Flood Warning Issued for Somerset County, NJ Following Heavy Rainfall

Alert Details

The National Weather Service in Mount Holly, NJ has issued a Flood Warning for Somerset County. The alert was issued at 6:22 AM EST on March 6, 2026, and remains in effect until 10:30 AM EST.

Affected Areas

This warning specifically impacts Somerset County in northern New Jersey.

What You Should Do

Residents and motorists are urged to follow the safety mantra: “Turn around… don’t drown.” Most flood-related deaths occur in vehicles. Do not attempt to drive through flooded roads or low-lying areas. Individuals in flood-prone locations should remain vigilant and avoid areas where water is rising.

Expected Conditions

Flooding caused by excessive rainfall is currently occurring or imminent. Gauge reports as of 6:22 AM EST indicate that between 1 and 2 inches of rain have already fallen in the region. While no additional rainfall is expected this morning, flooding impacts are projected to continue.

Specific river observations include:

• North Branch Raritan River at South Branch: As of 6:00 AM, the river stage was recorded at 8.14 feet. The established flood stage for this location is 8 feet.

Timeline

The Flood Warning is effective immediately and is scheduled to expire at 10:30 AM EST on March 6, 2026. Flooding of rivers, creeks, streams, and other low-lying locations is expected to persist through the duration of the warning window.