Alert archive / Puerto Rico / Areal Flood Warnings in 2018

Areal Flood Warning 5, NWS JSJ

August 18, 2018

NWS JSJ issued this areal flood warning at Aug 18, 2018, 6:03 PM CDT. It was in force for 114 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 18, 2018, 6:03 PM CDT (23:03 UTC)
Expired: Aug 18, 2018, 7:57 PM CDT
In force: 114 min
Issued by: NWS JSJ
Area: Storm-based polygon
Flood severity: None

What forecasters said that day

The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS JSJ wrote its last area forecast discussion before this areal flood warning went out at Aug 18, 3:38 PM CDT, 2 hours 25 minutes earlier.

Area forecast discussion, Aug 18, 3:38 PM CDT, 2 hours 25 minutes before

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Hazardous weather outlook, Aug 18, 4:55 AM CDT, 13 hours 8 minutes before

Hazardous Weather Outlook...CORRECTED
National Weather Service San Juan PR
555 AM AST Sat Aug 18 2018

AMZ710>745-PRZ001>013-190900-
San Juan and Vicinity-Northeast-Southeast-Eastern Interior-
North Central-Central Interior-Ponce and Vicinity-Nortwest-
Western Interior-Mayaguez and Vicinity-Southwest-Culebra-Vieques-
The nearshore and off shore Atlantic and Caribbean Coastal Waters-
555 AM AST Sat Aug 18 2018

This Hazardous Weather Outlook is for Puerto Rico and the adjacent
Atlantic Coastal Waters.

.Day One...Today and Tonight

.Thunderstorms...There is a chance of thunderstorms with heavy rainfall
and brief gusty mainly across portions of the interior and western
Puerto Rico during the afternoon hours.

.Flooding...Heavy rains could lead to urban and small stream flooding.

.Wind...Sustained winds up to 20 MPH expected across the coastal areas
of northern and southern Puerto Rico.

.Waves...Choppy seas up to 5 feet occasionally up to 6 feet expected
mainly across the offshore Atlantic and Caribbean waters and local
passages.

.Rip Currents....There is a moderate risk of rip currents for
beaches of northern and southeastern Puerto Rico, as well as some
beaches of Vieques and Culebra.

.Days Two through Seven...Sunday through Friday

Another tropical wave is forecast to increase the chance for shower
and thunderstorm development late Sunday through Monday. The moderate
risk of rip current will continue through the weekend.

.Spotter information statement...

Widespread spotter activation is not anticipated, however individual
spotter are encouraged to report Flooding and Rip Currents to the
National Weather Service in San Juan.

AMZ715-725-VIZ001-002-190900-
St. Thomas St. John adjacent Islands-St Croix-
Nearshore Atlantic and adjacent Caribbean Coastal Waters-
555 AM AST Sat Aug 18 2018

This Hazardous Weather Outlook is for the U.S. Virgin Islands and the
ADJACENT Coastal Waters.

.Day One...Today and Tonight

.Rip Currents...There is a moderate risk of rip currents for
some of the beaches of St Croix.

.Days Two through Seven...Sunday through Friday

Another tropical wave is forecast to increase the chance for shower
and thunderstorm development late Sunday through Monday. The moderate
risk of rip current will continue through the weekend for some of the
beaches of St Croix.

.Spotter information statement...

Widespread spotter activation is not anticipated, however individual
spotter are encouraged to report  Flooding and Rip Currents to the
National Weather Service in San Juan.

In the hours before

Special weather statement, Aug 18, 12:12 PM CDT, 5 hours 51 minutes before

Special Weather Statement
National Weather Service San Juan PR
112 PM AST SAT AUG 18 2018

PRZ008>010-181800-
Northwest-Mayaguez and Vicinity-Western Interior-
112 PM AST SAT AUG 18 2018

...A STRONG THUNDERSTORM WILL AFFECT LAS MARIAS...ANASCO...
MAYAGUEZ...RINCON...AGUADA...MOCA AND AGUADILLA MUNICIPALITIES...

At 110 PM AST, a strong thunderstorm was located over Anasco, moving
west at 5 mph.

Winds in excess of 30 mph are possible with this storm.

This storm will be near...
  Las Marias and Anasco around 120 PM AST.
  Luyando around 135 PM AST.
  Aguada and La Playa around 150 PM AST.
  Rincon around 200 PM AST.

Other locations impacted by this storm include Stella and Espino.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 1838 6704 1825 6708 1825 6718 1829 6719
      1829 6720 1830 6724 1836 6727 1837 6727
      1837 6726 1838 6723 1839 6719 1840 6719
TIME...MOT...LOC 1710Z 091DEG 5KT 1830 6713

TW

Special weather statement, Aug 18, 12:21 PM CDT, 5 hours 42 minutes before

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Special weather statement, Aug 18, 1:05 PM CDT, 4 hours 58 minutes before

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Special weather statement, Aug 18, 1:25 PM CDT, 4 hours 38 minutes before

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The office that day

Everything else NWS JSJ issued on the same UTC day.

Issued	Product	Office	Lasted
Aug 18, 11:20 AM CDT	Areal Flood Advisory	JSJ	115 min
Aug 18, 11:39 AM CDT	Special Weather Statement	JSJ	36 min
Aug 18, 12:12 PM CDT	Special Weather Statement	JSJ	48 min
Aug 18, 12:22 PM CDT	Areal Flood Advisory	JSJ	113 min
Aug 18, 12:32 PM CDT	Areal Flood Advisory	JSJ	3 hr
Aug 18, 1:05 PM CDT	Special Weather Statement	JSJ	115 min
Aug 18, 1:54 PM CDT	Areal Flood Advisory	JSJ	3 hr
Aug 18, 2:03 PM CDT	Areal Flood Advisory	JSJ	3 hr
Aug 18, 3:31 PM CDT	Areal Flood Advisory	JSJ	3 hr
Aug 18, 5:00 PM CDT	Areal Flood Advisory	JSJ	76 min
Aug 18, 6:30 PM CDT	Areal Flood Advisory	JSJ	60 min

Nearby

Areal Flood Warnings in Puerto Rico, 2018 Every areal flood warning in 2018

Sources

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