This article summarizes the latest forecast for western Wisconsin as a warm, humid air mass settles in. This pattern raises the potential for significant storms Sunday night and especially Monday.
Forecasters highlight timing, hazard types, and key uncertainties. Practical safety steps for residents are also emphasized.
The discussion reflects the Storm Prediction Center’s evolving outlook. There is a need for vigilance as weather patterns shift through the afternoon and evening.
Weekend Weather Overview
The setup features temperatures in the 70s with dew points in the low 60s. Breezy winds from the south-southwest are expected, with gusts reaching 30–35 mph.
Sunday night is expected to stay mostly dry. An isolated shower or thunderstorm remains possible north of I-94/WI-29.
Attention then shifts to Monday. The Storm Prediction Center may elevate the risk, signaling the potential for numerous severe storms across much of the WQOW viewing area.
Outside the far north, much of Wisconsin is forecast to be at least a level 2 risk. The level 3 area is focused on western and central counties.
Sunday: Warm, Humid Start with Limited Early Activity
On Sunday, the atmosphere will be warm and muggy. Lingering humidity could prime storms for later in the day.
The exact initiation point and timing depend on the warm front’s position and how much daytime heating occurs. An isolated shower or thunderstorm is possible, particularly north of the interstate corridor.
Widespread convection is not expected Sunday evening. As sunset approaches, the cap may weaken enough for storms to begin to form, especially if cloud cover decreases or if boundaries become more defined.
Monday: Heightened Severe Weather Threat Across Most of the Region
The main event centers on Monday, with the SPC targeting a level 3 (out of 5) severe risk for much of the western and central portions of Wisconsin. This includes a broad swath of the WQOW viewing area.
A level 2 risk covers much of the rest of the state. The far north remains outside the higher threat area.
The most likely window for storms is mid- to late afternoon through midnight. The evening hours present the greatest potential for significant activity.
All severe hazards are possible: very large hail up to 2 inches or larger, damaging straight-line winds, and a few isolated tornadoes. A hatched zone would indicate a higher potential for strong tornadoes (EF2+).
Hazards, Uncertainties, and Possible Weather Scenarios
Key uncertainties include the exact location of the warm front and how much daytime heating is realized. The presence and strength of a cap (the CAP) could suppress storm development.
If storms remain isolated or scattered, the tornado and hail threat becomes more pronounced. If they organize into a line, damaging winds become the dominant concern, though tornadoes could still occur in any discrete cells or along a boundary.
Forecast guidance suggests storms may form along the warm front and move northeast. They could then shift east and potentially congeal into a line by evening.
Because of these dynamics, timing and locations could shift as new data arrive. Regular weather updates are important through the day and into the evening.
Safety and Preparedness: How to Stay Ready
Residents are urged to stay weather-aware on Monday and have multiple ways to receive alerts. Know where to shelter if a warning is issued.
Practical steps include proactively reviewing alert settings. Identify shelter locations in your home, work, and school.
Ensure you have a plan for pets and family members. The following actions are recommended:
- Review alerts and have a plan: Determine where you will seek shelter during a warning (basement, interior room away from windows).
- Prepare an emergency kit: Water, non-perishable food, flashlight, batteries, a first-aid kit, and a portable radio or phone with power backup.
- Secure outdoor items and ensure adequate fuel in vehicles in case you need to travel or evacuate at short notice.
- Stay away from windows and avoid large trees during storms; if caught in a vehicle, seek sturdy shelter if possible.
- After storms pass, assess safety before going outside—watch for downed power lines, gas leaks, and structural damage.
Staying informed is your best defense. Monitor trusted forecasts, local updates, and official warnings as the day unfolds.
Here is the source article for this story: Chance for strong to severe thunderstorms remains in the forecast Monday afternoon and evening