Alert archive / Puerto Rico / Flash Flood Warnings in 2011

Flash Flood Warning 5, NWS JSJ

April 15, 2011

NWS JSJ issued this flash flood warning at Apr 15, 2011, 1:13 PM CDT. It was in force for 2 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: Apr 15, 2011, 1:13 PM CDT (18:13 UTC)
Expired: Apr 15, 2011, 3:37 PM CDT
In force: 2 hr
Issued by: NWS JSJ
Area: Storm-based polygon
Flood severity: None

The radar

The San Juan radar (TJUA), 60 km from the middle of the area, began a volume at 18:16 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.

085 
WGCA52 TJSJ 151813
FFWSJU
PRC059-111-113-152115-
/O.NEW.TJSJ.FF.W.0005.110415T1813Z-110415T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
213 PM AST FRI APR 15 2011

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     GUAYANILLA
     PONCE
     PENUELAS

* UNTIL 515 PM AST

* AT 207 PM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  STRONG THUNDERSTORM NEARLY STATIONARY NEAR THE PENUELAS AND        
  PONCE COUNTY LINE WITH RAINFALL RATES OF UP TO FIVE INCHES AN      
  HOUR. THIS AMOUNT OF RAIN WILL CAUSE FLASH FLOODING ALONG THE      
  GUAYANES RIVER AND ADJACENT AREAS IN EASTERN PENUELAS AND          
  WESTERN PONCE.

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 1792 6650 1796 6653 1792 6657 1795 6684
      1800 6684 1810 6682 1814 6678 1811 6674
      1817 6658 1789 6648 1788 6650 1789 6654

$$

ROSA

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

1 follow-up statement

964 
WGCA72 TJSJ 152037
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
437 PM AST FRI APR 15 2011

PRC059-111-113-152043-
/O.CAN.TJSJ.FF.W.0005.000000T0000Z-110415T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GUAYANILLA PR-PONCE PR-PENUELAS PR-
437 PM AST FRI APR 15 2011

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR PENUELAS...PONCE
AND GUAYANILLA MUNICIPALITIES...

RAIN HAS BECOME ISOLATED AND MUCH LIGHTER. THEREFORE...THE FLASH 
FLOOD WARNING HAS BEEN CANCELLED. HOWEVER...RESIDENTS AND 
MOTORISTS ACROSS THESE AREAS SHOULD BE ALERT TO PONDING OF WATER ON 
ROADWAYS AND ALLOW TIME FOR STREAMS...CREEKS AND RIVERS TO RETURN TO 
NORMAL LEVELS. 

LAT...LON 1792 6650 1796 6653 1792 6657 1795 6684
      1800 6684 1810 6682 1814 6678 1811 6674
      1817 6658 1789 6648 1788 6650 1789 6654

$$

FIGUEROA

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
Apr 15, 11:50 AM CDT	Areal Flood Advisory	JSJ	3 hr
Apr 15, 12:21 PM CDT	Areal Flood Advisory	JSJ	2 hr
Apr 15, 12:59 PM CDT	Flash Flood Warning	JSJ	20 min
Apr 15, 1:06 PM CDT	Areal Flood Advisory	JSJ	2 hr
Apr 15, 1:32 PM CDT	Areal Flood Advisory	JSJ	110 min

Nearby

Flash Flood Warnings in Puerto Rico, 2011 Every 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.