Alert archive / Puerto Rico / Flash Flood Warnings in 2004

Flash Flood Warning 42, NWS JSJ

June 9, 2004

NWS JSJ issued this flash flood warning at Jun 9, 2004, 10:27 PM CDT. It was in force for 19 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 9, 2004, 10:27 PM CDT (03:27 UTC)
Expired: Jun 10, 2004, 5:30 PM CDT
In force: 19 hr
Issued by: NWS JSJ
Area: Counties, with a storm outline in the text

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGCA52 TJSJ 100331
FFWSJU
PRC119-100630-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
1127 PM AST WED JUN 9 2004

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* A FLASH FLOOD WARNING FOR THE FOLLOWING MUNICIPALITY
  IN PUERTO RICO
     RIO GRANDE

* UNTIL 230 AM AST

* AT 1120 PM AST EMERGENCY MANAGEMENT REPORTED FLASH FLOODING IN RIO 
GRANDE. HIGHWAY NUMBER 956 IS CLOSED TO TRAFFIC. SOME RESIDENCES 
WERE FLOODED IN THE AREA OF RIVER VALLEY IN SECTOR CAMBALACHE.

THIS WARNING INCLUDES ALL RIVERS AND STREAMS AND THEIR TRIBUTARIES IN
THE WARNED AREA

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

A FLASH FLOOD WARNING MEANS THAT FLASH FLOODING IS IMMINENT OR HAS
BEEN REPORTED. EVACUATE TO HIGHER GROUND AND TAKE THE NECESSARY
PRECAUTIONS SHOULD FLOOD WATERS AFFECT YOUR AREA. MOTORISTS AND
PEDESTRIANS SHOULD NOT ATTEMPT TO CROSS FLOODED ROADS AND AREAS...AS
YOU AND YOUR VEHICLE MIGHT BE SWEPT AWAY BY FLOOD WATERS. PERSONS IN
LOW LYING AREAS SHOULD SEEK HIGHER GROUND. FOLLOW INSTRUCTIONS FROM
LOCAL CIVIL DEFENSE OR LAW OFFICIALS.

LAT...LON 1837 6578 1831 6581 1834 6585 1840 6583

$$

BD/GR

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS JSJ wrote its last area forecast discussion before this flash flood warning went out at Jun 9, 7:41 PM CDT, 2 hours 46 minutes earlier.

Area forecast discussion, Jun 9, 7:41 PM CDT, 2 hours 46 minutes before

PUERTO RICO AND U.S. VIRGIN ISLANDS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
840 PM AST WED JUN  9 2004

UPDATE...
SURGE OF SHOWERS AND ISOLATED EMBEDDED THUNDERSTORMS ASSOCIATED WITH
THE TROPICAL WAVE SOUTHEAST OF THE LOCAL AREA IS MIGRATING NORTHWEST
THIS EVENING AND IS LIKELY TO IMPACT THE SOUTHERN AND EASTERN
COASTAL AREAS OF PUERTO RICO. HAVE RAISED POPS ACCORDINGLY.
ADDITIONALLY...HAVE ADJUSTED THE POPS FOR ST. CROIX GIVEN THE
PROXIMITY OF THE HEAVY RAIN OFFSHORE.

STREAMER EMANATING FROM EL YUNQUE CONTINUES TO FIRE UP.  UNTIL EARLY
MORNING THURSDAY HAVE KEPT POPS HIGH IN A BAND DOWNWIND OF EL YUNQUE
TO COVER BASES.

KIMBERLAIN

.DISCUSSION...WILL CONTINUE WITH NOT MUCH CHANGES IN THE ACTUAL
FORECAST PACKAGE. SURFACE ANALYSIS DEPICTED A TROPICAL WAVE THIS
MORNING MAINLY SOUTH OF THE LOCAL AREA WHERE DOPPLER RADAR SHOWED AN
AREA OF NUMEROUS SHOWERS AD THUNDERSTORMS OVER THE CARIBBEAN WATERS.
THIS WAVE SHOULD CONTINUE TO MOVE WEST THE REST OF THE AFTERNOON AND
TONIGHT EXITING THE LOCAL AREA EARLY THURSDAY. PART OF THE MOISTURE
AND INSTABILITY ASSOCIATED TO THIS WAVE SHOULD RESULT IN INCREASED
CHANCES OF PRECIPITATION THURSDAY.

ANOTHER TROPICAL WAVE IS EXPECTED TO ARRIVE TO THE LOCAL ISLANDS
FRIDAY. THIS SECOND WAVE WILL IN GENERAL MOVE MORE TO THE NORTH
WITH HIGHER CHANCES OF PRECIPITATION OVER THE U.S. VIRGIN ISLANDS
AND PUERTO RICO FRIDAY...SATURDAY AND POSSIBLY SUNDAY WITH A DRIER
WEATHER MONDAY.

