Alert archive / Puerto Rico / Flash Flood Warnings in 2014

Flash Flood Warning 20, NWS JSJ

August 23, 2014

NWS JSJ issued this flash flood warning at Aug 23, 2014, 10:35 PM CDT. It was in force for 7 hr. 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: Aug 23, 2014, 10:35 PM CDT (03:35 UTC)
Expired: Aug 24, 2014, 5:12 AM CDT
In force: 7 hr
Issued by: NWS JSJ
Area: Storm-based polygon
Flood severity: None

The radar

The San Juan radar (TJUA), 77 km from the middle of the area, began a volume at 03:39 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
Aug 23, 11:38 PM CDT	FLASH FLOOD	Yauco, PR	RIO LOCO OUT OF ITS BANKS IN YAUCO. ROUTE PR-121 IN YAUCO CLOSED.
Aug 24, 1:11 AM CDT	FLASH FLOOD	Yauco, PR	LAGO LUCHETTI IN YAUCO OUT OF ITS BANKS. PEOPLE ARE BEING EVACUATED NOW IN SECTOR LUCHETTI BY EMERGENCY PERSONNEL.

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.

815 
WGCA52 TJSJ 240335
FFWSJU
PRC059-111-153-240630-
/O.NEW.TJSJ.FF.W.0020.140824T0335Z-140824T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
1135 PM AST SAT AUG 23 2014

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     GUAYANILLA
     PENUELAS
     YAUCO

* UNTIL 230 AM AST

* AT 1125 PM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED  
PERSISTENT HEAVY RAINFALL AFFECTING THE WARNED AREA OVER THE LAST 
HOUR AND CONTINUED TO RAIN. THIS HEAVY RAINFALL COULD BRING 
ADDITIONAL 2-3 INCHES IN THE NEXT HOUR OR SO. THEREFORE... 
SIGNIFICANT RISES CAN BE OBSERVED ALONG RIO LUCHETTI IN YAUCO. 
THEREFORE RESIDENTS IN FLOOD PRONE AREAS SHOULD MOVE TO HIGHER 
GROUND IMMEDIATELY AND NEVER TRY TO CROSS A FLOODED ROADWAY. 

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 1798 6687 1800 6686 1802 6688 1814 6693
      1814 6680 1813 6676 1811 6675 1813 6669
      1797 6670 1796 6676 1799 6677 1796 6679
      1795 6685

$$

ER/EM

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

3 follow-up statements

165 
WGCA72 TJSJ 240448
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
1248 AM AST SUN AUG 24 2014

PRC059-111-153-240630-
/O.CON.TJSJ.FF.W.0020.000000T0000Z-140824T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GUAYANILLA PR-PENUELAS PR-YAUCO PR-
1248 AM AST SUN AUG 24 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 AM AST FOR
YAUCO...PENUELAS AND GUAYANILLA MUNICIPALITIES...

AT 1246 AM AST...PUBLIC REPORTS INDICATE THAT PR-121 IN YAUCO IS 
CLOSED DUE TO RIO LOCO OUT OF ITS BANKS. DOPPLER RADAR CONTINUES TO 
INDICATE HEAVY RAINFALL FALLING OVER THE WARNING AREA. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

&&

LAT...LON 1798 6687 1800 6686 1802 6688 1814 6693
      1814 6680 1813 6676 1811 6675 1813 6669
      1797 6670 1796 6676 1799 6677 1796 6679
      1795 6685

$$

ROSA

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

303 
WGCA52 TJSJ 240628
FFWSJU
PRC059-111-153-241030-
/O.EXT.TJSJ.FF.W.0020.000000T0000Z-140824T1030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
228 AM AST SUN AUG 24 2014

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     GUAYANILLA
     PENUELAS
     YAUCO

* UNTIL 630 AM AST

* AT 220 AM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED  
PERSISTENT HEAVY RAINFALL AFFECTING THE WARNED AREA OVER THE LAST 
HOUR AND CONTINUED TO RAIN. THIS HEAVY RAINFALL COULD BRING 
ADDITIONAL 2-3 INCHES IN THE NEXT HOUR OR SO. EMERGENCY MANAGERS 
REPORTED THE LUCHETTI RIVER OUT OF ITS BANKS AND GUAYANILLA RIVER 
SENSOR IS REPORTING WATER LEVELS OVER THE FLOODING STAGE. THEREFORE 
RESIDENTS IN FLOOD PRONE AREAS SHOULD MOVE TO HIGHER GROUND  
IMMEDIATELY AND NEVER TRY TO CROSS A FLOODED ROADWAY.

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.

&&

LAT...LON 1798 6687 1800 6686 1802 6688 1814 6693
      1814 6680 1813 6676 1811 6675 1813 6669
      1797 6670 1796 6676 1799 6677 1796 6679
      1795 6685

$$

EM

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

735 
WGCA72 TJSJ 241012
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
612 AM AST SUN AUG 24 2014

PRC059-111-153-241021-
/O.CAN.TJSJ.FF.W.0020.000000T0000Z-140824T1030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GUAYANILLA PR-PENUELAS PR-YAUCO PR-
612 AM AST SUN AUG 24 2014

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR YAUCO...PENUELAS
AND GUAYANILLA MUNICIPALITIES...

RIVERS HAVE FALLEN BELOW FLOOD STAGE IN THE WARNED AREAS AND NO 
ADDITIONAL HEAVY RAINFALL IS EXPECTED.

LAT...LON 1798 6687 1800 6686 1802 6688 1814 6693
      1814 6680 1813 6676 1811 6675 1813 6669
      1797 6670 1796 6676 1799 6677 1796 6679
      1795 6685

$$

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
Aug 23, 8:00 PM CDT	Areal Flood Advisory	JSJ	3 hr
Aug 23, 8:33 PM CDT	Flash Flood Warning	JSJ	8 hr
Aug 23, 9:32 PM CDT	Flash Flood Warning	JSJ	3 hr
Aug 23, 9:43 PM CDT	Areal Flood Advisory	JSJ	107 min
Aug 23, 11:08 PM CDT	Flash Flood Warning	JSJ	6 hr
Aug 23, 11:32 PM CDT	Areal Flood Advisory	JSJ	58 min
Aug 24, 12:34 AM CDT	Areal Flood Advisory	JSJ	116 min
Aug 24, 1:51 AM CDT	Areal Flood Advisory	JSJ	3 hr
Aug 24, 3:33 AM CDT	Flash Flood Warning	JSJ	10 hr
Aug 24, 5:09 AM CDT	Areal Flood Warning	JSJ	8 hr

Nearby

Flash Flood Warnings in Puerto Rico, 2014 Every flash flood warning in 2014

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.