST SAT JUN 30 2012

.SYNOPSIS...A TUTT LOW NORTHEAST OF THE LOCAL REGION WILL CONTINUE TO
DRIFT SLOWLY TO THE NORTH NORTHEAST AWAY FROM THE REGION TODAY AND
TONIGHT. A TROPICAL WAVE NEAR 55 WEST EARLY THIS MORNING WILL
CONTINUE TO MOVE WESTWARD APPROACHING TO THE REGION LATE SUNDAY AND
MONDAY...INDUCING AN INCREASE IN MOISTURE ACROSS THE LOCAL ISLANDS.

&&

.DISCUSSION...THE DOPPLER WEATHER RADAR DETECTED ISOLATED TO
SCATTERED SHOWERS BUT MAINLY ACROSS THE SURROUNDING COASTAL WATERS
OVERNIGHT AND EARLY THIS MORNING. THIS ACTIVITY WAS ASSOCIATED WITH
A TROUGH MOVING ACROSS THE LOCAL ISLANDS. THE TUTT LOW AND THE
ASSOCIATED TROUGH ARE EXPECTED TO DRIFT SLOWLY NORTH NORTHEAST
TODAY. THESE FEATURES WILL SUPPLY FUEL FOR ANOTHER ROUND OF SHOWERS
AND THUNDERSTORMS THIS AFTERNOON...BUT SOMEWHAT LESS VIGOROUS THAN
THOSE EXPERIENCED ON FRIDAY.

A TROPICAL WAVE...ALONG 55 WEST THIS MORNING...WILL CROSS THE AREA
LATE SUNDAY/EARLY MONDAY INDUCING AN INCREASE IN TROPICAL MOISTURE
ACROSS THE FA. GFS MODEL GUIDANCE INDICATED THAT THE DEEP
CONVECTION ASSOCIATED WITH THIS WAVE WILL PASS MAINLY SOUTH OF THE
REGION ACROSS THE CARIBBEAN WATERS LATE SUNDAY. NEVERTHELESS SOME
THUNDERSTORMS ARE EXPECTED TO BE STRONG ENOUGH TO PRODUCE AREAS OF
URBAN AND SMALL STREAM FLOODING SUNDAY AND MONDAY. AFTER THE
PASSAGE OF THIS WAVE A GENERALLY DRY AND STABLE AIR MASS WILL
ENCOMPASS THE REGION FROM THE EAST.

&&

.AVIATION...MAINLY VFR CONDITIONS EXPECTED ACROSS THE LOCAL SITES
FOR THE NEXT 24 HOURS WITH THE EXCEPTION OF PERIODS OF MVFR OR EVEN
IFR CONDITIONS POSSIBLE BETWEEN 3017/3022 IN AND AROUND TJBQ AND
TJMZ DUE TO SHRA/TSRA DEVELOPMENT ACROSS WESTERN PR. WIND WILL BE
MAINLY EASTERLY WITH SEA BREEZE VARIATIONS AT AROUND 10 TO 15 KNOTS
WITH POSSIBLE GUSTS UP TO 25 KNOTS...ESPECIALLY AROUND THUNDERSTORMS.

&&

.PRELIMINARY POINT TEMPS/POPS...
SJU 91 80 89 80 / 20 20 40 20
STT 91 81 91 81 / 20 20 20 40
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Re: Caribbean - Central America Weather

#11970 Postby cycloneye » Sat Jun 30, 2012 10:16 am

And the records keep falling in June.

.CLIMATE...TODAY MARKED THE 32ND CONSECUTIVE DAY WITH MAXT AOA 90F
AT THE SJU LMM INTL ARPT. THIS CURRENTLY RANKS AS THE SECOND
LONGEST STREAK. THE LONGEST STREAK EVER WAS IN 1981 WHEN THERE
WERE 35 CONSECUTIVE DAYS. THE MONTH WITH THE MOST 90F DEG DAYS WAS
AUG OF 1982 WHEN THERE WERE 30 DAYS. JUNE 2012 HAS NOW TIED THIS
RECORD.

SO FAR THIS MONTH THERE HAVE BEEN 10 DAYS WITH MINT AOA 80F. JUNE
2012 IS THE JUNE WITH THE MOST 80F DEG NIGHTS SURPASSING JUNE 1983
WHEN THERE WERE 7 NIGHTS.

