Moderate

* WHAT...Life-threatening rip current. * WHERE...Exposed beaches of northern and southeastern Puerto Rico, Vieques, Culebra, and all the U.S. Virgin Islands. * WHEN...Through late tonight. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water, where it becomes difficult to return to safety. There is a high risk of rip currents. Rip currents are powerful channels of water flowing quickly away from shore, which occur most often at low spots or breaks in the

* WHAT...Southwest winds 25 to 35 mph with gusts up to 55 mph expected. * WHERE...Spring Mountains and Red Rock Canyon. * WHEN...From 3 PM Tuesday to 5 AM PDT Wednesday. * 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.

* WHAT...In Nye County, western Clark County, and Death Valley National Park, southerly-to-southwesterly winds 20 to 30 mph with gusts up to 50 mph expected. In Esmeralda County, northwesterly winds 20 to 30 mph with gusts to 45 mph. * WHERE...In California, Death Valley National Park. In Nevada, Esmeralda and Central Nye County and Western Clark and Southern Nye County. * WHEN...From 3 PM Tuesday to 5 AM PDT Wednesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree

* WHAT...Southwest-to-west winds 25 to 35 mph with gusts up to 50 mph expected. * WHERE...Western Mojave Desert. * WHEN...From 3 PM Tuesday to 5 AM PDT Thursday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Pockets of blowing dust may impact motorists on Interstate 15...40 and Highway 58. Winds this strong can make driving difficult, especially for high-profile vehicles. Use extra caution. Secure outdoor objects.

* WHAT...South winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...In Arizona, Lake Mohave - AZ side. In Nevada, Lake Mohave - NV side. * WHEN...From 3 PM PDT /3 PM MST/ Tuesday to 5 AM PDT /5 AM MST/ Wednesday. * 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. Strong winds and rough waves on area lakes will create hazardous

* The warmer air temperatures expected this afternoon may cause people to underestimate the dangers of the cold water temperatures which are currently only in the lower to mid 50s across Lake Champlain, and in the upper 40s to mid 50s in the region's smaller lakes and rivers. * The cold water temperatures can quickly cause hypothermia to anyone immersed in the water. When the water temperature is below 60 degrees, the average submerged person could lose dexterity within

A tropical disturbance, known as JTWC's Invest 99W, is currently centered near 8N141E, east of Sorol. Invest 99W continues to slowly improve in organization as the eastern half of the broader circulation begins to pivot to a more northeast to southwest orientation instead of an east to west orientation. This will allow for 99W to begin consolidating over the next few days. The JTWC has increased 99W to LOW, which means development into a tropical cyclone

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Portions of Eastern Upper and Northern Lower Michigan. * WHEN...Until 8 AM EDT 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.

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Beaver Island and surrounding islands. * WHEN...Until 8 AM EDT 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.

* WHAT...Dangerous rip currents. * WHERE...In Delaware, Delaware Beaches. In New Jersey, Eastern Monmouth, Atlantic Coastal Cape May, Coastal Atlantic and Coastal Ocean. * WHEN...Through this evening. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. Always obey posted Beach Flags. If you enter the surf zone, always have a floatation device with you and swim near a lifeguard if possible. If caught in a rip current, relax and