* WHAT. Heat index values up to 100 expected The central and southern lowlands of West Virginia. * WHERE. Boone, Kanawha, Lincoln, Logan, Putnam, and Cabell Counties. * WHEN. Until 5 PM EDT this afternoon. * IMPACTS. High temperatures and humidity may cause heat illnesses. * ADDITIONAL DETAILS. Approaching thunderstorms will likely end the heat threat by late afternoon.

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 506 IN EFFECT UNTIL 7 PM EDT THIS EVENING FOR THE FOLLOWING AREAS IN KENTUCKY THIS WATCH INCLUDES 4 COUNTIES IN NORTHEAST KENTUCKY BOYD CARTER GREENUP LAWRENCE IN OHIO THIS WATCH INCLUDES 2 COUNTIES IN SOUTHEAST OHIO GALLIA LAWRENCE IN VIRGINIA THIS WATCH INCLUDES 2 COUNTIES IN SOUTHWEST VIRGINIA BUCHANAN DICKENSON IN WEST VIRGINIA THIS WATCH INCLUDES 20 COUNTIES IN CENTRAL WEST VIRGINIA BRAXTON CALHOUN CLAY GILMER JACKSON NICHOLAS ROANE IN SOUTHERN WEST VIRGINIA BOONE FAYETTE KANAWHA LINCOLN LOGAN MCDOWELL MINGO PUTNAM RALEIGH WYOMING IN WESTERN WEST VIRGINIA CABELL MASON WAYNE THIS INCLUDES THE CITIES OF ALUM CREEK, ASHLAND, BECKLEY, BURNSVILLE, CANNONSBURG, CARTER CAVES STATE PARK, CEREDO, CHAPMANVILLE, CHARLESTON, CLAY, CLINTWOOD, CRAIGSVILLE, FAYETTEVILLE, FLATWOODS, GALLIPOLIS, GARY, GASSAWAY, GLENVILLE, GRANTSVILLE, GRAYSON, GRAYSON LAKE STATE PARK, GRUNDY, HAMLIN, HARTS, HUNTINGTON, HURRICANE, IRONTON, KENOVA, LAKE VESUVIUS, LOGAN, LOUISA, MADISON, MAN, MULLENS, NEW HAVEN, OAK HILL, OCEANA, OLIVE HILL, PINEVILLE, POINT PLEASANT, RACELAND, RAVENSWOOD, RICHWOOD, RIPLEY, RUSSELL, SAINT ALBANS, SOUTH CHARLESTON, SOUTH POINT, SPENCER, SUMMERSVILLE, SUTTON, TEAYS VALLEY, VANSANT, WAR, WAYNE, WELCH, WILLIAMSON, AND YATESVILLE LAKE STATE PARK.

SEVERE THUNDERSTORM WATCH 506 REMAINS VALID UNTIL 7 PM EDT THIS EVENING FOR THE FOLLOWING AREAS IN OHIO THIS WATCH INCLUDES 2 COUNTIES IN SOUTHEAST OHIO GALLIA LAWRENCE IN VIRGINIA THIS WATCH INCLUDES 2 COUNTIES IN SOUTHWEST VIRGINIA BUCHANAN DICKENSON IN WEST VIRGINIA THIS WATCH INCLUDES 20 COUNTIES IN CENTRAL WEST VIRGINIA BRAXTON CALHOUN CLAY GILMER JACKSON NICHOLAS ROANE IN SOUTHERN WEST VIRGINIA BOONE FAYETTE KANAWHA LINCOLN LOGAN MCDOWELL MINGO PUTNAM RALEIGH WYOMING IN WESTERN WEST VIRGINIA CABELL MASON WAYNE THIS INCLUDES THE CITIES OF ALUM CREEK, BECKLEY, BURNSVILLE, CEREDO, CHAPMANVILLE, CHARLESTON, CLAY, CLINTWOOD, CRAIGSVILLE, FAYETTEVILLE, GALLIPOLIS, GARY, GASSAWAY, GLENVILLE, GRANTSVILLE, GRUNDY, HAMLIN, HARTS, HUNTINGTON, HURRICANE, IRONTON, KENOVA, LAKE VESUVIUS, LOGAN, MADISON, MAN, MULLENS, NEW HAVEN, OAK HILL, OCEANA, PINEVILLE, POINT PLEASANT, RAVENSWOOD, RICHWOOD, RIPLEY, SAINT ALBANS, SOUTH CHARLESTON, SOUTH POINT, SPENCER, SUMMERSVILLE, SUTTON, TEAYS VALLEY, VANSANT, WAR, WAYNE, WELCH, AND WILLIAMSON.

SEVERE THUNDERSTORM WATCH 506 REMAINS VALID UNTIL 7 PM EDT THIS EVENING FOR THE FOLLOWING AREAS IN WEST VIRGINIA THIS WATCH INCLUDES 13 COUNTIES IN CENTRAL WEST VIRGINIA BRAXTON CALHOUN CLAY GILMER NICHOLAS ROANE IN SOUTHERN WEST VIRGINIA BOONE FAYETTE KANAWHA LOGAN MCDOWELL RALEIGH WYOMING THIS INCLUDES THE CITIES OF BECKLEY, BURNSVILLE, CHAPMANVILLE, CHARLESTON, CLAY, CRAIGSVILLE, FAYETTEVILLE, GARY, GASSAWAY, GLENVILLE, GRANTSVILLE, LOGAN, MADISON, MAN, MULLENS, OAK HILL, OCEANA, PINEVILLE, RICHWOOD, SAINT ALBANS, SOUTH CHARLESTON, SPENCER, SUMMERSVILLE, SUTTON, WAR, AND WELCH.