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Re: Caribbean - Centralamerica Tropical Weather Thread

#4161 Postby cycloneye » Sun Apr 04, 2010 5:55 am

Good morning to all and Happy Easter.Image


AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
604 AM AST SUN APR 4 2010

.SYNOPSIS...MID LEVEL HIGH PRESSURE WILL EXTEND INTO THE LOCAL
REGION THROUGH EARLY NEXT WEEK...RESULTING IN A GENERALLY FAIR AND
MAINLY DRY WEATHER PATTERN ACROSS THE LOCAL ISLANDS. HOWEVER...
"TUTT-LIKE"...HANG BACK UPPER LEVEL TROUGHINESS AND A COUPLE OF
EMBEDDED DISTURBANCES WILL MOVE ACROSS OR JUST NORTH OF THE LOCAL
AREA DURING THE UPCOMING WEEK.

&&

.DISCUSSION...STILL EXPECT PRETTY DECENT CONDITIONS ACROSS THE FA
FOR THE NEXT FEW DAYS...WITH GENERALLY FAIR AND MAINLY DRY
CONDITIONS AND WITH SEASONABLE HIGH TEMPERATURE READINGS AND
FAIRLY LOW DEW POINTS. HOWEVER...SMALL BANDS AND PATCHES OF
MOISTURE WILL STILL MOVE ACROSS THE LOCAL AREA FROM TIME TO TIME
AND WILL RESULT IN BRIEF INTERVALS OF CLOUDS AND A FEW SHOWERS
OVER PARTS OF THE LOCAL ISLANDS. FIRE DANGER THREAT REMAINS FOR
AWHILE. PLEASE SEE FIRE WEATHER SECTION BELOW.

&&

.AVIATION...VFR CONDITIONS WILL PREVAIL ACROSS THE LOCAL ISLANDS
AND AT ALL LOCAL TAF SITES THROUGH THE NEXT 24 HOURS AND PROBABLY
BEYOND. HOWEVER...BRIEF MVFR CONDITIONS ARE STILL POSSIBLE IN
PASSING SHRA.

&&

.MARINE...MODERATE NORTH SWELLS WILL CONTINUE TO AFFECT THE LOCAL
ATLANTIC WATERS AND THE CARIBBEAN PASSAGES TODAY THROUGH
TONIGHT...WHILE SLOWLY SUBSIDING. HOWEVER...THESE SWELLS WILL
STILL RESULT IN ROUGH AND HAZARDOUS MARINE CONDITIONS ACROSS THE
WATERS. IN GENERAL...EXPECT WINDS OF 19 KNOTS OR LESS AND SEAS OF
3 TO 8 FEET ACROSS THE REGIONAL WATERS THROUGH TUESDAY.

A HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 11 AM AST THIS
MORNING.

&&

.FIRE WEATHER...ENHANCED FIRE DANGER THREAT THE NEXT COUPLE OF
DAYS DUE TO VERY DRY CONDITIONS...GUSTY WINDS AND POOR VEGETATIVE
HEALTH ACROSS SRN PR AND ST CROIX. HAD A COUPLE OF FIRE YESTERDAY
AND MORE COULD DEVELOP TODAY...ESPECIALLY WITH MIN RH DROPPING
INTO THE MID 30S TODAY AND NORTH NORTHEAST WINDS OF 10 TO 15
KNOTS...EXCEPT RIGHT ALONG THE SOUTH COAST WHERE AN ONSHORE
BREEZE IS EXPECTED. ALL LOCAL RESIDENTS AND VISITORS ARE AGAIN
URGED TO PLEASE USE EXTRA CAUTION WITH ANY OUTDOOR FIRES AND
SAFELY DISCARD ANY FLAMMABLE MATERIALS.
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Re: Caribbean - Centralamerica Tropical Weather Thread

#4162 Postby cycloneye » Sun Apr 04, 2010 10:00 am

A correspondant from the island of Nevis talks about the drought in that island.For those who dont know what is happening in the Caribbean,many islands are experiencing a big drought spell since last December or in some cases more back in time.

http://stormcarib.com/reports/current/nevis.shtml

Greetings & Happy Easter to All,

Still on the dry side here. Not a lot of rain has fallen in the last two months & it looks like the pattern is continuing.
Attached a pdf file of the rain fall data year to date for those interested.

