NCEI added Alaska climate divisions to its nClimDiv dataset on Friday, March 6, 2015, coincident with the release of the February 2015 monthly monitoring report. For more information on this data, please visit the Alaska Climate Divisions FAQ.
- Based on the Palmer Drought Index,
severe to extreme drought affected about 8 percent of
the contiguous United States as of the end of January 2007, a
decrease of about 3 percent
compared to last month. By contrast, about 10 percent of the
contiguous U.S. fell in the severely to extremely wet
- About 20 percent of the
contiguous U.S. fell in the
moderate to extreme drought categories (based on the
Palmer Drought Index) at the end of January.
- On a broad scale, the previous two decades (1980s and 1990s)
were characterized by unusual wetness with short periods of
extensive droughts, whereas the 1930s and 1950s were characterized
by prolonged periods of extensive droughts with little wetness
to extreme drought,
severe to extreme drought).
- A file containing the national monthly percent area severely
dry and wet from 1900 to present is available for the severe to extreme and moderate to extreme categories.
- Historical temperature, precipitation, and Palmer drought data
from 1895 to present for climate divisions, states, and regions in
the contiguous U.S. are available at the Climate Division:
Temperature-Precipitation-Drought Data page in files having
names that start with "drd964x" and ending with "txt" (without the
Detailed Drought Discussion
|At the end of January
drought continued to be concentrated in Texas and Oklahoma, the
northwestern Plains, northern Minnesota and Florida. Drought and
abnormal dryness spread across the Southwest into northern
California and Nevada (January 30
Drought Monitor). In the drought areas, soil
moisture was low, vegetative
health was fair, and streamflow
||In north central Texas
and in central Florida, mandatory or voluntary water restrictions
were in place in several municipalities. Hungry horses in Alaska,
Idaho and the Dakotas received help from the U.S. Humane Society,
and hay shortages were noted in many states. Lack of forage
affected elk migration patterns in Colorado and decreased the deer
population in Wyoming. Continuing drought affected the 2007 wheat
crop in northern Oklahoma. The panfish population in Georgia
declined due to drought; substantial rains are needed for the fish
to recover. A positive impact of drought occurred in Minnesota when
a community saved money because spraying mosquitoes was not needed
due to a lack of water sources in which mosquitoes lay eggs.
Impacts in drought-stricken areas have been collected and
summarized by county at the National Drought Mitigation Center's
Drought Impact Reporter.
State/Regional/National Moisture Status
There is no January 2007 Paleoclimatic
Citing This Report
NOAA National Centers for Environmental Information, State of the Climate: Drought for January 2007, published online February 2007, retrieved on July 31, 2015 from http://www.ncdc.noaa.gov/sotc/drought/200701.