heathpack
Mouseketeer
- Joined
- Jan 9, 2003
- Messages
- 251
Hi all,
I live in Hollywood and cannot comment directly on anything going on down in the Disneyland area. Likewise, I am not a weather expert in any way.
However, with those caveats in mind, it is worth mentioning to visitors to the area that the current fires are largely caused by a very specific weather phenomenom called "Santa Ana winds." These occur in Southern California in fall and winter and have something to do with a reversal of the normal pattern of winds. Normally, LA receives cool(ish) moist air blowing west from the Pacific ocean. The Santa Ana winds are a reversal of this pattern with hot, very dry air blowing in from the Northeast deserts. I don't recall exactly why this happens, but the winds blow at very high speed, are very gusty and the hot dry windy weather pattern seriously contributes to fire threat. Any fire that starts is quickly whipped into a conflagration by the Santa Ana winds and things can get quickly out of control. Fires are extremely hard to fight in these conditions. Helicopters can't fly, fires jump fire lines, direction of spread is very erratic..
It may be helpful to know that the Santa Ana wind phenomenom tends to only occur for a few days at a time. The current pattern started Sunday and is expected to end Tuesday or Wednesday, which should greatly lessen fire risk. Of course, it may take some time to get the current fires under control. But if you are visiting next weekend and fires get under control, there will not be any greater than usual risk of fire in So Cal. Yes, it has been very dry here, but as I understand it, this is a smaller part of the problem in the past few days.
Hopefully this helps folks to understand what's been going on. Anyone out there better versed in weather, please pipe in...
Heathpack
I live in Hollywood and cannot comment directly on anything going on down in the Disneyland area. Likewise, I am not a weather expert in any way.
However, with those caveats in mind, it is worth mentioning to visitors to the area that the current fires are largely caused by a very specific weather phenomenom called "Santa Ana winds." These occur in Southern California in fall and winter and have something to do with a reversal of the normal pattern of winds. Normally, LA receives cool(ish) moist air blowing west from the Pacific ocean. The Santa Ana winds are a reversal of this pattern with hot, very dry air blowing in from the Northeast deserts. I don't recall exactly why this happens, but the winds blow at very high speed, are very gusty and the hot dry windy weather pattern seriously contributes to fire threat. Any fire that starts is quickly whipped into a conflagration by the Santa Ana winds and things can get quickly out of control. Fires are extremely hard to fight in these conditions. Helicopters can't fly, fires jump fire lines, direction of spread is very erratic..
It may be helpful to know that the Santa Ana wind phenomenom tends to only occur for a few days at a time. The current pattern started Sunday and is expected to end Tuesday or Wednesday, which should greatly lessen fire risk. Of course, it may take some time to get the current fires under control. But if you are visiting next weekend and fires get under control, there will not be any greater than usual risk of fire in So Cal. Yes, it has been very dry here, but as I understand it, this is a smaller part of the problem in the past few days.
Hopefully this helps folks to understand what's been going on. Anyone out there better versed in weather, please pipe in...
Heathpack