WMOD00315

• Title: Investigations of Winter Storms Over the Wasatch Plateau During the 1991 Utah/NOAA Field Program
• Prepared For: Utah Department of Natural Resources Division of Water Resources
• Prepared By: Arlen W. Huggins, Melanie A. Wetzel, Patricia A. Walsh
• Date: 10/1/1992
• State: UT
• Weather Modification - Doc Type: Report

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Figure 4.15. Same as Fig. 4.14,. except for the period 2200 28 February - 0700 1

March. ............................................. 4-27
Figure 4.16. Same as Fig. 4.14, except for the period 1800-2400 1 March. ....... 4-28
Figure 4.17. Same as Fig. 4.14, except for the period 0500-0800 2 March. ....... 4-29
Figure 4.18. Same as Fig. 4.14, except for the period 2000 4 March - 0100 5

March. .............................................4-30
Figure 4.19. Same as Fig. 4.14, except for the period 043()..1000 5 March. ....... 4-31
Figure 4.20. Comparison of liquid depth data from the USBR and DR! radiometers on
17 January 1991. ....... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33
Figure 4.21. Same as Fig. 4.21, except for a nine hour period on 18 January 1991. . . 4-34
Figure 4.22. Scatter plot of the 2-min liquid averages shown in the temporal plots of

Fig. 4.20. ........................................... 4-35
Figure 4.23. Same as Fig. 4.22, except for the using the data from Fig. 4.21. ..... 4-36
Figure 4.24. Comparison of liquid depth data from the USBR and DR! radiometers
during the period 0000-2400 13 February 1991. .................... 4-38
Figure 4.25. Mobile radiometer data during two transects of Route 1 between the DOT
site and Fairview, Utah on 19 January. ......................... 4-39
Figure 4.26. Mobile radiometer data as in Fig. 4.25, except for transects of Routes 1,
2, and 3 on 28 February. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-41
Figure 4.27. Mobile radiometer data as in Fig. 4.25, except for transects of Routes 1

and 3 on 5 March. ...................................... 4-43
Figure 4.28. Comparison of mobile radiometer liquid data with stationary radiometer
data from the DOT site on 14 March 1991. . . . . . . . . . . . . . . . . . . . . . . . 4-45
Figure 4.29. Mobile radiometer liquid water depth averages stratified by east-west
distance across the Wasatch Plateau for experiments conducted on 15 January

1991. ..............................................4-49
Figure 4.30. Same as Fig. 4.29, except for 19 January 1991. . . . . . . . . . . . . . . . . 4-50
Figure 4.31. Same as Fig. 4.29, except for 28 January 1991. . . . . . . . . . . . . . . . . 4-51
Figure 4.32. Same as Fig. 4.29, except for 28 February 1991. . . . . . . . . . . . . . . . 4-52
Figure 4.33. Same as Fig. 4.29, except for 1 March 1991. ................. 4-53
Figure 4.34. Same as Fig. 4.29, except for 2 March 1991. ................. 4-54
Figure 4.35. Same as Fig. 4.29, except for 4 March 1991. ................. 4-55
Figure 4.36. Same as Fig. 4.29, except for 5 March 1991. ................. 4-56
Figure 4.37. Same as Fig. 4.29, except for 6 March 1991. ................. 4-57
Figure 4.38. Same as Fig. 4.29, except for 11 March 1991. ................ 4-58
Figure 4.39. Same as Fig. 4.29, except for 14 March 1991. ................ 4-59
Figure 4.40. Mobile radiometer liquid depth averages stratified by east-west location
across the Wasatch Plateau for all mobile data collected during 1991 Utah/NOAA

Storm Periods. ........................................ 4-60
Figure 4.41. Liquid cloud profiles (scalloped lines) based on radiometer liquid depths
and cloud base observations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-63
Figure 5.1 A VIRIS image for the 0.85-J4m spectral channel. ................. 5-4
Figure 5.2 Aircraft track for NOAA King Air within A VIRIS image in Fig. 5.1. . . . . . 5-5
Figure 5.3 Calibrated spectral radiances from four A VIRIS image channels. . . . . . . . . 5-6
Figure 5.4 Liquid water concentrations measured by the NOAA King Air within the
A VIRIS image area of Fig. 5.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Figure 5.5 PMS 2-D ice crystal observations obtained from the NOAA King Air during
a flight segment within the A VIRIS image area. ..................... 5-9
Figure A.1. Time-height plots of temperature and relative humidity from Mt. Pleasant
soundings taken on 16-17 February 1991 during Storm Period 7. . . . . . . . . .. A-2
Figure A.2. As in Fig. A.1 for plots of equivalent potential temperature and westerly

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