Lakeshore Flood Warning Issued for Oswego and Jefferson Counties
This alert is no longer in effect.
NOAA issued it on July 18, 2026, 5 weeks 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.
NWS Buffalo has issued a Lakeshore Flood Warning for the Lake Ontario shore of Oswego and Jefferson counties from 2 PM Thursday to 8 PM Friday.
Read this weather record in 30 seconds
- Record type
- Lakeshore Flood Warning
- Affected area
- Oswego and Jefferson Counties, NY
- Issued
- July 18, 2026
- Issuing authority
- NWS Buffalo NY
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 5 weeks ago; use the issuing agency's live warning service for current conditions in Oswego and Jefferson Counties, NY.
Alert Details
Lakeshore Flood Warning issued by NWS Buffalo NY. The alert was sent at 12:58 PM EDT on June 17, 2026, and is in effect from 2 PM Thursday to 8 PM EDT Friday.
Affected Areas
Lake Ontario shore of Oswego and Jefferson counties. Water rises are also possible along the upper Saint Lawrence River in the Thousand Islands region.
What You Should Do
Stay off breakwaters, piers, rock outcroppings and beaches. Expect significant beach erosion and debris, local road closures and extremely dangerous boating conditions.
Expected Conditions
Minor lakeshore flooding expected along the immediate lakeshore, especially in bays, inlets, harbors, and other low lying areas. Shoreline erosion is also expected due to high lake levels and significant wave action.
Timeline
The warning is effective from 2 PM Thursday (June 18) to 8 PM EDT Friday (June 19).
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 (876 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to July 18, 2026.
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Common questions about this NWS weather alert.