JUNE 2012 WILL END AS THE WARMEST JUNE ON RECORD AND ALSO THE
WARMEST MONTH OF ANY YEAR ON RECORD WARMER THAN ANY JULY OR AUG
WITH AN AVG TEMP SO FAR OF 85.7F DEGS. JUNE 2012 IS ALSO VERY
LIKELY TO END AS THE DRIEST JUNE ON RECORD AND IN THE TOP FIVE
DRIEST MONTHS OF ANY YEAR ON RECORD. THE DRIEST MONTH EVER WAS
MARCH 2005 WHEN ZERO RAINFALL WAS RECORDED.
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Re: Caribbean - Central America Weather

#11971 Postby cycloneye » Sat Jun 30, 2012 2:28 pm

Good afternoon. The effects from the Tropical Wave will start on early Sunday in the Lesser Antilles and spread westnorthwestward to the NE Caribbean islands. Let's see how much rain we can get from this wave. It looks like next week will be more wet than all of June as more waves arrive to the region. Bring them on as long they dont develop into a storm or hurricane. :)


AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
311 PM AST SAT JUN 30 2012

.SYNOPSIS...AN UPPER LEVEL TROUGH THAT STRETCHES FROM A LOW
850 MILES NORTH NORTHEAST OF SAINT THOMAS TO SAINT KITTS TO THE
SOUTHWEST CARIBBEAN WILL EDGE NORTHWEST AND ACROSS PUERTO RICO
MONDAY WHILE DISSIPATING. THEN HIGH PRESSURE WILL FILL IN OVER THE
EASTERN CARIBBEAN AND REMAIN FOR THE REST OF THE WEEK. A TROUGH
FROM A SIMILARLY POSITIONED LOW WILL DEEPEN INTO THE DOMINICAN
REPUBLIC ON THE FOLLOWING WEEKEND.

AT MID LEVELS...A GENERALLY EAST-WEST RIDGE CAN BE FOUND BETWEEN
20 AND 30 NORTH LATITUDE DURING MOST OF THE NEXT 10 DAYS.
INTERLUDES OF MOISTURE CAN BE FOUND OVER THE AREA SUNDAY THROUGH
MONDAY AND WEDNESDAY THROUGH THURSDAY AND BRIEFLY FRIDAY NIGHT.

AT LOWER LEVELS...SEVERAL TROPICAL WAVES TRANSIT THROUGH AND SOUTH
OF THE AREA THIS WEEK CARRYING MODEST MOISTURE. THE FIRST WILL ARRIVE IN
A SPLIT PULSE SUNDAY AND THEN MONDAY. THE SECOND WILL MOVE THROUGH
WEDNESDAY AND PULL MOISTURE WITH IT TO THE NORTHWEST THROUGH
THURSDAY. AT THE SURFACE...MODESTLY STRONG HIGH PRESSURE REMAINS CENTERED
IN THE ATLANTIC BETWEEN 2000 AND 2700 MILES NORTHEAST OF SAN JUAN
DURING THE NEXT 10 DAYS AND WILL POWER MODERATE TO FRESH TRADE
WINDS ACROSS THE AREA.

