Alert archive / Puerto Rico / Flash Flood Warnings in 2007

Flash Flood Warning 64, NWS JSJ

December 11, 2007

NWS JSJ issued this flash flood warning at Dec 11, 2007, 9:21 PM CST. 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: Dec 11, 2007, 9:21 PM CST (03:21 UTC)
Expired: Dec 12, 2007, 3:15 AM CST
In force: 6 hr
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 03:24 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.

000 
WGCA52 TJSJ 120326
FFWSJU
PRC007-021-025-035-041-061-063-077-085-127-129-139-120915-
/O.NEW.TJSJ.FF.W.0064.071212T0321Z-071212T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
1121 PM AST TUE DEC 11 2007

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     BAYAMON
     CAGUAS
     CIDRA
     CAYEY
     AGUAS BUENAS
     JUNCOS
     GURABO
     SAN LORENZO
     TRUJILLO ALTO
     LAS PIEDRAS
     GUAYNABO
     SAN JUAN

* UNTIL 515 AM AST

* AT 1118 PM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED
  TO INDICATE VERY HEAVY RAINFALL CAPABLE OF PRODUCING FLASH
  FLOODING OVER THE WARNED AREA.  IN ADDITION...U.S.G.S. GAGES ALONG
  THE RIO DE BAYAMON AND THE RIO CAGUITAS HAVE INDICATED FLOODING IS
  OCCURRING ALONG THESE RIVERS. 

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...ROADS
AND LANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING
AREAS ARE SUBJECT TO FLOODING.

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 1843 6605 1814 6588 1809 6615 1842 6617
TIME...MOT...LOC 0321Z 180DEG 0KT 1825 6603

$$

JPC

The office that day

Everything else NWS JSJ issued on the same UTC day.

Issued	Product	Office	Lasted
Dec 11, 6:35 PM CST	Flash Flood Warning	JSJ	4 hr
Dec 11, 9:00 PM CST	Special Marine Warning	JSJ	2 hr
Dec 11, 10:27 PM CST	Flash Flood Warning	JSJ	6 hr
Dec 11, 11:45 PM CST	Marine Weather Statement	JSJ	7 hr
Dec 12, 1:57 AM CST	Flash Flood Warning	JSJ	6 hr

Nearby

Flash Flood Warnings in Puerto Rico, 2007 Every flash flood warning in 2007

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.