Alert archive / Puerto Rico / Flash Flood Warnings in 2011

Flash Flood Warning 85, NWS JSJ

July 29, 2011

NWS JSJ issued this flash flood warning at Jul 29, 2011, 12:22 PM CDT. It was in force for 6 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: Jul 29, 2011, 12:22 PM CDT (17:22 UTC)
Expired: Jul 29, 2011, 6:15 PM CDT
In force: 6 hr
Issued by: NWS JSJ
Area: Storm-based polygon
Flood severity: None

The radar

The San Juan radar (TJUA), 36 km from the middle of the area, began a volume at 17:22 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.

302 
WGCA52 TJSJ 291722
FFWSJU
PRC025-029-031-063-077-087-119-127-139-292015-
/O.NEW.TJSJ.FF.W.0085.110729T1722Z-110729T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
122 PM AST FRI JUL 29 2011

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     CAGUAS
     CANOVANAS
     GURABO
     JUNCOS
     SAN JUAN
     TRUJILLO ALTO
     CAROLINA
     RIO GRANDE
     LOIZA

* UNTIL 415 PM AST

* AT 110 PM AST...TERMINAL DOPPLER RADAR INDICATED STRONG SHOWERS 
AND THUNDERSTORMS ACROSS THIS AREA. U.S.G.S. RIVER SENSORS INDICATE 
THAT THE RIO CANAS IS OUT OF ITS BANKS AND CONTINUE TO RISE DUE TO 
THE PERSISTENT HEAVY SHOWERS.

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 1845 6589 1845 6588 1842 6581 1825 6592
      1830 6607 1846 6590

$$

JJA

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

2 follow-up statements

248 
WGCA52 TJSJ 292009
FFWSJU
PRC025-029-031-063-077-087-119-127-139-292315-
/O.EXT.TJSJ.FF.W.0085.000000T0000Z-110729T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
409 PM AST FRI JUL 29 2011

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     CAGUAS
     CANOVANAS
     GURABO
     JUNCOS
     SAN JUAN
     TRUJILLO ALTO
     CAROLINA
     RIO GRANDE
     LOIZA

* UNTIL 715 PM AST

* AT 403 PM AST...DOPPLER RADAR INDICATED SHOWERS AND THUNDERSTORMS 
ACROSS THIS AREA. U.S.G.S. RIVER SENSORS CONTINUES TO INDICATE THAT 
THE RIO CANAS IS OUT OF ITS BANKS AND CONTINUE TO RISE DUE TO THE 
PERSISTENT HEAVY SHOWERS.

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 1845 6589 1845 6588 1842 6581 1825 6592
      1830 6607 1846 6590

$$

CASTRO

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

821 
WGCA72 TJSJ 292309
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
709 PM AST FRI JUL 29 2011

PRC025-029-031-063-077-087-119-127-139-292320-
/O.EXP.TJSJ.FF.W.0085.000000T0000Z-110729T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CAGUAS PR-CANOVANAS PR-GURABO PR-JUNCOS PR-SAN JUAN PR-
TRUJILLO ALTO PR-CAROLINA PR-RIO GRANDE PR-LOIZA PR-
709 PM AST FRI JUL 29 2011

...THE FLASH FLOOD WARNING WILL EXPIRE AT 715 PM AST FOR LOIZA...RIO
GRANDE...CAROLINA...TRUJILLO ALTO...SAN JUAN...JUNCOS...GURABO...
CANOVANAS AND CAGUAS MUNICIPALITIES...

DOPPLER RADAR INDICATED THAT THE HEAVY RAIN WHICH AFFECTED THIS AREA
HAD DISSIPATED OR MOVED AWAY. NO SIGNIFICANT ADDITIONAL RAINFALL IS
EXPECTED ACROSS THESE AREAS AT THIS TIME.

LAT...LON 1845 6589 1845 6588 1842 6581 1825 6592
      1830 6607 1846 6590

$$

CASTRO

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
Jul 29, 11:40 AM CDT	Areal Flood Advisory	JSJ	3 hr
Jul 29, 11:51 AM CDT	Areal Flood Advisory	JSJ	6 hr
Jul 29, 2:05 PM CDT	Areal Flood Advisory	JSJ	3 hr
Jul 29, 2:48 PM CDT	Areal Flood Advisory	JSJ	3 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.