Thanks,

Harry
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Re: Caribbean - Centralamerica Tropical Weather Thread

#4163 Postby cycloneye » Sun Apr 04, 2010 1:42 pm

Special Statement about Fire Danger

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
1134 AM AST SUN APR 4 2010

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A SPECIAL WEATHER
STATEMENT EFFECTIVE UNTIL 530 PM AST FOR PEOPLE IN THE FOLLOWING
MUNICIPALITIES
IN PUERTO RICO
YAUCO...GUAYANILLA...ARROYO...PATILLAS...MAUNABO...GUAYAMA...
GUANICA...JUANA DIAZ...PONCE...CABO ROJO...SALINAS...SANTA
ISABEL...PENUELAS...YABUCOA AND LAJAS


LOW RELATIVE HUMIDITY VALUES AND POOR VEGETATION HEALTH ACROSS
SOUTHERN PUERTO RICO WILL MAKE VEGETATION VERY SUSCEPTIBLE TO
BURNING. AT 11:26 AM...DOPPLER RADAR IMAGERY SHOWS TWO DIFFERENT
SMOKE PLUMES ONE JUST TO THE NORTH OF JOBOS IN GUAYAMA AND ANOTHER
ONE NEAR THE PATILLAS AND MAUNABO COUNTY LINE. SURFACE WINDS WILL
REMAIN MAINLY OUT OF THE NORTHEAST AROUND 10 MPH BEYOND FIVE MILES
FROM THE COAST BUT A SOUTHERLY WIND OF 5 TO 10 MPH CAN BE EXPECTED A
FEW MILES INLAND FROM THE SOUTH COAST. MINIMUM RELATIVE HUMIDITY
VALUES WILL DROP TO AROUND 30 PERCENT.

ALL LOCAL RESIDENTS AND VISITORS ARE URGED TO PLEASE USE EXTRA
CAUTION WITH ANY OUTDOOR FIRES AND SAFELY DISCARD ANY FLAMMABLE
MATERIALS.
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Re: Caribbean - Centralamerica Tropical Weather Thread

#4164 Postby cycloneye » Sun Apr 04, 2010 2:57 pm

Afternoon discussion by NWS San Juan

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
255 PM AST SUN APR 4 2010

.SYNOPSIS...A BROAD TROF WILL DOMINATE AT MID AND UPPER LEVELS
WHILE SFC RIDGE MAINTAINS A DRY STABLE THROUGH MID WEEK. AN
INVERTED TROF PATTERN WILL DEVELOP NEXT WEEKEND WITH WET AND MORE
UNSTABLE CONDITIONS EXPECTED.

&&

.FIRE WEATHER...ENHANCED FIRE DANGER THREAT WILL CONTINUE THROUGH
TOMORROW AS DRIER AIR CONTINUES TO FILTER INTO THE REGION ON NNE
WINDS OF AROUND 10 MPH. LATEST TPW IMAGERY SHOWS ABOUT 0.79 INCHES
OF PWAT VALUE OVR PR. THESE VALUES ARE ONLY ABOUT 56% OF NORMAL
AND ARE EXTREMELY LOW FOR THIS TIME OF THE YEAR. REAL TIME
OBSERVATIONS TODAY SHOWED THAT MIN RH DROPPED TO AROUND 30% AT
LOWER ELEVATIONS ON THE SOUTH COAST AND IN THE VALLE DEL TURABO.

RADAR IMAGERY HAS SHOWN SEVERAL SMOKE PLUMES FROM FIRES IN THE
JOBOS AREA IN GUAYAMA...AROUND THE PATILLAS AND MAUNABO COUNTY
LINE AND A MORE RECENT ONE IN PONCE AND ANOTHER ONE IN THE DORADO
AREA. WILDFIRE ABBA HAS ALSO DETECTED FIRES IN THE VALLE DEL
TURABO IN CAGUAS AND SVRL FIRES ACROSS SOUTHEAST PR. 18Z MODIS
IMAGERY FROM TODAY SHOULD BECOME AVAILABLE BY 5PM AND GIVE US A
BETTER VIEW OF THESE FIRES FROM SPACE.

MODIS TRUE AND NDVI IMAGERY FROM YESTERDAY SHOWS THAT VEGETATIVE
HEALTH REMAINS VERY POOR AND SUSCEPTIBLE TO BURNING ACROSS WRN AND
SRN PR AND ESPECIALLY ST. CROIX. VEGETATION ACROSS CULEBRA AND ST.
THOMAS HAS ALSO DRIED OUT SIGNIFICANTLY IN RECENT WEEKS.

GREATEST RISK FOR WILD/BRUSH FIRES IS OVER SRN PR AND ST. CROIX.
OVER THE MTNS...MORE GREEN VEGETATION AND COOLER TEMPS/HIGHER RH
VALUES WILL LIMIT FIRE DANGER THREAT THERE.

ALL LOCAL RESIDENTS AND VISITORS ARE URGED TO PLEASE USE EXTRA
CAUTION WITH ANY OUTDOOR FIRES AND SAFELY DISCARD ANY FLAMMABLE
MATERIALS.


&&

.DISCUSSION...SFC RIDGE OFF THE U.S. SOUTHEAST COAST WILL
CONTINUE TO MAINTAIN A VERY DRY AND STABLE PATTERN. A SLOW GRADUAL
MOISTENING PROCESS IS EXPECTED TO BEGIN AROUND MID WEEK AS SFC
RIDGE MOVES EAST AND WINDS VEER MORE TO THE EAST. MAIN CONCERN
NEXT 24 HRS IS FIRE DANGER POTENTIAL DUE TO DRY FUELS AND LOW RH
VALUES. SEE FIRE SECTION ABOVE. ISOLD SHALLOW CONVECTION WILL BE
POSSIBLE BEGINNING TUE AS SUBSIDENCE CAP WEAKENS/LIFTS TO 700 MB
AND MOISTURE BEGINS TO RECOVER. HOWEVER...WE REALLY ARE GOING TO
HAVE TO WAIT UNTIL NEXT WEEKEND TO SEE BETTER CHANCES FOR WETTING
RAINS. MODELS INDICATE AN INVERTED SFC TROF PATTERN SETTING UP
ACROSS THE MONA PASSAGE AND MID-UPPER LEVEL TROF HANGING BACK WEST
ACROSS THE WINDWARD PASSAGE. LOOKING AT CPC MJO PROGNOSIS...MJO
HAS BEEN PROPAGATING EWD ACROSS THE MARITIME CONTINENT INTO THE
WESTERN PACIFIC WITH STATISTICAL AND DYNAMICAL MODELS INDICATING
FAVORABLE MJO CONDITIONS DEVELOPING ACROSS THE WESTERN HEMISPHERE
AROUND THE MIDDLE OF THE MONTH. SO WETTER CONDITIONS MAY BE IN
STORE FOR THE MIDDLE OF THE MONTH.

&&

.AVIATION...VFR CONDITIONS EXPECTED NEXT 24 HRS AND NO SIGNIFICANT
WX IS EXPECTED THROUGH THE NEXT FIVE DAYS.

&&

.MARINE...SEAS DIMINISHING BELOW SCA IN THE NEXT 6 TO 12 HRS.
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#4165 Postby Gustywind » Sun Apr 04, 2010 5:44 pm

HAPPY EASTER TO ALL MY CARIB FRIENDS AND THE OTHERS FROM THE :flag: and etc.
Image
Regards
Gustywind
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Re: Caribbean - Centralamerica Tropical Weather Thread

#4166 Postby Macrocane » Sun Apr 04, 2010 6:26 pm

:uarrow: Thanks Gustywind!

Convection has developed again over Central America this afternoon being strongest in the central part of El Salvador.
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Re: Caribbean - Centralamerica Tropical Weather Thread

#4167 Postby Gustywind » Sun Apr 04, 2010 7:38 pm

Macrocane wrote::uarrow: Thanks Gustywind!

Convection has developed again over Central America this afternoon being strongest in the central part of El Salvador.
Image

:)
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Re: Caribbean - Centralamerica Tropical Weather Thread

#4168 Postby tropicana » Sun Apr 04, 2010 7:42 pm

Regional Weather Summary
Sun Apr 04 2010

Today's Highs and rain (if any)

Piarco, Trinidad 35.6C 96F
Crown Point, Tobago 31.6C 89F
Point Salines, Grenada 30.6C 87F
Grantley Adams, Barbados 31.0C 88F
Arnos Vale, St Vincent 31.8C 89F
Hewanorra, St Lucia 31.3C 88F
Vigie, St Lucia 32.2C 90F
Canefield, Dominica 31.1C 88F
Le Lamentin, Martinique 30.1C 86F 0.2mm
Le Raizet, Guadeloupe 30.3C 86F 0.2mm
Golden Rock, St Kitts 28.8C 84F
VC Bird, Antigua 29.0C 84F
San Juan, Puerto Rico 28.9C 84F trace

Hato, Curacao 32.1C 90F
Flamingo, Bonaire 30.8C 87F

Owen Roberts, Grand Cayman 28.5C 84F
Norman Manley, Jamaica 31.5C 89F
Sangster, Montego Bay, Jamaica 30.2C 86F
Santo Domingo, DR 33.2C 92F
Puerto Plata, DR 28.0C 82F
Nassau, Bahamas 26.8C 80F
Hamilton, Bermuda 20.3C 68F
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#4169 Postby Gustywind » Mon Apr 05, 2010 5:27 am

Good morning to all :) and happy easter too :wink:

000
FXCA62 TJSJ 050953
AFDSJU

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
553 AM AST MON APR 5 2010

.SYNOPSIS...THE SUB TROPICAL JET RUNS EAST-WEST OVER PUERTO RICO
AND THE U.S. VIRGIN ISLANDS AND UNDER A CUT-OFF LOW ABOUT 1370
MILES NORTHEAST OF PUNTA CANA. THE LOW MOVES EAST NORTHEAST BUT
THE JET PERSISTS OVER THE LOCAL AREA WEAKENING SLOWLY THROUGH
THURSDAY. ANOTHER BRANCH OF THE SUB TROPICAL JET RE-ENTERS LATER
IN THE WEEK...ONLY THIS TIME IN THE ATLANTIC WATERS NORTH OF THE
AREA. EARLY NEXT WEEK A TROUGH PASSES THROUGH THE AREA AND BRINGS
THIS JET CLOSER TO THE LOCAL AREA.

AT MID LEVELS...A CUT OFF LOW NOW NEAR 31 NORTH 49 WEST MOVES EAST
NORTHEAST AND IS ABSORBED INTO A POSITIVELY TILTED TROUGH MOVING
OUT OF CANADA MID WEEK...WHILE A TROUGH TRAILING THE LOW REMAINS
OVER PUERTO RICO AND THE U.S. VIRGIN ISLANDS. AT THE SAME TIME A
HIGH MOVES OUT OF SOUTHERN GEORGIA AND INTO THE WESTERN ATLANTIC
SO AS TO BE DUE NORTH OF THE AREA BY THURSDAY MORNING. AS ANOTHER
MID LATITUDE TROUGH MOVES THROUGH THE NORTHEASTERN UNITED STATES
IT CAUSES THE HIGH TO LEAN OVER AND FORM A RIDGE THAT EXTENDS OUT
OF THE SOUTHWEST CARIBBEAN...ACROSS PUERTO RICO AND INTO THE
CENTRAL ATLANTIC SATURDAY THROUGH MONDAY. ON SUNDAY A WEAK LOW
FORMS OVER FLORIDA...ACCORDING TO THE GFS AND MOVES ACROSS THE
BAHAMAS EARLY IN THE WEEK.

AT LOWER LEVELS...MOIST AIR CIRCULATING AROUND A LOW NEAR 32 NORTH
49 WEST IS BRINGING PATCHY CLOUDS AND ISOLATED SHOWERS TO THE
LOCAL AREA. BANDS OF MOISTURE ASSOCIATED WITH THIS RECEDING LOW
WILL CONTINUE TO STRETCH ACROSS THE AREA...FADING AS THEY DO
SO...THROUGH FRIDAY. AFTER FRIDAY A SECOND FRONT IS FORECAST TO
EXIT FLORIDA AND PULL UP AN INVERTED TROUGH WEST OF THE AREA
SATURDAY. IT WILL REACH CUBA BUT REVERSE COURSE AND RETURN TO THE
LOCAL AREA ON WEDNESDAY IF GFS SOLUTION CAN HOLD THAT LONG.


