Name: Heavy Rain in Puerto Rico, June 4, 2003
Start: 2003-06-04T21:45
End: 2003-06-04T22:15
Location: Puerto Rico

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 1

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.

What happened

The episode as NWS SJU wrote it up.

A line of heavy showers moved across the San Juan Metro area producing gusty winds and low visibilities. The NWS ASOS site at Luis Munoz Marin International Airport recorded a gust of 53 mph at 2156 AST.

What forecasters said that day

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 4, 9:25 PM AST, 20 minutes earlier.

Area forecast discussion, Jun 4, 9:25 PM AST, 20 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
925 PM AST WED JUN 4 2003

.SHORT TERM UPDATE...
NO CHANGES MADE TO SHORT TERM FORECAST PRODUCTS TONIGHT. KEEPING AN
EYE ON SMALL AREA OF HEAVY SHOWERS WHICH HAS JUST RECENTLY DEVELOPED
ACROSS PARTS OF THE SAN JUAN METRO AREA. OTHERWISE...REMAINDER OF
NIGHT EXPECT SCATTERED SHOWERS EAST PR AND THE U.S. VIRGIN ISLANDS
AS MOISTURE BEGINS TO INCREASE SLOWLY FROM THE EAST. /DG

.500 PM DISCUSSION...
LESS ACTIVE WEATHER THAN YESTERDAY. SCATTERED SHOWERS ARE AFFECTING
THE MUNICIPALITIES OF MAYAGUEZ...ANASCO AND RINCON. TONIGHT CLEAR
SKIES WILL DOMINATE OUR SKIES THROUGH MIDNIGHT. AN INCREASE ON
MOISTURE IS EXPECTED AFTER MIDNIGHT WHEN A LOW LEVEL PERTURBATION
SOUTHEAST OF PUERTO RICO WILL CONTINUE TO MOVE WEST ACROSS THE
CARIBBEAN WATERS TONIGHT AND TOMORROW MORNING. WE SHOULD EXPECT AN
INCREASE ON SHOWERS TONIGHT FOR ST CROIX...SOUTHEAST AND SOUTH COAST
OF PUERTO RICO. ON THURSDAY MOISTURE LEFT BEHIND BY THIS SYSTEM WILL
COMBINE WITH UPPER LEVEL DYNAMIC ASSOCIATED TO THE UPPER LEVEL
TROUGH TO PRODUCE MORE ACTIVE WEATHER AFTERNOONS.

.SJU...
.PR...NONE.
.VI...NONE.

EQUIPMENT: WSR-88D CHANNEL 2 HAD PREVENTATIVE MAINTENANCE PERFORMED
MONDAY MORNING. CHANNEL 1 STILL INOPERATIVE. SOME REPLACEMENT
PARTS FOR ITS TRANSMITTER HAVE ARRIVED AND OTHERS ARE STILL ON ORDER.

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS GONE GRAPHICAL TAKE A
LOOK AT OUR NEW GRAPHICAL FORECAST AT:
    HTTP://WWW.SRH.NOAA.GOV/DATA/IFPS/SJU/GFE  (ALL LOWER CASE)
ADDITIONAL IMAGES ARE ON THE WAY

WRITTEN TEXT FORECASTS (IN ENGLISH OR SPANISH)...SATELLITE IMAGERY
...DOPPLER RADAR DATA...AND A VIRTUAL LIBRARY OF WEATHER INFORMATION
CAN BE FOUND AT THE NWS SAN JUAN WEB SITE AT:
    HTTP://WWW.SRH.NOAA.GOV/SJU (ALL LOWER CASE).

Hazardous weather outlook, Jun 4, 6:05 AM AST, 15 hours 40 minutes before

PRZ001>013-VIZ001-002-AMZ710>750-042200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN JUAN PR
605 AM AST WED JUN 4 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO.

.TODAY AND TONIGHT...SCATTERED TO NUMEROUS SHOWERS SOME OF THEM VERY
HEAVY ARE POSSIBLE...MAINLY OVER THE WESTERN INTERIOR AND NORTHWEST
SECTIONS OF PUERTO RICO THIS AFTERNOON AND EARLY EVENING.
CONSEQUENTLY MINOR URBAN AND SMALL STREAM FLOODING IS POSSIBLE.

.SPOTTER CALL TO ACTION STATEMENT...
SPOTTER ACTIVATION IS NOT ANTICIPATED.

.WEDNESDAY THROUGH MONDAY...SIMILAR WEATHER PATTERN WILL CONTINUE
WITH THE POSSIBILITY OF SOME URBAN AND SMALL STREAM FLOODING IN THE
AFTERNOON INTERIOR AND WEST SECTIONS ESPECIALLY THURSDAY AND FRIDAY.

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE U.S. VIRGIN ISLANDS.

.TODAY AND TONIGHT...SCATTERED PASSING SHOWERS ARE EXPECTED.

.SPOTTER CALL TO ACTION STATEMENT...
SPOTTER ACTIVATION IS NOT ANTICIPATED.

.WEDNESDAY THROUGH MONDAY...NO HAZARDOUS WEATHER IS EXPECTED.

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.

Event by event

1 heavy rain. Local standard time, as filed.

Heavy Rain, San Juan and Vicinity

When: June 4, 9:45 PM AST to 10:15 PM AST
Where: San Juan and Vicinity County, Carolina
Reported by: AWOS,ASOS,MESONET,ETC

What these are

Heavy Rain: Rainfall totals unusual for the place and season that did not produce a flood.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Puerto Rico in 2003 Every state in 2003 This day in weather history Warnings in Puerto Rico, June 2003

Sources

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: 5365192.