&&

.DISCUSSION...AS MENTIONED YESTERDAY...SOMEWHAT DIMINISHED
MOISTURE HAS YIELDED SOME SHOWERS AND THUNDERSTORMS...THOUGH NOT
AS STRONG OR AS WIDESPREAD AS YESTERDAY...MOST OF WHICH OCCURRED
ACROSS THE CENTRAL AND WESTERN INTERIOR PORTIONS OF PUERTO RICO.
AS OF 3 PM AST...SOME OF THE SHOWERS PRODUCED UP TO 2 INCHES OF
RAINFALL IN MOCA AND AGUADA ACCORDING TO NWS WEATHER RADAR. THE
TROPICAL WAVE IS STILL MOVING AT 6 DEGREES OF LONGITUDE TOWARD THE
LOCAL AREA AND IS AT ABOUT 58 DEGREES WEST LONGITUDE. THE MIMIC
PRODUCT SHOWS A BAND OF DRIER AIR AHEAD OF THE TROPICAL WAVE JUST
NOW ENTERING SAINT CROIX. MOISTURE RAMPS UP OVER SOUTHEAST PORTION
OF THE FORECAST AREA AT ABOUT 01/04Z WITH SAINT CROIX FEELING
SHOWERS FIRST...THEN MOVES INTO PUERTO RICO ABOUT 01/08Z. SHOWERS
SHOULD THEN BEGIN ON THE EASTERN COAST AND FOOTHILLS OF THE ISLAND
AND INCREASE DURING THE MORNING. WITH EAST SOUTHEAST FLOW THIS
WILL GIVE MANY AREAS ENOUGH TIME TO WARM UP BEFORE CLOUDS AND
SHOWERS DEVELOP...SO AM EXPECTING ABOVE NORMAL TEMPERATURES ONE
MORE DAY ON THE NORTH COAST. BUT MONDAY IS LIKELY TO BREAK THE
CONSECUTIVE RUN OF 90S AT THE SAN JUAN AIRPORT WHICH NOW STANDS AT
32 DAYS. CLOUDS AND SHOWERS WILL CONTINUE AS A SECOND PULSE
ARRIVES IN THE AREA ON MONDAY BRINGING MORE SHOWERS...AND POSSIBLY
HEAVIER RAINFALL. THERE IS A BREAK AND DRYING ON TUESDAY AND TUESDAY
NIGHT BUT THE NEXT WAVE IS STILL EXPECTED TO BE SIMILAR TO THE
PREVIOUS ONE. MOISTURE IN THIS WAVE HOWEVER CONTINUES INTO
THURSDAY. PRESENTLY MODELS CURL THE TOP OF WEDNESDAY`S WAVE BACK DOWN SO
THAT A BAND OF MOISTURE RE-ENTERS THE AREA ON FRIDAY NIGHT. THIS
MAY BRING SCATTERED SHOWERS BACK. SCATTERED SHOWERS ARE EXPECTED
OVER THE WEEKEND BUT IN A WAY MORE TYPICAL OF THE AREA. THAT
IS...EARLY MORNING SHOWERS ON THE EAST COAST AND AFTERNOON
THUNDERSTORMS IN THE WEST.


&&

.AVIATION...
A TSRA IS LIKELY AT TJMZ THROUGH 21Z WITH MVFR CIGS. VFR
ELSEWHERE THROUGH THE NIGHT. SCT SHRAS AND STORMS EXPECTED SUN WITH
THE PASSAGE OF A TROPICAL WAVE MAINLY AFT 01/18Z AT TJBQ...TJMZ
AND TJSJ AND ACCOMPANIED BY PERIODS OF MVFR CONDS AND MOUNTAIN
OBSCURATIONS.

&&

.MARINE...WINDS WILL PICK UP DURING THE PASSAGE OF THE TWO WAVES
SOMEWHAT AND SEAS WILL LIKELY EXCEED 5 FEET DURING THOSE TIMES IN
THE OPEN WATERS...BUT SMALL CRAFT ADVISORY CONDITIONS ARE STILL
NOT ANTICIPATED IN THE FORECAST AREA AT THIS TIME.

&&

.CLIMATE...NO RAIN HAS FALLEN AT THE AIRPORT YET. THIS LEAVES THE
TOTAL RAINFALL STANDING AT 0.16 INCHES...AND THE RECORD DRIEST AT
0.29 INCHES. AT THIS TIME RAINFALL IS NOT ANTICIPATED BEFORE 6 AM
AST SUNDAY. THE MAXIMUM ALSO REACHED 93 DEGREES AT THE LUIS MUNOZ
MARIN AIRPORT MAKING THIS THE 32ND CONSECUTIVE HIGH ABOVE 90
DEGREES AND THE MOST EVER DAYS ABOVE 90...91...AND 92 DEGREES IN
JUNE SINCE 1899. SHOULD NO RAIN OCCUR IT WILL BE THE WARMEST AND
DRIEST JUNE ON RECORD.


&&

.PRELIMINARY POINT TEMPS/POPS...
SJU 80 92 79 89 / 10 60 30 70
STT 80 89 81 89 / 10 60 50 60
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Re: Caribbean - Central America Weather

#11972 Postby cycloneye » Sat Jun 30, 2012 8:29 pm

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Re: Caribbean - Central America Weather

#11973 Postby cycloneye » Sat Jun 30, 2012 9:22 pm

June was a month of extremes in Puerto Rico. It really was very dry and very warm with many records broken.

http://www.srh.noaa.gov/sju/?n=june2012
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#11974 Postby Gustywind » Sat Jun 30, 2012 9:27 pm

Good news, we received nice rainfall with thunder and isolated lightnings.
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Re:

#11975 Postby cycloneye » Sat Jun 30, 2012 9:43 pm

Gustywind wrote:Good news, we received nice rainfall with thunder and isolated lightnings.


