SEVERE WEATHER OUTLOOK:
The Storm Prediction Center has the entire Northland under a slight risk of severe thunderstorms, with a marginal risk to our far east, including Butternut, Mercer, Ironwood and Watersmeet. The risk has already paid off in Beltrami and Lake of the Woods Counties with a Tornado Warning. Tornado Watch is in effect for Beltrami, Lake of the Woods, Koochiching, Itasca and St Louis Counties until 9 PM.
A pair of lows will push east and northeast into tonight, with a warm front pushing through. Rain and thunderstorms will continue for most of the night, but should gradually subside throughout the night. Storms, however, may continue into early Thursday morning across northern WI. Some storms could be strong to severe, and heavy rain is possible as well. Winds will be E to SE around 5-15 mph, but turning more S and SW overnight. Lows only falling back into the 60s, but some mid to upper 50s are possible up the North Shore.
Large hail, damaging winds and heavy rain are the main threats. The tornado risk is low, but not zero percent.
The showers and storms will linger through about sunrise, but conditions will improve and skies will clear into the afternoon. Winds trend W to SW around 5-15 mph. The heat and humidity will unfortunately return as well, as highs get back into the mid to upper 80s. Heat indices will be in the upper 80s to low 90s, with the highest heat indices expected in northern Wisconsin. Lows fall back into the 60s to near 70 Thursday night with partly to mostly cloudy skies and a slight chance of some showers and storms.
The heat and humidity sticks with us Friday with a mix of clouds and sun and highs in the mid 80s to low 90s. Heat indices could reach the mid 90s in northern WI. A cold front will bring a chance of showers and storms Friday afternoon into Saturday, but only about a 30% chance. Conditions improve into the second half of the weekend, along with cooler temperatures. Highs will be in the mid 70s to mid 80s Saturday, but slightly cooler into Sunday, falling back into the 70s.
EARLY NEXT WEEK:
A large area of high pressure will settle into the region, giving us partly cloudy to mostly sunny skies and comfortable conditions. Highs will be in the mid 70s to low 80s. Lows overnight in the 50s to near 60.