Alert archive / Puerto Rico / Flash Flood Warnings in 2006

Flash Flood Warning 91, NWS JSJ

November 13, 2006

NWS JSJ issued this flash flood warning at Nov 13, 2006, 5:52 PM CST. It was in force for 20 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: Nov 13, 2006, 5:52 PM CST (23:52 UTC)
Expired: Nov 14, 2006, 1:45 PM CST
In force: 20 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 140008 CCA
FFWSJU
PRC069-095-151-140345-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING...CORRECTED
NATIONAL WEATHER SERVICE SAN JUAN PR
752 PM AST MON NOV 13 2006

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING...
  FOR THE FOLLOWING MUNICIPALITIES
  IN PUERTO RICO
     MAUNABO
     YABUCOA
     HUMACAO

* UNTIL 1145 PM AST

*FOR PEOPLE ALONG THE FOLLOWING RIVER(S)...
RIO GUAYANES AND TRIBUTARIES

* AT 745 PM AST...VERY HEAVY RAINFALL...ISOLATED THUNDERSTORMS AND 
FLASH FLOODING WERE OCCURRING ACROSS SECTIONS OF SOUTHEASTERN PUERTO 
RICO. UP TO THREE INCHES OF RAIN HAS ALREADY ACCUMULATED WITH THIS 
SHOWER ACTIVITY AND AN ADDITIONAL ONE TO THREE INCHES OF RAIN IS 
POSSIBLE OVER THE NEXT FEW HOURS. ADDITIONALLY...A RIVER LEVEL 
SENSOR ALONG THE RIO GUAYANES WAS RAPIDLY APPROACHING FLOOD STAGE 
AND FLOODING OF THIS RIVER AND ITS TRIBUTARIES OVER THE NEXT SEVERAL 
HOURS IS VERY LIKELY.

THIS IS AN INCREASINGLY DANGEROUS AND POTENTIALLY LIFE THREATENING 
SITUATION.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CENTRAL
  HUMACAO AND NORTHEASTERN YABUCOA.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...ROADS...AS WELL AS LAND ALONG THE BANKS OF
CREEKS AND STREAMS.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

LAT...LON 1812 6578 1799 6590 1804 6594 1812 6587

$$

RGZ

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 Nov 13, 1:39 PM CST, 4 hours 13 minutes earlier.

Area forecast discussion, Nov 13, 1:39 PM CST, 4 hours 13 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
339 PM AST MON NOV 13 2006

.DISCUSSION...SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS
AFFECTED THE EASTERN PORTION OF PUERTO RICO FROM MID MORNING THROUGH
EARLY AFTERNOON. THESE SHOWERS PRODUCE BETWEEN 1 TO 3 INCHES...
MAINLY OVER THE MUNICIPALITY OF RIO GRANDE. ALSO CLUSTER OF
SHOWERS AND THUNDERSTORMS DEVELOPED OVER THE INTERIOR AND WESTERN
SECTION OF PUERTO RICO. MOST OF THESE SHOWERS WILL DISSIPATE OR
MOVE OVER THE ATLANTIC AND CARIBBEAN WATERS. AN UPPER LEVEL JET
STREAK LOCATED OVER THE EASTERN PUERTO RICO WILL ENHANCE THE
DEVELOPMENT OF OVERNIGHT SHOWERS THEREFORE EXPECT ISOLATED TO
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS WILL PREVAIL OVER THE
LOCAL WATERS WITH A FEW AFFECTING THE EASTERN COASTAL SECTIONS OF
PUERTO RICO.

ON TUESDAY...THE GFS MODEL SUGGEST GOOD OMEGA AS THE JET STREAK
WILL PREVAIL OVER THE LOCAL AREA...ENHANCING AFTERNOON SHOWERS MAINLY
OVER THE INTERIOR AND NORTHWEST SECTIONS OF PUERTO RICO. WINDS ARE
EXPECTED TO REMAIN AT 10 MPH OR LESS THEREFORE THE MOVEMENT OF
THESE SHOWERS WILL BE SLOW AND RAINFALL ACCUMULATION COULD PRODUCE
ISOLATED FLOODING.

&&

.MARINE...A LIGHT TO MODERATE TRADE WIND FLOW WILL PREVAIL ACROSS
THE LOCAL COASTAL WATERS...THIS WILL PRODUCE TRANQUIL SEAS THROUGH
AT LEAST FRIDAY. ON FRIDAY NIGHT A MODERATE NORTHERLY SWELL WILL
BE REACHING OUR LOCAL WATERS.

&&

.PRELIMINARY POINT TEMPS/POPS...
SJU  77  85  77  85 /  30  50  40  40
STT  78  84  78  84 /  40  40  50  50

&&

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

10

Hazardous weather outlook, Nov 13, 4:00 AM CST, 13 hours 52 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN JUAN PR
600 AM AST MON NOV 13 2006

PRZ001>013-AMZ710>750-141000-
600 AM AST MON NOV 13 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO.

.TODAY AND TONIGHT...
MOIST LOW LEVELS AND A SLIGHTLY UNSTABLE AIR MASS WILL CONTINUE
ACROSS THE LOCAL AREA TODAY. THIS WILL RESULT IN ENHANCED DIURNAL
SHOWER ACTIVITY THIS AFTERNOON. WITH WEAK STEERING WINDS...THE
SHOWERS WILL BE SLOW MOVING...AND ENABLE AREAS OF LOCALLY HEAVY
RAINFALL ACROSS PARTS OF PUERTO RICO. THIS WILL RESULT IN AREAS OF
URBAN AND SMALL STREAM FLOODING.

.DAYS TWO THROUGH SEVEN...HAZARDOUS WEATHER CONDITIONS ARE NOT
EXPECTED.

.SPOTTER CALL TO ACTION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED TODAY.

VIZ001-002-AMZ710>730-141000-
600 AM AST MON NOV 13 2006

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

.TODAY AND TONIGHT...
MOIST LOW LEVELS AND A SLIGHTLY UNSTABLE AIR MASS WILL CONTINUE
ACROSS THE LOCAL AREA TODAY. THIS WILL RESULT IN ENHANCED DIURNAL
SHOWER ACTIVITY THIS AFTERNOON. WITH WEAK STEERING WINDS...THE
SHOWERS WILL BE SLOW MOVING...AND THERE IS THE CHANCE OF LOCALLY
HEAVY RAINFALL ACROSS PARTS OF THE LOCAL ISLANDS.

.DAYS TWO THROUGH SEVEN...HAZARDOUS WEATHER CONDITIONS ARE NOT
EXPECTED.

.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

Nearby

Flash Flood Warnings in Puerto Rico, 2006 Every flash flood warning in 2006

Sources

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