Alert archive / Puerto Rico / Flash Flood Warnings in 2017

Flash Flood Warning 101, NWS JSJ

September 21, 2017

NWS JSJ issued this flash flood warning at Sep 21, 2017, 2:25 AM CDT. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 21, 2017, 2:25 AM CDT (07:25 UTC)
Expired
Sep 21, 2017, 7:30 AM CDT
In force
5 hr
Issued by
NWS JSJ
Area
Storm-based polygon
Flood severity
None

The text

As transmitted.

649 
WGCA52 TJSJ 210725
FFWSJU
PRC009-021-033-041-045-047-051-105-135-137-143-211230-
/O.NEW.TJSJ.FF.W.0101.170921T0725Z-170921T1230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Juan PR
Issued by National Weather Service Miami FL
325 AM AST THU SEP 21 2017

The National Weather Service in San Juan has issued a

* Flash Flood Warning for...
  Comerio Municipality in Puerto Rico...
  Naranjito Municipality in Puerto Rico...
  East central Vega Alta Municipality in Puerto Rico...
  Dorado Municipality in Puerto Rico...
  Northwestern Bayamon Municipality in Puerto Rico...
  Northeastern Corozal Municipality in Puerto Rico...
  West central Cidra Municipality in Puerto Rico...
  Toa Baja Municipality in Puerto Rico...
  West central Catano Municipality in Puerto Rico...
  Northern Aibonito Municipality in Puerto Rico...
  Toa Alta Municipality in Puerto Rico...

* Until 830 AM AST

* At 324 AM AST, satellite estimates indicated heavy rain across the
  warned area. Flash flooding is already occurring.

* Some locations that will experience flooding include...
  Toa Alta, Sabana Seca, Toa Baja, Comerio, Naranjito, Dorado, Vega
  Alta, Campanilla, San Antonio, Ingenio, Rio Lajas, San Jose, H.
  Rivera Colon, Galateo, Pajaros, Candelaria, Levittown, Candelaria
  Arenas and Mucarabones.

Excessive rainfall over the warned area will cause mud slides near
steep terrain. The mud slide can consist of rock, mud, vegetation and
other loose materials.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 1849 6618 1847 6616 1848 6614 1842 6617
      1842 6620 1830 6621 1821 6618 1819 6621
      1817 6621 1817 6627 1818 6625 1819 6624
      1819 6626 1824 6627 1824 6628 1833 6628
      1838 6631 1847 6631 1850 6634

$$

JDW

The office that day

Everything else NWS JSJ issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 20, 7:05 PM CDTFlash Flood WarningJSJ4 hr
Sep 20, 7:26 PM CDTFlash Flood WarningJSJ4 hr
Sep 20, 7:30 PM CDTFlash Flood WarningJSJ4 hr
Sep 20, 7:32 PM CDTFlash Flood WarningJSJ4 hr
Sep 20, 7:59 PM CDTFlash Flood WarningJSJ4 hr
Sep 20, 9:25 PM CDTFlash Flood WarningJSJ5 hr
Sep 20, 9:29 PM CDTFlash Flood WarningJSJ5 hr
Sep 20, 9:42 PM CDTFlash Flood WarningJSJ5 hr
Sep 20, 10:40 PM CDTFlash Flood Warning EmergencyJSJ3 hr
Sep 20, 10:43 PM CDTFlash Flood WarningJSJ9 hr
Sep 20, 10:45 PM CDTFlash Flood WarningJSJ5 hr
Sep 20, 10:52 PM CDTFlash Flood WarningJSJ5 hr
Sep 20, 10:56 PM CDTFlash Flood WarningJSJ5 hr
Sep 20, 10:59 PM CDTSmall Craft AdvisoryJSJ52 hr
Sep 20, 11:03 PM CDTFlash Flood WarningJSJ5 hr
Sep 20, 11:20 PM CDTFlash Flood WarningJSJ5 hr
Sep 21, 1:39 AM CDTFlash Flood WarningJSJ7 hr
Sep 21, 2:20 AM CDTFlash Flood WarningJSJ5 hr
Sep 21, 2:27 AM CDTFlash Flood WarningJSJ5 hr
Sep 21, 3:35 AM CDTFlash Flood WarningJSJ3 hr
Sep 21, 3:45 AM CDTFlash Flood WarningJSJ4 hr
Sep 21, 3:50 AM CDTFlash Flood WarningJSJ4 hr
Sep 21, 3:53 AM CDTFlash Flood WarningJSJ3 hr
Sep 21, 4:09 AM CDTFlash Flood WarningJSJ3 hr
Sep 21, 6:54 AM CDTFlash Flood WarningJSJ7 hr
Sep 21, 7:00 AM CDTFlash Flood Warning EmergencyJSJ7 hr
Sep 21, 7:58 AM CDTAreal Flood WarningJSJ6 hr
Sep 21, 8:30 AM CDTSpecial Marine WarningJSJ2 hr
Sep 21, 10:20 AM CDTTropical Storm WarningJSJ5 hr
Sep 21, 10:27 AM CDTSpecial Marine WarningJSJ63 min
Sep 21, 11:30 AM CDTSpecial Marine WarningJSJ90 min
Sep 21, 12:55 PM CDTSpecial Marine WarningJSJ2 hr
Sep 21, 1:55 PM CDTFlash Flood WarningJSJ3 hr
Sep 21, 1:57 PM CDTAreal Flood WarningJSJ6 hr
Sep 21, 2:01 PM CDTAreal Flood WarningJSJ6 hr
Sep 21, 4:57 PM CDTAreal Flood WarningJSJ3 hr

Nearby

Flash Flood Warnings in Puerto Rico, 2017Every flash flood warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.