May 1!

Today is considerably colder than yesterday, it was a little damp in the earlier hours, but now it is overcast clouds with a cold wind. Last night it rained heavily and there was a squal line and thunderstorms.

Temperature: 45°F
Dew point: 38°F
Humidity: 76%
Pressure: 1025.3 mb
Wind: NNW 11mph

 As you can see the cold air mass has begun to push south, changing the jetstream and covering wisconsin again in cold weather. We have a winter weather advisory today, with predictions stating snow. As you can see above, the wind shifted from yesterday coming from the SW and W to now the N and NW. Later today it is predicted to come from the N. The shift in wind direction will cool the moisture in the area and bring us cold rain and snow.

 You can see the polar air mass dipping the jetstream down from the north.

 There is a mid latitude cyclone over the south, as well as possibly developing over our area.