Alert archive / Puerto Rico / Flash Flood Warnings in 2007

Flash Flood Warning 29, NWS JSJ

April 23, 2007

NWS JSJ issued this flash flood warning at Apr 23, 2007, 10:10 AM CDT. It took effect at Apr 23, 2007, 10:40 AM CDT. It was in force for 188 days. 2 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 23, 2007, 10:10 AM CDT (15:10 UTC)
In effect from: Apr 23, 2007, 10:40 AM CDT
Expired: Oct 28, 2007, 12:30 AM CDT
In force: 188 days
Issued by: NWS JSJ
Area: Counties, with a storm outline in the text
Flood severity: None

The radar

The San Juan radar (TJUA), 71 km from the middle of the area, began a volume at 15:11 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
Jul 17, 8:10 PM CDT	FLASH FLOOD	1 S Hormigueros, PR	HIGHWAY 114 FROM SAN GERMAN AND HIGHWAY 103 FROM CABO ROJO WERE FLOODED WHEN THE RIO GUANAJIBO LEFT ITS BANKS.
Sep 22, 9:35 PM CDT	HEAVY RAIN 0	Juana Diaz, PR	HEAVY RAINS ACROSS BARRIO PIEDRA GUZA CAUSED URBAN AND STREET FLOODING DUE TO POOR DRAINAGE AREAS WHERE THE FLOW OF THE RAINFALL WAS BLOCKED.

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 231514
FFWSJU
PRC053-231815-

HERE 1110 AM AST THERE

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
1110 AM AST MON APR 23 2007

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...

  IN PUERTO RICO
     FAJARDO

* UNTIL 215 PM AST

* AT 1104 AM AST...THE DOPPLER WEATHER RADAR AND LOCAL EMERGENCY 
MANAGERS REPORTED FLASH FLOODING FROM SHOWERS AND THUNDERSTORM 
DEVELOPING AND MOVING OVER THE WARNED AREA.

* THE SHOWERS AND STORM PRODUCING FLASH FLOODING WILL OTHERWISE 
LINGER OVER THE AREA AT LEAST THROUGH 2 PM .

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. MUDSLIDES ARE ALSO POSSIBLE ACROSS 
THESE AREAS.

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.

LAT...LON 1828 6564 1834 6562 1834 6567 1830 6570

$$
RAM

2 follow-up statements

000 
WGCA52 TJSJ 272136
FFWSJU
PRC001-009-023-035-043-055-057-059-067-073-075-079-107-111-113-121-
123-125-133-149-153-280130-
/O.NEW.TJSJ.FF.W.0029.071027T2130Z-071028T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
530 PM AST SAT OCT 27 2007

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     HORMIGUEROS
     COAMO
     CAYEY
     AIBONITO
     JAYUYA
     ADJUNTAS
     OROCOVIS
     SABANA GRANDE
     SAN GERMAN
     YAUCO
     VILLALBA
     GUAYANILLA
     GUAYAMA
     GUANICA
     JUANA DIAZ
     PONCE
     CABO ROJO
     SALINAS
     SANTA ISABEL
     PENUELAS
     LAJAS

* UNTIL 930 PM AST

* AT 526 PM AST...FLASH FLOODING HAS BEEN REPORTED FROM SALINAS AND 
SANTA ISABEL AND MANY REGIONS OF SOUTHERN AND SOUTHWESTERN PUERTO 
RICO.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PUERTO
  REAL...VILLALBA...VAZQUEZ...TALLABOA ALTA...SANTO DOMINGO...SAN
  GERMAN...SABANA GRANDE...PENUELAS...LUIS LLORENS TORRES...LOS
  LLANOS...LAJAS...JUANA DIAZ...GUAYABAL...COTO LAUREL...COAMO AND
  CABO ROJO

THE SITUATION WILL CONTINUE TO WORSEN AS HEAVY RAIN SHOWERS AND 
ISOLATED THUNDERSTORMS COME ONSHORE OVER THE WARNED AREA AND CREATE 
EXCESSIVE RUNOFF CAUSING 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. EVEN SOME MAINSTEM RIVERS WILL BEGIN TO RISE 
TOWARD FLOOD STAGE AS THIS UNFOLDS.

