Alert archive / Puerto Rico / Flash Flood Warnings in 2012
Flash Flood Warning 24, NWS JSJ
NWS JSJ issued this flash flood warning at May 18, 2012, 2:29 PM CDT. It was in force for 3 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 18, 2012, 2:29 PM CDT (19:29 UTC)
- Expired
- May 18, 2012, 5:19 PM CDT
- In force
- 3 hr
- Issued by
- NWS JSJ
- Area
- Storm-based polygon
- Flood severity
- None
The radar
The San Juan radar (TJUA), 30 km from the middle of the area, began a volume at 19:30 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 18, 3:00 PM CDT | FLASH FLOOD | Guaynabo, PR | 35 RESIDENTS OF CALIFORNIA STREET IN THE MAYORCA URBANIZATION WERE REMOVED FROM THEIR HOMES AND TAKEN TO AN ELDERLY CENTER FOR SHELTER. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The text
As transmitted, in the capitals the NWS used until 2016.
440
WGCA52 TJSJ 181929
FFWSJU
PRC061-127-182230-
/O.NEW.TJSJ.FF.W.0024.120518T1929Z-120518T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
329 PM AST FRI MAY 18 2012
THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A
* FLASH FLOOD WARNING FOR...
THE FOLLOWING MUNICIPALITIES
IN PUERTO RICO
GUAYNABO
SAN JUAN
* UNTIL 630 PM AST
* AT 315 PM AST...DOPPLER WEATHER RADAR DETECTED VERY HEAVY RAINFALL
ACROSS GUAYNABO AND SAN JUAN...WHICH IS LEADING TO RAPID RISES IN
THE RIO PIEDRAS AND ITS TRIBUTARIES. AS A RESULT...EXPECT FLASH
FLOODING NEAR THE RIO PIEDRAS AND ITS TRIBUTARIES IN SAN JUAN
THROUGH AT LEAST 630 PM AST.
DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.
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. WHEN ENCOUNTERING FLOODED ROADS MAKE THE SMART
CHOICE...TURN AROUND...DONT DROWN. MOVE TO HIGHER GROUND.
&&
LAT...LON 1843 6610 1845 6608 1841 6604 1834 6604
1832 6604 1832 6611 1836 6612
$$
ER/BCS
ADDITIONAL INFORMATION CAN BE FOUND AT /USE LOWER CASE LETTERS/:
HTTP://WWW.WEATHER.GOV/SANJUAN1 follow-up statement
830
WGCA72 TJSJ 182219
FFSSJU
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
619 PM AST FRI MAY 18 2012
PRC061-127-182226-
/O.CAN.TJSJ.FF.W.0024.000000T0000Z-120518T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GUAYNABO PR-SAN JUAN PR-
619 PM AST FRI MAY 18 2012
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SAN JUAN AND
GUAYNABO MUNICIPALITIES...
THE SHOWERS THAT AFFECTED THIS AREA HAVE WEAKENED AND MOVED AWAY. NO
ADDITIONAL SIGNIFICANT SHOWERS ARE EXPECTED IN THE NEXT FEW HOURS.
THEREFORE...THE FLASH FLOOD WARNING FOR SAN JUAN AND GUAYNABO WAS
ALLOWED TO EXPIRE AT 630 PM AST.
LAT...LON 1843 6610 1845 6608 1841 6604 1834 6604
1832 6604 1832 6611 1836 6612
$$
FIGUEROA
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 |
|---|---|---|---|---|
| May 17, 7:46 PM CDT | Flash Flood Warning | JSJ | 106 min | |
| May 17, 9:15 PM CDT | Areal Flood Advisory | JSJ | 2 hr | |
| May 17, 9:26 PM CDT | Areal Flood Advisory | JSJ | 2 hr | |
| May 18, 12:13 PM CDT | Areal Flood Advisory | JSJ | 7 hr | |
| May 18, 12:24 PM CDT | Areal Flood Advisory | JSJ | 4 hr | |
| May 18, 2:00 PM CDT | Areal Flood Advisory | JSJ | 5 hr | |
| May 18, 2:57 PM CDT | Flash Flood Warning | JSJ | 3 hr |
Nearby
Flash Flood Warnings in Puerto Rico, 2012Every flash flood warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; radar from the NEXRAD Level II archive.