Weather tool: Water vapor satellites

9:15 PM, Jan 19, 2014   |    comments
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SACRAMENTO, Calif - Meteorologists use a Water Vapor Satellite to help forecast the weather. That particular satellite indicates when there is water vapor in the upper levels of the atmosphere, estimated at above 18,000 feet. At the same time, it also shows when there is no water vapor and just dry air. The satellite is used to follow upper level winds and jet streams, which are both helpful in predicting the movement of weather systems.

Our current weather forecast shows a high pressure system steering weather systems away from our area and keeping us dry. A Water Vapor Satellite would show if the current high pressure may be weakening and may finally allow more moisture to move into our area.

On the Water Vapor Satellite photo above, moisture is shown as green on the map and dry air is shown as a yellow. As you can see, there is no moisture anywhere near California. 


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