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National Oceanic and Atmospheric Administration Climate of 1999 September-November in Historical Perspective National Climatic Data Center, 15 December 1999

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Climate of 1999: September-November Overview Detailed Climate Perspectives . . . Global Analysis Global Regional Analyses U.S. National Analysis U.S. Regional/Statewide Analyses Extreme Events 1999 Monthly Reports

The global mean temperature for September through November, 1999, was well above the long-term average, based on preliminary data. In fact, for nearly season since the late 1970's , the global mean combined land and ocean temperature has been above the long-term (1880-1998) mean. Even so, this 3-month global mean temperature was considerably cooler than the record warmth experienced in September through November of 1997, largely due to cooler sea surface temperatures this year. See the Global Analysis and Global Regional Analysis pages for more details on the global climate.

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For the three-month period September through November 1999, the mean temperature for the contiguous U.S. was well above the long-term average, based upon preliminary data. The line graph shows departures from the 1895-1998 mean. The smoothed curved line is a nine-point binomial filter which shows the decadal-scale variations.

Based on preliminary data, average total precipitation for the contiguous U.S. for the period September through November 1999 was well below the long-term average, falling below the long-term average for the first time in 8 years. This line graph shows departures from the 1895-1998 mean. The smoothed curved line is a nine-point binomial filter which shows the decadal-scale variations. See the U.S. National Analysis and U.S. Regional / Statewide Analyses pages for more details on the U.S. climate.

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Extreme Events During the September-November 1999 period, several areas of the world experienced extremes in climate. The worst disaster in terms of human misery was the two typhoons that struck Eastern India and Bangladesh in October. New reports estimate that 10,000 people died in that tragedy. Elsewhere around the globe, drought, heatwaves and floods took their toll on various areas. More complete information is available under the Climate Watch September, October, and November 1999. For all climate questions other than questions concerning this report, please contact the National Climatic Data Center's Climate Services Division: Climate Services Division NOAA/National Climatic Data Center 151 Patton Avenue, Room 120 Asheville, NC 28801-5001 fax: 828-271-4876 phone: 828-271-4800 email: ncdc.orders@noaa.gov For questions about this report, please contact: David Easterling NOAA/National Climatic Data Center 151 Patton Avenue Asheville, NC 28801-5001 fax: 828-271-4675 email: david.easterling@noaa.gov -or- Mike Changery NOAA/National Climatic Data Center 151 Patton Avenue Asheville, NC 28801-5001 fax: 828-271-4750 email: mchangry@ncdc.noaa.gov Top of Page NCDC / Climate Monitoring / Climate of 1999 / Help