Areal Flood Advisory 310, NWS JSJ

Issued

Aug 17, 2012, 12:30 PM CDT (17:30 UTC)

Expired

Aug 17, 2012, 3:30 PM CDT

In force

3 hr

Issued by

NWS JSJ

Area

Storm-based polygon

The San Juan radar (TJUA), 41 km from the middle of the area, began a volume at 17:34 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.

517 
WGCA82 TJSJ 171730
FLSSJU

FLOOD ADVISORY
NATIONAL WEATHER SERVICE SAN JUAN PR
130 PM AST FRI AUG 17 2012

PRC047-051-091-101-105-135-143-145-171930-
/O.NEW.TJSJ.FA.Y.0310.120817T1730Z-120817T1930Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COROZAL PR-MANATI PR-MOROVIS PR-NARANJITO PR-VEGA ALTA PR-
VEGA BAJA PR-DORADO PR-TOA ALTA PR-
130 PM AST FRI AUG 17 2012

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED AN

* URBAN AND SMALL STREAM FLOOD ADVISORY FOR MINOR FLOODING OF POOR
  DRAINAGE AREAS IN
  FOR THE FOLLOWING MUNICIPALITIES...

  IN PUERTO RICO
     COROZAL...MANATI...MOROVIS...NARANJITO...VEGA ALTA...VEGA
     BAJA...DORADO AND TOA ALTA

* UNTIL 330 PM AST

* AT 125 PM AST...DOPPLER RADAR INDICATED VERY HEAVY RAIN IN THE   
ADVISORY AREA. THE HEAVIEST SHOWERS AND THUNDERSTORMS HAVE BEEN 
PRODUCING RAIN RATES BETWEEN 1 TO 1.5 INCHES PER HOUR. ADDITIONAL 
RAINFALL OF 1 TO 2 INCHES ARE POSSIBLE THROUGH 330 PM AST.

EXCESSIVE RUNOFF WILL CAUSE FLOODING OF CREEKS AND STREAMS...ROADS
AND ROADSIDE CULVERTS. THE HEAVY RAINS COULD ALSO TRIGGER ROCK AND
MUDSLIDES IN STEEP TERRAIN.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED 
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN. MOVE TO 
HIGHER GROUND.

&&

LAT...LON 1848 6622 1847 6622 1845 6623 1845 6626
      1840 6625 1840 6623 1839 6621 1829 6623
      1834 6646 1837 6646 1836 6652 1848 6652
      1849 6625

$$

ER

223 
WGCA82 TJSJ 171914
FLSSJU

FLOOD ADVISORY
NATIONAL WEATHER SERVICE SAN JUAN PR
314 PM AST FRI AUG 17 2012

PRC047-051-091-101-105-135-143-145-172030-
/O.EXT.TJSJ.FA.Y.0310.000000T0000Z-120817T2030Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COROZAL PR-MANATI PR-MOROVIS PR-NARANJITO PR-VEGA ALTA PR-
VEGA BAJA PR-DORADO PR-TOA ALTA PR-
314 PM AST FRI AUG 17 2012

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS EXTENDED THE

* URBAN AND SMALL STREAM FLOOD ADVISORY FOR MINOR FLOODING OF POOR
  DRAINAGE AREAS IN
  FOR THE FOLLOWING MUNICIPALITIES...

  IN PUERTO RICO
     COROZAL...MANATI...MOROVIS...NARANJITO...VEGA ALTA...VEGA
     BAJA...DORADO AND TOA ALTA

* UNTIL 430 PM AST

DOPPLER RADAR CONTINUES TO INDICATE NUMEROUS SHOWERS AND THUNDERSTORMS 
IN THE ADVISORY AREA. THESE AREAS OF SHOWERS AND THUNDERSTORMS HAVE THE 
CAPABILITY OF PRODUCING MODERATE TO LOCALLY HEAVY RAINFALL WHICH WILL 
LEAD TO RAPID RISES ON SMALL STREAMS AND CREEKS...AS WELL AS MINOR 
FLOODING ALONG ROADWAYS...THROUGH AT LEAST 430 PM AST.

EXCESSIVE RUNOFF WILL CAUSE FLOODING OF CREEKS AND STREAMS...ROADS
AND ROADSIDE CULVERTS. THE HEAVY RAINS COULD ALSO TRIGGER ROCK AND
MUDSLIDES IN STEEP TERRAIN.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

&&

LAT...LON 1848 6622 1847 6622 1845 6623 1845 6626
      1840 6625 1840 6623 1839 6621 1829 6623
      1834 6646 1837 6646 1836 6652 1848 6652
      1849 6625

$$

OMS

Areal Flood Advisories in Puerto Rico, 2012Every areal flood advisory in 2012

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.