1 flash flood, as filed by the National Weather Service.
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 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 Sep 23, 6:05 AM AST, 8 hours 59 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JUAN PR 605 AM AST SAT SEP 23 2006 .DISCUSSION... SOMEWHAT COMPLEX UPPER LEVEL PATTERN FROM THE E CARIB INTO THE CENTRAL ATLC THIS MORNING AS TUTT AXIS FROM S AMERICA NE INTO THE CENTRAL ATLANTIC SHIFTS WWD...AND DOUBLE VORTS NORTH OF THE NE CARIB SHIFT SW NEXT 24 HOURS AND GRADUALLY MERGE INTO NEWLY ALIGNED TUTT AXIS. ALTHOUGH THE VORTS SINKING SW INTO THE LOCAL AREA ATTM ARE PRESENTLY BRINGING DRIER AIR ALOFT...BEST UPPER CONVERGENCE AND SINKING MOTIONS SHOULD SHIFT FAR W OF THE LOCAL AREA WITH UNSTABLE CONDITIONS ALOFT EXPECTED TO PREVAIL THIS AFTERNOON ACROSS PR AND HISPANIOLA. MILD ENE LLVL FLOW WILL ADVECT AMPLE LLVL MOISTURE INTO THE AREA TODAY AND RESPOND TO DIURNAL PROCESSES TO INDUCE ANOTHER DAY OF REASONABLY ACTIVE AFTERNOON- EARLY EVENING WEATHER. INCREASE IN LLVL FLOW TO 10-15 KNOTS FROM PREVIOUS DAY SWILL AID IN STRONGER LLVL FORCING. WEAK LLVL TROFFING TRAILING FROM THE SW PERIPHERY OF HELENE INTO THE OFFSHORE ATLC WILL LIFT OUT TONIGHT AND ALLOW FOR W ATLC HIGH TO BUILD WEAKLY INTO THE REGION...WITH LLVL WINDS SLOWLY VEERING OVER THE NEXT FEW DAYS AS HIGH SHIFTS SE INTO THE CENTRAL ATLC. TROPICAL WAVE LIMPING SLOWLY W ALONG NEAR 57 WEST THIS MORNING WILL MOVE WNW INTO THE CARIB SUNDAY AND THEN NW ACROSS THE LOCAL AREA MONDAY-TUESDAY...AND BRING INCREASING DEEP LAYERED MOISTURE. TUTT AXIS WILL HAVE SHIFTED W AND NW BY THEN...AND WE WILL REMAIN ON THE S SIDE FOR MODERATELY UNSTABLE UPPER CONDITIONS THROUGH THE MIDDLE OF THE WEEK. AS THE TROPICAL WAVE FOLLOWS MEAN DEEP LAYERED STEERING FLOW AND MOVES NW INTO THE BAHAMAS BY MID WEEK...A DEEP LAYERED FLOW OF TROPICAL MOISTURE WILL TRAIL THE WAVE AND REMAIN ACROSS THE LOCAL AREA FOR HIGH RAIN CHANCES. NEXT TROPICAL WAVE COMPLEX CURRENTLY ACROSS CENTRAL ATLC IS FORECAST BY GLOBAL MODELS TO BE PULLED NNW AND THEN WNW AND LIFT LARGELY OUT OF THE LOCAL REGION. HOWEVER... THIS WAVE HAS/HAD A DOUBLE VORT STRUCTURE...AND I AM STILL NOT SOLD ON ENTIRE WAVE LIFTING COMPLETELY OUT OF TROPICS. WILL HAVE TO WAIT AND SEE HOW THIS EVOLVES TO SEE HOW LITTLE MOISTURE AND ENERGY FROM THIS WAVE MAKES IT INTO THE LOCAL AREA THURSDAY-FRIDAY. GFS HAS CONTINUED SPIN UP WAVE JUST OFF W AFRICA TO VARIOUS DEGREES OF INTENSITY PAST MANY RUNS...BUT CONTINUES TO BRING THAT WAVE OR A TROPICAL LOW INTO THE NE CARIB NEXT WEEKEND. THIS BEARS WATCHING. BOTTOM LINE TO THIS RANTING IS THAT WE HAVE BEGUN TO TRANSITION FROM A DRY PATTERN FROM THE PAST WEEK...INTO A WET PATTERN WITH SOME POTENTIAL FOR BRIEF PERIODS OF HEAVY TROPICAL RAINS THROUGHOUT THE NEXT SEVERAL DAYS. ADDITIONALLY...THE TROPICAL ATLANTIC IS NOT YET DONE MANUFACTURING TROPICAL SYSTEMS THIS YEAR...AND WE THUS NEED TO KEEP A VIGILANT MINDSET. MARINE CONDITIONS WILL REMAIN IN NORMAL THRESHOLDS FOR THE NEXT SEVERAL DAYS WITH LIGHT TO MODERATE TRADE WINDS AND SMALL TO MODERATE ATLANTIC SWELL ACTION. && .PRELIMINARY POINT TEMPS/POPS... SJU 90 78 91 78 / 30 30 30 20 STT 87 77 88 77 / 30 40 40 40 && .SJU WATCHES/WARNINGS/ADVISORIES... PR...NONE. VI...NONE. && 70
