Alert archive / Puerto Rico / Flash Flood Warnings in 2011

Flash Flood Warning 139, NWS JSJ

September 13, 2011

NWS JSJ issued this flash flood warning at Sep 13, 2011, 11:47 AM CDT. It was in force for 5 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
Sep 13, 2011, 11:47 AM CDT (16:47 UTC)
Expired
Sep 13, 2011, 4:45 PM CDT
In force
5 hr
Issued by
NWS JSJ
Area
Storm-based polygon
Flood severity
None

The radar

The San Juan radar (TJUA), 44 km from the middle of the area, began a volume at 16:50 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.

754 
WGCA52 TJSJ 131647
FFWSJU
PRC029-031-037-053-077-089-103-119-131945-
/O.NEW.TJSJ.FF.W.0139.110913T1647Z-110913T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
1247 PM AST TUE SEP 13 2011

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     CANOVANAS
     CEIBA
     NAGUABO
     JUNCOS
     FAJARDO
     CAROLINA
     LUQUILLO
     RIO GRANDE

* UNTIL 345 PM AST

* AT 1240 PM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED  
VERY HEAVY RAIN OVER THE WARNED AREA. RUNOFF FROM THIS RAINFALL WILL 
RESULT IN RAPID RISES AND FLASH FLOODING IN LOW LYING URBAN 
AREAS...CREEKS...STREAMS AND RIVERS. IN ADDITION...MUDSLIDES AND 
DEBRIS FLOW CAN BE EXPECTED IN AREAS OF STEEP TERRAIN. 

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 1842 6581 1843 6579 1842 6577 1839 6574
      1840 6572 1837 6568 1840 6558 1835 6562
      1834 6561 1823 6565 1828 6586 1827 6592
      1830 6594 1845 6586

$$

JJA

ADDITIONAL INFORMATION CAN BE FOUND AT /USE LOWER CASE LETTERS/:
     HTTP://WWW.WEATHER.GOV/SANJUAN
2 follow-up statements
418 
WGCA52 TJSJ 131950
FFWSJU
PRC029-031-037-053-077-089-103-119-132145-
/O.EXT.TJSJ.FF.W.0139.000000T0000Z-110913T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
350 PM AST TUE SEP 13 2011

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     JUNCOS
     LUQUILLO
     NAGUABO
     CEIBA
     CANOVANAS
     FAJARDO
     CAROLINA
     RIO GRANDE

* UNTIL 545 PM AST

* AT 336 PM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR             
  INDICATED THAT ALTHOUGH MOST OF THE HEAVY RAINFALL HAD             
  ENDED...THERE WERE STILL AREAS OF MODERATE RAINFALL APPROACHING 
  OR ACROSS THE WARNED AREA. THIS ALONG WITH THE EXCESSIVE RUNOFF    
  WILL MAINTAIN RIVERS AND STREAMS AT DANGEROUSLY HIGH LEVELS.IN     
  ADDITION THE U.S.G.S RIVER SENSORS INDICATED THAT SOME RIVER       
  REMAIN ABOVE FLOOD STAGE ALTHOUGH LOWLY DECLINING. FR THESE        
  REASONS THE FLASH FLOOD WARNING HAS BEEN EXTENDED UNTIL 545 PM    
  AST.     

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND
UNDERPASSES. ADDITIONALLY...ROADS AND LANDS ALONG THE BANKS OF
CREEKS...STREAMS AND OTHER LOW LYING AND POOR DRAINAGE AREAS ARE
SUBJECT TO FLOODING. MOTORISTS ARE URGED TO AVOID ROADS WHERE
EXCESSIVE PONDING IS OBSERVED.

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER
GROUND.

