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Click here for graphic showing U.S. Department of Commerce logo and link to site Climate of 2004 - December
Arizona Drought

National Climatic Data Center, 13 January 2005

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Above-normal precipitation for the last four months, averaged across the state, has brought significant relief from the drought. This year marked the first time in six years that Arizona had an above-average annual statewide precipitation. However, long-term moisture deficits remained, with groundwater and reservoir levels still well below seasonal norms.

As noted by the University of Arizona's Institute for the Study of Planet Earth (Richard Brandt):

  • Arizona-Nevada "money-for-water" deal -- Arizona and Nevada officials approved a deal in which Nevada may take up to 1.25 million acre-feet of Colorado River water from the Arizona allocation over the next 15 years. In exchange Nevada will pay Arizona $330 million (in installments) and will support Arizona's attempt to have senior priority restored to the water in the Central Arizona Project.
  • Sky Harbor International Airport (Phoenix) received 0.72 inch of rain on December 4-6. The mean December rainfall for Phoenix is 0.92 inch.
  • From the Tucson National Weather Service Office: The mean annual high temperature (82.3 °F) in Tucson was below average for only the 5th time since 1980. Only 7.62 inches of precipitation was measured at Tucson International Airport, making 2004 the 11th driest year on record. 2001-2004 was the 3rd driest four-year period on record.
Drought-related precipitation information for Arizona stations can be found at the following web site of the Phoenix National Weather Service office:

Statewide Precipitation Ranks
for Arizona , 2004
Period Rank
Dec 24th wettest
( 87th driest)
Nov-Dec 11th wettest
(100th driest)
Oct-Dec 4th wettest
(107th driest)
Sep-Dec 7th wettest
(104th driest)
Aug-Dec 9th wettest
(102nd driest)
Jul-Dec 15th wettest
( 96th driest)
Jun-Dec 16th wettest
( 95th driest)
May-Dec 23rd wettest
( 88th driest)
Apr-Dec 18th wettest
( 93rd driest)
Mar-Dec 20th wettest
( 91st driest)
Feb-Dec 19th wettest
( 92nd driest)
Jan-Dec 23rd wettest
( 88th driest)
Click here for graphic showing  precipitation departures, January 1998 - present
larger image

Click here for graphic showing  Palmer Z Index, January 1998 - present
larger image

Click here for graphic showing  precipitation, December  1895-2004
larger image
Click here for graphic showing  Palmer Hydrological Drought Index, January 1900 - December  2004
larger image


Graphic showing NOAA logo NCDC / Clim. Monitoring / Climate-2004 / Dec / U.S. Regional Drought / Search / Help

http://lwf.ncdc.noaa.gov/oa/climate/research/2004/dec/st002dv00pcp200412.html
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Last Updated Tuesday, 29-Nov-2005 14:04:33 EST by Richard.Heim@noaa.gov
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