Flash Flood Warning Issued for Juncos, Las Piedras, and San Lorenzo in Puerto Rico
This alert is no longer in effect.
NOAA issued it on April 16, 2026, 4 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
The National Weather Service in San Juan, PR, has issued a Flash Flood Warning for Juncos, Las Piedras, and San Lorenzo counties until 5:00 PM AST, with heavy rain causing ongoing flooding.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- Eastern Puerto Rico
- Issued
- April 16, 2026
- Issuing authority
- NWS San Juan PR
Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Eastern Puerto Rico.
Flash Flood Warning in Puerto Rico
Alert Details
A Flash Flood Warning has been issued by the National Weather Service in San Juan, PR. It is effective from 1:58 PM AST until 5:00 PM AST on April 16, 2026.
Affected Areas
The warning affects Juncos County, Las Piedras County, and San Lorenzo County in Puerto Rico. Specific locations include San Lorenzo, Juncos, Las Piedras, La Fermina, Jagual, El Mango, and Pueblito Del Rio. PR-936 in Las Piedras is closed due to flooding.
What You Should Do
Turn around, don't drown when encountering flooded roads. Be aware of your surroundings and do not drive on flooded roads. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely.
Expected Conditions
Doppler radar indicates thunderstorms producing heavy rain. Between 2 and 6 inches of rain have fallen, with additional rainfall amounts of 1 to 2.5 inches possible in the warned area. Flash flooding is ongoing or expected to begin shortly, affecting small creeks, streams, urban areas, highways, streets, underpasses, and other poor drainage and low-lying areas.
Timeline
The alert is effective from 1:58 PM AST on April 16, 2026, until 5:00 PM AST on the same day.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,304 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to April 16, 2026.
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Common questions about this NWS weather alert.