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN JUAN PR 600 AM AST SAT SEP 23 2006 PRZ001>013-AMZ710>750-241000- 600 AM AST SAT SEP 23 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO. .TODAY AND TONIGHT... SCATTERED AFTERNOON SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP ONCE AGAIN TODAY...MAINLY ACROSS THE INTERIOR AND SOUTHWEST SECTIONS OF THE ISLAND. ALTHOUGH WIDESPREAD FLOODING IS NOT EXPECTED...SHOWERS AND THUNDERSTORMS WILL MOVE SLOWLY...AND A FEW LOCATIONS WILL RECEIVE ENOUGH RAINFALL TO RESULT IN URBAN AND SMALL STREAM FLOODING. MARINE CONDITIONS ARE EXPECTED TO REMAIN RATHER TRANQUIL TODAY...WITH WINDS OF 15 KNOTS OR LESS AND SEAS OF 4 FEET OR LESS. .DAYS TWO THROUGH SEVEN...A TROPICAL WAVE NEAR 57 WEST THIS MORNING WILL MOVE WEST NORTHWEST INTO THE CARIBBEAN SUNDAY...AND THEN SLOWLY NORTHWESTWARD ACROSS THE LOCAL AREA EARLY MONDAY THROUGH TUESDAY...BRINGING ACTIVE WEATHER TO THE AREA. ABUNDANT TROPICAL MOISTURE AND ACTIVE WEATHER IS EXPECTED TO PREVAIL ACROSS THE LOCAL AREA THROUGH WEDNESDAY BEHIND THIS EXITING TROPICAL WAVE. NO OTHER HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY. VIZ001-002-AMZ710>730-241000- 600 AM AST SAT SEP 23 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE U.S. VIRGIN ISLANDS. .TODAY AND TONIGHT...SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS WILL CONTINUE TO MOVE FROM THE ATLANTIC COASTAL WATERS...AFFECTING FROM TIME TO TIME THE LOCAL ISLANDS. MILD NORTHEASTERLY LOW LEVEL WINDS WILL CONTINUE TO TRANSPORT SUFFICIENT LOW LEVEL MOISTURE INTO THE AREA TODAY AND WILL COMBINE WITH DAYTIME HEATING AND LOCAL TERRAIN EFFECTS...TO PRODUCE ISOLATED TO SCATTERED AFTERNOON SHOWERS AND THUNDERSTORMS ACROSS ISLANDS AND THEIR COASTAL WATERS. MARINE CONDITIONS ARE EXPECTED TO REMAIN RATHER TRANQUIL TODAY...WITH WINDS OF 15 KNOTS OR LESS AND SEAS OF 4 FEET OR LESS. .DAYS TWO THROUGH SEVEN...A TROPICAL WAVE NEAR 57 WEST THIS MORNING WILL MOVE WEST NORTHWEST INTO THE CARIBBEAN SUNDAY...AND THEN SLOWLY NORTHWESTWARD ACROSS THE LOCAL AREA EARLY MONDAY THROUGH TUESDAY...BRINGING ACTIVE WEATHER TO THE AREA. ABUNDANT TROPICAL MOISTURE AND ACTIVE WEATHER IS EXPECTED TO PREVAIL ACROSS THE LOCAL AREA THROUGH WEDNESDAY BEHIND THIS EXITING TROPICAL WAVE. NO OTHER HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED 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
1 flash flood. Local standard time, as filed.
USGS river level sensor indicated that the water levels along river Rio Grande de Arecibo in Adjuntas at Highway 135 and the river Rio Pellejas were above flood stage 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, September 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 2026-09-30. Each event’s entry at NCEI: 5533777.