Expected

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Northern Crawford, Southern Crawford, Central and Southern Franklin, North and Central Sebastian, Northern Franklin, and Southern Sebastian Counties. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Visibilities are expected to be reduced to less than one quarter mile by dense fog. Rapidly changing visibility will create hazardous driving conditions. If driving, slow down, use your low beam headlights, and leave plenty of distance ahead of you.

A tropical disturbance, known as JTWC's Invest 99W, is currently centered near 8N145E west of Satawal. This system remains disorganized with little change in organization since yesterday. The chance of this system developing into a significant tropical cyclone is rated as sub-low by Joint Typhoon Warning Center (JTWC). Current estimations has the system passing near Fais and Ulithi before moving northward into the Philippine Sea. This system is expected to bring

* WHAT...Dangerous swimming conditions are expected due to high wave action and strong rip currents. * WHERE...Southern Schoolcraft County. * WHEN...From 8 AM EDT this morning through this evening. * IMPACTS...High wave action and dangerous currents will lead to life threatening swimming conditions. Waves in rapid succession can tire swimmers quickly. * ADDITIONAL DETAILS...Current related fatalities and rescues in the past have occurred due to similar wave conditions at locations listed below:

At 226 AM CDT, Doppler radar was tracking strong thunderstorms along a line extending from 6 miles southeast of Waelder to near Yoakum to near Yorktown. Movement was east at 40 mph. HAZARD...Wind gusts of 50 to 55 mph and half inch hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include... Cuero, Yoakum, Schulenburg, Hallettsville, Yorktown, Shiner, Moulton,

At 230 AM CDT, Doppler radar was tracking a strong thunderstorm near Hennepin, moving east at 30 mph. HAZARD...Wind gusts of 40 mph and nickel size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include... Sulphur, Davis, Wynnewood, Katie, Dougherty, Tatums, Ratliff City, Pooleville, Lake Of The Arbuckles, Turner Falls, Hennepin, Fox, and Pernell.

At 243 AM CDT, Doppler radar was tracking strong thunderstorms along a line extending from 8 miles east of Thackerville to Whitesboro to near Collinsville to near Celina. Movement was northeast at 40 mph. HAZARD...Winds in excess of 40 mph and nickel size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Strong thunderstorms will be near... Gunter, Dorchester, southern Lake Texoma, and Lake Texoma around

At 201 AM CDT, Doppler radar was tracking a strong thunderstorm 10 miles northwest of Goodwell, or 14 miles west of Guymon, moving northeast at 25 mph. HAZARD...Wind gusts up to 50 mph and half inch hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... Guymon and Hough. If outdoors, consider seeking shelter inside a building.

At 202 AM CDT, Doppler radar was tracking a strong thunderstorm over Terrell County Gas Plant, or 23 miles south of Sheffield, moving east at 20 mph. HAZARD...Wind gusts of 50 to 55 mph and penny size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... Terrell County Gas Plant. If outdoors, consider seeking shelter inside a building.

Patchy dense fog can be expected this morning, especially near the North Dakota border. Motorists should expect rapidly changing visibility, down to near zero at times. Remember to use your low beam headlights in fog, slow down, and provide plenty of braking distance between yourself and any vehicles in front of you.

* WHAT...Dangerous swimming conditions due to 4 to 8 foot waves and rip currents. * WHERE...Cheboygan, Presque Isle, Alpena, Alcona, Iosco, Arenac, Southeast Chippewa and Eastern Mackinac Counties, and Mackinac Island/Bois Blanc Island. * WHEN...From Saturday morning through Saturday evening. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. Remain out of the water to avoid hazardous swimming conditions.