Alert archive / Puerto Rico / Flash Flood Warnings in 2012

Flash Flood Warning 27, NWS JSJ

July 8, 2012

NWS JSJ issued this flash flood warning at Jul 8, 2012, 1:02 PM CDT. It was in force for 88 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 8, 2012, 1:02 PM CDT (18:02 UTC)
Expired: Jul 8, 2012, 2:30 PM CDT
In force: 88 min
Issued by: NWS JSJ
Area: Storm-based polygon
Flood severity: None

The radar

The San Juan radar (TJUA), 21 km from the middle of the area, began a volume at 18:03 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.

464 
WGCA52 TJSJ 081802
FFWSJU
PRC007-025-061-063-127-139-081930-
/O.NEW.TJSJ.FF.W.0027.120708T1802Z-120708T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
202 PM AST SUN JUL 8 2012

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     CAGUAS
     GUAYNABO
     GURABO
     SAN JUAN
     TRUJILLO ALTO
     AGUAS BUENAS

* UNTIL 330 PM AST

* AT 151 PM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
HEAVY RAIN CONTINUING IN A NARROW LINE FROM NORTHWEST GURABO TO 
SOUTHERN GUAYNABO. RIO CANAS WAS RISING RAPIDLY AND FLOODED JUST 
PRIOR TO 1:50 PM AST. IT MAY RISE SEVERAL MORE FEET ABOVE ITS FLOOD 
STAGE OF 16 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

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 1829 6611 1833 6613 1833 6603 1832 6601
      1828 6600 1829 6605

$$

SNELL

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

1 follow-up statement

816 
WGCA72 TJSJ 081927
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
327 PM AST SUN JUL 8 2012

PRC007-025-061-063-127-139-081934-
/O.EXP.TJSJ.FF.W.0027.000000T0000Z-120708T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CAGUAS PR-GUAYNABO PR-GURABO PR-SAN JUAN PR-TRUJILLO ALTO PR-
AGUAS BUENAS PR-
327 PM AST SUN JUL 8 2012

...THE FLASH FLOOD WARNING WILL EXPIRE AT 330 PM AST FOR AGUAS
BUENAS...TRUJILLO ALTO...SAN JUAN...GURABO...GUAYNABO AND CAGUAS
MUNICIPALITIES...

THE HEAVY SHOWERS THAT AFFECTED THIS AREA HAVE WEAKENED AND MOVED 
AWAY. NO ADDITIONAL SIGNIFICANT SHOWERS ARE EXPECTED IN THE NEXT FEW 
HOURS. THEREFORE...THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE 
AT 330 PM AST.

LAT...LON 1829 6611 1833 6613 1833 6603 1832 6601
      1828 6600 1829 6605

$$

ET

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
Jul 8, 12:04 PM CDT	Areal Flood Advisory	JSJ		3 hr
Jul 8, 1:23 PM CDT	Areal Flood Advisory	JSJ		112 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.