Alert archive / Puerto Rico / Areal Flood Advisories in 2011

Areal Flood Advisory 310, NWS JSJ

July 19, 2011

NWS JSJ issued this areal flood advisory at Jul 19, 2011, 9:27 AM CDT. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jul 19, 2011, 9:27 AM CDT (14:27 UTC)
Expired: Jul 19, 2011, 11:30 AM CDT
In force: 2 hr
Issued by: NWS JSJ
Area: Storm-based polygon

The radar

The San Juan radar (TJUA), 14 km from the middle of the area, began a volume at 14:26 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.

228 
WGCA82 TJSJ 191427
FLSSJU

FLOOD ADVISORY
NATIONAL WEATHER SERVICE SAN JUAN PR
1027 AM AST TUE JUL 19 2011

PRC025-063-077-129-191630-
/O.NEW.TJSJ.FA.Y.0310.110719T1427Z-110719T1630Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CAGUAS PR-JUNCOS PR-GURABO PR-SAN LORENZO PR-
1027 AM AST TUE JUL 19 2011

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED AN

* URBAN AND SMALL STREAM FLOOD ADVISORY FOR RAPID RIVER RISES IN
  FOR THE FOLLOWING MUNICIPALITIES...

  IN PUERTO RICO
     CAGUAS...JUNCOS...GURABO AND SAN LORENZO

* UNTIL 1230 PM AST

* AT 1024 AM AST...DOPPLER WEATHER RADAR INDICATED SHOWERS AND 
ISOLATED THUNDERSTORMS WITH VERY HEAVY RAIN MOVING TOWARDS OR ACROSS 
THESE AREAS. THE LOCALLY HEAVY RAINFALL MAY LEAD TO QUICK RISES IN 
RIVERS AND SMALL STREAMS...AS WELL AS MINOR FLOODING IN URBAN AND 
POOR DRAINAGE AREAS AS THE STORMS PASS BY. 

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 1821 6605 1829 6604 1830 6595 1822 6592
      1814 6593 1813 6603

$$

RAM

2 follow-up statements

220 
WGCA82 TJSJ 191559
FLSSJU

FLOOD ADVISORY
NATIONAL WEATHER SERVICE SAN JUAN PR
1159 AM AST TUE JUL 19 2011

PRC025-063-077-129-191630-
/O.CON.TJSJ.FA.Y.0310.000000T0000Z-110719T1630Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CAGUAS PR-JUNCOS PR-GURABO PR-SAN LORENZO PR-
1159 AM AST TUE JUL 19 2011

...THE FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1230 PM AST FOR THE
FOLLOWING MUNICIPALITIES...

  IN PUERTO RICO
     CAGUAS...JUNCOS...GURABO AND SAN LORENZO

ALTHOUGH THE HEAVY RAINFALL ACROSS THESE AREAS HAS MOVE AWAY... 
RUNOFF FROM PREVIOUS HEAVY RAINFALL OVER THE AREA WILL CONTINUE TO 
POSE MINOR FLOODING PROBLEMS OF SMALL STREAMS... CREEKS...RIVERS... 
ROADWAYS...POOR DRAINAGE AND LOW LYING AREAS AT LEAST UNTIL 12:30 PM 
AST.

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. MOVE TO HIGHER GROUND.

&&

LAT...LON 1821 6605 1829 6604 1830 6595 1822 6592
      1814 6593 1813 6603

$$
RAM

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

940 
WGCA82 TJSJ 191629
FLSSJU

FLOOD ADVISORY
NATIONAL WEATHER SERVICE SAN JUAN PR
1229 PM AST TUE JUL 19 2011

PRC025-063-077-129-191634-
/O.EXP.TJSJ.FA.Y.0310.000000T0000Z-110719T1630Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CAGUAS PR-JUNCOS PR-GURABO PR-SAN LORENZO PR-
1229 PM AST TUE JUL 19 2011

...THE FLOOD ADVISORY WILL EXPIRE AT 1230 PM AST FOR SAN LORENZO...
GURABO...JUNCOS AND CAGUAS MUNICIPALITIES...

AT 1222 PM AST...DOPPLER WEATHER RADAR INDICATED THAT THE MODERATE 
TO HEAVY RAIN WHICH AFFECTED THIS AREA HAD DISSIPATED OR MOVED AWAY. 
NO ADDITIONAL HEAVY RAINFALL IS EXPECTED AT THIS TIME. THEREFORE THE 
URBAN AND SMALL STREAM FLOOD ADVISORY WILL BE ALLOWED TO EXPIRE AT 
12:30 PM AST. A FEW SHOWERS MAY LINGER ACROSS THE ADVISORY AREA 
DURING THE NEXT HOUR OR SO...THEREFORE RESIDENTS...VISITORS AND 
MOTORISTS SHOULD BE ALERT TO PONDING OF WATER ON ROADWAYS...IN POOR 
DRAINAGE AREA...AND ALSO ALLOW TIME FOR RIVERS AND STREAMS TO RETURN 
TO NORMAL LEVELS. 

&&

LAT...LON 1821 6605 1829 6604 1830 6595 1822 6592
      1814 6593 1813 6603

$$
RAM


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
Jul 18, 7:39 PM CDT	Areal Flood Advisory	JSJ	72 min
Jul 19, 9:46 AM CDT	Areal Flood Advisory	JSJ	2 hr
Jul 19, 10:52 AM CDT	Areal Flood Advisory	JSJ	113 min
Jul 19, 11:22 AM CDT	Areal Flood Advisory	JSJ	113 min
Jul 19, 3:23 PM CDT	Areal Flood Advisory	JSJ	3 hr

Nearby

Areal Flood Advisories in Puerto Rico, 2011 Every areal flood advisory in 2011

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.