Since the printing of this atlas in March 2004, several new graphs and sections have been added to the on-line version. Below is a listing of these additions by Chapter:
Chapter 1
New section:
1.2.1 Ecoregions
Revisions:
Figure 1.3. Annual temperature and precipitation decadal changes for the US (trends since 1966)
Chapter 2
Table 2.A. Links have been updated
Chapter 3
Table 3.E. Correction:
1967-72 minimum temperature values were corrected
Figure 3.16. Correction:
bar graph colors reversed.
New Figures and Tables:
Figure 3.0. Wyoming Winter Extremes (temperatures >=ABS(2sd))
Table 3.1. Wyoming winter season average days when daily max and min
temps >=ABS(2sd)
Table 3.2. Wyoming winter cold & warm waves (>ABS(2sd))
Figure 3.7a. Wheat resistance to freeze injury
Revisions:
Figure 3.1. Annual average temperature in Wyoming (PRISM)
now contains the 1971-2000 normals.
Chapter 4:
New sections:
4.9 Precipitation as a Function of Wind Direction
4.10 Snow-Water Equivalent
New Figures:
Figure 4.21. Annual precipitation rose for Casper, Cheyenne, Lander, and Sheridan (1961-1990)
Figure 4.22. Annual precipitation as a function of wind direction for Casper, Cheyenne, Lander, and Sheridan (1961-1990)
Figure 4.23. Estimated SWE during the snow accumulation season in Wyoming
Revisions:
Figure 4.1. Annual precipitation at 2km resolution in Wyoming (PRISM)
now contains the 1971-2000 normals.
Figure 4.7. Lower elevation basin and sub-basin annual precipitation (percent) by month.
Figure 4.12. Statistics for Cheyenne showing 30-day precipitation probabilities graph
Chapter 5:
New sections:
5.4 Snowmaking
5.5 Snow Accumulation Season
New Figures:
5.9a. Density of wind-deposited snow as a function of depth
5.9.0. SWE during the snow accumulation season in Wyoming
Chapter 6
6.2 Drought History in Wyoming, added:
Figure 6.0. Wyoming Palmer Hydrological Drought Index (1900-2004)
showing the seven worst multi-year droughts in terms of this standard
measure.
New section:
6.6 Prescribed Burning
Figure 6.7. Bighorn National Forest fire danger criteria
Figure 6.8. Shoshone National Forest fire danger criteria
New Tables:
Table 6D. Summary of Hydrologic Classifications for the Powder-Tongue & NE River Basins or Drainages
Table 6E. Summary of Hydrologic Classifications for the Bighorn, Wind, & Madison Basins
Table 6F. Summary of Hydrologic Classifications for the Green River Basin
Table 6G. Summary of Hydrologic Classifications for the Snake and Salt River Basins
Revisions:
Figure 6.4. Wyoming net annual precipitation accumulation based on the
1895-2004 annual statewide average of 13.06 inches (Updated through 2004)
Figure 6.5. Wyoming Annual Precipitation (1895-2004) (Updated through 2004)
Chapter 7:
7.6.1 Ice Storms, added:
Figure 7.16a. Surface weather maps showing two major snowstorms that effected Wyoming
Figure 7.16b. Equivalent radial ice thickness (50-year mean recurrence interval)
Figure 7.16c. Equivalent radial ice thickness (100-year mean recurrence interval)
Revisions:
Figure 7.3. Wyoming thunderstorm gust events by county through 2003
Figure 7.10. Wyoming severe hail events by county for period of record through 2003
Figure 7.11. Annual Wyoming tornado count with longer term trend line (dashed) and shorter term trend line (solid) (1950-2004)
Figure 7.13. Wyoming tornado frequency by hour (1950-2004)
Figure 7.15. Wyoming tornadoes by county (1950-2003)
Figure 7.18. Perhaps the most famous Wyoming flood (1 August 1985, evening, 12 killed, 70 injured, $65 million in property damage)
Chapter 9:
New figure:
Figure 9.2. July 1961-1990 dew points
Revisions:
Figure 9.2. Annual 1961-1990 dew points, renumbered to Figure 9.2a.
Chapter 10:
10.2 Snow Fences, added:
Figure 10.4a. Both theory and experiments show that 80 percent of snow drifting off a five-mile fetch evaporates.
Revisions: Figure 10.6.
Chapter 11:
New sections:
11.4.5 Annual Winds
11.4.6 Prevailing Direction of Blowing Snow
New figures:
Figure 11.20. Annual average wind speed for Casper, Cheyenne, Lander, Rock Springs, and Sheridan (1961-1990) based on hourly observations for various wind speed intervals (in knots)
Figure 11.21. Annual wind speed departures from average for Casper, Cheyenne, Lander, Rock Springs, and Sheridan (1961-1990) for various wind speed intervals (in knots)
Figure 11.22. Annual wind speed for Casper, Cheyenne, Lander, Rock Springs, and Sheridan (1961-1990) with trends, averages, and inter annual variability (%)
Figure 11.23. Annual wind direction frequencies for Casper, Cheyenne, Lander, and Sheridan (1961-1990)
Figure 11.23a. Prevailing snow transport in Wyoming based on modeled data
Chapter 12:
New section:
12.3 UV Radiation
New figures:
Figure 12.0. Solar radiation reaching the ground surface as a ratio of that on a clear day, in relation to cloud cover and height of cloud base above ground
Figure 12.5a. Afton Solar Radiation Frequency (1988-2003)
Figure 12.12. Daily Erythemal UV doses averaged over 1979-1992
Figure 12.13. New UV Index
Chapter 14:
New section:
14.3.3 Blowing Snow
Revisions:
Figure 14.3. Wyoming emission facilities and pollution monitoring sites (replaced older version)
Figure 14.2. Wyoming total emissions by county (amount) and square mile (density) (1999)
Chapter 16: Home Weather Stations (New Chapter)
Appendix:
New Appendix F:
Wind Load Conversions
State Climate Office | Water Resources Data System
Last Modified: Friday, 17-Oct-2008 09:16:46 MDT