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THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 580 IN EFFECT UNTIL 8 AM CDT THIS MORNING FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 11 COUNTIES IN SOUTH CENTRAL IOWA UNION IN SOUTHWEST IOWA ADAIR ADAMS CASS IN WEST CENTRAL IOWA AUDUBON CALHOUN CARROLL CRAWFORD GREENE GUTHRIE SAC THIS INCLUDES THE CITIES OF ADAIR, ATLANTIC, AUDUBON, BAYARD, CARROLL, CASEY, CORNING, CRESTON, DENISON, EARLY, EXIRA,

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of eastern, north central, and south central Nevada, including the following areas, in eastern Nevada, White Pine. In north central Nevada, Southern Lander and Southern Eureka. In south central Nevada, Northeastern Nye and Northwestern Nye. * WHEN...Through Thursday evening. * IMPACTS...Excessive runoff may result in rock, mud, and debris flows in and near steep terrain, especially in and around recent burn scars.

SEVERE THUNDERSTORM WATCH 579...PREVIOUSLY IN EFFECT UNTIL 3 AM CDT EARLY THIS MORNING...IS NOW IN EFFECT UNTIL 4 AM CDT EARLY THIS MORNING FOR THE FOLLOWING AREAS IN NEBRASKA THIS WATCH INCLUDES 6 COUNTIES IN CENTRAL NEBRASKA GREELEY HOWARD SHERMAN VALLEY IN SOUTH CENTRAL NEBRASKA BUFFALO DAWSON THIS INCLUDES THE CITIES OF COZAD, GOTHENBURG, GREELEY, KEARNEY, LEXINGTON, LITCHFIELD, LOUP CITY, ORD, SCOTIA, SHERMAN RESERVOIR, SPALDING, ST. PAUL, WILLOW ISLAND, AND WOLBACH.

THE NATIONAL WEATHER SERVICE HAS EXTENDED SEVERE THUNDERSTORM WATCH 579 TO INCLUDE THE FOLLOWING AREAS UNTIL 4 AM CDT EARLY THIS MORNING IN NEBRASKA THIS WATCH INCLUDES 6 COUNTIES IN CENTRAL NEBRASKA MERRICK NANCE IN EAST CENTRAL NEBRASKA POLK YORK IN SOUTH CENTRAL NEBRASKA HALL HAMILTON THIS INCLUDES THE CITIES OF AURORA, CENTRAL CITY, FULLERTON, GENOA, GRAND ISLAND, OSCEOLA, POLK, SHELBY, STROMSBURG, AND YORK.

* WHAT...For the Heat Advisory, heat index values up to 112 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 116 possible. * WHERE...Portions of the Big Bend and Panhandle of Florida. * WHEN...For the Heat Advisory, from noon EDT /11 AM CDT/ today to 8 PM EDT /7 PM CDT/ this evening. For the Extreme Heat Watch, from Friday afternoon through Friday evening. * IMPACTS...Heat related illnesses increase significantly during

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to near 113 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 113 possible. * WHERE...Coastal Camden, Coastal Glynn, Inland Camden, and Inland Glynn Counties. * WHEN...For the Extreme Heat Warning, from 11 AM this morning to 8 PM EDT this evening. For the Extreme Heat Watch, from Friday morning through Friday evening.

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of northwest North Carolina, including the following areas, Alleghany NC, Ashe and Watauga, Virginia, including the following areas, Alleghany VA, Bath, Bland, Botetourt, Carroll, Craig, Floyd, Giles, Grayson, Montgomery, Pulaski, Roanoke, Rockbridge, Smyth, Tazewell and Wythe, and southeast West Virginia, including the following areas, Eastern Greenbrier, Mercer, Monroe, Summers and Western Greenbrier.

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 114 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 115 possible. * WHERE...Portions of southeast Georgia and southeast South Carolina. * WHEN...For the Extreme Heat Warning, from 11 AM this morning to 8 PM EDT this evening. For the Extreme Heat Watch, from Friday morning through Friday evening. * IMPACTS...Heat related illnesses increase significantly during

* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Much of central Indiana. * WHEN...Through Friday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Flooding is ongoing. More rain is expected through tonight. - http://www.weather.gov/safety/flood You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of east Tennessee, including the following areas, Anderson, Blount Smoky Mountains, Campbell, Claiborne, Cocke Smoky Mountains, Grainger, Hamblen, Hancock, Hawkins, Jefferson, Johnson, Knox, Loudon, Morgan, North Sevier, Northwest Blount, Northwest Carter, Northwest Cocke, Northwest Greene, Roane, Scott TN, Sevier Smoky Mountains, Southeast Carter, Southeast Greene, Sullivan,