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As noted by the Wyoming State Climatologist (Jan Curtis), March 2005 temperatures ranged from above normal in most of Wyoming to slightly below normal in the extreme western and southcentral regions. Precipitation was general well below normal over much of the state except for some spotty areas in east and west central Wyoming. A detailed report for March is available at:
Several parts of the state had declining SWSI values from February to March. The SWSI (Surface Water Supply Index) integrates snowpack, reservoir storage, streamflow, and precipitation at high elevation as a measure of surface water status.
The prolonged dryness that Wyoming has been experiencing is having an impact on vegetation. Prairie grassland yields forecast by the State Climatologist through the end of June indicate that there will be below normal to nil grasses for livestock grazing throughout much of the state. The growth season for native cool grasses is mid-March to mid-May.
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NCDC /
Clim. Monitoring /
Climate-2005 /
Mar /
U.S. Regional Drought /
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