&&

.DISCUSSION...ISOLATED SHOWERS IN THE MOISTURE FROM THE NORTH
BROUGHT A LITTLE OVER TWO TENTHS OF AN INCH OF RAIN TO SAINT
THOMAS AND LIKELY LESS TO THE PUERTO RICAN MAINLAND. THIS FLOW IS
EXPECTED TO CONTINUE AS BANDS OF MOISTURE MOVE ACROSS THE
AREA...ALTHOUGH THE CHANCES FOR MEASURABLE RAIN OVER LAND DURING
THE AFTERNOON HOURS ARE SLIGHT. ISOLATED SHOWERS WILL CONTINUE AS
TROUGHINESS ENHANCES MOISTURE CONVERGENCE OVER THE LOCAL
AREA...MAINLY OVER EASTERN PUERTO RICO DURING THE EARLY MORNING
HOURS. SHOWERS MAY BECOME SCATTERED AFTER TODAY OVER WESTERN
PUERTO RICO DURING THE AFTERNOON HOURS. CONDITIONS APPEAR TO
BECOME WETTER OVER THE CARIBBEAN ON THE WEEKEND WITH SOME SHOWER
ACTIVITY IN AN EASTERLY MOVING INVERTED TROUGH THAT FORMS WITH THE
APPROACH OF A PRE-FRONTAL CONVERGENCE ZONE OVER THE WEEKEND AHEAD
OF A FRONT THAT MOVES OUT OF FLORIDA ON SATURDAY MORNING. THIS
INVERTED TROUGH APPEARS TO BE PICKED UP BY A SHORT WAVE TROUGH
THAT MOVES OUT OF CUBA ON MONDAY AND PASSES THROUGH THE LOCAL AREA
ON TUESDAY. AFTER THE END OF THE WEEK MODEL RUNS BEGAN TO DIFFER
SIGNIFICANTLY SO TIMING AND INTENSITY MAY BE SUBJECT TO REVISIONS
LATER.


&&

.AVIATION...
VFR CONDITIONS EXPECTED ACROSS ALL THE LOCAL TAF SITES
FOR THE NEXT 24 HOURS WITH A VCSH POSSIBLE ACROSS
TJBQ...TJSJ...TIST...TNCM AND TKPK THROUGH 05/14Z. LOW LEVEL WINDS
WILL BECOME MORE NORTHEASTERLY TODAY AT 10 TO 20 KTS.

&&

.CLIMATE...APRIL 2010 IS STARTING OFF MUCH MORE SEASONABLE THAN THE
PAST SEVERAL MONTHS ACROSS THE LOCAL ISLANDS WITH TEMPERATURES
RUNNING JUST 1.1 DEGREES ABOVE NORMAL IN BOTH SAN JUAN AND CHARLOTTE
AMALIE. LAST MONTH TEMPERATURES AVERAGED 3.1 DEGREES ABOVE NORMAL IN
SAN JUAN FOR THE SECOND MONTH IN A ROW.
A RECAP OF MARCH 2010 CAN BE
FOUND BY VISITING http://WWW.WEATHER.GOV/SANJUAN AND CLICKING ON THE MARCH
2010 NEWS HEADLINE.

&&

.MARINE...SEAS REMAIN JUST BELOW SMALL CRAFT ADVISORY CRITERIA
UNTIL MID WEEK IN WAVES OF PERIODS IN THE 8 AND 9 SECOND RANGE.
SEAS INCREASE DUE TO WINDS AND BECOME MORE CHOPPY MID WEEK THROUGH
FRIDAY IN BOTH ATLANTIC AND CARIBBEAN WATERS AND SMALL CRAFT
ADVISORIES ARE EXPECTED THEN IN MOST WATERS.


&&

.FIRE WEATHER...RELATIVE HUMIDITIES WILL NEAR CRITICAL LEVELS IN
SOUTHERN PUERTO RICO SOUTH OF THE CORDILLERA CENTRAL AND IN THE
LOWLANDS OF EASTERN PUERTO RICO FROM SAN JUAN THROUGH CAGUAS AND
HUMACAO. DRY FUELS WILL BE MORE EASILY IGNITED AND BURN MORE
READILY TODAY...BUT CONDITIONS SHOULD GRADUALLY IMPROVE WEDNESDAY
THROUGH SATURDAY AS MOISTURE RETURNS. WINDS WILL INCREASE SLIGHTLY
THROUGH WEDNESDAY MAKING CONTROLLED BURNS HARDER TO MANAGE. A FEW
AREAS IN THE NORTHERN PART OF PUERTO RICO AND MOST OF SAINT THOMAS
HAVE ALREADY HAD WETTING RAINS.


&&

.PRELIMINARY POINT TEMPS/POPS...
SJU 85 72 84 73 / 10 20 20 20
STT 86 74 85 74 / 10 20 20 20

&&

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

$$

04/12
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#4170 Postby Gustywind » Mon Apr 05, 2010 5:29 am

Image
Image
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#4171 Postby Gustywind » Mon Apr 05, 2010 5:32 am

000
AWCA82 TJSJ 050819
RWSVI

WEATHER SUMMARY FOR THE U.S. VIRGIN ISLANDS
NATIONAL WEATHER SERVICE SAN JUAN PR
419 AM AST MON APR 5 2010

VARIABLY CLOUDY SKIES AND ISOLATED SHOWERS PASSED ACROSS THE U.S.
VIRGIN ISLANDS OVERNIGHT. JUST UNDER ONE QUARTER OF AND INCH OF
RAIN FELL AT THE CYRIL E KING AIRPORT ON SAINT THOMAS AND THE
WINDS WERE MAINLY NORTHEASTERLY AROUND 10 MPH.

