Current Conditions
Temperature - 38 degrees Fahrenheit
Wind chill - 31 degrees F
Dew point - 13 degrees F
Wind direction - NE
Wind speed - 6 mph
Barometric pressure - 1030.11 g/kg
Cloud cover - broken (cumulus humilis)
I have big post for you folks today so let's get moving. Let's kick things off with a link -- relating to the unseasonably warm March we had -- that I would like you all to check out.
http://www.accuweather.com/en/weather-news/noaa-release-unprecedented-mar/63833
Next let's take a peak at a surface map for today and an upper air mass map as well.
Before I address conditions in the Eau Claire area, I want to familiarize you all a bit more with surface maps. Today's topic is the dryline, which is the dashed brown line you have seen in maps I have posted in the past. The dryline depicts the converging boundaries of two airmasses with radically different in moisture content but with very little difference in temperature. Look at the map and you'll notice a dry line on the eastern side of Arizona, extending down into Mexico. Dry lines in this area and just east of the Rocky Mountains are common, due to warm dry air descending over the leeward side of mountains and warm moist air being drawn northward by a low pressure system. Dry lines often cause precipitation, which is exactly what is happening in New England today. As for Eau Claire, well we have another issue to worry about.
As you can see the jet stream moving right over Eau Claire today. This is what explains the colder temperatures and high wind speeds again today. As was the case yesterday, we have to worry about freezing overnight. Tonight and early tomorrow morning will actually be a bigger threat than last night and this morning. I know what your thinking, it was indeed colder and windier yesterday. When it comes to frost, wind is actually our friend because is doesn't allow for cold air to sink to the ground developing frost. If wind speeds continue to die down overnight we are in trouble. Here are the current projections for tomorrow.
I personally think that we will see some frost tomorrow morning. However I predict that we will have clear skies tomorrow and hopefully the sun will be able to burn off the frost quickly.
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