Isolated severe storms will rumble across the southern Rockies and southern Plains today and tonight. Additionally, we still have a clipper system bringing scattered showers to the Great Lakes and Northeast. By late tonight, showers will begin to move into the Pacific Northwest as a new system approaches. This, along with our tropical update, is available at 5 a.m. ET in our daily briefing.

Low pressure scooting across the southern Plains this afternoon and evening will trigger downpours and isolated severe storms from Santa Fe, N.M., to El Paso, Texas and northeast to Oklahoma City. The WeatherRadar shows much of the activity occurring in the evening and overnight hours. Damaging winds and large hail are the main issues with these storms.

The low will also trigger central Rocky Mountain snowfall, with thundersnow possible with it. Those along I-25 in Colorado will hear overnight rainfall if they're light sleepers, with rain likely lasting into the Friday morning commute.

The same clipper system that has been slowly traversing the Midwest and Great Lakes this week continues to bring rain showers from Minnesota to the northern Ohio Valley and into Maine. We'll even see morning snow chances in northwest Minnesota and northern Wisconsin! See the WeatherRadar for the details.

In the Pacific Northwest, today will be mostly quiet except for the isolated showers moving in ahead of the next storm system, supported by an atmospheric river.

Highs will be in the 50s and 60s from San Francisco to the high, northern and central Plains. Warmer weather in the 70s and 80s will spread from Los Angeles to the Southeast and Florida. The coolest 40s and upper 50s will be found from the Upper Midwest to the Mid-Atlantic and Northeast.

Tropical Storm Melissa continues to churn in the Caribbean, where it is expected to stay through the next several days. Melissa could strengthen into a hurricane by Friday. Watch it closely on the WeatherRadar.

We continue to monitor the tropics as the Atlantic Hurricane Season lasts until November 30.

If you are (or input a location) within 5 miles of the coast, you can see the marine conditions as well as the high and low tide times, here.