Figure 6. The SSM/I brightness temperature of the center of the August 19, 1992 Crater Peak/Spurr Volcanic Cloud as observed from the F11 DMSP satellite at 02:21 GMT (During Eruption). The same location as observed from the F11 DMSP satellite on August 18, 1992 at 02:32 GMT (Before Eruption). Examples of dry snow and heavy rain are given for comparison[Ferraro et all., 1994b]. Note that both snow and pricipation have a wide range of values at the different SSM/I frequencies.