Alert archive / Puerto Rico / Flash Flood Warnings in 2012

Flash Flood Warning 2, NWS JSJ

March 12, 2012

NWS JSJ issued this flash flood warning at Mar 12, 2012, 7:02 PM CDT. It was in force for 79 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: Mar 12, 2012, 7:02 PM CDT (00:02 UTC)
Expired: Mar 12, 2012, 8:21 PM CDT
In force: 79 min
Issued by: NWS JSJ
Area: Storm-based polygon
Flood severity: None

The radar

The San Juan radar (TJUA), 58 km from the middle of the area, began a volume at 00:04 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.

227 
WGCA52 TJSJ 130002
FFWSJU
PRC017-091-130400-
/O.NEW.TJSJ.FF.W.0002.120313T0002Z-120313T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
802 PM AST MON MAR 12 2012

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     BARCELONETA
     MANATI

* UNTIL MIDNIGHT AST

* AT 758 PM AST...EXCESSIVE RUNOFF FROM PREVIOUS HEAVY RAINFALL HAS 
RESULTED IN SIGNIFICANT RISES ON RIO GRANDE DE MANATI. THE CURRENT 
RIVER STAGE IS 24.87 FEET AND RAISING. THE FLOOD STAGE IS 25.0 FEET. 
MOTORISTS DRIVING ALONG THE RIO GRANDE DE MANATI IN FLOOD PRONE 
AREAS SHOULD EXERCISE EXTREME CAUTION. MOVE TO HIGHER GROUND 
IMMEDIATELY AND NEVER TRY TO CROSS A FLOODED ROADWAY.

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 6652 1843 6655 1848 6657 1848 6651
      1845 6651 1842 6648 1838 6647 1837 6651

$$

FIGUEROA

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

1 follow-up statement

212 
WGCA72 TJSJ 130121
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
921 PM AST MON MAR 12 2012

PRC017-091-130125-
/O.CAN.TJSJ.FF.W.0002.000000T0000Z-120313T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BARCELONETA PR-MANATI PR-
921 PM AST MON MAR 12 2012

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

U.S.G.S RIVER GAGE SENSORS AT RIO GRANDE DE MANATI ACROSS MANATI AND 
BARCELONETA INDICATED THAT THE RIVER LEVEL WAS BELOW FLOOD STAGE AND 
CONTINUE TO RECEDING SLOWLY. FOR THAT REASON THE FLASH FLOOD WARNING 
FOR RIO GRANDE DE MANATI ACROSS THE MUNICIPALITIES OF MANATI AND 
BARCELONETA HAS BEEN CANCELLED. 

HOWEVER...RESIDENTS AND MOTORISTS ACROSS THESE AREAS SHOULD BE ALERT 
TO PONDING OF WATER ON ROADWAYS AND ALLOW TIME FOR STREAMS AND 
CREEKS TO RETURN TO NORMAL LEVELS.
 
LAT...LON 1841 6652 1843 6655 1848 6657 1848 6651
      1845 6651 1842 6648 1838 6647 1837 6651

$$

FIGUEROA

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
Mar 13, 3:09 PM CDT	Areal Flood Advisory	JSJ		97 min

Nearby

Flash Flood Warnings in Puerto Rico, 2012 Every flash flood warning in 2012

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.