Moderate

* WHAT...For the first Heat Advisory, heat index values up to 109. For the second Heat Advisory, heat index values up to 110 expected. * WHERE...Portions of southeast Arkansas, northeast Louisiana, and central, east central, north central, northeast, south central, southeast, and southwest Mississippi. * WHEN...For the first Heat Advisory, until 9 PM CDT this evening. For the second Heat Advisory, from 10 AM to 9 PM CDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

* WHAT...For the Heat Advisory, heat index values up to 110. For the Extreme Heat Warning, dangerously hot conditions with heat index values in excess of 110 degrees. * WHERE...Portions of central, north central, northwest, southwest, and west central Mississippi. * WHEN...For the Heat Advisory, until 9 PM CDT this evening. For the Extreme Heat Warning, from 10 AM to 9 PM CDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high

* WHAT...Life threatening waves of 4 to 6 feet and dangerous currents are expected. * WHERE...Sheboygan, Ozaukee, Milwaukee, Racine and Kenosha Counties. * WHEN...From late Monday night through Wednesday morning. * IMPACTS...Dangerous swimming conditions are expected due to high waves and onshore winds. Stay out of the water and away from dangerous areas like piers and breakwalls. Strong structural and longshore currents are expected. Rip currents are possible.

At 258 PM EDT, a strong thunderstorm was near Rayle, or 8 miles west of Washington, moving south at 10 mph. HAZARD...Up to 40 mph wind, pea sized hail and frequent cloud to ground lightning. SOURCE...Radar indicated. IMPACT...Expect minor damage to tree limbs and blowing around of light, unsecured objects. Locations impacted include... Washington, Rayle, Ficklin, Newtown, Lundberg, Celeste, Lyneville, Philomath, Sandy Cross, and Carters Grove. People outdoors should seek shelter immediately. If you can hear

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 112. For the Heat Advisory, heat index values up to 106 expected. * WHERE...Portions of south central and southeast Kansas. * WHEN...For the Extreme Heat Warning, until 9 PM CDT this evening. For the Heat Advisory, from 9 PM this evening to 8 PM CDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with temperatures up to 102 occurring. For the Heat Advisory, temperatures up to 97 expected. * WHERE...Custer. * WHEN...For the Extreme Heat Warning, until midnight MDT tonight. For the Heat Advisory, from midnight tonight to midnight MDT Tuesday Night. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Hot daytime temperatures combined with warm overnight low temperatures will produce cumulative heat stress.

* WHAT...Temperatures up to 95 expected. * WHERE...Bighorn Canyon, Treasure, and Northern Rosebud. * WHEN...Until midnight MDT Tuesday Night. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Hot daytime temperatures combined with warm overnight low temperatures will produce cumulative heat stress. This heat stress will quickly become dangerous to anyone without adequate cooling and hydration. Take extra precautions when outside. Wear lightweight and loose

* WHAT...Temperatures up to 98 occurring. * WHERE...Powder River and Southern Rosebud. * WHEN...Until midnight MDT tonight. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Hot daytime temperatures combined with warm overnight low temperatures will produce cumulative heat stress. This heat stress will quickly become dangerous to anyone without adequate cooling and hydration. 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 107 and warm night time lows will bring little relief. * WHERE...In Colorado, Lower Yampa River Basin and Grand Valley. In Utah, Arches/Grand Flat, Eastern Uinta Basin, Canyonlands/Natural Bridges, and Southeast Utah. * WHEN...Until 6 AM MDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...For the first Heat Advisory, heat index values up to 110. For the second Heat Advisory, heat index values up to 112 expected. * WHERE...Portions of northeast and northern Florida and southeast Georgia. * WHEN...For the first Heat Advisory, until 8 PM EDT this evening. For the second Heat Advisory, from 11 AM to 8 PM EDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of