Alert archive / Puerto Rico / Flash Flood Warnings in 2011
Flash Flood Warning 160, NWS JSJ
NWS JSJ issued this flash flood warning at Dec 10, 2011, 1:59 AM CST. It was in force for 8 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
- Dec 10, 2011, 1:59 AM CST (07:59 UTC)
- Expired
- Dec 10, 2011, 9:45 AM CST
- In force
- 8 hr
- Issued by
- NWS JSJ
- Area
- Storm-based polygon
- Flood severity
- None
The radar
The San Juan radar (TJUA), 40 km from the middle of the area, began a volume at 08:01 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.
009
WGCA52 TJSJ 100759
FFWSJU
PRC119-101045-
/O.NEW.TJSJ.FF.W.0160.111210T0759Z-111210T1045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
359 AM AST SAT DEC 10 2011
THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A
* FLASH FLOOD WARNING FOR...
THE FOLLOWING MUNICIPALITY
IN PUERTO RICO
RIO GRANDE
* UNTIL 645 AM AST
* AT 348 AM AST...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED THAT THE
ESPIRITU SANTO RIVER IS OUT OF ITS BANKS. ADDITIONAL SHOWERS WITH
HEAVY RAINFALL WILL AFFECT THIS MUNICIPALITY IN THE NEXT FEW HOURS
AND THIS COULD AGGRAVATE THE FLOODING SITUATION.
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.
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 1841 6577 1830 6578 1828 6585 1836 6585
1842 6580
$$
ER
ADDITIONAL INFORMATION CAN BE FOUND AT /USE LOWER CASE LETTERS/:
HTTP://WWW.WEATHER.GOV/SANJUAN3 follow-up statements
000
WGCA52 TJSJ 101038
FFWSJU
PRC119-101315-
/O.EXT.TJSJ.FF.W.0160.000000T0000Z-111210T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
638 AM AST SAT DEC 10 2011
THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS EXTENDED THE
* FLASH FLOOD WARNING FOR...
THE FOLLOWING MUNICIPALITY
IN PUERTO RICO
RIO GRANDE
* UNTIL 915 AM AST
* AT 631 AM AST..WEATHER DOPPLER RADAR INDICATED MODERATE SHOWER
ACTIVITY ACROSS PARTS OF THE WARNED AREA. ADDITIONAL SHOWERS AND
THUNDERSTORMS...SOME OF THEM WITH EMBEDDED HEAVY DOWNPOURS...ARE
EXPECTED THROUGH THE MORNING HOURS. THIS RAINFALL IN ADDITION TO THE
RAINFALL THAT HAS ALREADY OCCURRED...WILL RESULT IN RAPID RISES ON
SMALL STREAMS AND RIVERS...INCLUDING RIO ESPIRITU SANTO. RESIDENTS
IN FLOOD PRONE AREAS SHOULD MOVE TO HIGHER GROUND IMMEDIATELY AND
NEVER TRY TO CROSS A FLOODED ROADWAY.
LAT...LON 1841 6577 1830 6578 1828 6585 1836 6585
1842 6580
$$
OMS
ADDITIONAL INFORMATION CAN BE FOUND AT /USE LOWER CASE LETTERS/:
HTTP://WWW.WEATHER.GOV/SANJUAN459
WGCA52 TJSJ 101317
FFWSJU
PRC119-101545-
/O.EXT.TJSJ.FF.W.0160.000000T0000Z-111210T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
917 AM AST SAT DEC 10 2011
THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS EXTENDED THE
* FLASH FLOOD WARNING FOR...
THE FOLLOWING MUNICIPALITY
IN PUERTO RICO
RIO GRANDE
* UNTIL 1145 AM AST
* AT 913 AM AST...THE NATIONAL WEATHER SERVICE DOPPLER WEATHER RADAR
AS WELL AS THE LOCAL PUBLIC INDICATED AND REPORTED AREAS OF MODERATE
TO HEAVY RAINS IN AND AROUND THE WARNED AREA. IN ADDITION...RUNOFF
FROM FROM RECENT HEAVY RAINFALL CONTINUED TO AFFECT THE RIO ESPIRITU
SANTO AND ITS TRIBUTARIES.AT LEAST UNTIL 11:45 AM AST ADDITIONAL
HEAVY RAINFALL WILL BE POSSIBLE ACROSS THE WARNED AREA. MUDSLIDES
WILL ALSO REMAIN POSSIBLE IN AREAS OF STEEP TERRAIN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.
