Alert archive / Puerto Rico / Flash Flood Warnings in 2007

Flash Flood Warning 7, NWS JSJ

April 17, 2007

NWS JSJ issued this flash flood warning at Apr 17, 2007, 9:25 PM CDT. It was in force for 192 days. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 17, 2007, 9:25 PM CDT (02:25 UTC)
Expired: Oct 26, 2007, 9:15 PM CDT
In force: 192 days
Issued by: NWS JSJ
Area: Counties, with a storm outline in the text
Flood severity: None

The radar

The San Juan radar (TJUA), 18 km from the middle of the area, began a volume at 02:25 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.

The text

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

000 
WGCA52 TJSJ 180228
FFWSJU
PRC031-127-139-180430-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
1025 PM AST TUE APR 17 2007

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CAROLINA...SAN JUAN AND...TRUJILLO ALTO...

* UNTIL 1230 AM AST

* AT 1020 PM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED  
VERY HEAVY RAIN FROM SHOWERS AND THUNDERSTORMS OVER THE WARNED 
AREAS. RAINFALL ACCUMULATIONS WITHIN THE PAST HOUR HAVE RANGED FROM 
2 TO 2.5 INCHES IN LOCALIZED SPOTS OVER THESE MUNICIPALITIES. 

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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS 
IMMINENT. 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.

LAT...LON 1836 6608 1833 6604 1837 6600 1840 6600
      1842 6608

$$

JFR/RAM

1 follow-up statement

000 
WGCA52 TJSJ 262214
FFWSJU
PRC015-069-085-095-109-129-151-270215-
/O.NEW.TJSJ.FF.W.0007.071026T2210Z-071027T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
610 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
     SAN LORENZO
     LAS PIEDRAS
     ARROYO
     PATILLAS
     MAUNABO
     HUMACAO
     YABUCOA

* UNTIL 1015 PM AST

* AT 608 PM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
FLASH FLOODING FROM AN EXTENSIVE BAND OF RAIN AND THUNDERSTORMS 
MOVING ONSHORE OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO            
  YABUCOA...MARTORELL AND ROSA SANCHEZ AND ALL AREAS ALONG THE RIO   
  GUAYANES.

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. THIS EVENT WILL LAST LONGER AND FLOOD 
WATERS WILL BE DEEPER THAN THE USUAL FLOOD EVENTS EXPERIENCED IN 
THIS AREA.

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 1814 6576 1801 6583 1797 6607 1810 6608
      1815 6597 1816 6591
TIME...MOT...LOC 2210Z 320DEG 20KT 1805 6593

$$

SNELL

Nearby

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

Sources

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.