chaser sites

Extreme Instability
Mike Hollingshead

Under the Meso
Mike Umscheid

Mesoscale.ws
Eric Nguyen

Chase Day
Gene Moore

Cyclone Road
Amos Magliocco

TornadoVideos.net
Reed Timmer/Joel Taylor

Tornado Central
Jeff Snyder

Limetap.com
Matt Ziebell

Capture the Storm
Sam Dienst

OWLSP.com
Wes Luginbyhl

weather

Weather.gov
Official website of the National Weather Service containing a wealth of official weather data and forecasts.

The Weather Underground
My favorite source for current conditions and NWS forecasts.

Storm Prediction Center
Official site of the NOAA organization responsible for severe weather. Best place to find information about watches, convective outlooks, and mesoscale discussions. Past storm reports back several years are also available.

TwisterData
Hands down, the best third-party site for accessing NCEP model output (GFS, NAM, RUC).

RAP Real-Time Weather
Useful charts and maps for weather forecasting courtesy of the National Centers for Atmospheric Research.

Stormtrack.org
The Internet's premier message board for severe weather and thunderstorms. Lots of very useful posts here, particularly for those interested in storm chasing.

PSU e-Wall
It may be blasphemy for me to post this as an OU student, but this Penn State page has just about everything when it comes to model graphics and a great graphical MOS section.

PSC Weather's "Make Your Own"
Wonderful site courtesy of Plymouth State College in New Hampshire that allows you to create maps for a variety of observations, computer models, and even re-analysis of previous conditions back several years.

photography

Fred Miranda
Top-notch hub with reviews, a great message board, and more.

Digital Photography Review
The number one site I have found for digital camera news and reviews.

The Digital Picture
Another highly-regarded site with reviews of cameras and lenses. Focuses on Canon equipment.

Nature Photographers Online
Online magazine and community of talented nature photographers.

NatureScapes.Net
Another highly recommended community for nature photography enthusiasts.

The Radiant Vista
Features extremely helpful video and PDF tutorials for digital photographers, particularly regarding Photoshop.