Alert archive / Puerto Rico / Flash Flood Warnings in 2017

Flash Flood Warning 99, NWS JSJ

September 21, 2017

NWS JSJ issued this flash flood warning at Sep 21, 2017, 1:39 AM CDT. It was in force for 7 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, 1:39 AM CDT (06:39 UTC)
Expired
Sep 21, 2017, 8:15 AM CDT
In force
7 hr
Issued by
NWS JSJ
Area
Storm-based polygon
Flood severity
None

The text

As transmitted.

119 
WGCA52 TJSJ 210639
FFWSJU
PRC001-003-005-011-013-023-027-065-067-071-081-083-093-097-099-115-
117-121-125-131-141-153-211145-
/O.NEW.TJSJ.FF.W.0099.170921T0639Z-170921T1145Z/
/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
239 AM AST THU SEP 21 2017

The National Weather Service in San Juan has issued a

* Flash Flood Warning for...
  Northwestern Sabana Grande Municipality in Puerto Rico...
  Las Marias Municipality in Puerto Rico...
  Lares Municipality in Puerto Rico...
  San Sebastian Municipality in Puerto Rico...
  West central Arecibo Municipality in Puerto Rico...
  Isabela Municipality in Puerto Rico...
  Western Adjuntas Municipality in Puerto Rico...
  Hormigueros Municipality in Puerto Rico...
  Moca Municipality in Puerto Rico...
  Northwestern Yauco Municipality in Puerto Rico...
  Quebradillas Municipality in Puerto Rico...
  Anasco Municipality in Puerto Rico...
  Northern Cabo Rojo Municipality in Puerto Rico...
  Camuy Municipality in Puerto Rico...
  Maricao Municipality in Puerto Rico...
  Mayaguez Municipality in Puerto Rico...
  Rincon Municipality in Puerto Rico...
  San German Municipality in Puerto Rico...
  Hatillo Municipality in Puerto Rico...
  Northwestern Utuado Municipality in Puerto Rico...
  Aguada Municipality in Puerto Rico...
  Aguadilla Municipality in Puerto Rico...

* Until 745 AM AST

* At 237 AM AST, satellite estimates indicated thunderstorms
  producing heavy rain across the warned area. Flash flooding is
  ongoing and expected to continue.

* Some locations that will experience flooding include...
  Arecibo, Aguadilla, Aguada, Rincon, Moca, Anasco, Camuy,
  Quebradillas, Hormigueros, San Sebastian, Las Marias, Cabo Rojo,
  Isabela, Mayaguez, San German, Lares, Hatillo, Sabana Grande,
  Puerto Real and La Playa.

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 1852 6696 1849 6676 1832 6677 1832 6682
      1823 6682 1821 6684 1817 6683 1814 6686
      1815 6696 1808 6698 1807 6722 1816 6720
      1821 6717 1835 6728 1841 6718 1849 6718
      1852 6712

$$

JDW
1 follow-up statement
450 
WGCA52 TJSJ 210855
FFWSJU
PRC001-003-005-011-013-023-027-065-067-071-081-083-093-097-099-115-
117-121-125-131-141-153-211315-
/O.EXT.TJSJ.FF.W.0099.000000T0000Z-170921T1315Z/
/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
455 AM AST THU SEP 21 2017

The National Weather Service in San Juan has extended the

* Flash Flood Warning for...
  Northwestern Sabana Grande Municipality in Puerto Rico...
  Las Marias Municipality in Puerto Rico...
  Lares Municipality in Puerto Rico...
  San Sebastian Municipality in Puerto Rico...
  West central Arecibo Municipality in Puerto Rico...
  Isabela Municipality in Puerto Rico...
  Western Adjuntas Municipality in Puerto Rico...
  Hormigueros Municipality in Puerto Rico...
  Moca Municipality in Puerto Rico...
  Northwestern Yauco Municipality in Puerto Rico...
  Quebradillas Municipality in Puerto Rico...
  Anasco Municipality in Puerto Rico...
  Northern Cabo Rojo Municipality in Puerto Rico...
  Camuy Municipality in Puerto Rico...
  Maricao Municipality in Puerto Rico...
  Mayaguez Municipality in Puerto Rico...
  Rincon Municipality in Puerto Rico...
  San German Municipality in Puerto Rico...
  Hatillo Municipality in Puerto Rico...
  Northwestern Utuado Municipality in Puerto Rico...
  Aguada Municipality in Puerto Rico...
  Aguadilla Municipality in Puerto Rico...

* Until 915 AM AST

* At 454 AM AST, satellite estimates indicated thunderstorms
  producing heavy rain across the warned area. Flash flooding is
  already occurring.

* Some locations that will experience flooding include...
  Arecibo, Aguadilla, Aguada, Rincon, Moca, Anasco, Camuy,
  Quebradillas, Hormigueros, San Sebastian, Las Marias, Cabo Rojo,
  Isabela, Mayaguez, San German, Lares, Hatillo, Sabana Grande,
  Puerto Real and La Playa.

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 1852 6696 1849 6676 1832 6677 1832 6682
      1823 6682 1821 6684 1817 6683 1814 6686
      1815 6696 1808 6698 1807 6722 1816 6720
      1821 6717 1835 6728 1841 6718 1849 6718
      1852 6712

$$

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, 2:20 AM CDTFlash Flood WarningJSJ5 hr
Sep 21, 2:25 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.