U.S. emergency agencies have issued urgent alerts in response to extreme weather events and geological activity, raising concern across both the Midwest and the West Coast.

Heavy rainfall across the Midwest and Northeast has led the National Weather Service (NWS) to issue flash flood warnings for parts of Illinois, Indiana, Pennsylvania, and New York. Days of continuous storms have overwhelmed drainage systems and raised river levels.

Rainfall rates have reached over two inches per hour in some locations. With the ground already saturated, urban flooding and small stream overflows are now likely. Emergency officials are urging residents in vulnerable areas to prepare for possible evacuation.

The NWS has also warned of potential dam overflows and river surges through Wednesday. Residents are advised to avoid flooded roadways and keep emergency kits ready, including food, water, and critical supplies.

Meanwhile, on the West Coast, the U.S. Geological Survey (USGS) is monitoring a series of small earthquakes off Northern California and near the Cascadia Subduction Zone. These minor tremors, known as earthquake swarms, are being watched closely.

Although not an immediate cause for alarm, geologists caution that such swarms can sometimes indicate building tectonic pressure. If a major undersea quake were to occur in this zone, tsunami risks could affect coastal communities in Oregon, Washington, and Northern California.

Dr. Elena Moore of the USGS emphasized the importance of preparedness. “We’re not predicting a major quake, but this is a reminder that the region is seismically active. Coastal communities should review evacuation maps and be ready.”

Authorities are encouraging all residents—whether facing floods or earthquake risks—to monitor local alerts, know evacuation routes, and stay prepared. Officials stress that awareness and quick action can save lives in rapidly changing situations.