&&

LAT...LON 1842 6581 1843 6579 1842 6577 1839 6574
      1840 6572 1837 6568 1840 6558 1835 6562
      1834 6561 1823 6565 1828 6586 1826 6592
      1830 6594 1845 6586

$$

RAM

ADDITIONAL INFORMATION CAN BE FOUND AT /USE LOWER CASE LETTERS/:
     HTTP://WWW.WEATHER.GOV/SANJUAN
036 
WGCA72 TJSJ 132141
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
541 PM AST TUE SEP 13 2011

PRC029-031-037-053-077-089-103-119-132150-
/O.EXP.TJSJ.FF.W.0139.000000T0000Z-110913T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JUNCOS PR-LUQUILLO PR-NAGUABO PR-CEIBA PR-CANOVANAS PR-FAJARDO PR-
CAROLINA PR-RIO GRANDE PR-
541 PM AST TUE SEP 13 2011

...THE FLASH FLOOD WARNING WILL EXPIRE AT 545 PM AST FOR RIO
GRANDE...CAROLINA...FAJARDO...CANOVANAS...CEIBA...NAGUABO...LUQUILLO
AND JUNCOS MUNICIPALITIES...

DOPPLER RADAR INDICATED THAT THE HEAVY RAIN WHICH AFFECTED THIS AREA
HAD DISSIPATED OR MOVED AWAY. NO SIGNIFICANT ADDITIONAL RAINFALL IS 
EXPECTED ACROSS THESE AREAS AT THIS TIME. HOWEVER...RESIDENTS AND 
MOTORISTS SHOULD HOWEVER BE ALERT TO PONDING OF WATER ON ROADWAYS 
AND ALLOW TIME FOR STREAMS...CREEKS AND RIVERS TO RETURN TO NORMAL 
LEVELS.

LAT...LON 1842 6581 1843 6579 1842 6577 1839 6574
      1840 6572 1837 6568 1840 6558 1835 6562
      1834 6561 1823 6565 1828 6586 1826 6592
      1830 6594 1845 6586

$$

CASTRO

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.

IssuedProductOfficeCountiesLasted
Sep 12, 7:14 PM CDTFlash Flood WarningJSJ5 hr
Sep 12, 8:58 PM CDTAreal Flood AdvisoryJSJ93 min
Sep 12, 10:18 PM CDTFlash Flood WarningJSJ3 hr
Sep 12, 11:43 PM CDTAreal Flood AdvisoryJSJ2 hr
Sep 13, 12:11 AM CDTFlash Flood WarningJSJ9 hr
Sep 13, 12:24 AM CDTFlash Flood WarningJSJ19 hr
Sep 13, 2:33 AM CDTFlash Flood WarningJSJ6 hr
Sep 13, 3:39 AM CDTSpecial Marine WarningJSJ66 min
Sep 13, 3:48 AM CDTTornado WarningJSJ27 min
Sep 13, 4:25 AM CDTAreal Flood AdvisoryJSJ2 hr
Sep 13, 4:42 AM CDTSpecial Marine WarningJSJ2 hr
Sep 13, 5:35 AM CDTAreal Flood AdvisoryJSJ78 min
Sep 13, 6:24 AM CDTAreal Flood AdvisoryJSJ3 hr
Sep 13, 6:46 AM CDTFlash Flood WarningJSJ3 hr
Sep 13, 7:01 AM CDTAreal Flood AdvisoryJSJ3 hr
Sep 13, 7:13 AM CDTAreal Flood AdvisoryJSJ6 hr
Sep 13, 8:23 AM CDTFlash Flood WarningJSJ3 hr
Sep 13, 8:39 AM CDTFlash Flood WarningJSJ3 hr
Sep 13, 9:02 AM CDTAreal Flood AdvisoryJSJ3 hr
Sep 13, 9:39 AM CDTAreal Flood WarningJSJ10 hr
Sep 13, 9:48 AM CDTFlash Flood WarningJSJ3 hr
Sep 13, 10:01 AM CDTAreal Flood WarningJSJ20 hr
Sep 13, 10:06 AM CDTAreal Flood AdvisoryJSJ2 hr
Sep 13, 10:59 AM CDTAreal Flood WarningJSJ7 hr
Sep 13, 11:02 AM CDTFlash Flood WarningJSJ5 hr
Sep 13, 11:19 AM CDTAreal Flood WarningJSJ6 hr
Sep 13, 12:18 PM CDTAreal Flood WarningJSJ6 hr
Sep 13, 12:58 PM CDTAreal Flood WarningJSJ13 hr
Sep 13, 4:07 PM CDTAreal Flood WarningJSJ6 hr

Nearby

Flash Flood Warnings in Puerto Rico, 2011Every flash flood warning 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.