* WHAT. Heat index values 105 to 109 expected. * WHERE. Portions of northeast North Carolina and central, east central, eastern, south central, and southeast Virginia. * WHEN. From 11 AM to 6 PM EDT Sunday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. South winds 15 to 20 kt with gusts up to 25 kt and waves 2 to 3 ft expected. * WHERE. Chesapeake Bay from Smith Point to Windmill Point VA, Chesapeake Bay from Windmill Point to New Point Comfort VA, Chesapeake Bay from New Point Comfort to Little Creek VA and Chesapeake Bay from Little Creek VA to Cape Henry VA including the Chesapeake Bay Bridge Tunnel. * WHEN. From 4 PM this afternoon to 1 AM EDT Sunday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. Dangerous rip currents are expected. * WHERE. In Maryland, Maryland beaches including Ocean City and Assateague Island. In Virginia, Accomack and Northampton Counties including the beaches of Assateague Island. * WHEN. Through this evening. * IMPACTS. Rip currents can sweep even the best swimmers away from shore into deeper water.