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


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

National Climatic Data Center, 15 April 2004

Click here for graphic showing NOAA logo and link to site

A possible contributing factor to the severity of the multi-year drought in the West is a longer-term trend to warmer winters and springs and earlier starts to the spring snowmelt season. Observational evidence indicates that on average spring snowmelt now begins weeks earlier than it did only 50 years ago in states such as Washington, Oregon and Montana. The earlier snowmelt dates are also occurring in many areas where the average seasonal snowfall has also decreased. The end result is less runoff into streams and reservoirs further straining water resources. These issues were recently discussed by Dr. Kelly Redmond of the Western Regional Climate Center and Dr. Steve Running of the University of Montana's Numerical Terradynamic Simulation Group in an April 8 issue of the Billings (Montana) Gazette (http://www.billingsgazette.com/index.php?id=1&display=rednews/2004/04/08/build/state/25-climate-change.inc).

Statewide Precipitation Ranks
for Montana , 2003-2004
Period Rank
Mar 15th driest
Feb-Mar 22nd driest
Jan-Mar 38th driest
Dec-Mar 49th driest
Nov-Mar 43rd driest
Oct-Mar 48th driest
Sep-Mar 36th driest
Aug-Mar 26th driest
Jul-Mar 6th driest
Jun-Mar 8th driest
May-Mar 11th driest
Apr-Mar 15th 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, March     1895-2004
larger image
Click here for graphic showing  Palmer Hydrological Drought Index, January 1900 - March     2004
larger image


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

http://lwf.ncdc.noaa.gov/oa/climate/research/2004/mar/st024dv00pcp200403.html
Downloaded Wednesday, 09-Jul-2008 04:28:30 EDT
Last Updated Tuesday, 29-Nov-2005 14:04:59 EST by Richard.Heim@noaa.gov
Please see the NCDC Contact Page if you have questions or comments.