Here is what the park is reporting.
Jan 20, 2011 Death Valley Park Reports: Although many locations in California had the wettest December on record, Death Valley received only moderate amounts of precipitation. So far, only 0.51 inches of rain has been recorded at Furnace Creek since July 1, 2010.
None the less, we are seeing sprouts of wildflowers in the southern part of the park due to rain in October. On hillsides and alluvial fans near Jubilee Pass the plants are well established and may start showing blooms after it starts to warm up in February. The wildflowers that sprouted from December rains are growing more slowly due to the cool temperatures, so may not be large enough to bloom until March. It is too early to predict when peak bloom will occur this year.