An upper level trough combined with daytime heating and local effects to produced scattered showers over the eastern section of Puerto Rico.
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The episode as NWS SJU wrote it up.
An upper level trough combined with daytime heating and local effects to produced scattered showers over the eastern section of Puerto Rico.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS San Juan, PR wrote its last area forecast discussion before the first event at Jun 8, 3:41 PM AST, 1 hour 49 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JUAN PR 341 PM AST SUN JUN 8 2014 .SYNOPSIS...AT UPPER LEVELS...A TROUGH NORTH OF HISPANIOLA WILL PASS NORTH OF THE LOCAL AREA ON MONDAY. THEN FOR THE REMAINDER OF THE WEEK HIGH PRESSURE WILL BUILD OVER THE CENTRAL CARIBBEAN AND SHIFT SLIGHTLY WEST EARLY NEXT WEEK. AT MID LEVELS...THE NOSE OF A HIGH PRESSURE FROM THE TROPICAL ATLANTIC WILL CONTINUE OVER THE EASTERN CARIBBEAN. THEN GRADUALLY HIGH PRESSURE WILL ALSO BUILD OVER HISPANIOLA...APPEARING AND THEN DISAPPEARING SEVERAL TIMES DURING THE NEXT SEVEN DAYS. MID LEVELS REMAIN MOSTLY DRY EXCEPT FOR A BRIEF PERIOD NEXT SUNDAY. AT LOWER LEVELS...HIGH PRESSURE OVER THE CENTRAL ATLANTIC WILL DRIFT EASTWARD DURING THE WEEK BUT A SECOND AND WEAKER HIGH IN THE WESTERN ATLANTIC WILL BUILD NORTH OF THE AREA...MAINTAINING THE TRADE WIND FLOWS. && .DISCUSSION...A SLOT OF DRIER AIR MOVED THROUGH THE FORECAST AREA THIS MORNING AND SUPPRESSED MUCH OF THE SHOWER ACTIVITY...ALTHOUGH SOME RAIN ACCUMULATIONS WERE REGISTERED IN THE EASTERN QUARTER OF PUERTO RICO AND AROUND THE U.S. VIRGIN ISLANDS. A BAND OF MOISTURE ORIENTED SOUTHWEST TO NORTHEAST WAS MOVING THROUGH THE WATERS BETWEEN SAINT CROIX AND PUERTO RICO AS OF 08/19Z AND HEAVIER SHOWERS WERE BEGINNING TO APPEAR. SO IT LOOKS LIKE THE CONVECTIVE WEATHER WILL GET A LATE START IN THE AREA TODAY...BUT THAT WE WILL STILL GET SOME MORE RAIN BEFORE THE BAND MOVES AWAY LATER TONIGHT...THIS WOULD INCLUDE THE SAN JUAN METROPOLITAN AREA. THE GFS HAS POSTPONED THE NEXT MAXIMUM OF MOISTURE UNTIL AFTER MONDAY AND SO HAVE BACKED OFF SOME OF THE PREVIOUSLY HIGHER POPS IN THIS MORNINGS FORECAST FOR MONDAY. MOISTURE ON TUESDAY IS ALSO LESS. BUT MOISTURE DECLINES CONSIDERABLY TUESDAY NIGHT THROUGH SATURDAY MORNING AND IT IS EXPECTED THAT THIS DRYING TREND WILL ALSO RESULT IN FEWER SHOWERS AND CLOUDS. THIS ALSO SQUARES WITH THE RIDGE THAT WILL BUILD OVER THE AREA DURING THE WEEK AND SUPPLY NORTHERLY FLOW OVER PUERTO RICO AND THE U.S. VIRGIN ISLANDS THROUGH THE UPCOMING WEEKEND. && .AVIATION...VFR CONDITIONS WILL PREVAIL ACROSS TAF SITES THROUGH THE FORECAST PERIOD...EVEN WITH SOME BRIEF VCSH AND ISOLD -SHRA THIS AFTERNOON. LOW LEVEL WIND FLOW WILL BE MAINLY ESE AT 10 TO 20 KTS WITH HIGHER GUSTS INTO THE EVE...THEN TAPERING OFF TO LESS THAN 10 KTS OVERNIGHT. && .MARINE...SEAS WILL DIMINISH THROUGH THURSDAY IN THE ATLANTIC AND SHOULD DROP BELOW 6 FEET SOON. SEAS IN THE CARIBBEAN WILL BEGIN A GRADUAL INCREASE TONIGHT THROUGH FRIDAY. SMALL CRAFT ADVISORIES ARE NOT EXPECTED IN OUR LOCAL WATERS THROUGH THE UPCOMING WEEKEND. && .FIRE WEATHER...RELATIVE HUMIDITIES DIPPED CLOSE TO CRITICAL LEVELS NEAR CAMP SANTIAGO THIS AFTERNOON REACHING A MINIMUM OF 48 PERCENT. WINDS REACHED 17 MPH WITH HIGHER GUSTS. THIS AREA IS...FOR THE PRESENT...THE MOST VULNERABLE TO...EASY IGNITION. CONDITIONS WILL CHANGE VERY LITTLE TOMORROW. WETTING RAINS ARE POSSIBLE ALONG PUERTO RICO'S SOUTH COAST...BUT ARE NOT CONSIDERED TO BE LIKELY DURING THE NEXT SEVERAL DAYS. && .PRELIMINARY POINT TEMPS/POPS... SJU 77 89 78 88 / 30 30 40 40 STT 78 88 79 89 / 30 10 40 40 && .SJU WATCHES/WARNINGS/ADVISORIES... PR...NONE. VI...NONE. COASTAL WATERS...NONE. && 15/12
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN JUAN PR 559 AM AST SUN JUN 8 2014 AMZ710>745-PRZ001>013-091000- SAN JUAN AND VICINITY-NORTHEAST-SOUTHEAST-EASTERN INTERIOR- NORTH CENTRAL-CENTRAL INTERIOR-PONCE AND VICINITY-NORTHWEST- WESTERN INTERIOR-MAYAGUEZ AND VICINITY-SOUTHWEST-CULEBRA-VIEQUES- THE NEARSHORE AND OFF SHORE ATLANTIC AND CARIBBEAN COASTAL WATERS- 559 AM AST SUN JUN 8 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO AND THE ADJACENT ATLANTIC COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY MID-UPPER LEVEL RIDGE WILL BECOME INCREASINGLY DOMINANT TUESDAY THROUGH THE END OF NEXT WEEK AND LEAD TO LARGE SCALE SUBSIDENCE AND SIGNIFICANT DRYING. ELEVATED FIRE DANGER WILL BE POSSIBLE TUESDAY THROUGH THE END OF THE WEEK ACROSS THE SOUTH COASTAL PLAIN...MONA AND VIEQUES ISLANDS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. AMZ715-725-VIZ001-002-091000- ST. THOMAS ST. JOHN ADJACENT ISLANDS-ST CROIX- NEARSHORE ATLANTIC AND ADJACENT CARIBBEAN COASTAL WATERS- 559 AM AST SUN JUN 8 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE U.S. VIRGIN ISLANDS AND THE ADJACENT COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
The San Juan radar (TJUA), 41 km away, was scanning. The volume nearest the first event began at 21:32 UTC.
1 flash flood. Local standard time, as filed.
There were 15 people stranded on rocks at Barrio Naranjal in Charco Frio.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Puerto Rico in 2014Every state in 2014This day in weather historyWarnings in Puerto Rico, June 2014
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 530486.