May 10

Temperature: 43F

Dewpoint: 27F

Humidity: 53%

Pressure: 1018.6 mb

Wind: NE 11mph

As you can see today we are still feeling the effect of the low pressure system that gave us rain yesterday. The north east wind is indicative of that counter clockwise movement. We should expect the wind to move to the north.

May 13

May 8

Today is very nice outside. No precipitation. As you can see in the image below, we have some cumulus humulis, and possibly mediocris clouds. I expect that by this evening the clouds will turn into cumulus congestus clouds, and thus thuderstorms possibly tomorrow or on thursday.

 

 

Temperature: 76°F

Dew point: 42°F

Humidity: 30%

Pressure: 1015.3mb

Wind: NNE 4 mph

 

 

So there is still a high pressure system over the great lakes, which is giving us nice weather. However, there is a cold front approaching, from a polar air mass, causing the wind to come from the NE, however as that low pressure system near colorado moves east, the wind may shift coming from the south or east. bringing rain and thunderstorms.

 



The low pressure system on the east coast is still cycling but it is dying out. you can see the low over south dakota is swirling, but you can see the moisture developing near colorado.

May 7

Today was nice again, finally don't need my winter coat! it was a little chilly, but has since warmed up.

Temperature: 63°F
Dewpoint: 43°F
Humidity: 49%
Pressure: 1018.2 mb
Wind: calm

 As you can see we are in for some nice weather. High pressure systems abound, for today and tomorrow at least, we can expect nice sunny weather and warm temperatures. That low over colorado may swoop by and give us some precipitation later in the week possibly around Thursday; I'd like to venture that the warm air from the maritime tropical airmass near Florida will likely create thunderstorms as that low pressure area follows the jetstream up toward Wisconsin.

Here you can see the low pressure system over the east coast is weak but forming a light cyclone. The water vapor is forming that distinct comma shape.

May 6

Sorry for not posting on the weekend, I should have but I was lazy, working on work and other projects as the semester starts to wind down.

Today was finally a nice day, I woke up and saw green again as the snow is melting away.

Temperature: 58°F
Dew point: 43°F
Humidity: 58%
Pressure: 1019.1 mb
Wind: W 3mph

 As you can see Wisconsin ins in the middle of a stationary front. We have a high pressure system to the north west, that is forcing the wind west and down. The low system over Tennessee is forming a nice cyclone system, which can be seen further down on the blog in the weather vapor image.

 You can see the low system over tennesse. There is an inverted trough over the great lakes.

 The temperatures have gotten nicer as the cold air mass disappeared.

May 3

It was raining lightly this morning, car was covered in ice pellets.

Temperature: 34°F
Dewpoint: 30°F
Humidity: 87%
Pressure: 1023.9mb
Wind: NNE 7mph

 Here is today's surface map, you can see the low pressure system is really prevalent over Illinois, rotating there, creating bad weather for us. The continental polar air mass is still pushing south giving most of the United States cool temperatures.

Its May 2, I think...

So today it started snowing earlier in the morning/night, and when we woke up it was covered. At this posting time there is probably over 7" in Eau Claire. CRAZY! I don't think we need a picture, sky is overcast, its snowing lightly.

 

Temperature: 31°F

Dew point: 30°F

Humidity: 100%

Pressure: 1031.0 mb

Wind: ENE 10 mph

 

 



 So here is the surface map, there are plenty of high pressure systems to the west, a line of low pressure systems in east, forming a squall line over our area. Unfortunately due to that continental polar air mass previously discussed, we have colder temperatures creating snow in that line. The wind was coming from the north earlier, causing the bottom of the line to move east, yet it moved more slowly in our region, creating a lingering snow storm.

 Here you can see the difference in temperatures across the United States. It's crazy that in a days drive, you can be in nice warm weather!

 Here is the 500 mb map, I am not really sure what to make of that blob over North Dakota... my rendition is below. my guess is that it is associated with the high pressure system, and that by the end of the week, or possibly next week we will have more favorable weather again as this current system and its remnants move out and then high pressure systems move in.

I thought the blob looked like an octopus... so here you go. :)

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.