Moderate

* WHAT...Southeast winds 15 to 25 mph with gusts up to 40 mph expected. * WHERE...Island County and San Juan County. * WHEN...From 2 AM to 8 PM PDT Wednesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Full foliage on trees may produce more widespread impacts than otherwise expected during the winter when trees are bare. Winds will be strongest along the water.

* WHAT...Heat index values up to 100-103 degrees. * WHERE...Portions of central and south central Iowa, including the Des Moines metro. * WHEN...Until 7 PM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...While heat index values may not reach 105 degrees each day, the combination of the longevity of the heat and little or limited relief during the overnight periods with warm lows have prompted the multi-day Heat Advisory.

* WHAT...Visibility around a quarter mile or less in dense fog. * WHERE...Grundy, Marshall, Tama, Butler, Black Hawk, and Bremer Counties. * WHEN...Until 8 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Menominee, Shawano, Southern Marinette County, and Southern Oconto counties. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Visibilities at times were down to a few hundred yards. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Langlade, Lincoln, Oneida, Vilas, Florence, Forest, Northern Marinette County, and Northern Oconto counties. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Visibilities at times were down to a few hundred yards. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

* WHAT...Peak heat index values up to 105 are expected each afternoon with limited relief from the heat and humidity overnight. * WHERE...All of central Indiana. * WHEN...From 2 PM this afternoon to 8 PM EDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. Drink plenty of fluids, limit time outdoors, and check up on relatives and neighbors.

* WHAT...East winds 15 to 25 mph with gusts up to 45 mph expected. * WHERE...In Louisiana, Northern Calcasieu and Southern Calcasieu Parishes. In Texas, Northern Jasper, Northern Newton, and Tyler Counties. * WHEN...From 7 AM this morning to 1 AM CDT Wednesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.

* WHAT...Visibility 1/4 mile or less in dense fog. * WHERE...Portions of central Upper and western Upper Michigan. * WHEN...Until 9 AM EDT /8 AM CDT/ this morning. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Areas in the lower elevations, particularly along the Lake Superior shoreline, may not experience dense fog. Be prepared for changing conditions as you head inland. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

* WHAT...Visibility 1/4 mile or less in dense fog. * WHERE...Menominee County. * WHEN...Until 8 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Dense fog is expected over the northern half of Menominee County. The city of Menominee will experience fog but visibility may stay well above 1/4 mile. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

* WHAT...Heat index values up to 105. * WHERE...Portions of south central, southwest, and west central Illinois and central, east central, northeast, and southeast Missouri. * WHEN...Until 8 PM CDT Friday. * 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. To reduce risk during outdoor work, the Occupational Safety and