Isolated showers and thunderstorms developed over interior Puerto Rico during the afternoon and diminished quickly after sunset. The heaviest rainfall fell over sections of Lares and Utuado municipalities, where over four inches of rain fell in isolated locations, causing River Guajataca in Lares to crest above flood stage early in the evening.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS SJU wrote it up.
Isolated showers and thunderstorms developed over interior Puerto Rico during the afternoon and diminished quickly after sunset. The heaviest rainfall fell over sections of Lares and Utuado municipalities, where over four inches of rain fell in isolated locations, causing River Guajataca in Lares to crest above flood stage early in the evening.
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 Nov 18, 3:22 PM AST, 1 hour 19 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JUAN PR 322 PM AST SAT NOV 18 2006 .DISCUSSION...SATELLITE IMAGERY THIS AFTERNOON SHOWED ONLY PATCHY CLOUDS OVER THE LOCAL AREA. THE LIMITED PRECIPITATION OBSERVED WAS ASSOCIATED TO THE ISLANDSS LOCAL TOPOGRAPHY EFFECTS. STREAMERS OF CLOUDS WERE NOTED ELONGATED FROM SOUTHEAST TO NORTHWEST IN RESPONSE TO THE SOUTHEAST LOW LEVEL WIND FLOW. 12Z SOUNDING SHOWED MOST OF THE MOISTURE CONFINED FROM THE SURFACE TO AROUND 700MB. AN AREA OF CLOUDS WAS NOTED EXTENDING FROM SOUTH OF CUBA ACROSS THE CENTRAL BAHAMAS AND THEN INTO THE ATLANTIC WATERS. THESE CLOUDS WERE ASSOCIATED TO A COLD FRONT MOVING VERY SLOWLY TOWARD THE SOUTHEAST. SATELLITE DERIVED WINDS INDICATED WIND SPEEDS HIGHER THAN 50 KNOTS IN THE 225MB TO 100MB LAYER. && .SYNOPSIS...A WEAK HIGH PRESSURE RIDGE WILL CONTINUE TO PROVIDE A LIGHT TO MODERATE EAST TO SOUTHEAST WIND FLOW THROUGH MONDAY. A COLD FRONT ACROSS THE WESTERN ATLANTIC EXTENDING ACROSS CUBA WILL CONTINUE TO MOVE EAST SOUTHEAST SLOWLY THIS EVENING. A LOW IS EXPECTED TO DEVELOP ALONG THE FRONT MONDAY WHICH SHOULD ALLOW THE FRONT TO PUSH INTO HISPANIOLA MONDAY NIGHT THROUGH TUESDAY. SEAS ARE EXPECTED TO BEGIN TO INCREASE LATER IN THE WEEK AS NORTHWEST SWELLS REACH OUR COASTAL WATERS STARTING WEDNESDAY EVENING. && .MARINE...LONG PERIOD SWELLS WILL START TO ARRIVE TO THE LOCAL AREA LATE WEDNESDAY ASSOCIATED TO THE COLD FRONT OVER CENTRAL CUBA AND CENTRAL BAHAMAS. AN INCREASE IN THE LIKELIHOOD OF SHOWERS IS EXPECTED BY MID OR LATE NEXT WEEK AS THE FRONT APPROACHES THE LOCAL AREA. && .HYDROLOGY...NO SIGNIFICANT WEATHER EVENTS ABLE TO PRODUCE SIGNIFICANT RAINFALL ARE EXPECTED IN THE NEAR FUTURE. && .CLIMATE...A GENERAL PICTURE WHICH INCLUDES COLD FRONT NORTHWEST OF THE REGION...TROPICAL WAVES FAR SOUTH OF THE LOCAL AREA SEEMS TO BE INDICATIVE OF A TRANSITION FROM A SUMMER WEATHER PATTERN TO A WINTER WEATHER PATTERN IN THE TROPICS. && .PRELIMINARY POINT TEMPS/POPS... SJU 75 88 75 88 / 10 30 20 30 STT 78 84 78 84 / 30 30 40 40 && .SJU WATCHES/WARNINGS/ADVISORIES... PR...NONE. VI...NONE. && 11
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN JUAN PR 600 AM AST SAT NOV 18 2006 PRZ001>013-AMZ710>750-191000- 600 AM AST SAT NOV 18 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO. .TODAY AND TONIGHT... MOISTURE IS LIMITED TODAY...SO SHOWERS THAT FORM IN THE INTERIOR AND NORTHWEST PORTION OF THE ISLAND ARE NOT EXPECTED TO PRODUCE SIGNIFICANT FLOODING. SEAS WILL BE PEAKING TODAY AND SOME RIP CURRENTS ARE TO BE EXPECTED ALONG SHORES OPEN TO THE ATLANTIC. .DAYS TWO THROUGH SEVEN...A GRADUAL INCREASE IN MOISTURE CAN BE EXPECTED ACROSS THE AREA WHICH WILL PEAK WEDNESDAY AND THURSDAY. ALTHOUGH VERY LOCALIZED NUISANCE FLOODING COULD OCCUR ANY AFTERNOON IN THE INTERIOR NORTHWEST IN A HEAVY SHOWER...IT IS MORE LIKELY ON WEDNESDAY AND THURSDAY. RIP CURRENTS CAN CONTINUE THROUGH TOMORROW...SUNDAY. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED TODAY. VIZ001-002-AMZ710>730-191000- 600 AM AST SAT NOV 18 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE U.S. VIRGIN ISLANDS. .TODAY AND TONIGHT... SEAS IN THE ATLANTIC WILL PEAK TODAY AND MODERATE RIP CURRENTS ARE POSSIBLE ALONG THE NORTHERN AND NORTHEASTERN COASTS. NO OTHER HAZARDOUS WEATHER IS EXPECTED. .DAYS TWO THROUGH SEVEN... THE DANGER OF MODERATE RIP TIDES WILL CONTINUE ON SUNDAY...BUT NO OTHER HAZARDOUS WEATHER IS EXPECTED. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED TODAY. STAY TUNED TO NOAA WEATHER RADIO AND OTHER LOCAL MEDIA FOR FURTHER DETAILS OR UPDATES. FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE WEB SITE FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS AT (ALL LOWERCASE LETTERS): HTTP://WWW.SRH.NOAA.GOV/SJU. FROM YOUR PDA/PHONE: HTTP://MOBILE.SRH.NOAA.GOV OR WWW.SRH.NOAA.GOV/WML
The national radar mosaic for the moment the first event began.
1 flash flood. Local standard time, as filed.
USGS river level sensor at Lares indicated that the water levels along the Guajataca River in Lares were above flood stage of 13 feet and rising.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Puerto Rico in 2006Every state in 2006This day in weather historyWarnings in Puerto Rico, November 2006
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: 5407.