Alert archive / Puerto Rico / Flash Flood Warnings in 2012

Flash Flood Warning 32, NWS JSJ

August 24, 2012

NWS JSJ issued this flash flood warning at Aug 24, 2012, 11:52 AM CDT. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 24, 2012, 11:52 AM CDT (16:52 UTC)
Expired: Aug 24, 2012, 2:45 PM CDT
In force: 3 hr
Issued by: NWS JSJ
Area: Storm-based polygon
Flood severity: None

The radar

The San Juan radar (TJUA), 14 km from the middle of the area, began a volume at 16:55 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.

What was reported inside it

Time	Report	Where	Remark
Aug 24, 12:45 PM CDT	FLASH FLOOD	San Lorenzo, PR	RIVER GRANDE DE LOIZA OUT OF ITS BANKS IN SECTOR LA MARINA IN SAN LORENZO.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The text

As transmitted, in the capitals the NWS used until 2016.

207 
WGCA52 TJSJ 241652
FFWSJU
PRC025-063-129-241945-
/O.NEW.TJSJ.FF.W.0032.120824T1652Z-120824T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
1252 PM AST FRI AUG 24 2012

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     CAGUAS
     GURABO
     SAN LORENZO

* UNTIL 345 PM AST

* AT 1246 PM AST...RUNOFF FROM PREVIOUS HEAVY RAINFALL HAS RESULTED 
IN SIGNIFICANT RISES ON SMALL STREAMS AND RIVERS ACROSS THESE 
MUNICIPALITIES. MOTORISTS DRIVING ALONG 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 1825 6604 1826 6599 1816 6594 1813 6597

$$

OMS

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
Aug 23, 10:11 PM CDT	Wind Advisory	JSJ	6 hr
Aug 23, 10:25 PM CDT	Small Craft Advisory	JSJ	40 hr
Aug 23, 10:47 PM CDT	Areal Flood Advisory	JSJ	10 hr
Aug 23, 10:54 PM CDT	Special Marine Warning	JSJ	81 min
Aug 23, 10:54 PM CDT	Special Marine Warning	JSJ	5 hr
Aug 24, 3:03 AM CDT	Flash Flood Warning	JSJ	110 min
Aug 24, 3:19 AM CDT	Areal Flood Advisory	JSJ	116 min
Aug 24, 5:54 AM CDT	Special Marine Warning	JSJ	111 min
Aug 24, 6:34 AM CDT	Areal Flood Advisory	JSJ	3 hr
Aug 24, 7:21 AM CDT	Areal Flood Advisory	JSJ	6 hr
Aug 24, 7:28 AM CDT	Special Marine Warning	JSJ	2 hr
Aug 24, 7:43 AM CDT	Flash Flood Warning	JSJ	3 hr
Aug 24, 8:01 AM CDT	Areal Flood Advisory	JSJ	7 hr
Aug 24, 8:19 AM CDT	Areal Flood Advisory	JSJ	7 hr
Aug 24, 9:25 AM CDT	Special Marine Warning	JSJ	2 hr
Aug 24, 9:53 AM CDT	Flash Flood Warning	JSJ	5 hr
Aug 24, 10:22 AM CDT	Special Marine Warning	JSJ	113 min
Aug 24, 11:55 AM CDT	Areal Flood Advisory	JSJ	3 hr
Aug 24, 12:18 PM CDT	Special Marine Warning	JSJ	117 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; local storm reports from the same archive; radar from the NEXRAD Level II archive.