Alert archive / Puerto Rico / Flash Flood Warnings in 2011

Flash Flood Warning 142, NWS JSJ

September 18, 2011

NWS JSJ issued this flash flood warning at Sep 18, 2011, 9:43 AM CDT. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Sep 18, 2011, 9:43 AM CDT (14:43 UTC)
Expired: Sep 18, 2011, 12:57 PM CDT
In force: 3 hr
Issued by: NWS JSJ
Area: Storm-based polygon
Flood severity: None

The radar

The San Juan radar (TJUA), 49 km from the middle of the area, began a volume at 14:46 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.

154 
WGCA52 TJSJ 181443
FFWSJU
PRC037-053-089-103-181845-
/O.NEW.TJSJ.FF.W.0142.110918T1443Z-110918T1845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
1043 AM AST SUN SEP 18 2011

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     CEIBA
     NAGUABO
     FAJARDO
     LUQUILLO

* UNTIL 245 PM AST

* AT 1037 AM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
SHOWERS AND THUNDERSTORMS WITH VERY HEAVY RAIN ACROSS NORTHEASTERN 
PUERTO RICO MOVING GENERALLY TO THE WEST NORTHWEST AROUND 10 MPH. 
TWO TO FOUR INCHES OF RAIN HAVE BEEN ESTIMATED BY RADAR AND 
ADDITIONAL ONE TO THREE INCHES WILL BE POSSIBLE. SHARP RISES HAVE 
BEEN OBSERVED AT THE FAJARDO RIVER AND THIS ADDITIONAL RIVER WILL 
LIKELY CAUSE THE RIVER TO GO OUT OVER ITS BANKS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 1836 6552 1836 6562 1835 6562 1835 6556
      1833 6562 1832 6560 1826 6563 1825 6557
      1821 6560 1823 6563 1819 6564 1818 6576
      1822 6583 1827 6583 1830 6576 1837 6577
      1839 6575 1837 6566 1840 6558

$$

ROSA

ADDITIONAL INFORMATION CAN BE FOUND AT /USE LOWER CASE LETTERS/:
     HTTP://WWW.WEATHER.GOV/SANJUAN

2 follow-up statements

754 
WGCA72 TJSJ 181539
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
1139 AM AST SUN SEP 18 2011

PRC037-053-089-103-181845-
/O.CON.TJSJ.FF.W.0142.000000T0000Z-110918T1845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CEIBA PR-NAGUABO PR-FAJARDO PR-LUQUILLO PR-
1139 AM AST SUN SEP 18 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 245 PM AST FOR
LUQUILLO...FAJARDO...NAGUABO AND CEIBA MUNICIPALITIES...

AT 1115 AM AST...USGS SENSORS INDICATED THE FAJARDO RIVER AT PARAISO 
AT 9.73 FEET AND STILL RISING AND FLOOD STAGE IS 10 FEET. AT 9.0 
FEET...THE RIVER FLOODS HIGHWAY PR-53 AT THE INTERSECTION WITH 
HIGHWAY PR-3. ALTHOUGH RAINS HAVE DIMINISHED IN THE LAST 
HOUR...RADAR INDICATED ANOTHER CLUSTER OF HEAVY SHOWERS AND 
THUNDERSTORMS ABOUT TO MOVE INTO THE FAJARDO AREA SO ADDITIONAL 
RISES ARE POSSIBLE ALONG THE FAJARDO RIVER.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 1836 6552 1836 6562 1835 6562 1835 6556
      1833 6562 1832 6560 1826 6563 1825 6557
      1821 6560 1823 6563 1819 6564 1818 6576
      1822 6583 1827 6583 1830 6576 1837 6577
      1839 6575 1837 6566 1840 6558

$$

ROSA

ADDITIONAL INFORMATION CAN BE FOUND AT /USE LOWER CASE LETTERS/:
     HTTP://WWW.WEATHER.GOV/SANJUAN

586 
WGCA72 TJSJ 181757
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
157 PM AST SUN SEP 18 2011

PRC037-053-089-103-181807-
/O.CAN.TJSJ.FF.W.0142.000000T0000Z-110918T1845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CEIBA PR-NAGUABO PR-FAJARDO PR-LUQUILLO PR-
157 PM AST SUN SEP 18 2011

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR LUQUILLO...
FAJARDO...NAGUABO AND CEIBA MUNICIPALITIES...

WATER LEVELS HAVE RECEDED IN NORTHEASTERN PUERTO RICO.

LAT...LON 1836 6552 1836 6562 1835 6562 1835 6556
      1833 6562 1832 6560 1826 6563 1825 6557
      1821 6560 1823 6563 1819 6564 1818 6576
      1822 6583 1827 6583 1830 6576 1837 6577
      1839 6575 1837 6566 1840 6558

$$

ROSA

ADDITIONAL INFORMATION CAN BE FOUND AT /USE LOWER CASE LETTERS/:
     HTTP://WWW.WEATHER.GOV/SANJUAN

The office that day

Everything else NWS JSJ issued on the same UTC day.

Issued	Product	Office	Lasted
Sep 18, 12:29 PM CDT	Areal Flood Advisory	JSJ	4 hr
Sep 18, 12:43 PM CDT	Severe Thunderstorm Warning	JSJ	32 min
Sep 18, 1:04 PM CDT	Special Marine Warning	JSJ	53 min
Sep 18, 5:38 PM CDT	Special Marine Warning	JSJ	52 min

Nearby

Flash Flood Warnings in Puerto Rico, 2011 Every flash flood warning in 2011

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.