Moderate

At 211 PM EDT, Doppler radar was tracking strong thunderstorms along a line extending from near Vero Beach to Fort Pierce North to near Treasure Island. Movement was east at 10 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Port Saint Lucie, Walton, Fort Pierce, Stuart, and Vero Beach. If outdoors, consider seeking shelter inside a building.

* WHAT...West winds 25 to 35 mph with gusts up to 50 mph expected. * WHERE...Portions of northwest Minnesota and northeast and southeast North Dakota. * WHEN...From 10 AM to 7 PM CDT Tuesday. * 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. Secure outdoor objects.

At 1148 AM MDT, Doppler radar was tracking a strong thunderstorm 19 miles south of Grass Range, or 27 miles northwest of Roundup, moving east at 50 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. This storm will remain over mainly rural areas of southeastern Fergus County. If outdoors, consider seeking shelter inside a building.

At 153 PM EDT, National Weather Service meteorologists were tracking strong thunderstorms along a line extending from near Clewiston to 7 miles west of Lake Harbor to 8 miles northwest of Rotenberger Wildlife Refuge to near Big Cypress Seminole Reservation. Movement was east at 15 mph. HAZARD...Wind gusts of 45 to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...

* WHAT...Heat index values up to 108 in the afternoon. Overnight lows remaining in the mid to upper 70s. * WHERE...Portions of central, east central, northern, northwest, southeast, southern, and southwest Oklahoma and northern Texas. * WHEN...Until 7 PM CDT Tuesday. * 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 107 in the afternoon. Overnight lows remaining in the mid to upper 70s. * WHERE...Woods County. * WHEN...Until 7 PM CDT Tuesday. * 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.

At 1154 AM MDT, Doppler radar was tracking a line of strong thunderstorms extending from 11 miles west of Roundup to 7 miles northwest of Columbus, moving east at 35 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Columbus, Broadview, Molt, Comanche and Acton. This does NOT include the cityBillings. Strong winds may occur with little to no precipitation.

* WHAT...South winds 25 to 35 mph with gusts up to 50 mph expected. * WHERE...Municipality of Skagway. * WHEN...From 1 PM Tuesday to 1 AM AKDT Wednesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...The strongest winds are expected in the afternoon hours with the initial frontal passage. A brief period of gusts in excess of 50 mph is possible during that timeframe. Winds this strong can make travel difficult. Use extra caution.

* WHAT...High temperatures up to 102 and morning lows up to 75 expected. Widespread Moderate HeatRisk will be present with areas of Major HeatRisk in the foothills where the thermal belt is strongest and in urban areas. * WHERE...The San Joaquin Valley, Sierra Nevada Foothills, and West Side Hills along the Coastal Range. * WHEN...From 10 AM Wednesday to 10 PM PDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses, especially those without effective cooling and/or adequate hydration.

* WHAT...High temperatures 97 to 102 and low temperatures 65 to 75 expected, with widespread Moderate HeatRisk and areas of Major HeatRisk. * WHERE...The central and southern Sacramento Valley, northern San Joaquin Valley, Delta and Carquinez Strait, Foothills, and portions of the Coast Range. * WHEN...From 10 AM Wednesday to 10 PM PDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses, especially to anyone without effective cooling and/or adequate hydration.