Alert archive / Puerto Rico / Flash Flood Warnings in 2011

Flash Flood Warning 149, NWS JSJ

October 26, 2011

NWS JSJ issued this flash flood warning at Oct 26, 2011, 3:21 PM CDT. It was in force for 6 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: Oct 26, 2011, 3:21 PM CDT (20:21 UTC)
Expired: Oct 26, 2011, 9:15 PM CDT
In force: 6 hr
Issued by: NWS JSJ
Area: Storm-based polygon
Flood severity: None

The radar

The San Juan radar (TJUA), 111 km from the middle of the area, began a volume at 20:21 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
Oct 26, 4:00 PM CDT	FLASH FLOOD	Hormigueros, PR	ROUTES 114 AND 309 FLOODED DUE TO THE GUANAJIBO RIVER OUT OF ITS BANKS.
Oct 26, 6:10 PM CDT	FLASH FLOOD	San German, PR	ROUTE 114 FLOODED IN BARRIO COTO DUE TO THE GUANAJIBO RIVER OUT OF ITS BANKS. ONE PERSON BEING RESCUED AT THIS TIME.

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.

124 
WGCA52 TJSJ 262021
FFWSJU
PRC023-067-097-125-270215-
/O.NEW.TJSJ.FF.W.0149.111026T2021Z-111027T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
421 PM AST WED OCT 26 2011

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     HORMIGUEROS
     SAN GERMAN
     CABO ROJO
     MAYAGUEZ

* UNTIL 1015 PM AST

* AT 416 PM AST...RUNOFF FROM PREVIOUS HEAVY RAINFALL HAS CAUSED 
SHARP RISES ON THE GUANAJIBO RIVER. AT 4:00 PM AST...USGS SENSORS 
INDICATED THE RIVER AT 17.88 FEET AND RISING RAPIDLY AND FLOOD STAGE 
IS 20 FEET. THE RIVER IS FORECAST TO CREST AROUND 20.5 FEET AROUND 
8 PM. AT 20.3 FEET...THE RIVER FLOODS ROUTES 114 AND 347 FROM SAN 
GERMAN DOWNSTREAM TO CABO ROJO AND MAYAGUEZ.  

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 1811 6703 1807 6705 1813 6719 1816 6720
      1817 6719 1818 6718

$$

ROSA 

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

2 follow-up statements

797 
WGCA72 TJSJ 262303
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
703 PM AST WED OCT 26 2011

PRC023-067-097-125-270215-
/O.CON.TJSJ.FF.W.0149.000000T0000Z-111027T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HORMIGUEROS PR-SAN GERMAN PR-CABO ROJO PR-MAYAGUEZ PR-
703 PM AST WED OCT 26 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM AST FOR
MAYAGUEZ...CABO ROJO...SAN GERMAN AND HORMIGUEROS MUNICIPALITIES...

...MINOR FLOODING IS OCCURRING ALONG THE GUANAJIBO RIVER IN 
HORMIGUEROS...

AT 655 PM AST...EMERGENCY MANAGERS IN HORMIGUEROS INDICATED THE 
GUANAJIBO RIVER WAS OUT OF ITS BANKS AND AFFECTING ROUTES 114 AND 
309 IN SECTOR BAJURA. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN SAN
JUAN.

&&

LAT...LON 1811 6703 1807 6705 1813 6719 1816 6720
      1817 6719 1818 6718

$$

ROSA

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

292 
WGCA72 TJSJ 270213
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
1013 PM AST WED OCT 26 2011

PRC023-067-097-125-270222-
/O.EXP.TJSJ.FF.W.0149.000000T0000Z-111027T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HORMIGUEROS PR-SAN GERMAN PR-CABO ROJO PR-MAYAGUEZ PR-
1013 PM AST WED OCT 26 2011

...THE FLASH FLOOD WARNING WILL EXPIRE AT 1015 PM AST FOR MAYAGUEZ...
CABO ROJO...SAN GERMAN AND HORMIGUEROS MUNICIPALITIES...

THE FLASH FLOOD WARNING HAS BEEN REPLACED WITH A FLOOD WARNING.

LAT...LON 1811 6703 1807 6705 1813 6719 1816 6720
      1817 6719 1818 6718

$$

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	Counties	Lasted
Oct 26, 12:44 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; local storm reports from the same archive; radar from the NEXRAD Level II archive.