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HOME > Monitoring & Data > U.S. Climate Data > ENSO Impacts > U.S. Temp. & Precipitation
 
 
 
 
 

Number of days per season with precipitation greater than 0.50 inches Mean number of days per season (November - March 1948 through 2006) in which precipitation exceeded 0.50 inches for Neutral years (top). Lower left map is the difference in this quantity between El Niņo years and Neutral years. Lower right map is the difference in this quantity between La Niņa years and Neutral years. Data are analyzed on a 2.5o latitude x 2.5o longitude grid. Note that the Neutral year composite includes weak ENSO years.


Mean seasonal snowfall in inches Mean seasonal snowfall (November - March 1948 through 2006) in inches for Neutral years (top). Lower left map is the difference in snowfall between El Niņo years and Neutral years. Lower right map is the difference in snowfall between La Niņa years and Neutral years. Data are analyzed on a 2.5o latitude x 2.5o longitude grid. Note that the Neutral year composite includes weak ENSO years.


Number of days per season with 2 inch (or greater) daily snowfalls Mean number of days per season (November - March 1948 through 2006) with 2 inch daily snowfalls (or greater) for Neutral years (top). Difference in number of days between Neutral years and moderate to strong El Niņo years (lower left). Lower right panel similar to lower left, except for La Niņa years. Data are analyzed on a 2.5o latitude x 2.5o longitude grid. Note that the Neutral year composite includes weak ENSO years.


Number of days per season with maximum daily temperature at least 5 degrees Celsius above the daily mean Mean number of days per season (December - February 1948 through 2006) in which maximum daily temperature is at least 5o C above the daily climatological mean value (top). Difference in number of days between Neutral years and moderate to strong El Niņo years (lower left). Lower right panel similar to lower left, except for La Niņa years. Data are analyzed on a 2.5o latitude x 2.5o longitude grid. Daily climatology (1948-1993) is a 7-day running mean. Note that the Neutral year composite includes weak ENSO years.


Mean number of days per season with maximum daily temperature at least 5 degrees Celsius below daily mean Mean number of days per season (December - February 1948 through 2006) in which maximum daily temperature is at least 5o C below the daily climatological mean value (top). Difference in number of days between Neutral years and moderate to strong El Niņo years (lower left). Lower right panel similar to lower left, except for La Niņa years. Data are analyzed on a 2.5o latitude x 2.5o longitude grid. Daily climatology (1948-1993) is a 7-day running mean to smooth out variations caused by the relatively short base period. Note that the Neutral year composite includes weak ENSO years.


Number of days per season with minimum daily temperature at least 5 degrees Celsius above the daily mean Mean number of days per season (December - February 1948 through 2006) in which minimum daily temperature is at least 5o C above the daily climatological mean value (top). Difference in number of days between Neutral years and moderate to strong El Niņo years (lower left). Lower right panel similar to lower left, except for La Niņa years. Data are analyzed on a 2.5o latitude x 2.5o longitude grid. Daily climatology (1948-1993) is a 7-day running mean. Note that the Neutral year composite includes weak ENSO years.


Mean number of days per season with minimum daily temperature at least 5 degrees Celsius below the daily mean Mean number of days per season (December - February 1948 through 2006) in which minimum daily temperature is at least 5o C below the daily climatological mean value (top). Difference in number of days between Neutral years and moderate to strong El Niņo years (lower left). Lower right panel similar to lower left, except for La Niņa years. Data are analyzed on a 2.5o latitude x 2.5o longitude grid. Daily climatology (1948-1993) is a 7-day running mean. Note that the Neutral year composite includes weak ENSO years.


Number of days per season with maximum daily temperature below freezing Mean number of days per season (December - February 1948 through 2006) in which maximum daily temperature is below freezing (top). Difference in number of days between Neutral years and moderate to strong El Niņo years (lower left). Lower right panel similar to lower left, except for La Niņa years. Data are analyzed on a 2.5o latitude x 2.5o longitude grid. Note that the Neutral year composite includes weak ENSO years.


Number of days per season with minimum daily temperature below freezing Mean number of days per season (December - February 1948 through 2006) in which minimum daily temperature is below freezing (top). Difference in number of days between Neutral years and moderate to strong El Niņo years (lower left). Lower right panel similar to lower left, except for La Niņa years. Data are analyzed on a 2.5o latitude x 2.5o longitude grid. Note that the Neutral year composite includes weak ENSO years.


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Climate Prediction Center
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Page Author: Climate Prediction Center Internet Team
Page last modified: January 24, 2005
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