The first of the land-based global temperature series, GISS is out for
April. At +0.73C, it was the warmest April in 131 years by a wide
margin. It follows on the heels of the two satellite series, which
both put April as second warmest in their respective series.

2010 has now had the warmest first 4 months of any year in the 131
GISS series and the period April 2009 - April 2010 is the warmest 12-
month period in recorded history by quite some margin; eclipsing both
calendar years of 1998 and 2005 and any other 12-month period.