FloodZoneMap.org

Flash Flood — Onondaga, NY

Apr 26, 2011

A slow moving warm front pushed northward across central New York late in the afternoon on April 25th. A warm and relatively moist air mass covered the region, with showers and storms developing, especially in the unstable air south of the frontal boundary, where breaks in the cloud cover allowed temperatures to rise to near 70 degrees. Severe weather developed, and in addition to reports of severe wind damage and hail, plenty of wind shear in the vicinity of the warm front allowed for a few sup

Source: NOAA National Weather Service Storm Events Database (event 303330). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Onondaga, NY

This event is one of many recorded floods in Onondaga County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

View Onondaga County flood data →

More Flood Stories

Flash Flood1 death$500K damage

Onondaga, NY · Jun 30, 2015

An unseasonably strong storm system tapping into above normal moisture sources across the Great Lakes and Northeast triggered multiple heavy rain producing thunderstorms across the region.

Read the full account →
Flash Flood$3.1M damage

Onondaga, NY · Jul 1, 2017

A tropical moisture laden air mass produced numerous showers and thunderstorms which traveled repeatedly over the same areas of the Finger Lakes Region and Upper Mohawk Valley.

Read the full account →
Flash Flood$80K damage

Onondaga, NY · Aug 7, 2023

Thunderstorms developed ahead of a slow moving cold front tracking through Western and Central New York during the afternoon and evening. Numerous thunderstorm complexes moved over the same locations in Onondaga county producing up to 6 inches of rain in a short amount of time.

Read the full account →
Flash Flood$50K damage

Onondaga, NY · Aug 7, 2023

Thunderstorms developed ahead of a slow moving cold front tracking through Western and Central New York during the afternoon and evening. Numerous thunderstorm complexes moved over the same locations in Onondaga county producing up to 6 inches of rain in a short amount of time.

Read the full account →