Sonoma County 1998 Vintage Report
Defining the 1998 vintage in Sonoma County requires looking beyond the averages, as it was a year of contrasting fortunes and precise timing.
Spring was steady if unremarkable, with the vines navigating the vulnerable flowering stage without major incident.
Summer turned up the intensity. With 12 days soaring above 35°C, the vines faced a stress test. Yet, thanks to sufficient water reserves, the canopy remained green, protecting the clusters from sunburn. A key factor was the dramatic diurnal shift (12.8°C), ensuring that despite the daytime warmth, acidities remained razor-sharp.
The season concluded with a pristine harvest window. With negligible rain (2mm), pickers could wait for perfect phenolic maturity, harvesting each block at its absolute zenith.
**Style:** Classically proportioned wines with good balance and terroir expression.
About Sonoma County
Napa's laid-back neighbor, Sonoma is a vast region of microclimates. It excels in cool-climate Pinot Noir and Chardonnay from the coast, as well as robust Zinfandels and Cabernets from its warmer valleys.
Climatic Blueprint
Growing Degree Days (GDD)
Total Rainfall
Sunshine Hours
Diurnal Shift
Frost Days
Average Temperature
Historical Context (10 Years)
Comparison of growing season heat accumulation vs regional average.
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