Alert archive / Puerto Rico / Flash Flood Warnings in 2011

Flash Flood Warning 33, NWS JSJ

May 23, 2011

NWS JSJ issued this flash flood warning at May 23, 2011, 5:40 PM 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: May 23, 2011, 5:40 PM CDT (22:40 UTC)
Expired: May 23, 2011, 8:30 PM CDT
In force: 3 hr
Issued by: NWS JSJ
Area: Storm-based polygon
Flood severity: None

The radar

The San Juan radar (TJUA), 107 km from the middle of the area, began a volume at 22:44 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.

460 
WGCA52 TJSJ 232240
FFWSJU
PRC011-083-131-240130-
/O.NEW.TJSJ.FF.W.0033.110523T2240Z-110524T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
640 PM AST MON MAY 23 2011

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     SAN SEBASTIAN
     LAS MARIAS
     ANASCO

* UNTIL 930 PM AST

* AT 628 PM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
THAT RAIN HAS ENDED OVER THE WARNED AREA. HOWEVER THE USGS GAGE ON 
RIO ANASCO WAS RISING AND THESE WATERS ARE TRAVELING TOWARD THE 
MUNICIPALITY OF ANASCO..

FOR THE RIO GRANDE DE ANASCO AT BARRIO GUACIO  - ANBP4
      FLOOD STAGE - 14 FEET.
      AT 628 PM AST THE USGS SENSOR INDICATED THE RIVER              
      HAD RISEN TO...14.83 FEET. MINOR FLOODING IS FORECAST.

THE ANASCO RIVER AT RIO ARRIBA WAS NOT EXPECTED TO REACH FLOOD STAGE 
BUT WILL BE MONITORED CLOSELY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 1829 6713 1829 6699 1826 6699 1826 6713

$$

SNELL

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

1 follow-up statement

335 
WGCA72 TJSJ 240129
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
929 PM AST MON MAY 23 2011

PRC011-083-131-240137-
/O.EXP.TJSJ.FF.W.0033.000000T0000Z-110524T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN SEBASTIAN PR-LAS MARIAS PR-ANASCO PR-
929 PM AST MON MAY 23 2011

...THE FLASH FLOOD WARNING WILL EXPIRE AT 930 PM AST FOR ANASCO...LAS
MARIAS AND SAN SEBASTIAN MUNICIPALITIES...

RIVER LEVELS OF THE RIO GRANDE DE ANASCO HAVE RETREATED BELOW FLOOD 
STAGE AT BARRIO GUACIO. THE THREAT OF FLOODING IS OVER IN THIS AREA.

LAT...LON 1829 6713 1829 6699 1826 6699 1826 6713

$$

SNELL

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
May 23, 11:51 AM CDT	Areal Flood Advisory	JSJ	114 min
May 23, 12:04 PM CDT	Areal Flood Advisory	JSJ	3 hr
May 23, 1:37 PM CDT	Areal Flood Advisory	JSJ	113 min
May 23, 1:39 PM CDT	Areal Flood Advisory	JSJ	111 min
May 23, 2:33 PM CDT	Flash Flood Warning	JSJ	3 hr
May 23, 2:55 PM CDT	Areal Flood Advisory	JSJ	3 hr
May 23, 3:01 PM CDT	Areal Flood Advisory	JSJ	119 min
May 23, 4:55 PM CDT	Flash Flood Warning	JSJ	6 hr
May 23, 5:53 PM CDT	Flash Flood Warning	JSJ	4 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.