The Storm Prediction Center in the United States has issued a PSD watch including a high risk for severe weather over a large area of north eastern USA. If in the area prepare for a tornado emergency especially this afternoon. Links to weather data, watches and warnings can be found on the SPC site (please do not flood the site if you are NOT in the danger area!) or follow storm chaser reports in real time in the side bar of this site (best way to conserve bandwidth and avoid emergency service sites from crashing).
Take care and stay safe!