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Thank you for stopping by the Weather Watch 12 blog! After a quiet start to March, the weather pattern is about to get much more active. Several chances of rain and snow are likely over the next 2-3 weeks.
The active pattern does not come as a surprise as we discussed this about a week ago when the long range March forecast was posted here in the blog. If you missed the March forecast based on the LRC, just click below…
In that forecast we talked about a system that would impact southeast Wisconsin as we neared this weekend, with at least a chance of accumulating snow. That chance still exists, but not before periods of rain showers sweep by Friday.
With the average high now near 40 in Milwaukee, this time of year can bring all precipitation types to the upper Midwest, including rain. On Friday, scattered rain showers are a good bet from morning into the afternoon. Temperatures will be somewhat tricky with a southeast wind blowing cold air above the frigid Lake Michigan waters over the lakeshore counties.
This is why I expect the warmest temperatures inland, in the 40s, with readings possible jumping into the low 40s near the lake late when winds briefly turn southwest or west.
Below is the RPM temperature forecast for 3pm Friday. Notice the upper 30s around Milwaukee.
Certainly warm enough to support a cold rain if precipitation is falling at this time. Several hours later the surface low will push close to the area. Below is the forecast surface map at 6pm Friday, this is from the HPC.
This has the potential to be a somewhat wet storm for our area when the rain and any melted down snow is taken into account. Below is the RPM total precipitation forecast through Saturday. This would put 0.50″-0.75″ in far southeast Wisconsin. Any shift north or south and this would make a huge difference in the forecast.
The biggest question from this storm is when the moisture turns to snow, and how much. I think this would occur late Friday night, closer to Saturday morning in Milwaukee. Then snow showers would be possible into Saturday. Potentially an inch or two of snow may accumulate, this will be another close call, so look for updates on WISN 12 News and here in the blog!
This part of the pattern matches very closely with November 24-26 with precipitation and then a push of cold air.
If you have any questions or thoughts please post them to the comments section of the blog!
Have a great day!