Alert archive / Puerto Rico / Flash Flood Warnings in 2015

Flash Flood Warning 4, NWS JSJ

September 22, 2015

NWS JSJ issued this flash flood warning at Sep 22, 2015, 1:49 PM CDT. It was in force for 3 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 22, 2015, 1:49 PM CDT (18:49 UTC)
Expired: Sep 22, 2015, 4:45 PM CDT
In force: 3 hr
Issued by: NWS JSJ
Area: Storm-based polygon
Flood severity: None

The radar

The San Juan radar (TJUA), 81 km from the middle of the area, began a volume at 18:47 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.

527 
WGCA52 TJSJ 221849
FFWSJU
PRC001-065-081-141-222145-
/O.NEW.TJSJ.FF.W.0004.150922T1849Z-150922T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
249 PM AST TUE SEP 22 2015

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ADJUNTAS MUNICIPALITY IN PUERTO RICO...
  UTUADO MUNICIPALITY IN PUERTO RICO...
  LARES MUNICIPALITY IN PUERTO RICO...
  HATILLO MUNICIPALITY IN PUERTO RICO...

* UNTIL 545 PM AST
    
* AT 240 PM AST...DOPPLER WEATHER RADAR INDICATED SHOWERS AND 
  THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. PREMA   
  OFFICIAL FROM SAN SEBASTIAN AND LARES INDICATED THAT GUAJATACA 
  RIVER WAS CAUSING FLOODING...USGS GAGE INDICATES THAT THE RIVER  
  IS OVER FLOOD STAGE DUE TO RUNOFF FROM RAINFALL THIS AFTERNOON. 
         
  FOR THOSE REASONS A FLASH FLOOD WARNING WAS ISSUED FOR THESE   

* FLASH FLOODING WILL REMAIN OVER MAINLY RURAL AREAS OF ADJUNTAS...
  UTUADO...LARES AND HATILLO MUNICIPALITIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL 
CREEKS AND STREAMS...AS WELL AS FARM AND COUNTRY ROADS. DO NOT 
ATTEMPT TO TRAVEL ACROSS FLOODED ROADS. FIND ALTERNATE ROUTES.

&&

LAT...LON 1833 6679 1823 6679 1821 6688 1834 6686

$$

FIGUEROA/ASMITH/CASTRO

1 follow-up statement

589 
WGCA72 TJSJ 222153
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
553 PM AST TUE SEP 22 2015

PRC001-065-081-141-222202-
/O.EXP.TJSJ.FF.W.0004.000000T0000Z-150922T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ADJUNTAS PR-UTUADO PR-LARES PR-HATILLO PR-
553 PM AST TUE SEP 22 2015

...THE FLASH FLOOD WARNING FOR ADJUNTAS...UTUADO...LARES AND HATILLO
MUNICIPALITIES HAS EXPIRED...

THE HIGH WATER IS RECEDING...AND IS NO LONGER EXPECTED TO POSE A 
THREAT. HOWEVER DURING THE NEXT HOUR OR SO...RESIDENTS AND MOTORIST 
ACROSS THESE AREAS SHOULD BE ALERT TO PONDING OF WATER ON 
ROADWAYS...AND ALLOW TIME FOR RIVERS AND STREAMS TO RETURN TO NORMAL 
LEVELS.

LAT...LON 1833 6679 1823 6679 1821 6688 1834 6686

$$

ER

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
Sep 22, 11:27 AM CDT	Areal Flood Advisory	JSJ	3 hr
Sep 22, 11:32 AM CDT	Areal Flood Advisory	JSJ	3 hr
Sep 22, 12:11 PM CDT	Areal Flood Advisory	JSJ	3 hr
Sep 22, 12:33 PM CDT	Special Weather Statement	JSJ	87 min
Sep 22, 12:46 PM CDT	Special Weather Statement	JSJ	89 min
Sep 22, 12:47 PM CDT	Areal Flood Advisory	JSJ	118 min
Sep 22, 2:14 PM CDT	Special Weather Statement	JSJ	46 min
Sep 22, 2:43 PM CDT	Areal Flood Advisory	JSJ	92 min
Sep 22, 2:47 PM CDT	Areal Flood Advisory	JSJ	88 min
Sep 22, 3:08 PM CDT	Areal Flood Advisory	JSJ	112 min
Sep 22, 3:51 PM CDT	Areal Flood Warning	JSJ	12 hr

Nearby

Flash Flood Warnings in Puerto Rico, 2015 Every flash flood warning in 2015

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.