Moderate

* WHAT...Visibility of one quarter of a mile or less in dense fog. * WHERE...South Laramie Range and Foothills including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...Until 9 AM MDT 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.

The combination of record-high temperatures and elevated humidity levels will produce heat index values in the upper 90s to near 100 degrees this afternoon across much of southeast Missouri, southwest Illinois, and far western Kentucky. Those planning to be outdoors for extended periods to should follow heat safety measures, such as staying hydrated and taking frequent breaks in a shaded or air-conditioned location.

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...George, Perry, and Stone Counties. * WHEN...Until 9 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.

Thursday into the weekend, a series of low pressure systems will move toward Southeast Alaska, bringing widespread moderate to heavy rainfall and gale force winds to the Gulf. Strong winds are also expected for coastal and southern panhandle communities. While the exact timing and impacts of the system are still being refined, confidence is continuing to increase that this will be a more impactful system for Southeast Alaska. Stay tuned to weather.gov/juneau as we continue to monitor the

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Jefferson Davis, Lawrence, Marion, Covington, Forrest, Jones, and Lamar Counties. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. If driving, slow down, use your low beam headlights, and leave plenty of distance ahead of you.

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Portions of southeast Louisiana and southern Mississippi. * WHEN...Until 9 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.

Areas of fog have expanded across north-central and northeast Wisconsin early this morning. The fog was locally dense in spots, with a visibility of 1/4 mile or less, especially along the Lake Michigan shoreline from Manitowoc to Door County. If you have travel plans early this morning, be on alert for rapidly changing or poor visibilities as low as 1/4 mile or less in spots. Plan on extra time to reach your destination and allow extra room between you and the car in front of you.

As temperatures drop below freezing, any wet spots that lingered through the day have begun to freeze creating some slick spots. Use extra caution during the morning commute or if you are out walking around as you may come across some icy spots.

* WHAT...East to southeast winds 30 to 35 mph with gusts 50-60 mph are expected. The strongest winds may be focused immediately downstream of the higher terrain, and along terrain gaps and east-west oriented valleys Friday morning. * WHERE...A portion of Southeast Arizona. * WHEN...From 11 PM Thursday to 11 AM MST Saturday. * IMPACTS...Strong and gusty winds over desert areas could result in blowing dust, briefly lowering visibility below a mile at times. Difficult driving conditions will be present, especially for larger

Some patchy dense fog will restrict visibilities to less than one mile across parts of north Georgia. The fog should lift after 10 AM. If driving this morning, slow down, use low-beam headlights and leave extra distance between you and the vehicle in front of you.