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. IF YOU DO NOT HAVE TO DRIVE TO ESCAPE DANGER...PLEASE STAY 
OUR OF HARMS WAY. WEATHER RELATED DEATHS FROM THIS SYSTEM HAVE 
ALREADY BEEN REPORTED. HILLSIDES AND ROADWAYS CAN GIVE WAY WITHOUT 
NOTICE...DONT BE UNDER THEM WHEN THEY COLLAPSE.

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 1791 6724 1806 6724 1815 6716 1814 6666
      1824 6644 1813 6633 1809 6617 1794 6620
      1790 6648 1793 6677 1787 6697
TIME...MOT...LOC 2130Z 330DEG 15KT 1804 6663

$$

SNELL

000 
WGCA52 TJSJ 280124
FFWSJU

PRC001-009-023-035-043-055-059-067-073-075-079-107-111-113-121-123-12
5-133-149-153-280530-
/O.EXT.TJSJ.FF.W.0029.000000T0000Z-071028T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
917 PM AST SAT OCT 27 2007

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     HORMIGUEROS
     COAMO
     CAYEY
     AIBONITO
     JAYUYA
     ADJUNTAS
     OROCOVIS
     SABANA GRANDE
     SAN GERMAN
     YAUCO
     VILLALBA
     GUAYANILLA
     GUANICA
     JUANA DIAZ
     PONCE
     CABO ROJO
     SALINAS
     SANTA ISABEL
     PENUELAS
     LAJAS

* UNTIL 130 AM AST

* AT 910 PM AST...DOPPLER RADAR WAS SHOWING A WIDE BAND OF HEAVY 
RAIN APPROACHING THE SOUTH COAST OF PUERTO RICO FROM THE SOUTHEAST. 
RAIN IS EXPECTED TO ARRIVE IN BETWEEN 30 TO 90 MINUTES IN THE WARNED 
AREA AND WILL KEEP THE AREA SATURATED AND PRONE TO RAPID RISES OF 
WATER IN SMALL STREAMS AND ROADWAYS. FOR THIS REASON THE FLASH FLOOD 
WARNING HAS BEEN EXTENDED UNTIL 1:30 AM AST.

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. MUDSLIDES ARE NOW BECOMING MORE 
COMMON AND NIGHTTIME DRIVING IS HAZARDOUS. IF YOU ARE NOT IN DANGER 
PLEASE STAY OUT OF HARMS WAY AND OFF THE ROADWAYS.

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

LAT...LON 1791 6724 1806 6724 1815 6716 1814 6666
      1824 6644 1813 6633 1809 6617 1794 6620
      1790 6648 1793 6677 1787 6697
TIME...MOT...LOC 0117Z 330DEG 15KT 1721 6615

$$

SNELL

The office that day

Everything else NWS JSJ issued on the same UTC day.

Issued	Product	Office	Lasted
Apr 22, 7:20 PM CDT	Flash Flood Warning	JSJ	187 days
Apr 22, 7:20 PM CDT	Flash Flood Warning	JSJ	187 days
Apr 22, 7:56 PM CDT	Flash Flood Warning	JSJ	187 days
Apr 22, 7:56 PM CDT	Flash Flood Warning	JSJ	188 days
Apr 22, 9:09 PM CDT	Flash Flood Warning	JSJ	188 days
Apr 22, 9:09 PM CDT	Flash Flood Warning	JSJ	188 days
Apr 22, 10:20 PM CDT	Flash Flood Watch	JSJ	54 hr
Apr 22, 11:12 PM CDT	Flash Flood Warning	JSJ	188 days
Apr 22, 11:12 PM CDT	Flash Flood Warning	JSJ	188 days
Apr 23, 1:18 AM CDT	Flash Flood Warning	JSJ	188 days
Apr 23, 7:19 AM CDT	Flash Flood Warning	JSJ	187 days
Apr 23, 7:19 AM CDT	Flash Flood Warning	JSJ	187 days
Apr 23, 7:19 AM CDT	Flash Flood Warning	JSJ	187 days
Apr 23, 7:19 AM CDT	Flash Flood Warning	JSJ	188 days
Apr 23, 10:10 AM CDT	Flash Flood Warning	JSJ	187 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.