 The National Weather Service has issued Severe Thunderstorm Watch number 491, effective until 11 p.m. This watch includes the following counties in North Carolina, Verde, Chillon, Gates, Halifax, Hartford, Northampton and Perkramans, and Curragh Sound. Remember, a severe thunderstorm watch means the conditions are favorable for the development of severe weather, including large hail and damaging winds, in and close to the watch area.