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October 16, 2007

Severe weather in autumn?

Why not! While it’s true that we think of severe weather as a spring or summertime event, there is a secondary maximum in severe weather episodes that occurs in the fall. The reason for this is exactly the same as what helps create severe weather in the spring.

Severe weather episodes, and by that I mean severe outbreaks of more than just isolated severe storm development, migrate. Late in the winter and early spring, severe weather can usually be expected along the Gulf Coast. By mid to late spring we find severe storm outbreaks here in the Ohio Valley by summer the greatest chance for organized severe storms will be found across the northern Plains and Great Lakes region of the country. Why?

What happens during the spring and early summer? The jet stream moves northward, cold air retreats back closer to the Arctic region and warm and humid air moves into the void. The location of the jet stream, the warm and cold air figures into where we’re likely to find severe weather. What happens in the fall? The jet stream moves to the south, cold air returns to the Midwest and the warm and humid air retreats to the Gulf Coast. It’s what happens in the spring only in reverse but the dynamics are there for severe weather both in the spring and fall.

And so it is that we can be and normally are faced with some severe thunderstorms and even tornadoes in October and November. Never let you guard down. We won’t either.



Comments

Thank you all for your comments posted below. While I don't agree with everything you mention, I appreciate your time and thought that went into it.

Let me address George's question about the tornado ratings first. I think you have the right to contact the National Weather Service and express your concerns. There business office number is 502-969-8842. Good luck.

Now to both Martie Rose and "Frustrated" regarding severe weather coverage on the night of Oct. 18. Sorry for the delay in getting back to you but I’m still trying to catch up after my fall break last week.

First, I do appreciate your thoughts and sentiments regarding extended, severe weather coverage. Since we started doing this in the early 90’s, I have heard countless complaints from friends, foes and family. However, our policy then is still the same now and is not likely to change any time soon.

Here is our policy. When a tornado warning is in effect anywhere in our viewing area, we consider that a life threatening situation and will remain on the air until the threat is over or the warning expires. We chose to do it this way over doing frequent updates for this reason; a tornado can travel at speeds of 30 to 40 mph and can cover a lot of ground between updates. Crawls at the bottom of the screen are good for only the first few minutes of a tornadic situation then their information becomes old. Old information in a rapidly changing event such as tornadoes can be deadly. I also believe that the other stations were doing just as much coverage as we were.

Here is our viewing area. We cover 33 counties in southern Indiana and Kentucky ranging from Lawrence County, Indiana to Adair County in Kentucky. We treat all counties equally. A tornado warning in Adair County is just as important to those people as a tornado warning for your county is to you. So you could be sitting at home under a clear sky while someone else in our area is facing a life threatening situation. We will take care of that person facing the danger as we would you.

Here is what happens. A tornado warning normally lasts for 30 minutes. If we have just one warning, we’ll be on the air for 30 minutes. This happens mostly during the summer months. However, in the spring and fall we can get long-lived supercell thunderstorms that can travel across the entire length of our viewing area. That means as one warning expires a new one is issued and we remain on the air, sometimes as long as three and four hours.

Here’s my promise. I don’t think this policy will change as I mention before but we constantly review our processes and I will bring up your comments in future meetings.




Which one of your weather team Meteorologists was telling the weather late Saturday Night ? They were describing the tornado that had hit Bradfordsville, Ky. ,(Marion County ) during the time that I was watching . And they remarked that the weather service had stated that the tornado was an EF-0 rated with a wind speed of approximately 90 mph. Since then I've learned that the weather service has down graded the wind velocity of this particular storm to an 80 mph. wind . I truley don't agree with their decision ! For ,if-anything they should up-graded to being a higher level of velocity than what they are saying it was ! My guess would be that it was probably more in the area of being an EF-1 type Tornado with a wind velocity of 100 mph. ! The men who came on Saturday ,Oct.20 th. to assess the type of tornado that had hit this community were really tired already from being in Clark Co. ,In. And then arriving here toward the middle of the afternoon and then after being here they were still going to Horse Cave ,Ky. They were still going to Louisville following their journey from Horse Cave . So I don't think that they were up-to-par to make a clear evaluation of what type of storm had hit this area ? They were just to tired and raced with time to completely make a good analysis from the data that they had gather here of the storm ! Further more they didn't take enough time to get the whole picture of damage that was here . Another thing that may have prevented them from obtaining a real good assertion of the size and magnitude of this storm. Was that 65% or more of the damaged trees and debri had already been cleared away by the time they had arrived ! And too they didn't take pictures of areas that showed the devastational impact that was visible on a lot of trees here ! So I really feel that by leaving out some real hard pieces of evidence they neglected to make a correct evaluation ! "Thank-You!" Sincerely ; George Edelen,Jr.




I think the weather alert comsumed too much of last night's programing. Hour after hour it was a frightening report. A scroll across, beep or "break in" would have been helpful.




I, as many of us, have waited all week to watch "Grey's Anatomy". Why could you not just run your news at the bottom like most of the other channels? I bet your ratings went down while you were on....


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