Monday, April 30, 2018

April 30, 2018

Temperature: 79°F
Dew Point: 45°F
Wind: SSE 22 mph
Clouds: Altostratus
Precipitation: 20%

Temperatures are high today with winds coming from the south. Today's high was 81°F and tonight temperature will stay on the warmer side with a low of 59°F. Where the line is carved in the wind patterns of Figure 1, shows the cold front dividing the US by cold vs warm temperatures.

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

A warm front is crashing with the cold front, creating a series of thunderstorms over the Dakotas. If the low pressure system continues to move west, Wisconsin should see these strong thunderstorms tomorrow.
Figure 2. Current surface (intellicast.com). 

A stretch of high precipitation is extending from the Dakotas to Texas. South of the cold front, there is a moisture change indicated by the dryline on the surface map (Figure 2).
Figure 3. United States Colored Water Vapor Satellite (accuweather.com).

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