Alert archive / Puerto Rico / Flash Flood Warnings in 2012

Flash Flood Warning 12, NWS JSJ

March 29, 2012

NWS JSJ issued this flash flood warning at Mar 29, 2012, 8:38 PM CDT. It was in force for 3 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
Mar 29, 2012, 8:38 PM CDT (01:38 UTC)
Expired
Mar 29, 2012, 11:30 PM CDT
In force
3 hr
Issued by
NWS JSJ
Area
Storm-based polygon
Flood severity
None

The radar

The San Juan radar (TJUA), 47 km from the middle of the area, began a volume at 01:41 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.

The text

As transmitted, in the capitals the NWS used until 2016.

321 
WGCA52 TJSJ 300138
FFWSJU
PRC037-053-300430-
/O.NEW.TJSJ.FF.W.0012.120330T0138Z-120330T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
938 PM AST THU MAR 29 2012

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     CEIBA
     FAJARDO

* UNTIL 1230 AM AST

* AT 932 PM AST...WEATHER DOPPLER RADAR INDICATED HEAVY SHOWER 
ACTIVITY ACROSS PORTIONS OF THE WARNED AREA. THIS HAS RESULTED IN 
SIGNIFICANT RISES ON RIO FAJARDO. RESIDENTS IN FLOOD PRONE AREAS 
SHOULD MOVE TO HIGHER GROUND IMMEDIATELY AND NEVER TRY TO CROSS
A FLOODED ROADWAY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

&&

LAT...LON 1827 6563 1826 6574 1828 6574 1835 6563

$$

OMS

ADDITIONAL INFORMATION CAN BE FOUND AT /USE LOWER CASE LETTERS/:
     HTTP://WWW.WEATHER.GOV/SANJUAN
1 follow-up statement
896 
WGCA72 TJSJ 300434
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
1234 AM AST FRI MAR 30 2012

PRC037-053-300443-
/O.EXP.TJSJ.FF.W.0012.000000T0000Z-120330T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CEIBA PR-FAJARDO PR-
1234 AM AST FRI MAR 30 2012

...THE FLASH FLOOD WARNING HAS EXPIRED FOR FAJARDO AND CEIBA
MUNICIPALITIES...

DOPPLER RADAR INDICATED THAT THE HEAVY RAIN WHICH AFFECTED THIS AREA
HAD DISSIPATED OR MOVED AWAY. NO SIGNIFICANT ADDITIONAL RAINFALL IS 
EXPECTED ACROSS THESE AREAS AT THIS TIME. THEREFORE THE FLASH FLOOD 
WARNING WAS ALLOWED TO EXPIRE.

RESIDENTS AND MOTORISTS ACROSS THESE AREAS SHOULD HOWEVER BE ALERT TO
PONDING OF WATER ON ROADWAYS AND ALLOW TIME FOR STREAMS...CREEKS AND
RIVERS TO RETURN TO NORMAL LEVELS.

LAT...LON 1827 6563 1826 6574 1828 6574 1835 6563

$$

JJA

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.

IssuedProductOfficeCountiesLasted
Mar 29, 7:17 PM CDTAreal Flood AdvisoryJSJ8 hr
Mar 29, 7:32 PM CDTAreal Flood AdvisoryJSJ118 min
Mar 29, 9:33 PM CDTFlash Flood WarningJSJ3 hr
Mar 29, 9:34 PM CDTSpecial Marine WarningJSJ86 min
Mar 29, 10:37 PM CDTSpecial Marine WarningJSJ53 min
Mar 29, 11:27 PM CDTSpecial Marine WarningJSJ93 min
Mar 30, 1:00 AM CDTSpecial Marine WarningJSJ60 min
Mar 30, 3:24 AM CDTAreal Flood AdvisoryJSJ111 min
Mar 30, 7:37 AM CDTAreal Flood AdvisoryJSJ3 hr
Mar 30, 10:03 AM CDTAreal Flood AdvisoryJSJ3 hr
Mar 30, 10:37 AM CDTFlash Flood WarningJSJ6 hr
Mar 30, 10:41 AM CDTAreal Flood AdvisoryJSJ3 hr
Mar 30, 11:35 AM CDTAreal Flood AdvisoryJSJ77 min
Mar 30, 11:53 AM CDTAreal Flood AdvisoryJSJ3 hr
Mar 30, 2:09 PM CDTAreal Flood AdvisoryJSJ118 min
Mar 30, 3:20 PM CDTAreal Flood AdvisoryJSJ3 hr
Mar 30, 3:32 PM CDTAreal Flood AdvisoryJSJ3 hr
Mar 30, 3:56 PM CDTSpecial Marine WarningJSJ94 min
Mar 30, 4:27 PM CDTAreal Flood WarningJSJ7 hr
Mar 30, 5:09 PM CDTSpecial Marine WarningJSJ51 min

Nearby

Flash Flood Warnings in Puerto Rico, 2012Every flash flood warning in 2012

Sources

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