I've been debating responding to this post ever since I saw it early yesterday morning. My original intention was to make a blog post and direct my response there. I may still do that...
However, why should I give any credence to Mr. Bastardi's winter weather forecast when his original forecast was incorrect? (http://www.accuweather.com/blogs/news/story/40340/accuweathercom-winter-forecast-1.asp)
The south has been very cold, snow fall across a large portion of the south is well above normal, with prospects for more snow in the coming days (and probably weeks) as we are locked into a strongly negative AO and positive PNA (as is reflected in the latest forecast graphics from Mr. Bastardi).
You rail about climate scientists making long range forecasts and tout the fact that we struggle with the short-term. (Several recent posts illustrate that fact, especially the post sparking our previous discussion and one from earlier today (22 January). So why now are you advocating someone's seasonal forecast? Especially when his original forecast was incorrect.
This is a fair comment and I welcome it. I'll answer in two parts..
BASTARDI. I have seen some rather amazing forecasts from Joe verify, even some that were completely different than the NWS's. You are correct that his initial 2010-11 winter forecast was way off. While I believe Joe is a better than average long range forecaster, I do not believe that he has a great deal of "skill" as defined in meteorology.
CLIMATE FORECASTS. I have not seen Joe attempt to make forecasts more than six months out. As mentioned above, there isn't a great deal of skill there. Logically, if we cannot make consistent forecasts at six months, there is no reason to believe we can do so at 60 years.
But, go back to the 2004 IPCC report. They issued a forecast out to 2100 with 95% error bars. Much of the time since that report was issued, temperatures are outside the confidence interval on the low side.
But, if we look at the high-profile climate forecasts (west side of Manhattan under water by 2000, no more snow for UK, etc., etc.), they have been spectacular failures.
To me, this is sufficient to nullify the hypothesis that we can forecast the climate decades in advance.
2am While the risk of tornadoes may continue during the night, this will have to end my coverage. Note the risk of tornadoes farther east later today. 1:35am Wednesday: Tornado watch will likely be issued for the outlined area, including the Kansas City Metro. Make sure you have a way to receive tornado warnings the rest of the night. 11:55p Tuesday: New tornado watch has just been issued for most south central (including Wichita), southeast and east central Kansas. This watch is in effect until 7am Wednesday. This is the overnight tornado threat we've been talking about. I am now providing additional updates on Twitter/X @usweatherexpert . --- original posting (still valid) --- Now until 7a Wednesday The tornado risk has decreased in Oklahoma south of I-40. 7am to Noon Wednesday For Wednesday morning, there is a significant chance of tornadoes in western and, especially, northern Missouri. It is unusual to have tornadoes during the morning....
--- This Forecast Has Been Updated --- You Will Find the New Forecast Here After a quick look at the new data this evening, I believe the forecast is still good. There may be light amounts of freezing rain in north central Texas as far south as Waco. It will not be enough to cause power outages but -- if it occurs -- it will make roads very slick. The snow amount forecasts haven't changed. I believe DFW will receive 1-3" with heavier amounts as you go northeast. I-30 will become a mess for its entire route. --- original forecast still valid --- Here are the latest NWS winter weather warnings and watches as of 3:15pm Note: the white "hole" in southwest Texas will be filled in with a purple winter weather advisory for 1-3 inches of snow. Color codes: Pink = winter storm warning Dark green = winter storm watch Purple = winter weather advisory Bright green = ongoing flood warning Dark blue and bright turquoise = freeze warnings. As expected, t...
A major windstorm is forecast for Oklahoma and Texas Sunday. This has the potential to cause widespread power failures. Please prepare now. More information below. 5:35pm: Particularly Dangerous Situation watch due to wind gusts forecast to reach 105 mph and with hail 5" in diameter. Tornadoes also possible. If you live in a mobile home, now is the time to determine your sheltering situation. I urge you to shelter before warnings are issued (spend the evening with friends or family). Power outages are likely. A mobile vehicle from the National Severe Storms Laboratory has already measured a gust of 90 mph! 3:05pm Update: Computer models have consistently increased their forecasts of peak wind gusts pertaining to north central Texas this evening. Wind gusts of 110 mph are possible. If correct, widespread power outages are likely. First Watch of the Day Pertaining to the Derecho In addition to the threat of tornadoes, wind gusts of 80...
Mike,
ReplyDeleteI've been debating responding to this post ever since I saw it early yesterday morning. My original intention was to make a blog post and direct my response there. I may still do that...
However, why should I give any credence to Mr. Bastardi's winter weather forecast when his original forecast was incorrect? (http://www.accuweather.com/blogs/news/story/40340/accuweathercom-winter-forecast-1.asp)
The south has been very cold, snow fall across a large portion of the south is well above normal, with prospects for more snow in the coming days (and probably weeks) as we are locked into a strongly negative AO and positive PNA (as is reflected in the latest forecast graphics from Mr. Bastardi).
You rail about climate scientists making long range forecasts and tout the fact that we struggle with the short-term. (Several recent posts illustrate that fact, especially the post sparking our previous discussion and one from earlier today (22 January). So why now are you advocating someone's seasonal forecast? Especially when his original forecast was incorrect.
Patrick,
ReplyDeleteThis is a fair comment and I welcome it. I'll answer in two parts..
BASTARDI. I have seen some rather amazing forecasts from Joe verify, even some that were completely different than the NWS's. You are correct that his initial 2010-11 winter forecast was way off. While I believe Joe is a better than average long range forecaster, I do not believe that he has a great deal of "skill" as defined in meteorology.
CLIMATE FORECASTS. I have not seen Joe attempt to make forecasts more than six months out. As mentioned above, there isn't a great deal of skill there. Logically, if we cannot make consistent forecasts at six months, there is no reason to believe we can do so at 60 years.
But, go back to the 2004 IPCC report. They issued a forecast out to 2100 with 95% error bars. Much of the time since that report was issued, temperatures are outside the confidence interval on the low side.
But, if we look at the high-profile climate forecasts (west side of Manhattan under water by 2000, no more snow for UK, etc., etc.), they have been spectacular failures.
To me, this is sufficient to nullify the hypothesis that we can forecast the climate decades in advance.
Mike