The global temperature for the first 10 months of 2010 is in a dead heat with 1998 for the warmest Jan. 1-Oct. 31 period ever, according to government data going back to 1880.
The combined land-sea surface temperatures for both years came in at 58.53, the National Climate Data Center reported this afternoon. Last month ended up being the eighth-warmest October ever.
In both years, the global temperatures received a boost from anomalous warming in the tropical Pacific, or El Nino.
In both years, El Nino yielded to its opposite, a La Nina cooling. However, this La Nina came on a little stronger and looks to out-do its 1998 counterpart.