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.
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 1841 6577 1830 6578 1828 6585 1836 6585
1842 6580
$$
RAM
ADDITIONAL INFORMATION CAN BE FOUND AT /USE LOWER CASE LETTERS/:
HTTP://WWW.WEATHER.GOV/SANJUAN192
WGCA72 TJSJ 101545
FFSSJU
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
1145 AM AST SAT DEC 10 2011
PRC119-101551-
/O.EXP.TJSJ.FF.W.0160.000000T0000Z-111210T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RIO GRANDE PR-
1145 AM AST SAT DEC 10 2011
...THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE AT 1145 AM AST
FOR RIO GRANDE MUNICIPALITY...
DOPPLER RADAR INDICATED THAT THE HEAVY RAIN WHICH AFFECTED THIS AREA
HAD DISSIPATED OR CONTINUED TO QUICKLY MOVE AWAY. NO SIGNIFICANT
ADDITIONAL RAINFALL IS EXPECTED ACROSS THESE AREAS AT THIS TIME.
THEREFORE THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE AT 11:45
AM AST. HOWEVER...RUNOFF FROM RECENT HEAVY RAINFALL MAY STILL AFFECT
SMALL RIVERS AND STREAM...AND ALSO CAUSE FLOODING IN POOR DRAINAGE
AND URBAN AREAS. AS A RESULT...RESIDENTS AND MOTORISTS ACROSS THESE
AREAS SHOULD BE ALERT AND ALLOW TIME FOR STREAMS... CREEKS AND
RIVERS TO RETURN TO NORMAL LEVELS.
LAT...LON 1841 6577 1830 6578 1828 6585 1836 6585
1842 6580
$$
RAM
ADDITIONAL INFORMATION CAN BE FOUND AT /USE LOWER CASE LETTERS/:
HTTP://WWW.WEATHER.GOV/SANJUANThe office that day
Everything else NWS JSJ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 9, 7:51 PM CST | Areal Flood Advisory | JSJ | 114 min | |
| Dec 9, 8:49 PM CST | Special Marine Warning | JSJ | 56 min | |
| Dec 9, 9:58 PM CST | Areal Flood Advisory | JSJ | 6 hr | |
| Dec 9, 10:14 PM CST | Areal Flood Advisory | JSJ | 4 hr | |
| Dec 9, 11:01 PM CST | Flash Flood Warning | JSJ | 5 hr | |
| Dec 9, 11:21 PM CST | Areal Flood Advisory | JSJ | 7 hr | |
| Dec 9, 11:41 PM CST | Flash Flood Warning | JSJ | 8 hr | |
| Dec 10, 2:03 AM CST | Areal Flood Advisory | JSJ | 4 hr | |
| Dec 10, 2:06 AM CST | Flash Flood Warning | JSJ | 6 hr | |
| Dec 10, 2:16 AM CST | Flash Flood Warning | JSJ | 5 hr | |
| Dec 10, 2:23 AM CST | Flash Flood Warning | JSJ | 5 hr | |
| Dec 10, 4:26 AM CST | Flash Flood Warning | JSJ | 3 hr | |
| Dec 10, 6:03 AM CST | Areal Flood Advisory | JSJ | 117 min | |
| Dec 10, 6:25 AM CST | Areal Flood Advisory | JSJ | 2 hr | |
| Dec 10, 7:38 AM CST | Areal Flood Warning | JSJ | 10 hr | |
| Dec 10, 7:57 AM CST | Areal Flood Warning | JSJ | 4 hr | |
| Dec 10, 8:00 AM CST | Areal Flood Advisory | JSJ | 2 hr | |
| Dec 10, 8:24 AM CST | Areal Flood Advisory | JSJ | 111 min | |
| Dec 10, 9:39 AM CST | Flash Flood Warning | JSJ | 115 min | |
| Dec 10, 10:04 AM CST | Areal Flood Advisory | JSJ | 116 min | |
| Dec 10, 10:14 AM CST | Areal Flood Advisory | JSJ | 2 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.