Moderate

At 838 PM MDT, Radar shows a line of strong thunderstorms extending from 13 miles southeast of Volborg to 9 miles west of Biddle, or extending from 22 miles north of Broadus to 26 miles south of Broadus, moving east at 35 mph. HAZARD...Wind gusts up to 50 mph and half inch size hail. SOURCE...Automated observations reported wind gusts up to 54 mph over southwest Powder River County. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible.

At 810 PM MDT, Doppler radar was tracking a strong thunderstorm 8 miles northwest of Arlington, or 32 miles north of La Junta, moving northeast at 15 mph. HAZARD...Wind gusts up to 50 mph and brief 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... Haswell. If outdoors, consider seeking shelter inside a building.

* WHAT...Dangerous rip currents and breaking waves due to elevated surf of 3 to 6 feet with local sets to 7 feet on south facing beaches. * WHERE...Catalina and Santa Barbara Islands, Malibu Coast and Los Angeles County Beaches. * WHEN...From Tuesday morning through Thursday evening. * IMPACTS...There is an increased risk of ocean drowning. Rip currents can pull swimmers and surfers out to sea. Waves can wash people off beaches and rocks, and capsize small boats nearshore.

* WHAT...Dangerous rip currents and breaking waves due to elevated surf of 3 to 6 feet with local sets to 7 feet on south facing beaches. * WHERE...Ventura County Beaches. due to elevated surf of 3 to 6 feet with local sets to 7 feet on south facing beaches. * WHEN...From Tuesday morning through Thursday evening. * IMPACTS...There is an increased risk of ocean drowning. Rip currents can pull swimmers and surfers out to sea. Waves can

At 745 PM MDT, Doppler radar was tracking strong thunderstorms along a line extending from 10 miles south of Wild Horse Point to 8 miles northeast of Sugar City. Movement was northeast at 25 mph. HAZARD...Wind gusts up to 50 mph and brief pea 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... Arlington. If outdoors, consider seeking shelter inside a building.

* WHAT...This level of heat affect most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Impacts possible in some health system and in heat-sensitive industries. * WHERE...Portions of Puerto Rico and Virgin Islands. * WHEN...From 10 AM to 5 PM AST Monday. * 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 732 PM MDT, Doppler radar was tracking a line of strong thunderstorms extending from near Ashland to 33 miles east of Sheridan, or extending from 23 miles southeast of Colstrip to 33 miles east of Sheridan, moving east at 55 mph. HAZARD...Wind gusts of up to 55 mph and penny 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...

At 739 PM MDT, Doppler radar was tracking a strong thunderstorm 5 miles northwest of Westplains, or 28 miles northwest of Sterling, moving northeast at 20 mph. HAZARD...Wind gusts of 50 to 55 mph and half inch 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... Peetz and Westplains. Monitor the weather situation closely and be alert for threatening weather conditions.

At 740 PM MDT, Doppler radar was tracking strong thunderstorms along a line extending from 11 miles northeast of Ellsworth to 14 miles southeast of Crescent Lake National Wildlife Refuge. Movement was east at 30 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... Arthur, Ellsworth, Hyannis, Whitman, Ashby, Duluth, Big Hill, Dogtown

At 704 PM MDT, Doppler radar was tracking a strong thunderstorm near Gurley, or 11 miles north of Sidney, moving northeast at 20 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... Dalton, Gurley, Broadwater, Colton, and Sunol. If outdoors, consider seeking shelter inside a building.