AN AREA OF SURFACE HIGH PRESSURE ACROSS THE WESTERN ATLANTIC WILL
MAINTAIN LOCALLY BREEZY CONDITIONS ACROSS THE U.S. VIRGIN ISLANDS FOR
THE NEXT SEVERAL DAYS. SHOWER ACTIVITY WILL BE LIMITED...WITH
MAINLY QUICK PASSING NOCTURNAL SHOWERS EXPECTED THROUGH THE END OF
THE WEEK.

ACROSS THE REGIONAL WATERS...SEAS UP TO 6 FEET AND WINDS UP TO 21
KNOTS ARE EXPECTED TODAY AND SMALL CRAFTS ARE URGED TO EXERCISE
CAUTION ACROSS THE LOCAL WATERS.

$$

SR
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Re: Caribbean - Centralamerica Weather Thread

#4172 Postby cycloneye » Mon Apr 05, 2010 6:26 am

A very warm March in Puerto Rico / Virgin Islands

http://www.srh.noaa.gov/sju/?n=record100401

March 2010 was a month of extremes across Puerto Rico and the U.S. Virgin Islands. The month started off with several 90 degree days across the San Juan metropolitan area, followed by record cold temperatures and record precipitation - both associated with a cold front that stalled across the region over the first weekend of the month. However, dry weather quickly returned and temperatures rebounded to levels well above normal by the middle of the month. In fact, by the end of March, the average temperature of 80.7 degrees in San Juan and 80.9 degrees recorded at the airports on both Saint Thomas and Saint Croix, represented temperatures much more characteristic of May than March.

Over the course of the month, a total of 42 climate records were either tied or broken at the official reporting sites in San Juan, Saint Thomas and Saint Croix. The vast majority of these new records were record warm minimum temperatures - likely influenced by the above normal water temperatures that have been recorded across the local Atlantic and Caribbean waters for the past several months. Below is a summary of all the new climate records either tied or broken across the local islands during the month of March and a complete climate report for March 2010 can be found in the Local Data/Records section of our Climate web page under Local Climate Studies.
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Re: Caribbean - Centralamerica Weather Thread

#4173 Postby cycloneye » Mon Apr 05, 2010 1:48 pm

Afternoon Discussion by NWS San Juan

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
206 PM AST MON APR 5 2010

.SYNOPSIS...AN ELONGATED TROUGH WILL DOMINATE AT MID AND UPPER
LEVELS WHILE SURFACE RIDGE TO THE NORTHWEST MAINTAINS A DRY STABLE
REGIME THROUGH MID WEEK. AN INVERTED TROUGH PATTERN WILL DEVELOP
NEXT WEEKEND WITH WETTER AND MORE UNSTABLE CONDITIONS EXPECTED BY
THEN.

&&

.DISCUSSION...LATEST 12Z TJSJ SOUNDING REVEALED PW VALUES WENT UP
TO 1.1 INCHES...COMPARED TO 0.84 YESTERDAY AT THE SAME TIME. THIS
WAS PRIMARILY IN RESPONSE TO AND AREA OF LOW LEVEL MOISTURE WHICH
CAME FROM THE ATLANTIC WATERS AND MOVED EARLY THIS MORNING AND
THIS AFTERNOON ACROSS PUERTO RICO...PRODUCING CLOUDINESS OVER MUCH
OF PUERTO RICO...BUT SHOWER ACTIVITY WAS LIMITED MAINLY ACROSS THE
NORTHERN HALF OF PUERTO RICO. THE HEAVIEST SHOWERS WERE NOTED
ALONG THE NORTH COAST OF PUERTO RICO...BUT NO SIGNIFICANT RAINFALL
ACCUMULATION WAS OBSERVED WITH THIS ACTIVITY. COMPUTER MODELS
DID NOT AGREED FORECASTING THIS SCENARIO...WITH THE GFS SHOWING
BETTER CLOUD COVERAGE...MEANWHILE...THE LOCAL WRF MODEL DIDN`T
SHOWED TOO MUCH AT ALL. HOWEVER...COMPUTER MODELS AGREE FOR
TONIGHT AND TOMORROW...SHOWING ANOTHER PATCH OF MOISTURE WILL MOVE
ACROSS THE LOCAL AREA OVERNIGHT AND EARLY TUESDAY...WHICH IS
EXPECTED TO PRODUCE THE SAME WEATHER AS WE SAW TODAY. AFTER THIS
AREA OF MOISTURE...INTERVALS OF DRIER AIR WILL MOVE OVER THE LOCAL
REGION...WHICH WILL INHIBITED THE CHANCES FOR PRECIPITATION AND
CLOUD COVERAGE. THE MAIN WEATHER FEATURE WHICH IS DOMINATING THE
LOCAL AREA IS A HIGH PRESSURE SYSTEM WHICH IS EXPECTED TO PERSIST
AT LEAST THROUGH MID WEEK. THEREFORE...DON`T EXPECT TOO MUCH IN
TERM OF CONVECTION ACROSS THE LOCAL ISLANDS...EXCEPT FOR THE
AFOREMENTIONED PATCHES OF MOISTURE THAT COULD AFFECT THE LOCAL
REGION FROM TIME TO TIME.

