Federal Emergency Management Agency

The federal agency in charge of cleanup after any natural disaster.

Gazetteer

It's not about weather but it does have tons of good information on places hit by weather. Just type in a city name or zip code and get census bureau data on the location.

Hurricane Center

The place to go when a hurricane is headed toward your beach house.

National Center for Atmospheric Research

Works with UCAR on research on the atmosphere and atmospheric disturbances. Lots of links to research papers.

National Oceanic and Atmospheric Administration

If it deals with oceans or weather or fisheries, it's here.

Extreme Weather Sourcebook

Economic and Other Societal Impacts Related to Hurricanes, Floods,Tornadoes, Lightning, and Other U.S. Weather Phenomena

NOAA's Storm Prediction Center

This severe weather center can tell you what areas are under storm alerts and provide you with cool weather pictures.

UCAR

A consortium of 63 research universities that research the atmosphere.

Weather Service

The National Weather Service home page has lots more than weather forecasts for your city.