NASA_Wallops Twitter feed:

9:30 p.m: We will not try a launch attempt on May 6. The next attempt will be Thursday, May 7. Launch window 8 - 11 p.m.

8:03 p.m: We have canceled the launch tonight because of the weather. Decision on next launch attempt later tonight.

4:48 p.m.
NASA Twitters updates for tonight's East-coast rocket launch: Weather looking iffy
This NASA Twitter feed seems the best source for Minotaur rocket-launch updates. (Great use of Twitter.) Little bulletins with all you need to know:

T-1 hour 45 minutes and holding. We need to have plane up by 8:30 p.m. to launch tonight. Continuing to watch the weather.8 minutes ago from web

6 p.m. T-2 hours and counting. The weather is our big probelm tonight. We can't get our plane up to look for boats.38 minutes ago from web

5 p.m, T-3 hours and counting. The weather is our big issue both at the launch site and for surveillance aircraft flyingover the ocean.about 2 hours ago from web

4 p.m. T-4 hours and counting. Weather still an issue. Looking for rain at the beginning of the window.about 3 hours ago from web ...