Archive

Archive for March, 2008

Possible tornado in downtown Atlanta Friday / More tornadoes Saturday

March 17th, 2008 No comments

I would have posted this earlier, but I was attending the Northeast Storm conference, where I was presenting my Oklahoma Research for the last time.

Friday night around 1:40Z, a possible tornado touched down in the downtown Atlanta area. It caused some damage to the Georgia Dome and the CNN building (Source: SPC).

Looking at the 00Z sounding for Atlanta (KFFC) to the left, there appears to be little support for tornadoes. The surface based CAPE is low, and there is very limited low level wind shear. However, the helicity and thermodynamic values (SW, LI, SI) were strong enough to possibly produce a tornado in the downtown area.
Saturday however was the bigger event day, as 41 tornadoes and 75 hail events were reported in the southeastern part of the United States.

Pollution a new sin / Ozone standards tightened by EPA

March 13th, 2008 No comments

One of the classes I am taking this semester is Air Quality. It is a fairly interesting class, except for the fact it is at 8am. With the whole “go green” standard going on across the country, pollution has become a big factor in forecasting. While the National Weather Service only provides “guidance” for ozone and smoke at this time, they hope to forecast for both ozone and particulate matter in the upcoming years.

Another orginization trying to “go green” is the catholic church. A couple of days ago, the vatican’s second highest ranked officer, Archbishop Gianfranco Girotti, was asked about what new concepts could be sinful, and one of the items he mentioned was environmental pollution (source). Very interesting I have to say. While the EPA has definitely helped to lower pollutants in the atmosphere since the Clean Air Act, we can do better.

And do better we shall, yesterday the EPA reduced the NAAQS of ozone (8-hour standard) from 80 parts per billion to 75. While 5 ppb doesn’t seem a lot, it is geared to better protect the health of unsensitive groups. The setback is that it would cost about $7.6 billion to $8.5 billion to help maintain this standard each year. Not only that, the amount of counties that are in non-attainment (meaning that they have gone over the standard for ozone) would quadruple. (source)

Of course the long term effects should outweigh the costs, but don’t tell that to the industrial power plants and politics in D.C.

The Random Front

March 2nd, 2008 No comments
Source: HPC

If you partook in Plymouth’s Current Weather class last year with me, then you would know my rants about the Random Front. Once in a while, when we would look at the surface map for the Contiguous United States, and there would be a very small front that was placed, and it didn’t look legitimate. Now granted sometimes they were real due to strange processes, but most of the time they were bogus.

Well I stumbled across one today as I looked at the 18Z surface map. There is a very small warm front over Kentucky/West Virginia. It appears that the red line is dashed, meaning that it is either a developing or dying front. But still what the heck. Usually meteorologists associate fronts with 3 things:

  1. Temperature change
  2. Pressure trough
  3. Wind Shift

Well the front is between two isobars, so we can’t determine a trough, and the winds are primarily south. However there is a +10 degree shift with temps in the low 60′s south of the front. But why didn’t they just adjust the warm front to the west to take care of that?

Gotta love the random front, you won’t see that on the Weather Channel.