Atmospheric dynamics Reference Libraries

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EL-Nino Update July 5 2012
2012-07-05 11:03:00

Say it’s not so, but we could be very well on the verge of entering into an EL-Nino cycle soon. How soon? The latest forecast issued by the Climate Prediction Center has upped the chances of seeing EL-Nino this year now at 61% with the favorable time period pointing towards the 3rd quarter (July-September).  What does this mean to you? Well it all depends on where you’re living as EL-Nino...

Polar Watch For Aug 29- Sept 4
2012-09-05 08:00:17

A look at the temps from the 4th show that another colder pocket of air is moving into the region. Aug 29: The max temps warmed to 1C, while the overnight lows dropped to 0C. Aug 30: A burst of colder air was over the polar cap as high temps only made it to -3C, and the overnight lows dropped to -6C. Aug 31: Brought a touch of warmer air back into the region as high temps rose back to 1C,...

Weather Pack For September 6 2012
2012-09-06 08:00:38

Today on Weather Pack we are going to examine the surface wind around a mature low pressure system, which means that the low pressure has an occluded front associated with it. Yellow Star: The forecasted surface winds would be out of the Northwest as the flow behind the low is counter-clockwise. Green Star: Anyone that is forecasting for the green star would be looking at the winds coming...

Weather Forecaster Guide Sioux City Iowa
2012-09-17 15:45:33

Many forecasters new and old run across certain things that just don’t get picked up in the weather models that we use to prepare our weather forecast. This is why I have created weather guides for anyone that is getting ready to or just wants to find out more about the weather in their area. (Here are a few forecaster guide tips to helping prepare a better weather forecast) Elevation:...

Winds Impacted By The Cycles Of ENSO
2012-09-03 16:44:02

When it comes to wind, more and more people are turning to it as alternative option for electricity. One has to wonder what kind of impacts would be created by the different cycles of ENSO. The above graph has been done for Boston MA. The month of choice was to run it for March of all three cycles. Normal Cycle: (When we are in between EL-Nino and La-Nina) winds averaged around 0-5mph 9% of...

Upper Air Map Identification for July 6 2012
2012-07-06 12:00:10

Looking at the upper air map for the entire region from Alaska to the Atlantic Ocean we can identify a few significant features. The first is the deep low height center over Alaska, this is telling us that at 30,000ft the air is rising upwards allowing for the surface low to still be gaining strength. Also if you look to the west of that closed low you will see what is referred to as a jet...

El-Nino Impacts For The Months Of January - March In
2012-09-03 15:50:59

Honolulu is located in the Pacific Ocean and has a mostly marine time climate. Honolulu has a pretty consistent temperature average from month to month. This is a look at the La-Nina impacts on the local area. January 2010: For the month of January it is typical to see average high temps in the 80’s while overnight lows drop into the 70’s. During the El-Nino event January temps were 60%...

Weather Terms
2012-07-17 22:12:23

Warm Air Advection: this is defined by the process of warm air flowing northward towards the colder air replacing it with warmer air. An example would be as follows. Advection is defined as the horizontal or vertical transportation of air. 8AM - South Dakota Temp 66F Winds Southwest 12mph. 8AM - Oklahoma Temp 82F Winds Southwest 20mph. Now at 1PM the warm air has moved in as the...

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...

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
  • A fool; a simpleton: a term of abuse common in Ireland and to a less extent in the Gaelic-speaking parts of Scotland.
This word is partly Irish in origin.