Alert archive / U.S. Virgin Islands / Flash Flood Warnings in 2011

Flash Flood Warning 72, NWS JSJ

July 3, 2011

NWS JSJ issued this flash flood warning at Jul 3, 2011, 4:00 PM CDT. It was in force for 7 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: Jul 3, 2011, 4:00 PM CDT (21:00 UTC)
Expired: Jul 3, 2011, 11:00 PM CDT
In force: 7 hr
Issued by: NWS JSJ
Area: Storm-based polygon
Flood severity: None

The radar

The San Juan radar (TJUA), 147 km from the middle of the area, began a volume at 21:02 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.

582 
WGCA52 TJSJ 032100
FFWSJU
VIC010-040000-
/O.NEW.TJSJ.FF.W.0072.110703T2100Z-110704T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
500 PM AST SUN JUL 3 2011

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING ISLAND

  IN THE U.S. VIRGIN ISLANDS
     SAINT CROIX

* UNTIL 800 PM AST

* AT 452 PM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
HEAVY SHOWERS AND THUNDERSTORMS MOVING OVER ST CROIX. THESE 
SHOWERS AND THUNDERSTORMS WILL PRODUCE LOCALLY 
HEAVY RAINFALL AND FLASH FLOODING. 

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 GUTS 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.

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.

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 1768 6459 1764 6473 1764 6490 1768 6494
      1781 6489 1781 6482 1776 6455

$$

07

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

2 follow-up statements

480 
WGCA52 TJSJ 032358
FFWSJU
VIC010-040400-
/O.EXT.TJSJ.FF.W.0072.000000T0000Z-110704T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
758 PM AST SUN JUL 3 2011

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING ISLAND

  IN THE U.S. VIRGIN ISLANDS
     SAINT CROIX

* UNTIL MIDNIGHT AST

* AT 746 PM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUES 
TO INDICATE MODERATE TO VERY HEAVY SHOWER ACTIVITY ONCE AGAIN MOVING 
TOWARDS THE WARNED AREA. THIS RAINFALL...IN ADDITION TO THE RAINFALL 
THAT HAS ALREADY OCCURRED...WILL CONTINUE TO RESULT IN FLOODING OF 
GUTS AND ROADWAYS ACROSS SAINT CROIX. RESIDENTS IN FLOOD PRONE AREAS 
SHOULD MOVE TO HIGHER GROUND IMMEDIATELY AND NEVER TRY TO CROSS A 
FLOODED ROADWAY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

IN MOUNTAINOUS OR HILLY TERRAIN...THERE ARE HUNDREDS OF LOW WATER
CROSSINGS WHICH ARE POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT
ATTEMPT TO TRAVEL ACROSS FLOODED ROADS. FIND ALTERNATE ROUTES. IT
ONLY TAKES A FEW INCHES OF SWIFTLY FLOWING WATER TO CARRY VEHICLES
AWAY.

&&

LAT...LON 1768 6459 1764 6473 1764 6490 1768 6494
      1781 6489 1781 6482 1776 6455

$$

07

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

025 
WGCA72 TJSJ 040359
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
1159 PM AST SUN JUL 3 2011

VIC010-040402-
/O.EXP.TJSJ.FF.W.0072.000000T0000Z-110704T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAINT CROIX VI-
1159 PM AST SUN JUL 3 2011

...THE FLASH FLOOD WARNING WILL EXPIRE AT MIDNIGHT AST FOR SAINT
CROIX ISLAND...

DOPPLER RADAR INDICATED THAT THE HEAVY RAIN WHICH AFFECTED THIS AREA 
HAD DISSIPATED OR MOVED AWAY. NO SIGNIFICANT ADDITIONAL HEAVY 
RAINFALL IS EXPECTED ACROSS THESE AREAS DURING THE NEXT COUPLE OF 
HOURS. HOWEVER...LIGHT SHOWERS COULD STILL OCCUR ACROSS PARTS OF THE 
ISLANDS DURING THE OVERNIGHT HOURS.

LAT...LON 1768 6459 1764 6473 1764 6490 1768 6494
      1781 6489 1781 6482 1776 6455

$$

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	Counties	Lasted
Jul 3, 8:26 AM CDT	Flash Flood Watch	JSJ		19 hr
Jul 3, 8:41 AM CDT	Areal Flood Advisory	JSJ		5 hr

Nearby

Flash Flood Warnings in U.S. Virgin Islands, 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.