Alert archive / Puerto Rico / Flash Flood Warnings in 2011

Flash Flood Warning 34, NWS JSJ

May 23, 2011

NWS JSJ issued this flash flood warning at May 23, 2011, 5:53 PM CDT. It was in force for 4 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: May 23, 2011, 5:53 PM CDT (22:53 UTC)
Expired: May 23, 2011, 10:18 PM CDT
In force: 4 hr
Issued by: NWS JSJ
Area: Storm-based polygon
Flood severity: None

The radar

The San Juan radar (TJUA), 56 km from the middle of the area, began a volume at 22:53 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.

636 
WGCA52 TJSJ 232253
FFWSJU
PRC017-039-091-101-240445-
/O.NEW.TJSJ.FF.W.0034.110523T2253Z-110524T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
653 PM AST MON MAY 23 2011

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     CIALES
     MOROVIS
     BARCELONETA
     MANATI

* UNTIL 1245 AM AST

* AT 634 PM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
THAT RAIN HAD ENDED OVER AND UPSTREAM FROM THE WARNED AREA. HOWEVER 
RUN OFF FROM PREVIOUS HEAVY RAINS ARE MOVING DOWNSTREAM AND ARE 
EXPECTED TO SEND THE RIO GRANDE DE MANATI INTO FLOOD.

FOR THE RIO GRANDE DE MANATI NEAR MANATI- MANP4
     FLOOD STAGE - 25 FEET.
     AT 634 PM AST...THE USGS SENSOR INDICATED THE RIVER HAD 
     RISEN TO...21.81 FEET. MINOR FLOODING IS FORECAST.

AT FLOOD STAGE THE RIVER WILL THREATEN ROAD 667 IN SECTOR CACHETE  
AND WILL BE OUT OF ITS BANKS IN SECTOR CACHETE OVER ROAD 666.

DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.

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 1841 6651 1844 6655 1849 6656 1848 6650
      1831 6643 1831 6648

$$

SNELL

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

1 follow-up statement

506 
WGCA72 TJSJ 240318
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
1118 PM AST MON MAY 23 2011

PRC017-039-091-101-240326-
/O.CAN.TJSJ.FF.W.0034.000000T0000Z-110524T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CIALES PR-MOROVIS PR-BARCELONETA PR-MANATI PR-
1118 PM AST MON MAY 23 2011

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR MANATI...
BARCELONETA...MOROVIS AND CIALES MUNICIPALITIES...

RESIDENTS AND MOTORISTS ACROSS THESE AREAS SHOULD HOWEVER BE ALERT 
TO PONDING OF WATER ON ROADWAYS AND ALLOW TIME FOR STREAMS...CREEKS 
AND RIVERS TO RETURN TO NORMAL LEVELS.

LAT...LON 1841 6651 1844 6655 1849 6656 1848 6650
      1831 6643 1831 6648

$$

MARTINEZ

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 23, 11:51 AM CDT	Areal Flood Advisory	JSJ	114 min
May 23, 12:04 PM CDT	Areal Flood Advisory	JSJ	3 hr
May 23, 1:37 PM CDT	Areal Flood Advisory	JSJ	113 min
May 23, 1:39 PM CDT	Areal Flood Advisory	JSJ	111 min
May 23, 2:33 PM CDT	Flash Flood Warning	JSJ	3 hr
May 23, 2:55 PM CDT	Areal Flood Advisory	JSJ	3 hr
May 23, 3:01 PM CDT	Areal Flood Advisory	JSJ	119 min
May 23, 4:55 PM CDT	Flash Flood Warning	JSJ	6 hr
May 23, 5:40 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.