Alert archive / Puerto Rico / Flash Flood Warnings in 2015

Flash Flood Warning 10, NWS JSJ

October 25, 2015

NWS JSJ issued this flash flood warning at Oct 25, 2015, 1:39 PM CDT. It was in force for 3 hr. 3 reports 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: Oct 25, 2015, 1:39 PM CDT (18:39 UTC)
Expired: Oct 25, 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), 14 km from the middle of the area, began a volume at 18:41 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
Oct 25, 2:45 PM CDT	FLASH FLOOD	San Lorenzo, PR	SEVERAL HOMES WERE FLOODED IN SOME AREAS OF URB VISTA SAN LORENZO...URB SAN LORENZO VALLEY...BARRIO JAGUAL AND BARRIO QUEMADO.
Oct 25, 3:20 PM CDT	FLASH FLOOD	Juncos, PR	RIO VALENCIANO WENT OUT OF ITS BANKS AFFECTING PORTIONS OF ROAD 31. IN ADDITION...A MUDSLIDE WAS REPORTED AT BARRIADA MORALES.
Oct 25, 4:00 PM CDT	HEAVY RAIN 5.19	San Lorenzo, PR	USGS RAIN GAGE SLKP4 MEASURED 5.19 INCHES FROM 1400L-1700L.

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.

761 
WGCA52 TJSJ 251839
FFWSJU
PRC077-129-252145-
/O.NEW.TJSJ.FF.W.0010.151025T1839Z-151025T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
239 PM AST SUN OCT 25 2015

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SAN LORENZO MUNICIPALITY IN PUERTO RICO...
  JUNCOS MUNICIPALITY IN PUERTO RICO...

* UNTIL 545 PM AST
    
* AT 238 PM AST...DOPPLER RADAR INDICATED PERSISTENT HEAVY RAINFALL 
  AND FREQUENT LIGHTNING ACROSS THE WARNED AREA IN THE LAST HOUR. UP 
  TO TWO INCHES OF RAIN HAVE ALREADY FALLEN IN MOST OF THE AREA AND 
  CONTINUED TO RAIN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY. 
  MUDSLIDE IN AREAS OF STEEP TERRAIN IS ALSO LIKELY WITH THIS 
  TORRENTIAL RAINFALL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

STAY AWAY OR BE SWEPT AWAY. RIVER BANKS AND CULVERTS CAN BECOME 
UNSTABLE AND UNSAFE.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD 
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 1825 6588 1825 6585 1814 6593 1814 6592
      1809 6593 1809 6598 1808 6601 1810 6602
      1811 6605 1814 6602 1817 6602 1819 6600
      1821 6600 1823 6597 1823 6594 1825 6594
      1827 6592

$$

ER

The office that day

Everything else NWS JSJ issued on the same UTC day.

Issued	Product	Office	Lasted
Oct 24, 7:21 PM CDT	Areal Flood Warning	JSJ	6 hr
Oct 25, 6:45 AM CDT	Flash Flood Watch	JSJ	60 hr
Oct 25, 12:00 PM CDT	Areal Flood Advisory	JSJ	3 hr
Oct 25, 12:20 PM CDT	Areal Flood Advisory	JSJ	3 hr
Oct 25, 12:32 PM CDT	Special Weather Statement	JSJ	58 min
Oct 25, 12:41 PM CDT	Flash Flood Warning	JSJ	3 hr
Oct 25, 12:56 PM CDT	Areal Flood Advisory	JSJ	3 hr
Oct 25, 1:13 PM CDT	Areal Flood Advisory	JSJ	3 hr
Oct 25, 1:48 PM CDT	Areal Flood Advisory	JSJ	3 hr
Oct 25, 2:11 PM CDT	Flash Flood Warning	JSJ	3 hr
Oct 25, 2:33 PM CDT	Areal Flood Advisory	JSJ	6 hr
Oct 25, 2:47 PM CDT	Areal Flood Advisory	JSJ	3 hr
Oct 25, 3:13 PM CDT	Areal Flood Advisory	JSJ	3 hr
Oct 25, 3:52 PM CDT	Areal Flood Warning	JSJ	8 hr
Oct 25, 4:28 PM CDT	Areal Flood Advisory	JSJ	3 hr
Oct 25, 4:35 PM CDT	Special Weather Statement	JSJ	85 min
Oct 25, 5:05 PM CDT	Flash Flood Warning	JSJ	3 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; local storm reports from the same archive; radar from the NEXRAD Level II archive.