It is indeed good news for that island that needs the rain. We are here waiting for that rain to come between Sunday and Monday.Let's see how much falls to at least aliviate our drought conditions.
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Re: Re:

#11976 Postby Gustywind » Sun Jul 01, 2012 12:38 am

cycloneye wrote:
Gustywind wrote:Good news, we received nice rainfall with thunder and isolated lightnings.


It is indeed good news for that island that needs the rain. We are here waiting for that rain to come between Sunday and Monday.Let's see how much falls to at least aliviate our drought conditions.

I hope that you will receive nice amounts of rain too from that this twave :)!
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#11977 Postby cycloneye » Sun Jul 01, 2012 6:13 am

Good morning. The wave has arrived and now let's see how much rain falls between today and Monday.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
458 AM AST SUN JUL 1 2012

.SYNOPSIS...AN UPPER LEVEL TROUGH THAT STRETCHES FROM A LOW ALMOST
1000 MILES NORTH NORTHEAST OF SAINT THOMAS NOW EXTENDS BETWEEN THE
U.S. VIRGIN ISLANDS OF SAINT THOMAS AND SAINT CROIX TO ANOTHER LOW
SOUTH OF HAITI AND WILL DISSIPATE AS IT REACHES PUERTO RICO SUNDAY NIGHT.
THEN HIGH PRESSURE WILL FILL IN OVER THE EASTERN CARIBBEAN AND
REMAIN FOR THE REST OF THE WEEK.

AT MID LEVELS...A GENERALLY EAST-WEST RIDGE CAN BE FOUND BETWEEN
20 AND 30 NORTH LATITUDE DURING MOST OF THE NEXT 10 DAYS.
INTERLUDES OF MOISTURE CAN BE FOUND OVER THE AREA SUNDAY THROUGH
MONDAY AND WEDNESDAY THROUGH THURSDAY AND BRIEFLY FRIDAY NIGHT.

AT LOWER LEVELS...SEVERAL TROPICAL WAVES TRANSIT THROUGH AND SOUTH
OF THE AREA THIS WEEK CARRYING MODEST MOISTURE. THE FIRST WILL ARRIVE IN
A SPLIT PULSE TODAY AND THEN MONDAY. THE SECOND WILL MOVE THROUGH
WEDNESDAY AND PULL MOISTURE WITH IT TO THE NORTHWEST THROUGH
THURSDAY. IT WILL BE FOLLOWED BY A WIND SURGE THURSDAY. AT THE
SURFACE...MODESTLY STRONG HIGH PRESSURE REMAINS CENTERED IN THE
ATLANTIC BETWEEN 2300 AND 2700 MILES NORTHEAST OF SAN JUAN DURING
THE NEXT 10 DAYS AND WILL POWER MODERATE TO FRESH TRADE WINDS
ACROSS THE AREA.

&&

.DISCUSSION...A BAND OF SCATTERED SHOWERS IS ADVANCING WITH THE
TROPICAL WAVE. THE WESTERN EDGE OF THE SHOWERS EXTENDS FROM SAINT
MARTIN TO AND AREA ALMOST 300 MILES SOUTHWEST OR 250 MILES SOUTH
OF VIEQUES. LESSER SHOWERS WERE APPROACHING SAINT CROIX AS OF 4 AM
AST. A SMALL PEPPERING OF SHOWERS WAS ALSO JUST LEAVING THE
ATLANTIC WATERS TO THE NORTH. THE MIMIC PRODUCT SHOWS GOOD
MOISTURE MOVING STEADILY INTO THE LOCAL AREA. THIS BAND IS NOW
ONLY ABOUT 100 MILES ACROSS AND MOISTURE WILL RETURN TO LEVELS
ONLY SLIGHTLY HIGHER THAN CURRENT LEVELS ABOUT 5 HOURS AFTER
PASSAGE. CURRENTLY IT LOOKS LIKE THE BAND WILL MOVE THROUGH THE
U.S. VIRGIN ISLANDS THIS MORNING...AND THE BULK OF PUERTO RICO
THIS AFTERNOON. A SECOND LESSER BAND OF MOISTURE IS EXPECTED ON
MONDAY...BUT WILL BRING GOOD SHOWER ACTIVITY AS WELL WITH MORE
SOUTHEASTERLY WINDS. HENCE SHOWERS MAY BE BETTER IN THE NORTHWEST
ON MONDAY. AIR BECOMES DRIER ON TUESDAY AND TUESDAY NIGHT...BUT
PRECIPITABLE WATER VALUES JUMP AS THE NEXT WAVES MOVES INTO THE
AREA ON WEDNESDAY WITH GOOD MOISTURE FOLLOWING WEDNESDAY NIGHT.
WINDS INCREASE ON THURSDAY. AT THIS TIME MORE SAHARAN DUST IS
EXPECTED WEDNESDAY AND THURSDAY...BUT SOME DUST IS PRESENT EVEN IN
THE CURRENT WAVE...SO SKIES WILL BE HAZIER TODAY AND TOMORROW THAN
THEY WERE SATURDAY. WINDS ARE MAINLY EASTERLY AT THIS TIME...BUT
THE SOUTHERLY COMPONENT INCREASES SOMEWHAT MONDAY AND TUESDAY.
THIS MEANS THAT TEMPERATURES ON THE NORTH COAST ARE LIKELY TO
REACH 90 DEGREES AGAIN ON TUESDAY...AND WILL DO SO ON MONDAY AS
WELL IF CLOUDS AND MOISTURE FROM THE PASSING WAVE ARE NOT
SUFFICIENT...BUT CURRENT FORECAST IS CALLING FOR 89 DEGREES ON
MONDAY IN SAN JUAN THEN BACK TO 91 ON TUESDAY. THURSDAY IS ALSO
EXPECTED TO BE A LITTLE COOLER AS A RESULT OF THE SECOND WAVE
PASSAGE.

