Alert archive / Puerto Rico / Flash Flood Warnings in 2011

Flash Flood Warning 32, NWS JSJ

May 23, 2011

NWS JSJ issued this flash flood warning at May 23, 2011, 4:55 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: May 23, 2011, 4:55 PM CDT (21:55 UTC)
Expired: May 23, 2011, 10:45 PM CDT
In force: 6 hr
Issued by: NWS JSJ
Area: Storm-based polygon
Flood severity: None

The radar

The San Juan radar (TJUA), 114 km from the middle of the area, began a volume at 21:54 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.

867 
WGCA52 TJSJ 232155
FFWSJU
PRC003-005-099-240345-
/O.NEW.TJSJ.FF.W.0032.110523T2155Z-110524T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
555 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
     MOCA
     AGUADILLA
     AGUADA

* UNTIL 1145 PM AST

* AT 536 PM AST...THE USGS RIVER GAGES AT HIGHWAY 404 AND THE 
MARGARITA DAM INDICATED THAT THE CULEBRINAS RIVER WAS RISING AND 
LIKELY TO FLOOD IN THE WARNED AREA.

FOR THE RIO CULEBRINAS NEAR MOCA - MOCP4
     FLOOD STAGE - 24 FEET.
     AT 5:36 PM AST THE USGS SENSOR INDICATED THE RIVER HAD           
     RISEN TO...23 FEET. MINOR FLOODING IS FORECAST.

IT IS EXPECTED THAT THE INTERSECTION OF HIGHWAYS 111 AND 125 WILL  
BE FLOODED. FLOODING IS ALSO EXPECTED ALONG THE QUEBRADA GARCIA 
MENDEZ AND QUEBRADA MAESTRA. 


FOR THE RIO CULEBRINAS AT THE MARGARITA DAM - MODP4
     FLOOD STAGE - 15 FEET.
     AT 5:41 PM AST THE USGS SENSOR INDICATED THE RIVER HAD           
     RISEN TO...14.22 FEET. MINOR FLOODING IS ALSO FORECAST.

THE RIVER IS EXPECTED TO OVERFLOW ITS BANKS IN THE LOW LYING AREAS  
OF HIGHWAY 115...AND ALSO IN THE LOW LYING AREAS OF HIGHWAY 
418 IN COLOSO AND THE MADRE VIEJA BRIDGE.


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 1838 6718 1842 6718 1837 6705 1834 6705
      1834 6710

$$

SNELL

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

1 follow-up statement

200 
WGCA72 TJSJ 240338
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
1138 PM AST MON MAY 23 2011

PRC003-005-099-240348-
/O.EXP.TJSJ.FF.W.0032.000000T0000Z-110524T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOCA PR-AGUADILLA PR-AGUADA PR-
1138 PM AST MON MAY 23 2011

...THE FLASH FLOOD WARNING WILL EXPIRE AT 1145 PM AST FOR AGUADA...
AGUADILLA AND MOCA MUNICIPALITIES...

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

LAT...LON 1838 6718 1842 6718 1837 6705 1834 6705
      1834 6710

$$

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
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, 5:40 PM CDT	Flash Flood Warning	JSJ	3 hr
May 23, 5:53 PM CDT	Flash Flood Warning	JSJ	4 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.