IN THE LONG TERM...COMPUTER MODELS SUGGEST AN INVERTED TROUGH
PATTERN WILL DEVELOP NEXT WEEKEND WITH WETTER AND MORE UNSTABLE
CONDITIONS EXPECTED BY THEN.

&&

.AVIATION...MVFR CIGS TONIGHT AT TJSJ/TIST/TISX WITH VCSH. CIGS
LIFTING TO VFR AFTER 14Z.

&&

.FIRE WEATHER...INCREASING MOISTURE/RH VALUES WILL MITIGATE FIRE
DANGER THREAT FOR THE NEXT FEW DAYS. MORE SIG WETTING RAINS POSSIBLE
THIS WEEKEND.


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Re: Caribbean - Centralamerica Weather Thread

#4174 Postby cycloneye » Mon Apr 05, 2010 2:37 pm

For those who may not know this,the first post of this thread has a kind of tour feeling as there are many web cams from many islands in the Caribbean.Also there are web cams from Centralamerica like in the Panama Canal where you can see two of the gates of the canal and another from El Salvador so pay a visit to the first post of this thread to get a free tour :)
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#4175 Postby Gustywind » Mon Apr 05, 2010 5:52 pm

- Updates from the Islands -
- - St.Maarten/St.Martin -
-

- SxmGIS - Sxm delegation attends National Hurricane Conference
By Roddy Heyliger <roddyheyliger at yahoo.com>
Date: Mon, 5 Apr 2010 12:25:46 -0700 (PDT)

News Release


Written by Roddy Heyliger, Government Information Service (GIS), Ennia Bldg., Longwall Rd., Philipsburg, Sint Maarten D.W.I. Tel. 00-599-543-1162, 542-4119, Fax: 543-1169; Email: gis at sintmaarten.net;



For Immediate Release: Monday, April 05, 2010/N045



Sint Maarten delegation attends National Hurricane Conference



GREAT BAY, Sint Maarten (GIS) – A delegation of civil servants returned over the weekend after attending the 2010 National Hurricane Conference (NHC) in Orlando Florida.



According to Head of the Disaster Management Office Paul Martens, deliberations at the conference focused on lessons learned from hurricane strikes; state of the art programs worthy of emulation; and new ideas being tested or considered.



Other members of the delegation were: Fire Chief & Disaster Coordinator Winston Salomon, Sector ROB Beheer Edelmiro Jansen and Benjamin Ortega.



The main focus for disaster management officials were the tropical islands sessions, where presentations were given on hurricane experiences, coastal management, tsunami issues, and community disaster planning.



Disaster officials from Sint Maarten gave a presentation during the aforementioned sessions on the system of disaster management in the Dutch Caribbean. Sint Maarten is also co-chair of the Topic Committee Tropical Islands/Latin America.



A session that focused on fire departments was also attended.



Jansen and Ortega attended sessions related to engineering, recovery, debris management etc.



The primary goal of the NHC is to improve hurricane preparedness, response, recovery, and mitigation in order to save lives and property in the United States and the tropical islands of the Caribbean and Pacific.



In addition, the conference serves as a national forum for federal, state and local officials to exchange ideas and recommend new policies to improve Emergency Management.



Conference delegates also discussed information about new or ongoing assistant programs; the ABC’s of hurricane preparedness, response, recovery and mitigation – in recognition of the fact that there is a continual turnover of emergency management leadership and staff.



