Alert archive / Puerto Rico / Flash Flood Warnings in 2007

Flash Flood Warning 33, NWS JSJ

April 24, 2007

NWS JSJ issued this flash flood warning at Apr 24, 2007, 11:46 PM CDT. It was in force for 186 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 24, 2007, 11:46 PM CDT (04:46 UTC)
Expired: Oct 28, 2007, 7:45 AM CDT
In force: 186 days
Issued by: NWS JSJ
Area: Counties, with a storm outline in the text
Flood severity: None

The radar

The San Juan radar (TJUA), 22 km from the middle of the area, began a volume at 04:49 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 250448
FFWSJU
PRC013-065-250700-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
1246 AM AST WED APR 25 2007

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...

  IN PUERTO RICO
     HATILLO
     ARECIBO

* UNTIL 300 AM AST

* AT 1243 AM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT MODERATE TO LOCALLY HEAVY RAIN CONTINUES ACROSS THESE AREAS. 
THEREFORE...THE FLASH FLOOD WARNING HAS BEEN EXTENDED.

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.

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.

DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.

LAT...LON 1839 6679 1842 6660 1849 6661 1849 6682

$$

1 follow-up statement

000 
WGCA52 TJSJ 281054
FFWSJU
PRC077-085-129-281245-
/O.NEW.TJSJ.FF.W.0033.071028T1051Z-071028T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
651 AM AST SUN OCT 28 2007

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     JUNCOS
     SAN LORENZO
     LAS PIEDRAS

* UNTIL 845 AM AST

* AT 645 AM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
FLASH FLOODING FROM HEAVY RAINS OCCURRING OVER THE WARNED AREA. 
RAINFALL RATES OF OVER TWO INCHES PER HOUR ARE POSSIBLE AND  GROUNDS 
ARE SATURATED. 

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 1820 6583 1813 6588 1816 6598 1823 6591
TIME...MOT...LOC 1051Z 180DEG 0KT 1798 6603

$$

RM

The office that day

Everything else NWS JSJ issued on the same UTC day.

Issued	Product	Office	Lasted
Apr 24, 8:03 PM CDT	Flash Flood Warning	JSJ	186 days
Apr 24, 9:42 PM CDT	Flash Flood Warning	JSJ	186 days
Apr 25, 8:19 AM CDT	Marine Weather Statement	JSJ	3 hr

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.