From the home page click your state on the map or the name of your state below the map. On the next page click radar/lightning as your map type. Another way to display lightning is available using the Stormtracker. From the home page click the weather maps link on the left and choose Stormtracker. To zoom in click a region name above the map.
For more information on using the Stormtracker see the FAQ.
12:38 EST Tropical Cyclone Jack has rapidly developed over the warm waters of the Indian Ocean in the past 24 hours, making it the 10th system to be named this season.