Alert archive / Puerto Rico / Flash Flood Warnings in 2016

Flash Flood Warning 22, NWS JSJ

October 18, 2016

NWS JSJ issued this flash flood warning at Oct 18, 2016, 12:14 PM CDT. It was in force for 4 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: Oct 18, 2016, 12:14 PM CDT (17:14 UTC)
Expired: Oct 18, 2016, 4:00 PM CDT
In force: 4 hr
Issued by: NWS JSJ
Area: Storm-based polygon
Flood severity: None

The radar

The San Juan radar (TJUA), 113 km from the middle of the area, began a volume at 17:15 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 18, 12:29 PM CDT	FLASH FLOOD	Cabo Rojo, PR	FLOODED RESIDENCE IN REPARTO SAMAN, AT THE END OF STREET 4 IN CABO ROJO.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The text

As transmitted.

824 
WGCA52 TJSJ 181714
FFWSJU
PRC023-067-079-093-097-125-182100-
/O.NEW.TJSJ.FF.W.0022.161018T1714Z-161018T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
114 PM AST TUE OCT 18 2016

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SAN GERMAN MUNICIPALITY IN PUERTO RICO...
  LAJAS MUNICIPALITY IN PUERTO RICO...
  MARICAO MUNICIPALITY IN PUERTO RICO...
  CABO ROJO MUNICIPALITY IN PUERTO RICO...
  HORMIGUEROS MUNICIPALITY IN PUERTO RICO...
  MAYAGUEZ MUNICIPALITY IN PUERTO RICO...

* UNTIL 500 PM AST
    
* AT 102 PM AST...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED
  A THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. UP TO
  FOUR INCHES OF RAIN HAVE ALREADY FALLEN. FLASH FLOODING IS
  EXPECTED TO BEGIN SHORTLY. EXCESSIVE RAINFALL OVER THE WARNED AREA
  WILL CAUSE MUD SLIDES NEAR STEEP TERRAIN. MUD SLIDES CAN CONSIST
  OF ROCK...MUD...VEGETATION AND OTHER LOOSE MATERIALS.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CABO ROJO...LAJAS...HORMIGUEROS...SAN GERMAN...MONTE GRANDE...
  PUERTO REAL...PALMAREJO...BETANCES...LA PARGUERA...
  POLE OJEA AND SABANA ENEAS.

ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES ARE POSSIBLE IN THE
WARNED AREA.

FLOOD WATERS ARE MOVING DOWN THE HORMIGUEROS RIVER TO THE OCEAN THE
FLOOD CREST IS EXPECTED TO REACH HORMIGUEROS BY 4 PM AST IN EXCESS
OF 22 FEET WHERE FLOOD STAGE IS 20 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT ENTER OR CROSS FLOWING WATER OR WATER OF UNKNOWN DEPTH. 

&&

LAT...LON 1800 6721 1801 6717 1803 6718 1803 6720
      1806 6720 1807 6718 1808 6720 1811 6718
      1813 6719 1815 6718 1817 6718 1820 6715
      1818 6701 1797 6699 1797 6705 1798 6706
      1797 6708 1796 6721

$$

SNELL

1 follow-up statement

781 
WGCA72 TJSJ 182059
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
459 PM AST TUE OCT 18 2016

PRC023-067-079-093-097-125-182106-
/O.EXP.TJSJ.FF.W.0022.000000T0000Z-161018T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN GERMAN PR-LAJAS PR-MARICAO PR-CABO ROJO PR-HORMIGUEROS PR-
MAYAGUEZ PR-
459 PM AST TUE OCT 18 2016

...THE FLASH FLOOD WARNING FOR SAN GERMAN...LAJAS...MARICAO...CABO
ROJO...HORMIGUEROS AND MAYAGUEZ MUNICIPALITIES WILL EXPIRE AT 500 PM
AST...

HOWEVER...SOME RIVERS ACROSS THE AREA ARE RUNNING HIGH AND LIGHT TO
MODERATE SHOWERS CONTINUE ACROSS THE AREA. PLEASE CONTINUE TO HEED
ANY ROAD CLOSURES.

LAT...LON 1800 6721 1801 6717 1803 6718 1803 6720
      1806 6720 1807 6718 1808 6720 1811 6718
      1813 6719 1815 6718 1817 6718 1820 6715
      1818 6701 1797 6699 1797 6705 1798 6706
      1797 6708 1796 6721

$$

FIGUEROA

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
Oct 17, 8:12 PM CDT	Coastal Flood Advisory	JSJ	32 hr
Oct 18, 3:27 AM CDT	Special Marine Warning	JSJ	93 min
Oct 18, 3:57 AM CDT	Special Weather Statement	JSJ	78 min
Oct 18, 5:07 AM CDT	Special Weather Statement	JSJ	83 min
Oct 18, 5:26 AM CDT	Areal Flood Advisory	JSJ	2 hr
Oct 18, 5:42 AM CDT	Areal Flood Advisory	JSJ	3 hr
Oct 18, 6:28 AM CDT	Special Weather Statement	JSJ	62 min
Oct 18, 7:01 AM CDT	Special Weather Statement	JSJ	74 min
Oct 18, 7:14 AM CDT	Areal Flood Advisory	JSJ	5 hr
Oct 18, 8:45 AM CDT	Areal Flood Advisory	JSJ	2 hr
Oct 18, 9:30 AM CDT	Areal Flood Advisory	JSJ	2 hr
Oct 18, 9:50 AM CDT	Areal Flood Advisory	JSJ	2 hr
Oct 18, 10:47 AM CDT	Areal Flood Advisory	JSJ	3 hr
Oct 18, 11:16 AM CDT	Special Weather Statement	JSJ	59 min
Oct 18, 12:33 PM CDT	Areal Flood Advisory	JSJ	3 hr
Oct 18, 1:17 PM CDT	Areal Flood Advisory	JSJ	3 hr
Oct 18, 2:53 PM CDT	Areal Flood Advisory	JSJ	3 hr
Oct 18, 4:07 PM CDT	Areal Flood Warning	JSJ	9 hr
Oct 18, 4:18 PM CDT	Areal Flood Warning	JSJ	3 hr

Nearby

Flash Flood Warnings in Puerto Rico, 2016 Every flash flood warning in 2016

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.