Friday, April 27, 2018

April 27, 2018

Temperature: 53°F
Dew Point: 35°F
Wind: NE 17 mph
Clouds: Cumulus Fractostratus
Precipitation: 20%

Today is a great day to watch the clouds. Figure 1 shows that in the Eau Claire area there is a cyclone moving over this area. Watch for vertical development in the cumulus clouds. If they continue to grow into Cumulonimbus clouds and the winds shift to strong SW winds, strong storms could be possible.

Figure 1. Surface winds (earth.nullschool.net).

However, because the wind is moving NE there is some precipitation likely. Right now there about 20% precipitation in the atmosphere. There is a drier streak across Eau Claire. And due to the fact that there is no rain forecast on the radar SW of Eau Claire, I do not think there is room for development for it to actually rain tonight.

Figure 2. United States Colored Water Vapor Satellite (accuweather.com).

The cold front is going to continue to move SE tonight with a series of Lows. This means that temperature will get down to the 30°F overnight. And for all of you who thought it would be time to finally sit out on your patio or have the first fire of the year, it will be 47°F by the time sun sets (8:06 p.m.). Make sure you bring a sweatshirt!
Figure 3. Surface Forecast for 8:00 PM EDT (intellicast.com).

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