WMOD00594

• Title: Investigations of Winter Mountain Storms in Utah during the 1987 Utah/NOAA Field Program
• Date: 1/1/1990
• State: UT
• Weather Modification - Doc Type: Report

PAGE

Figure 40. Time versus pressure diagram of geo-
potential height tendency (m) during

STORM 4................................... 110

Figure 41. Time versus pressure diagram for a)
temperature and b) relative humidity
during STORM 4............................ 111

Figure 42. Same as Fig. 41, except for a)
equivalent potential temperatures

and b) wind............................... 113

Figure 43. Westerly and southerly vapor flux
during STORM 4 determined from rawin-
sonde u and v component wind speeds
and absolute humidity..................... 116

Figure 44. A comparison of the liquid water
measured upwind and downwind of
the radiometer............................ 119

Figure 45. Polar plot of radiometer liquid water
depth overlaid on terrain surrounding
the radiometer for STORM 4................ 120

Figure 46. Time series plots of SLWD liquid
water concentration and lidar cloud
base height, radiometer liquid depth
and vapor flux at 3000 m, precipitation
rate, Ke-band radar reflectivity, and
ice particle types........................ 123

Figure 47. Geopotential height (m) and isotherms
(DC) for a) 700 rob, and b) 500 rob sur-
faces at 1700 MST on 15 February

1987. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Figure 48. a) A visible satellite image at 1400
MST on 15 February, and b) an infrared
image at 1430 MST......................... 131

Figure 49. Surface frontal and trough positions for
STORM 5 from 0500 MST on 15 February to
1400 MST on 16 February 1987.............. 132

Figure 50. An infrared satellite image at 1700 MST
on 15 Feburary showing surface and upper
air fronts, troughs, etc.................. 134

Figure 51. An enhanced infrared satellite image at
1800 MST on 15 February................... 134

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