Alert archive / Puerto Rico / Flash Flood Warnings in 2011

Flash Flood Warning 83, NWS JSJ

July 23, 2011

NWS JSJ issued this flash flood warning at Jul 23, 2011, 5:04 PM CDT. It was in force for 116 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: Jul 23, 2011, 5:04 PM CDT (22:04 UTC)
Expired: Jul 23, 2011, 7:00 PM CDT
In force: 116 min
Issued by: NWS JSJ
Area: Storm-based polygon
Flood severity: None

The radar

The San Juan radar (TJUA), 10 km from the middle of the area, began a volume at 22:06 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.

191 
WGCA52 TJSJ 232204
FFWSJU
PRC015-057-095-109-240000-
/O.NEW.TJSJ.FF.W.0083.110723T2204Z-110724T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
604 PM AST SAT JUL 23 2011

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     ARROYO
     GUAYAMA
     MAUNABO
     PATILLAS

* UNTIL 800 PM AST

* AT 552 PM AST...USGS RIVER SENSORS INDICATED THAT THE RIO GRANDE 
DE PATILLAS IS NEAR FLOOD STAGE AND RISING AND THE RIO MARIN NEAR 
PATILLAS HAS GONE OVER ITS FLOOD STAGE DUE TO THE HEAVY RAIN THAT 
AFFECTED THE AREA. ALSO...URBAN FLOODING HAS CAUSED HAZARDOUS 
DRIVING CONDITIONS. ADDITIONAL RAINFALL IS POSSIBLE OVER THIS AREA 
FOR THE NEXT FEW HOURS.

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 1799 6605 1810 6606 1810 6602 1809 6601
      1808 6602 1808 6601 1806 6600 1806 6598
      1798 6590

$$

JJA/ET

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

1 follow-up statement

368 
WGCA72 TJSJ 232359
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
759 PM AST SAT JUL 23 2011

PRC015-057-095-109-240007-
/O.EXP.TJSJ.FF.W.0083.000000T0000Z-110724T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ARROYO PR-GUAYAMA PR-MAUNABO PR-PATILLAS PR-
759 PM AST SAT JUL 23 2011

...THE FLASH FLOOD WARNING WILL EXPIRE AT 800 PM AST FOR PATILLAS...
MAUNABO...GUAYAMA AND ARROYO MUNICIPALITIES...

USGS RIVER SENSORS INDICATE THAT THE RIO MARIN AND RIO GRANDE DE 
PATILLAS IS NOW BELOW FLOOD STAGE AND CONTINUES TO RECEDE. 
ALSO...THE HEAVY SHOWERS THAT AFFECTED THE AREA HAVE DISSIPATED. 
THEREFORE THE FLASH FLOOD WARNING HAS BEEN ALLOWED TO EXPIRE.

LAT...LON 1799 6605 1810 6606 1810 6602 1809 6601
      1808 6602 1808 6601 1806 6600 1806 6598
      1798 6590

$$

JJA

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 23, 2:23 AM CDT	Areal Flood Advisory	JSJ	4 hr
Jul 23, 3:59 AM CDT	Special Marine Warning	JSJ	31 min
Jul 23, 7:04 AM CDT	Flash Flood Watch	JSJ	29 hr
Jul 23, 11:28 AM CDT	Areal Flood Advisory	JSJ	107 min
Jul 23, 11:32 AM CDT	Areal Flood Advisory	JSJ	102 min
Jul 23, 12:48 PM CDT	Areal Flood Advisory	JSJ	3 hr
Jul 23, 1:32 PM CDT	Special Marine Warning	JSJ	58 min
Jul 23, 2:51 PM CDT	Special Marine Warning	JSJ	39 min
Jul 23, 3:10 PM CDT	Special Marine Warning	JSJ	50 min
Jul 23, 3:38 PM CDT	Areal Flood Advisory	JSJ	112 min
Jul 23, 4:29 PM CDT	Areal Flood Advisory	JSJ	2 hr
Jul 23, 5:37 PM CDT	Flash Flood Warning	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.