Alert archive / Puerto Rico / Flash Flood Warnings in 2012

Flash Flood Warning 17, NWS JSJ

May 8, 2012

NWS JSJ issued this flash flood warning at May 8, 2012, 3:14 PM CDT. It was in force for 2 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 8, 2012, 3:14 PM CDT (20:14 UTC)
Expired: May 8, 2012, 5:15 PM CDT
In force: 2 hr
Issued by: NWS JSJ
Area: Storm-based polygon
Flood severity: None

The radar

The San Juan radar (TJUA), 57 km from the middle of the area, began a volume at 20:14 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.

917 
WGCA52 TJSJ 082014
FFWSJU
PRC039-141-082215-
/O.NEW.TJSJ.FF.W.0017.120508T2014Z-120508T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
414 PM AST TUE MAY 8 2012

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     CIALES
     UTUADO

* UNTIL 615 PM AST

* AT 408 PM AST...DOPPLER WEATHER RADAR INDICATED VERY HEAVY RAIN IN 
THE WARNED AREA. THIS HAS RESULTED IN SIGNIFICANT RISES ON RIO LIMON 
AND RIO CAONILLAS IN UTUADO AND CIALES. RESIDENTS IN FLOOD PRONE 
AREAS SHOULD MOVE TO HIGHER GROUND IMMEDIATELY AND NEVER TRY TO 
CROSS A FLOODED ROADWAY.

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 1825 6654 1824 6656 1828 6656 1830 6657
      1828 6660 1824 6660 1825 6662 1824 6663
      1824 6667 1832 6667 1833 6655

$$

ER

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

1 follow-up statement

649 
WGCA72 TJSJ 082213
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
613 PM AST TUE MAY 8 2012

PRC039-141-082222-
/O.EXP.TJSJ.FF.W.0017.000000T0000Z-120508T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CIALES PR-UTUADO PR-
613 PM AST TUE MAY 8 2012

...THE FLASH FLOOD WARNING WILL EXPIRE AT 615 PM AST FOR UTUADO AND
CIALES MUNICIPALITIES...

DOPPLER RADAR INDICATED THAT THE HEAVY RAIN WHICH AFFECTED THIS AREA 
HAD MOVED. ONLY LIGHT RAIN CONTINUES OVER THESE MUNICIPALITIES. 
IN ADDITION...RIVERS ACROSS THESE MUNICIPALITIES ARE NOW BELOW FLOOD 
STAGE. THEREFORE...THE FLASH FLOOD WARNING FOR THESE AREAS WILL BE 
ALLOWED TO EXPIRE AT 615 PM AST.

LAT...LON 1825 6654 1824 6656 1828 6656 1830 6657
      1828 6660 1824 6660 1825 6662 1824 6663
      1824 6667 1832 6667 1833 6655

$$

ER

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 7, 7:54 PM CDT	Areal Flood Advisory	JSJ	105 min
May 7, 7:56 PM CDT	Areal Flood Advisory	JSJ	110 min
May 8, 2:07 PM CDT	Areal Flood Advisory	JSJ	4 hr
May 8, 2:46 PM CDT	Areal Flood Advisory	JSJ	119 min
May 8, 4:30 PM CDT	Flash Flood Warning	JSJ	6 hr
May 8, 4:46 PM CDT	Areal Flood Advisory	JSJ	3 hr
May 8, 4:53 PM CDT	Flash Flood Warning	JSJ	6 hr

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.