&&

.CLIMATE...ALTHOUGH JUNE IS CHARACTERIZED BY A MINI DROUGHT IN
GENERAL...THIS PARTICULAR JUNE HAVE STARTED AND LOOKS LIKE IT WILL
CONTINUE WETTER THAN USUAL.

&&

.PRELIMINARY POINT TEMPS/POPS...
SJU  78  89  78  89 /  40  50  40  40
STT  79  89  79  89 /  50  50  40  40

&&

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

&&

RIVERA

Hazardous weather outlook, Jun 9, 5:12 AM CDT, 17 hours 15 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN JUAN PR
612 AM AST WED JUN 9 2004

PRZ001>013-AMZ710>750-101000-
612 AM AST WED JUN 9 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO.

.TODAY...A TROPICAL WAVE LOCATED OVER THE SOUTHEAST CARIBBEAN EARLY
THIS MORNING...WILL CONTINUE MOVING WEST NORTHWEST AND PASS MAINLY
SOUTH OF THE LOCAL AREA TODAY AND TONIGHT. HOWEVER...MOISTURE
ASSOCIATED WITH THIS WAVE WILL BEGIN TO SPREAD ACROSS PUERTO RICO
LATER TODAY AND TONIGHT. THIS MOISTURE WILL COMBINE WITH DAYTIME
HEATING...LOCAL SEA BREEZES AND MOUNTAIN UPSLOPE LIFTING THIS
AFTERNOON...TO PRODUCE SCATTERED TO NUMEROUS SHOWERS AND ISOLATED
THUNDERSTORMS...ESPECIALLY OVER THE CENTRAL AND WESTERN INTERIOR AND
WEST SECTIONS OF THE ISLAND. ALTHOUGH NO SIGNIFICANT FLOODING IS
EXPECTED...A FEW LOCATIONS COULD RECEIVE ENOUGH RAINFALL TO RESULT
IN SOME URBAN AND SMALL STREAM FLOODING.

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

.DAYS TWO THROUGH SEVEN...MOISTURE ASSOCIATED WITH THE TROPICAL WAVE
WILL LINGER ACROSS PUERTO RICO THURSDAY AND FRIDAY. SCATTERED TO
NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS WILL CONTINUE TO AFFECT
THE ISLAND BOTH DAYS AND MAY RESULT IN AT LEAST SOME URBAN AND SMALL
STREAM FLOODING. A SECOND TROPICAL WAVE IS EXPECTED TO AFFECT THE
LOCAL AREA FRIDAY AFTERNOON THROUGH SATURDAY.

VIZ001-002-AMZ710>730-101000-
612 AM AST WED JUN 9 2004

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

.TODAY...A TROPICAL WAVE LOCATED OVER THE SOUTHEAST CARIBBEAN EARLY
THIS MORNING...WILL CONTINUE MOVING WEST NORTHWEST AND PASS MAINLY
SOUTH OF THE LOCAL AREA TODAY AND TONIGHT. MOISTURE ASSOCIATED WITH
THIS WAVE WILL BEGIN TO SPREAD ACROSS THE U.S. VIRGIN ISLANDS LATER
TODAY AND TONIGHT. THIS MOISTURE WILL COMBINE WITH LOCAL EFFECTS
THIS AFTERNOON TO PRODUCE SCATTERED SHOWERS. ALTHOUGH NO SIGNIFICANT
FLOODING IS EXPECTED...A FEW LOCATIONS COULD RECEIVE ENOUGH RAINFALL
TO RESULT IN SOME URBAN AND GUT FLOODING.

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

.DAYS TWO THROUGH SEVEN...MOISTURE ASSOCIATED WITH THE TROPICAL WAVE
WILL LINGER ACROSS THE U.S. VIRGIN ISLANDS THURSDAY AND FRIDAY.
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS WILL AFFECT THE LOCAL
ISLANDS BOTH DAYS AND MAY RESULT IN AT LEAST SOME URBAN AND GUT
FLOODING. A SECOND TROPICAL WAVE IS EXPECTED TO AFFECT THE LOCAL
AREA FRIDAY AFTERNOON THROUGH SATURDAY.

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.

The office that day

Everything else NWS JSJ issued on the same UTC day.

Issued	Product	Office	Lasted
Jun 9, 8:11 PM CDT	Flash Flood Warning	JSJ	20 hr
Jun 9, 11:43 PM CDT	Flash Flood Warning	JSJ	19 hr
Jun 9, 11:54 PM CDT	Flash Flood Warning	JSJ	19 hr
Jun 10, 1:29 AM CDT	Flash Flood Warning	JSJ	19 hr

Nearby

Flash Flood Warnings in Puerto Rico, 2004 Every flash flood warning in 2004

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.