Alert archive / Puerto Rico / Flash Flood Warnings in 2023

Flash Flood Warning 2, NWS JSJ

March 15, 2023

NWS JSJ issued this flash flood warning at Mar 15, 2023, 12:43 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: Mar 15, 2023, 12:43 PM CDT (17:43 UTC)
Expired: Mar 15, 2023, 3:45 PM CDT
In force: 3 hr
Issued by: NWS JSJ
Area: Storm-based polygon
Flood severity: None

The radar

The San Juan radar (TJUA), 32 km from the middle of the area, began a volume at 17:43 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
Mar 15, 1:00 PM CDT	FLOOD	2 Nnw Carolina, PR	PARKING LOT REPORTED FLOODED IN THE CORNER OF CARRETERA 190 AND AVE JOSE TONY SANTANA. WATER REACHING THE BOTTOMS OF THE CARS.

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

The text

As transmitted.

468 
WGCA52 TJSJ 151743
FFWSJU
PRC031-139-152045-
/O.NEW.TJSJ.FF.W.0002.230315T1743Z-230315T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Juan PR
143 PM AST Wed Mar 15 2023

The National Weather Service in San Juan has issued a

* Flash Flood Warning for...
  Carolina County in Puerto Rico...
  Trujillo Alto County in Puerto Rico...

* Until 445 PM AST.

* At 143 PM AST, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 3 inches of rain 
  have fallen. Additional rainfall amounts of 1 to 2 inches are 
  possible in the warned area. Flash flooding is ongoing or expected 
  to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 1845 6604 1844 6601 1846 6599 1843 6598
      1843 6593 1840 6592 1839 6593 1838 6591
      1835 6592 1834 6591 1832 6590 1829 6592
      1827 6591 1831 6597 1831 6604 1837 6603
      1838 6600 1840 6599 1844 6604

FLASH FLOOD...RADAR INDICATED

$$

CAM

1 follow-up statement

508 
WGCA72 TJSJ 152037
FFSSJU

Flash Flood Statement
National Weather Service San Juan PR
437 PM AST Wed Mar 15 2023

PRC031-139-152047-
/O.EXP.TJSJ.FF.W.0002.000000T0000Z-230315T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Carolina PR-Trujillo Alto PR-
437 PM AST Wed Mar 15 2023

...FLASH FLOOD WARNING WILL EXPIRE AT 445 PM AST THIS AFTERNOON FOR 
CAROLINA AND TRUJILLO ALTO COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 1845 6604 1844 6601 1846 6599 1843 6598
      1843 6593 1840 6592 1839 6593 1838 6591
      1835 6592 1834 6591 1832 6590 1829 6592
      1827 6591 1831 6597 1831 6604 1837 6603
      1838 6600 1840 6599 1844 6604

$$

MM

The office that day

Everything else NWS JSJ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 15, 11:40 AM CDT	Areal Flood Advisory	JSJ		3 hr
Mar 15, 12:16 PM CDT	Areal Flood Advisory	JSJ		3 hr

Nearby

Flash Flood Warnings in Puerto Rico, 2023 Every flash flood warning in 2023

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.