Alert archive / Puerto Rico / Flash Flood Warnings in 2012

Flash Flood Warning 23, NWS JSJ

May 17, 2012

NWS JSJ issued this flash flood warning at May 17, 2012, 7:46 PM CDT. It was in force for 106 min. 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 17, 2012, 7:46 PM CDT (00:46 UTC)
Expired: May 17, 2012, 9:32 PM CDT
In force: 106 min
Issued by: NWS JSJ
Area: Storm-based polygon
Flood severity: None

The radar

The San Juan radar (TJUA), 18 km from the middle of the area, began a volume at 00:48 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.

081 
WGCA52 TJSJ 180046
FFWSJU
PRC151-180345-
/O.NEW.TJSJ.FF.W.0023.120518T0046Z-120518T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
846 PM AST THU MAY 17 2012

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITY

  IN PUERTO RICO
     YABUCOA

* UNTIL 1145 PM AST

* AT 840 PM AST...THE USGS RIVER SENSOR ALONG RIO GUAYANES ACROSS 
YABUCOA INDICATED THAT THE RIVER LEVEL WAS ALMOST AT 21 FEET. THE 
RIVER WILL REACH THE FLOOD STAGE LEVEL OF 22.00 FEET IN THE NEXT 
COUPLE OF HOURS. FOR THOSE REASONS THE NATIONAL WEATHER SERVICE HAS 
ISSUED A FLASH FLOOD WARNING FOR PEOPLES ALONG RIO GUAYANES AND ITS 
TRIBUTARIES UNTIL 1145 PM AST.

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 1807 6599 1809 6597 1807 6591 1808 6582
      1804 6584 1804 6592

$$

FIGUEROA

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

1 follow-up statement

325 
WGCA72 TJSJ 180232
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
1032 PM AST THU MAY 17 2012

PRC151-180240-
/O.CAN.TJSJ.FF.W.0023.000000T0000Z-120518T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
YABUCOA PR-
1032 PM AST THU MAY 17 2012

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

AT 1030 PM AST...DOPPLER WEATHER RADAR INDICATED THAT THE SHOWERS 
AND THUNDERSTORMS THAT WERE AFFECTING THIS MUNICIPALITY EARLIER HAD 
ENDED. ALTHOUGH AN ISOLATED SHOWER OR TWO COULD STILL OCCUR ACROSS 
THE FORMER ADVISORY AREA FOR THE NEXT 30 MINUTES OR SO...NO 
ADDITIONAL PERSISTENT HEAVY RAINFALL OR NEW FLOODING IS EXPECTED. 
THEREFORE...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR YABUCOA 
MUNICIPALITY.

LAT...LON 1807 6599 1809 6597 1807 6591 1808 6582
      1804 6584 1804 6592

$$

FIGUEROA

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 17, 9:15 PM CDT	Areal Flood Advisory	JSJ	2 hr
May 17, 9:26 PM CDT	Areal Flood Advisory	JSJ	2 hr
May 18, 12:13 PM CDT	Areal Flood Advisory	JSJ	7 hr
May 18, 12:24 PM CDT	Areal Flood Advisory	JSJ	4 hr
May 18, 2:00 PM CDT	Areal Flood Advisory	JSJ	5 hr
May 18, 2:29 PM CDT	Flash Flood Warning	JSJ	3 hr
May 18, 2:57 PM CDT	Flash Flood Warning	JSJ	3 hr

Nearby

Flash Flood Warnings in Puerto Rico, 2012 Every flash flood warning in 2012

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.