Also attending from Sint Maarten was Roy Richardson from telecommunications provider UTS/Caribserve. He gave a presentation on telecommunications in hurricanes and other disasters during the tropical islands sessions.



The conference ran from March 29 to April 2 and took place at Hilton, Orlando.



PHOTO CUTLINE: Left to right, Edelmiro Jansen, Paul Martens, Winston Salomon and Benjamin Ortega.
Image


# # #/10-045



Roddy Heyliger

Sint Maarten Government Information Service (GIS)


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#4176 Postby Gustywind » Mon Apr 05, 2010 5:53 pm

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Re: Caribbean - Centralamerica Weather Thread

#4177 Postby Macrocane » Mon Apr 05, 2010 7:19 pm

It's raining right now in San Salvador and other parts of the country, strong convection has developed in Guatemala too. It feels like it is June and not April even the maximum temperatures have been cooler than normal in some places. The max in some cities:

Santa Ana, El Salvador 32.4°C/90.3°F
San Salvador, El Salvador 31.1°C/88°F
San Miguel, El Salvador 39.2°C/102.6°F
Guatemala, Guatemala 26°C/79°F
Tegucigalpa, Honduras 30°C/86°F
Managua, Nicaragua 33°C/91°F
San Jose, Costa Rica 32°C/90°F
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Re: Caribbean - Centralamerica Weather Thread

#4178 Postby tropicana » Mon Apr 05, 2010 8:13 pm

Regional Weather Summary
Mon Apr 05 2010

Today's Highs and rain (if any)

Piarco, Trinidad 35.0C 95F **42nd cons. day at or over 33.7C 93F (since Feb 23)**
Crown Point, Tobago 32.3C 90F
Point Salines, Grenada 31.3C 88F
Grantley Adams, Barbados 31.2C 88F
Arnos Vale, St Vincent 32.0C 90F
Hewanorra, St Lucia 31.9C 90F
Vigie, St Lucia 29.8C 86F 5.2mm
Melville Hall, Dominica 28.9C 84F 18.3mm
Canefield, Dominica 32.2C 90F
Le Lamentin, Martinique 30.7C 87F trace
Le Raizet, Guadeloupe 28.6C 84F
Golden Rock, St Kitts 28.5C 84F
VC Bird, Antigua 29.4C 85F
St Thomas VI 29.4C 85F
San Juan, Puerto Rico 27.8C 82F trace


Hato, Curacao 30.3C 86F 0.4mm
Flamingo, Bonaire 30.3C 86F

Owen Roberts, Grand Cayman 29.1C 84F
Norman Manley, Jamaica 32.1C 90F
Sangster, Montego Bay, Jamaica 30.3C 86F
Santo Domingo, DR 33.8C 93F
Puerto Plata, DR 30.4C 86F
Havana, Cuba 28.8C 84F
Nassau, Bahamas 26.8C 80F
Hamilton, Bermuda 20.2C 68F trace
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Re: Caribbean - Centralamerica Weather Thread

#4179 Postby cycloneye » Mon Apr 05, 2010 8:19 pm

:uarrow: The drought continues for the islands in the Caribbean.Hopefully,the pattern to a more moist enviroment comes soon as normally by mid April and beyond,the rainy season starts. As I posted earlier in the thread,also it has been very warm in the islands with many records of high temperatures broken for January,Febuary and March.
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Re: Caribbean - Centralamerica Weather Thread

#4180 Postby tropicana » Mon Apr 05, 2010 8:24 pm

cycloneye wrote::uarrow: The drought continues for the islands in the Caribbean.Hopefully,the pattern to a more moist enviroment comes soon as normally by mid April and beyond,the rainy season starts. As I posted earlier in the thread,also it has been very warm in the islands with many records of high temperatures broken for January,Febuary and March.



i know luis! i read that report of the 42 records broken in the Puerto Rico/Virgin Islands district in March 2010! Amazing, what a historical dry season for the Eastern Caribbean especially. Day after day after day, Yes a few days when you get some spotty showers and some hope, like the 18mm of rain in Dominica today.

For the drought to truly end, there needs to be many more days of 18mm + rainfall days. Then the heat is the other story, with no real relief, especially for those folks in Trinidad enduring record heat day after day after day.
Nature has a way sometimes of balancing itself out...we will see. With the hurricane season on the doorstep and plenty of warm water out there, time will tell what is in store for the islands.
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