&&

.AVIATION...
MVFR/IFR CONDITIONS ARE EXPECTED ACROSS THE AREA DUE TO A
TROPICAL WAVE APPROACHING FROM THE EAST THAT WILL LIKELY CAUSE
SHRA/TSRA ACROSS THE LOCAL TAF SITES. THERE IS SOME UNCERTAINTY IN
THE EXACT TIMING BUT SHRA/TSRA ARE EXPECTED TO AFFECT TNCM/TKPK AS
WELL AS THE USVI AND EVEN TJSJ IN THE MORNING HOURS. THEN...TSRA
ARE LIKELY AT TJMZ THROUGH THE AFTERNOON. WE EXPECT MAINLY VCTS
FOR TJBQ AND TJPS. AT THIS TIME...THE SHRA/TSRA ASSOCIATED WITH
THE TROPICAL WAVE ARE EXPECTED ACROSS THE LOCAL ISLANDS THROUGH
TODAY AND TONIGHT.&&

.MARINE...WINDS INCREASE SOMEWHAT WITH EACH TROPICAL WAVE...BUT SO
FAR FORECASTS MAINTAIN THAT SEAS WILL REMAIN BELOW SMALL CRAFT
ADVISORY CONDITIONS THROUGH THE WEEK. EXPECT AN INCREASE IN
SQUALLS AND THUNDERSTORMS CAUSING WINDS THAT MAY BRIEFLY EXCEED
30 KNOTS.

&&

.CLIMATE...IT IS FINAL NOW. JUNE 2012 BECAME THE DRIEST JUNE ON
RECORD IN SAN JUAN WITH 0.16 INCHES. THE SECOND DRIEST JUNE WAS IN
1985 WITH 0.29 INCHES. JUNE WAS ALSO THE WARMEST MONTH RECORDED OF
ANY MONTH WITH AN AVERAGE OF 85.7 DEGREES. THE PREVIOUS WARMEST
MONTH WAS IN JUNE OF 1983. IT HAD AN AVERAGE OF 85.4 DEGREES.

&&

.PRELIMINARY POINT TEMPS/POPS...
SJU 90 78 88 80 / 60 50 70 50
STT 89 80 89 81 / 60 50 60 40
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ATL: INVEST 97L

#11978 Postby abajan » Sun Jul 01, 2012 8:35 am

Last night we got some showers and a bit of thunder out 97L's remnants and this morning we've had a few more showers. I certainly hope we get some more because it's been kinda hot here lately.
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Re: ATL: INVEST 97L

#11979 Postby cycloneye » Sun Jul 01, 2012 8:46 am

abajan wrote:Last night we got some showers and a bit of thunder out 97L's remnants and this morning we've had a few more showers. I certainly hope we get some more because it's been kinda hot here lately.


I moved the post to this thread as the 97L one will go to the archieves soon. Hopefully you get a bit more rain.
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Re: Caribbean - Central America Weather

#11980 Postby cycloneye » Sun Jul 01, 2012 8:53 am

As July begins,we have to start to look much more closely to our east as things turn more favorable as the month advances. Let's see how this July behaves.

Image
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