Moderate

* WHAT...High temperatures up to 101. * WHERE...A portion of central California. * WHEN...Until 11 PM PDT Saturday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...Heat index values up to 108 expected. * WHERE...Chesterfield, Clarendon, Kershaw, Lee, Northern Lancaster, Southern Lancaster, and Sumter Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning

* WHAT...Heat index values up to 105 expected. * WHERE...Palo Duro Canyon County. * WHEN...From 1 PM to 8 PM CDT Saturday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and

* WHAT...High temperatures of 94 to 104 degrees expected with lows of 55 to 65 degrees. * WHERE...Central Siskiyou County and South Central Siskiyou County, including Yreka, Klamath River, Montague, Weed, Mount Shasta City, Dunsmuir and McCloud. * WHEN...From 11 AM Sunday to 11 PM PDT Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...High temperatures of 85 to 95 degrees with lows at night of 60 to 70 degrees expected. * WHERE...Curry County Coast, including Brookings and Harbor. * WHEN...Until 8 PM PDT Saturday. * IMPACTS...Hot temperatures may cause heat related illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...High temperatures of 85 to 95 degrees expected, except 75 to 85 at the beaches. Low temperatures of 55 to 65 degrees. * WHERE...South Central Oregon Coast, including all locations from Port Orford to Florence, and inland to Coquille and Myrtle Point. * WHEN...From 11 AM Sunday to 11 PM PDT Monday. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Strongest offshore flow will be Sunday, so beaches could get quite warm to hot then. Inland areas will be hot both days.

* WHAT...High temperatures of 90 to 102 degrees expected with low temperatures of 55 to 65 degrees. * WHERE...Central Douglas County and Eastern Douglas County Foothills, including Roseburg, Sutherlin, Elkton, Camas Valley, Glendale, Canyonville, Tiller and Toketee Falls. * WHEN...From 11 AM Sunday to 11 PM PDT Monday. * IMPACTS...Hot temperatures may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...High temperatures of 100 to 110 degrees expected with low temperatures of 60 to 65 degrees. * WHERE...Western Siskiyou County, including Seiad Valley, Happy Camp, Somes Bar, Fort Jones, Greenview, Etna and Callahan. * WHEN...From 11 AM Saturday to 11 PM PDT Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...High temperatures of 94 to 104 degrees expected with low temperatures of 60 to 65 degrees, except upper 60s in some typically warmer locations. * WHERE...Eastern Curry County and Josephine County and Jackson County, including Medford, Ashland, Eagle Point, Butte Falls, Shady Cove, Jacksonville, Applegate, Grants Pass, Merlin, Cave Junction, Obrien and Agness. * WHEN...From 11 AM Sunday to 11 PM PDT Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses.

* WHAT...Heat index values around 105. * WHERE...Portions of southeast Arkansas, northeast Louisiana, and central, north central, northwest, south central, southeast, southwest, and west central Mississippi. * WHEN...Until 8 PM CDT Saturday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose