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Upper Air Weather Map Features for July 5 2012
2012-07-05 12:00:16

This upper air map is from July 5, 2012 and it’s from the 500mb level which is roughly about 18,000ft above the ground. Looking at the map the first thing to notice is the blue 5880 line which runs from New Mexico northward into Wyoming and then eastward to the Great Lakes and then dips southward back into the Mid-Atlantic Region. This line is showing us the outline of the upper air ridge...

Weather Terms
2012-07-30 09:39:02

Coastal Upwelling- this is defined as the moving of water from the deeper oceans upwards to the surface of the ocean very commonly found along our cold ocean currents, which are found along the West Coast of the United States and off the Peru coast. Coastal Sinking- this is defined as the warm waters moving in from the east and hitting the coastline and slowly filtering down towards the...

The Story And News Behind This Past Weekends Derecho June
2012-07-02 08:00:47

This past weekend we saw a massive line of storms impact large areas of the country from Iowa to Maryland in what is known as a Derecho. What is a Derecho? The best way to define this weather feature is by describing a large mass of t-storms combining together to form an elongated region of storms which can create intense surface winds that can blow in excess of 60mph reaching well into the 100...

Feature on the Surface Map
2012-07-17 22:30:03

Tropical Storm Debbie on a surface chart. It is noted that just off the coast of Northern Florida a 999 surface pressure is found indicating to a meteorologist that an area of Lower pressure is arriving. In this case it’s Tropical Storm Debbie. The red lines indicate lines of equal pressure. Meteorologists label them in 4mb increments. So looking at the map it’s noted that there is a...

Tornado Impacts During The Different Phases Of Weather
2012-07-17 22:06:23

Taking a look at Austin and within 50miles of the local area we can see the impacts that different phases of weather have on the tornado statistics of the region. 2000 was a La-Nina phase and it was a fairly strong phase, which lead to the 12 tornadoes within 50miles of Austin and also one EF-2 was part of the stats indicating that strong tornadoes are possible during a La-Nina in this...

Upper Air Map Identification
2012-07-17 21:58:59

Upper Air analysis is another important part of being a meteorologist and understanding how to read these maps is very important to our daily job. The above image is a 300mb chart that means this is the winds and temps at about 30,000ft above the ground. The first feature is over Western California. The darker blue shading is a jet maximum. What this means is that the winds are very strong...

Weather Map Identification
2012-07-17 21:51:43

It is very important to understand what you are looking at when working with weather maps. In the image above we are looking at surface wind barbs. Surface wind barbs help us to identify which direction the wind is blowing and also the speed of the wind. If we look in the Northern Gulf of Mexico just to the south of Mississippi we see a wind barb in blue. This wind barb is from the East and...

The Sierra Nevada Mountain Range
2012-07-17 13:48:38

The Sierra Nevada Mountains located along the Eastern portion of California and the Western Portion of Nevada have a huge impact on the weather in this region. The first is the Sana Anna winds. These are very warm winds that ascend from the mountains westward back into the basins of California in such places like Los Angeles. These are very dry winds that can heat the temps up into the...

Typhoon Guchols Impact In Japan
2012-06-20 08:07:11

Left Image Credit: Joshua Kelly - Right Image Credit: NASA Typhoon Guchol, these past few days, had made it to Super Typhoon strength which would be the same as saying that it was a CAT 3 or larger storm. It quickly raced up towards Okinawa Japan leaving its first imprints with reports of winds near 60-70mph with higher gusts. It then moved up northward into Shikoku Japan where it made...

Surface Weather Map Features
2012-07-16 14:20:04

Looking at the weather map above we can see that we have three and four digit numbers on the map. These numbers are known as Sea Level Pressure. They are recorded in MB. Looking at the Northern part of South Dakota we see a number at 995mb while over parts of Maine we see the number closer to 1020mb. So we would say that high pressure is over Maine, while low pressure is over the Dakota’s...

Word of the Day
attercop
  • A spider.
  • Figuratively, a peevish, testy, ill-natured person.
'Attercop' comes from the Old English 'atorcoppe,' where 'atter' means 'poison, venom' and‎ 'cop' means 'spider.' 'Coppa' is a derivative of 'cop,' top, summit, round head, or 'copp,' cup, vessel, which refers to 'the supposed venomous properties of spiders,' says the OED. 'Copp' is still found in the word 'cobweb.'
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