There have been many forecasts in the news in recent years predicting more and more extreme weather-related events in the US, but for 2013 that prediction has been way off the mark.
Whether you’re talking about tornadoes, wildfires, extreme heat or hurricanes, the good news is that weather-related disasters in the US are all way down this year compared to recent years and, in some cases, down to historically low levels.
To begin with, the number of tornadoes in the US this year is on pace to be the lowest total since 2000 and it may turn out to be the lowest total in several decades. The table below lists the number of tornadoes in the US for this year (through 10/17) and also for each year going back to 2000.
(Source: NOAA, http://www.spc.noaa.gov/climo/online/monthly/newm.html)
Year # of Tornadoes
Second, the number of wildfires across the US so far this year is on pace to be the lowest it has been in the past ten years and the acreage involved is at the second lowest level in that same time period (table below).
(Source: National Interagency Fire Center; http://www.nifc.gov/)
2013 Fires: 40,306 Acres: 4,152,390
2012 Fires: 67,774 Acres: 9,326,238
2011 Fires: 74,126 Acres: 8,711,367
2010 Fires: 62,471 Acres: 3,233,461
2009 Fires: 78,792 Acres: 5,921,786
2008 Fires: 80,094 Acres: 5,254,109
2007 Fires: 85,822 Acres: 9,321,326
2006 Fires: 96,358 Acres: 9,871,939
2005 Fires: 66,552 Acres: 8,686,753
2004 Fires: 63,608 Acres: 8,097,880
*2013 data through 10/16
In addition to wildfires, extreme heat is also way down across the US this year. In fact, the number of 100 degree days across the country during 2013 is not only down for this year, but it is perhaps going to turn out to be the lowest in about 100 years of records (chart below).
(Source: NOAA, USHCN reporting stations; through August)
The five summers with the highest number of 100 degree days across the US are as follows: 1936, 1934, 1954, 1980 and 1930. In addition to the vast reduction in 100 degree days across the US this year, the number of high temperature records (ie hi max and hi min records) is way down compared to a year ago with 22,965 records this year as compared with 56,885 at this same time last year.
(Source: NOAA, http://www.ncdc.noaa.gov/extremes/records/; through 10/17).
Finally, as far as hurricanes are concerned and keeping in mind that the season isn’t over yet, there have been only two hurricanes so far this year in the Atlantic Basin (Humberto and Ingrid) and they were both short-lived and weak category 1 storms.