Climate
- in the broad context of temperature, precipitation, prevailing wind
and storm patterns as well as exposure to the sun - is of crucial
importance for optimum fruit development and thus the quality of a
vineyard. Storybook Mountain is located at the top of the Napa Valley,
on an eastern slope of the Mayacamas Range whose ridges separate Napa
from Sonoma. This gives us the desired eastern exposure, an orientation
we share with many of the greatest vineyards in Bordeaux and Burgundy.
Adequately warm weather for ripening is rarely a problem in the Napa
Valley - and certainly not for us. Open to the morning sun and providing
an oblique angle to the hot afternoon sun for a growing day of even
temperature, an easterly exposure helps avoid both the heat spikes
and heat accumulation that can occur on a late summer afternoon. Vines
actually shut down when the temperatures rise above 95 degrees F,
whereas maximum efficiency in sunlight and nutrient assimilation is
reached between 75 and 85 degrees F.
Our
location at the top of the Valley further moderates our temperature.
The Russian River to our west funnels in cooling ocean breezes on
warm afternoons. The path of these breezes to the hot interior leads
over the low point in the ridge separating the valley systems, i.e.
Storybook Mountain. As a result, we are usually 10 degrees cooler
than the valley just below us.
The
rain pattern, too, contributes to the uniqueness of our site. Because
of the winter storms that come off the Pacific and in from the north,
and our proximity to 4344-foot Mount St. Helena, our corner of Napa
is the rainiest in the county, receiving twice the rain of Carneros
at the south end of the Valley. This moisture - given our clay soil
and relative coolness - means most of our mature vines do not need
irrigation. In the crucial summer and fall months, however, we receive
less rain than the rest of the Valley, protected as we are by our
ridges and northerly location from the summer and fall storms that
usually come up from Mexico. This relative dryness is an especially
wonderful boon if the weather at harvest is less than ideal.
The land and the weather come together
in unique ways at Storybook Mountain, assuring you who drink our wines
of all the advantages of estate grapes grown on one of Napa Valley's
best vineyard sites as well as its most beautiful.