Alert archive / Puerto Rico / Flash Flood Warnings in 2007

Flash Flood Warning 34, NWS JSJ

April 30, 2007

NWS JSJ issued this flash flood warning at Apr 30, 2007, 12:32 PM CDT. It was in force for 181 days. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 30, 2007, 12:32 PM CDT (17:32 UTC)
Expired: Oct 28, 2007, 1:30 PM CDT
In force: 181 days
Issued by: NWS JSJ
Area: Counties, with a storm outline in the text
Flood severity: None

The radar

The San Juan radar (TJUA), 6 km from the middle of the area, began a volume at 17:35 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.

What was reported inside it

Time	Report	Where	Remark
Oct 26, 11:40 PM CDT	FLASH FLOOD	2 Ese Yabucoa, PR	HIGHWAY 901 AND QUEBRADA IN CAMINO NUEVO FLOODED.
Oct 26, 11:40 PM CDT	FLASH FLOOD	2 Se Naguabo, PR	FLOODING OVER HIGHWAY 31 AND IN SECTOR LA PITINA.
Oct 26, 11:40 PM CDT	FLASH FLOOD	Yabucoa, PR	BARRIO CALABASA FLOODED
Oct 27, 8:40 PM CDT	FLASH FLOOD	Arroyo, PR	HIGHWAY 3 IN CUATRO CALLE FLOODED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The text

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

000 
WGCA52 TJSJ 301736
FFWSJU
PRC071-081-131-302030-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
132 PM AST MON APR 30 2007

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     ISABELA
     SAN SEBASTIAN
     LARES

* UNTIL 430 PM AST

* AT 128 PM AST...LOCAL EMERGENCY MANAGEMENT OFFICIALS REPORTED 
FLASH   FLOODING FROM HEAVY RAINFALL OVER THE WARNED AREA. NATIONAL 
WEATHER SERVICE DOPPLER RADAR VERIFIES THIS HEAVY RAINFALL OF OVER 3 
INCHES OVER THIS AREA WITH CONTINUED HEAVY RAIN.

* THE STORM PRODUCING FLASH FLOODING WILL OTHERWISE REMAIN OVER
  MAINLY RURAL AREAS OF THE INDICATED 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.

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.

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.

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

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN SAN
JUAN.

LAT...LON 1837 6694 1825 6683 1832 6698 1846 6701

$$

AAS

2 follow-up statements

000 
WGCA52 TJSJ 281132
FFWSJU
PRC007-015-025-035-041-057-063-069-077-085-095-103-109-123-129-151-
281530-
/O.NEW.TJSJ.FF.W.0034.071028T1130Z-071028T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
730 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
     CAGUAS
     CIDRA
     CAYEY
     AGUAS BUENAS
     JUNCOS
     GURABO
     SAN LORENZO
     LAS PIEDRAS
     ARROYO
     PATILLAS
     MAUNABO
     NAGUABO
     GUAYAMA
     HUMACAO
     SALINAS
     YABUCOA

* UNTIL 1130 AM AST

* AT 724 AM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
BANDS OF HEAVY RAINS AND ISOLATED THUNDERSTORMS MOVING NORTHWEST 
ACROSS THE SOUTHEAST...EASTERN INTERIOR AND NORTHEAST SECTIONS OF 
PUERTO RICO.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GUAYAMA...
  YABUCOA...SAN LORENZO...PUNTA SANTIAGO...PLAYITA...PATILLAS...
  PALMAS...OLIMPO...NAGUABO...MARTORELL...LA FERMINA...LAS PIEDRAS...
  JUNCOS...HUMACAO...EMAJAGUA...MAUNABO...CORAZON...CIDRA...CELADA...
  GURABO...CAYEY...CAGUAS...BUENA VISTA...BAIROA AND ANTON RUIZ

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 1794 6618 1817 6622 1828 6605 1824 6566
      1798 6587
TIME...MOT...LOC 1130Z 180DEG 0KT 1798 6603

$$

RM

000 
WGCA52 TJSJ 281530
FFWSJU
PRC007-015-025-035-041-057-063-069-077-085-095-103-109-123-129-151-
281830-
/O.EXT.TJSJ.FF.W.0034.000000T0000Z-071028T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
1130 AM AST SUN OCT 28 2007

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     CAGUAS
     CIDRA
     CAYEY
     AGUAS BUENAS
     JUNCOS
     GURABO
     SAN LORENZO
     LAS PIEDRAS
     ARROYO
     PATILLAS
     MAUNABO
     NAGUABO
     GUAYAMA
     HUMACAO
     SALINAS
     YABUCOA

* UNTIL 230 PM AST

* AT 1125 AM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED  
  AREAS OF LIGHT RAIN AFFECTING THESE MUNICIPALITIES. HOWEVER...A    
  NEW BAND OF SHOWERS AND EMBEDDED THUNDERSTORMS WITH VERY HEAVY     
  RAIN WAS POISED TO MOVE ACROSS THE WARNING AREA BEGINNING BY 1145  
  AM AND THE CONTINUING THROUGH 230 PM. ADDITIONAL RAINFALL OF 1 TO  
  3 INCHES WILL OCCUR AND THIS WILL RESULT IN NEW FLASH FLOODING OF  
  LOW LYING AREAS...ROADS...RIVERS AND STREAMS...AND WILL FURTHER    
  AGGRAVATE ONGOING FLOODING. MUDSLIDES ARE LIKELY OVER AREAS OF     
  STEEP TERRAIN.

THIS IS A DANGEROUS SITUATION. 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.

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 1794 6618 1817 6622 1828 6605 1824 6566
      1798 6587
TIME...MOT...LOC 1522Z 180DEG 0KT 1798 6603

$$

BCS

The office that day

Everything else NWS JSJ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 30, 1:08 PM CDT	Flash Flood Warning	JSJ		181 days

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; local storm reports from the same archive; radar from the NEXRAD Level II archive.