38 F. average high for November 20.
27 F. high temperature on November 20, 2011.
24 F. average low for November 20 at KMSP.
-11 F. low temperature on November 21, 2011.
Having a mild day in the 50's on Thanksgiving Day is relatively rare, looking at the historical record back to 1872. A maximum of 50 or more has happened only ten times in 140 years, or about once every 14 years or so. The warmest Thanksgiving Day is a tie of 62 degrees set in 1914 and 1922. The mildest recent Thanksgiving Day is 59 degrees on November 24, 2011. This was the fourth warmest Thanksgiving back to 1872 for the Twin Cities.
On the other side of the spectrum, it is common to have a high temperature below 32. The average Thanksgiving Day temperature is right around freezing. What about extremely cold Thanksgivings? Looking at the past 140 years, It is a little more likely to have a minimum at or below zero on Thanksgiving Day, as it is to have a maximum of 50 or above. Below-zero lows have occurred twelve times in the past 140 years. The coldest Thanksgiving Day minimum temperature was 18 degrees below zero on November 25, 1880. The coldest high temperature was one below zero on November 28, 1872. The last time it was below zero on the morning of Thanksgiving was in 1985, with eight below zero.
Measurable snow fell on 27 of the past Thanksgivings back to 1884, about every five years or so. The most snow that fell on Thanksgiving was five inches in 1970. The last time there was measurable snow on Thanksgiving was in 2007 with .2 (two tenths of an inch) of snow. Historically, about one in three Thanksgivings have at least one inch of snow on the ground. The deepest snow pack is a tie with 1921 and 1983, both with 10 inches on the ground by Turkey Day."
* the latest NOAA U.S. Drought Monitor is here.
Photo credit above: "A Coast Guard boat patrols in the foreground as a barge makes its way down the Mississippi River Friday, Nov. 16, 2012, in St. Louis. A top Corps of Engineers official has ordered the release of water from an upper Mississippi River reservoir in an effort to avoid closure of the river at St. Louis to barge traffic due to low water levels caused by drought." (AP Photo/Jeff Roberson)
Photo credit above: "Technology such as smart meters and micro-grids can help the vulnerable U.S. electric grid weather extreme storms." Image: Flickr/Christopher Schoenbohm
Photo credit above: "One of the largest piles of storm debris at the Jersey shore is shown in this Nov. 15, 2012 photo in Long Branch N.J. Superstorm Sandy created tons of debris that towns in New York and New Jersey are still struggling to dispose of weeks later. Three weeks in, the round-the clock effort to remove storm rubble has strained the resources of sanitation departments and landfill operators, and caused heartaches and headaches for thousands of families." (AP Photo/Wayne Parry)
Photo credit above: Andrew Quilty / Oculi for Time.
Graphic above courtesy of SPC, NOAA's Storm Prediction Center.
Paul's Conservation Minnesota Outlook for the Twin Cities and all of Minnesota:
Photo credit above: " ."
- Extreme heat waves, that without global warming would be expected to occur once in several hundred years, will be experienced during almost all summer months in many regions. The effects would not be evenly distributed. The largest warming would be exptected to occur over land and range from 4° C to 10° C. Increases of 6° C or more in average monthly summer temperatures would be expected in the Mediterranean, North Africa, Middle East and parts of the United States.
- Sea level-rise by 0.5 to 1 meter by 2100 is likely, with higher levels also possible. Some of the most highly vulnerable cities are located in Mozambique, Madagascar, Mexico, Venezuela, India, Bangladesh, Indonesia, the Philippines and Vietnam.