Alert archive / Puerto Rico / Flash Flood Warnings in 2011

Flash Flood Warning 145, NWS JSJ

September 19, 2011

NWS JSJ issued this flash flood warning at Sep 19, 2011, 8:01 PM CDT. It was in force for 2 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 19, 2011, 8:01 PM CDT (01:01 UTC)
Expired: Sep 19, 2011, 10:05 PM CDT
In force: 2 hr
Issued by: NWS JSJ
Area: Storm-based polygon
Flood severity: None

The radar

The San Juan radar (TJUA), 69 km from the middle of the area, began a volume at 01:00 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.

898 
WGCA52 TJSJ 200101
FFWSJU
PRC141-200400-
/O.NEW.TJSJ.FF.W.0145.110920T0101Z-110920T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
901 PM AST MON SEP 19 2011

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITY

  IN PUERTO RICO
     UTUADO

* UNTIL MIDNIGHT AST

* AT 849 PM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  MODERATE RAIN CONTINUING OVER THE WARNED AREA. RUNOFF FROM         
  PREVIOUS HEAVY RAINFALL HAS CAUSED SHARP RISES RIO GRANDE DE       
  ARECIBO IN UTUADO. AT 8:50 PM AST...USGS RIVER SENSOR INDICATED    
  THE RIVER AT 9.89 FEET AND RISING RAPIDLY AND FLOOD STAGE IS       
  10 FEET.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 1827 6676 1832 6669 1832 6665 1829 6666
      1827 6670 1822 6669 1824 6677

$$

ER

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

1 follow-up statement

812 
WGCA72 TJSJ 200305
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
1105 PM AST MON SEP 19 2011

PRC141-200311-
/O.CAN.TJSJ.FF.W.0145.000000T0000Z-110920T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
UTUADO PR-
1105 PM AST MON SEP 19 2011

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR UTUADO
MUNICIPALITY...

DOPPLER RADAR INDICATED THAT THE HEAVY RAIN WHICH AFFECTED THIS AREA 
HAD DISSIPATED. IN ADDITION...RIVERS ACROSS UTUADO ARE NOW BELOW 
FLOOD STAGE. THEREFORE...THE FLASH FLOOD WARNING FOR UTUADO HAS BEEN 
CANCELLED.

LAT...LON 1827 6676 1832 6669 1832 6665 1829 6666
      1827 6670 1822 6669 1824 6677

$$

ER

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 19, 7:16 PM CDT	Areal Flood Advisory	JSJ	119 min
Sep 19, 8:18 PM CDT	Flash Flood Warning	JSJ	3 hr
Sep 19, 8:49 PM CDT	Areal Flood Advisory	JSJ	116 min
Sep 19, 9:01 PM CDT	Areal Flood Advisory	JSJ	3 hr
Sep 19, 9:16 PM CDT	Areal Flood Advisory	JSJ	119 min
Sep 19, 11:14 PM CDT	Flash Flood Warning	JSJ	91 min
Sep 20, 5:42 AM CDT	Areal Flood Advisory	JSJ	6 hr
Sep 20, 12:51 PM CDT	Areal Flood Advisory	JSJ	2 hr

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.