Alert archive / Puerto Rico / Flash Flood Warnings in 2021

Flash Flood Warning 7, NWS JSJ

June 10, 2021

NWS JSJ issued this flash flood warning at Jun 10, 2021, 9:44 AM CDT. It was in force for 2 hr. 8 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: Jun 10, 2021, 9:44 AM CDT (14:44 UTC)
Expired: Jun 10, 2021, 11:53 AM CDT
In force: 2 hr
Issued by: NWS JSJ
Area: Storm-based polygon
Flood severity: None

The radar

The San Juan radar (TJUA), 37 km from the middle of the area, began a volume at 14:43 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
Jun 10, 9:49 AM CDT	FLASH FLOOD	Canovanas, PR	ENTRANCE TO EL PILAR CEMETARY FLOODED.
Jun 10, 9:50 AM CDT	FLASH FLOOD	Canovanas, PR	FLOODING REPORTED ALONG THE MARGINAL OF ROAD PR-3 ACROSS FROM EL PILAR CEMENTARY. PERSON WAS TRAPPED INSIDE VEHICLE.
Jun 10, 10:00 AM CDT	FLASH FLOOD	Rio Grande, PR	FLOODING REPORTED ALONG CALLE ZORZAL. WATER ENTERED A RESIDENCE CAUSING SOME DAMAGES.
Jun 10, 10:00 AM CDT	FLASH FLOOD	Rio Grande, PR	FLOODING REPORTED ALONG ROAD PR-191 KM 0.3 IN SECTOR LA VEGA. WATER ENTERED A RESIDENCE CAUSING SOME DAMAGES.
Jun 10, 10:00 AM CDT	FLASH FLOOD	Rio Grande, PR	FLOODING REPORTED ALONG ROAD PR-966 IN BARRIO ZARZAL. SEVERAL HOMES WERE FLOODED WITH SOME PROPERTY DAMAGE REPORTED.
Jun 10, 10:00 AM CDT	FLASH FLOOD	Rio Grande, PR	FLOODING REPORTED ALONG ROAD PR-967 IN BARRIO LAS TRES T. SEVERAL HOMES WERE FLOODED WITH SOME DAMAGES.
Jun 10, 10:00 AM CDT	FLASH FLOOD	Rio Grande, PR	FLOODING REPORTED IN CALLE COROZO. WATER ENTERED A COUPLE OF RESIDENCES CAUSING SOME DAMAGES.
Jun 10, 10:00 AM CDT	FLASH FLOOD	Rio Grande, PR	FLOODING REPORTED IN CALLE HIGUEY. WATER ENTERED A RESIDENCE RESULTING IN SOME DAMAGES.

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

The text

As transmitted.

074 
WGCA52 TJSJ 101444
FFWSJU
PRC029-087-119-101600-
/O.NEW.TJSJ.FF.W.0007.210610T1444Z-210610T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Juan PR
1044 AM AST Thu Jun 10 2021

The National Weather Service in San Juan has issued a

* Flash Flood Warning for...
  Canovanas in Puerto Rico...
  Loiza in Puerto Rico...
  Rio Grande in Puerto Rico...

* Until noon AST.

* At 1044 AM AST, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Up to 1 inch of rain has 
  fallen. Flash flooding is ongoing or expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms and heavy
           rains.

  SOURCE...Radar and Emergency Managers.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Rio Grande, Canovanas, Carolina, Vieques, La Dolores, Campo Rico, 
  San Isidro, Hato Candal, Santa Barbara, Bartolo, Palmer, Benitez 
  and Lomas.

Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be aware of your surroundings and do not drive on flooded roads.

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

&&

LAT...LON 1846 6598 1845 6590 1844 6588 1843 6589
      1843 6584 1841 6580 1839 6581 1841 6577
      1839 6575 1837 6577 1832 6575 1828 6577
      1830 6579 1825 6587 1827 6592 1827 6591
      1832 6590 1835 6592 1841 6592 1843 6593

FLASH FLOOD...RADAR INDICATED

$$

RAM

2 follow-up statements

817 
WGCA52 TJSJ 101554
FFWSJU
PRC029-087-119-101700-
/O.EXT.TJSJ.FF.W.0007.000000T0000Z-210610T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Juan PR
1154 AM AST Thu Jun 10 2021

The National Weather Service in San Juan has extended the

* Flash Flood Warning for...
  Canovanas in Puerto Rico...
  Loiza in Puerto Rico...
  Rio Grande in Puerto Rico...

* Until 100 PM AST.

* At 1154 AM AST, emergency management reported urban flooding 
  across Canovanas. Up to 3 inches of rain have fallen. Flash 
  flooding is already occurring.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Emergency management reported.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Rio Grande, Canovanas, Carolina, Vieques, La Dolores, Campo Rico, 
  San Isidro, Hato Candal, Santa Barbara, Bartolo, Palmer, Benitez 
  and Lomas.

Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be aware of your surroundings and do not drive on flooded roads.

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

&&

LAT...LON 1846 6598 1845 6590 1844 6588 1843 6589
      1843 6584 1841 6580 1839 6581 1841 6577
      1839 6575 1837 6577 1832 6575 1828 6577
      1830 6579 1825 6587 1827 6592 1827 6591
      1832 6590 1835 6592 1841 6592 1843 6593

FLASH FLOOD...OBSERVED

$$

GL

244 
WGCA72 TJSJ 101653
FFSSJU

Flash Flood Statement
National Weather Service San Juan PR
1253 PM AST Thu Jun 10 2021

PRC029-087-119-101703-
/O.CAN.TJSJ.FF.W.0007.000000T0000Z-210610T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Canovanas PR-Loiza PR-Rio Grande PR-
1253 PM AST Thu Jun 10 2021

...FLASH FLOOD WARNING FOR CANOVANAS, LOIZA AND RIO GRANDE HAS BEEN 
REPLACED WITH A FLOOD ADVISORY...

LAT...LON 1846 6598 1845 6590 1844 6588 1843 6589
      1843 6584 1841 6580 1839 6581 1841 6577
      1839 6575 1837 6577 1832 6575 1828 6577
      1830 6579 1825 6587 1827 6592 1827 6591
      1832 6590 1835 6592 1841 6592 1843 6593

$$

OMS

The office that day

Everything else NWS JSJ issued on the same UTC day.

Issued	Product	Office	Lasted
Jun 10, 8:38 AM CDT	Areal Flood Advisory	JSJ	39 min
Jun 10, 9:05 AM CDT	Areal Flood Advisory	JSJ	39 min
Jun 10, 9:17 AM CDT	Flash Flood Warning	JSJ	3 hr
Jun 10, 10:39 AM CDT	Areal Flood Advisory	JSJ	89 min
Jun 10, 10:55 AM CDT	Areal Flood Advisory	JSJ	73 min
Jun 10, 11:20 AM CDT	Flash Flood Warning Considerable damage threat	JSJ	2 hr
Jun 10, 11:26 AM CDT	Special Marine Warning	JSJ	94 min
Jun 10, 11:49 AM CDT	Areal Flood Advisory	JSJ	3 hr
Jun 10, 11:53 AM CDT	Areal Flood Advisory	JSJ	97 min
Jun 10, 12:17 PM CDT	Areal Flood Advisory	JSJ	3 hr
Jun 10, 1:22 PM CDT	Areal Flood Advisory	JSJ	2 hr
Jun 10, 1:23 PM CDT	Flash Flood Warning	JSJ	2 hr

Nearby

Flash Flood Warnings in Puerto Rico, 2021 Every flash flood warning in 2021

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.