Flash Flood Warning 10, NWS JSJ

Issued

Apr 21, 2007, 8:36 PM CDT (01:36 UTC)

In effect from

Apr 21, 2007, 8:41 PM CDT

Expired

Oct 26, 2007, 10:30 PM CDT

In force

188 days

Issued by

NWS JSJ

Area

Counties, with a storm outline in the text

Flood severity

None

The San Juan radar (TJUA), 17 km from the middle of the area, began a volume at 01:35 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

000 
WGCA52 TJSJ 220141
FFWSJU
PRC021-033-061-127-220300-

HERE 936 PM AST THERE

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
936 PM AST SAT APR 21 2007

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...

  IN PUERTO RICO
     BAYAMON
     GUAYNABO
     CATANO
     SAN JUAN

* UNTIL 1100 PM AST

* AT 929 PM AST...A TRAINED WEATHER SPOTTER REPORTED FLASH FLOODING 
FROM A HEAVY SHOWER AND THUNDERSTORM IN THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  PORTIONS OF SAN JUAN...CATANO...NORTHERN GUAYNABO AND
  NORTHERN BAYAMON.

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.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

FLOODING IS ALREADY OCCURRING AND IS EXPECTED TO CONTINUE THROUGH AT 
LEAST 11 PM AST. MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. DO 
NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...DIPS...OR LOW WATER 
CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL 
ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

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 1844 6613 1844 6607 1846 6604 1844 6602
      1841 6604 1841 6610 1838 6613 1838 6618

$$

SR

000 
WGCA52 TJSJ 262331 CCA
FFWSJU
PRC009-019-025-035-041-043-057-123-270330-
/O.NEW.TJSJ.FF.W.0010.071026T2323Z-071027T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED...CORRECTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
723 PM AST FRI OCT 26 2007

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     CAGUAS
     CIDRA
     COAMO
     CAYEY
     AIBONITO
     BARRANQUITAS
     GUAYAMA
     SALINAS

* UNTIL 1130 PM AST

* AT 719 PM AST...EMERGENCY MANAGEMENT OFFICIALS REPORTED THAT TWO 
HIGHWAYS HAVE  BEEN CLOSED. HIGHWAY 171 FROM CIDRA TO CAYEY WAS 
CLOSED DUE TO RISING WATER FROM A TRIBUTARY OF THE RIO DE LA PLATA. 
AND HIGHWAY 742 WAS CLOSED DUE TO A MUDSLIDE AT KILOMETER 1.3. THE 
STORMS IN THIS BAND OF RAIN ARE MOVING WEST AT 25 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  GUAYAMA...OLIMPO...JOBOS...CAYEY...COQUI...VAZQUEZ...COCO...       
  AIBONITO...SALINAS AND BARRANQUITAS.

AS HEAVIER RAINS MOVE INTO THESE AREAS THE DANGER OF MUDSLIDES WILL 
INCREASE EXPONENTIALLY. PERSONS SHOULD AVOID DRIVING IF AT ALL 
POSSIBLE. MANY RIVERS WILL RISE RAPIDLY AS THIS EVENT UNFOLDS THIS 
EVENING. CONSIDERABLE RAIN HAS ALREADY FALLEN EAST OF THE AREA FROM 
YABUCOA TO PATILLAS AND ARROYO.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...ROADS
AND LANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING
AREAS ARE SUBJECT TO FLOODING.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

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 1819 6635 1816 6609 1795 6608 1797 6633
TIME...MOT...LOC 2323Z 099DEG 25KT 1805 6600

$$

SNELL

Flash Flood Warnings in Puerto Rico, 2007Every flash flood warning in 2007

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