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Conditions for Santa Rosa, CA

(Sonoma County)

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Precipitation (Total)
Temperature (Maximum)
Drought Indicators

Indicators are variables used to describe drought conditions (e.g., precipitation, temperature, streamflow, groundwater and reservoir levels, soil moisture, and snowpack). In order to get a complete picture of drought conditions, several drought indicators should be examined.

Legend
                     
Exceptional Wet Exceptional Drought
Short-Term Drought Indicator Blend
EXPERIMENTAL

These experimental drought blends integrate several key drought monitoring products and indices into a single short-term or long-term product, based on the methodology developed at the NOAA Climate Prediction Center. The blends are created using the Climate Engine tool, and apply the CPC weighting ratios to the high-resolution gridMET gridded research dataset. The data is updated daily, with a delay of 2 to 3 days to allow for data collection and quality control.

The short-term blend combines PDSI, Z-Index, 1-month SPI, and 3-month SPI to estimate the overall short-term drought. Please refer to the product documentation for more information. This product is an example of current NIDIS-funded research.

This data is updated every 5 days, with a delay of 4 to 5 days to allow for data collection and quality control.

* Currently, data is only available for the contiguous U.S.
D4 D3 D2 D1 D0  
0-2 2-5 5-10 10-20 20-30 30-70
W0 W1 W2 W3 W4
70-80 80-90 90-95 95-98 98-100

Click here for more information about this legend

01/27/20
Long-Term Drought Indicator Blend
EXPERIMENTAL

These experimental drought blends integrate several key drought monitoring products and indices into a single short-term or long-term product, based on the methodology developed at the NOAA Climate Prediction Center. The blends are created using the Climate Engine tool, and apply the CPC weighting ratios to the high-resolution gridMET gridded research dataset. The data is updated daily, with a delay of 2 to 3 days to allow for data collection and quality control.

The long-term blend combines PDSI, Z-Index, and 6-month, 1-year, 2-year, and 5-year SPI to estimate the overall long-term drought. Please refer to the product documentation for more information. This product is an example of current NIDIS-funded research.

This data is updated every 5 days, with a delay of 4 to 5 days to allow for data collection and quality control.

* Currently, data is only available for the contiguous U.S.
D4 D3 D2 D1 D0  
0-2 2-5 5-10 10-20 20-30 30-70
W0 W1 W2 W3 W4
70-80 80-90 90-95 95-98 98-100

Click here for more information about this legend

01/27/20
Future Conditions for Sonoma County
Evaporative Demand (EDDI) Forecast
EXPERIMENTAL

The Evaporative Demand Drought Index (EDDI) is an experimental drought monitoring and early warning guidance tool. It examines how anomalous the atmospheric evaporative demand (E0; also known as "the thirst of the atmosphere") is for a given location and across a time period of interest. This experimental subseasonal EDDI forecast shows projected evaporative demand for the next 2 weeks and 4 weeks from the CFS-gridMET dataset at 4-km gridded resolution. Learn more.

ED4 ED3 ED2 ED1 ED0         EW0 EW1 EW2 EW3 EW4
100% 98% 95% 90% 80% 70% 30% 20% 10% 5% 2%
* Currently, data is only available for the contiguous U.S.
Source(s):
01/27/20
CPC Outlooks

NOAA's Climate Prediction Center issues Monthly and Seasonal Drought Outlooks each month. The Monthly Drought Outlook predicts whether drought will emerge, stay the same, or get better over the next 30 days or so, while the Seasonal Drought Outlook predicts whether drought will emerge, stay the same, or get better in the next three months.

       
Drought persists Drought remains but improves Drought removal likely Drought development likely
Source(s):
CPC
01/27/20

Historical Conditions for Sonoma County

The U.S. Drought Monitor (USDM) is a national map released every Thursday, showing parts of the U.S. that are in drought. The USDM relies on drought experts to synthesize the best available data and work with local observers to interpret the information. The USDM also incorporates ground truthing and information about how drought is affecting people, via a network of more than 450 observers across the country, including state climatologists, National Weather Service staff, Extension agents, and hydrologists. Learn more.

Time Period (Years): to
Drought Numbers in Sonoma County
483,878

people in Sonoma County are affected by drought

same
No change
since last week
same
No change
since last month
100%

of people in Sonoma County are affected by drought

same
No change
since last week
same
No change
since last month
32nd

driest June was in 2021, over the past 127 years

same
0.31
same
inches from normal
8th

driest year to date in 127 years occured in 2021

same
15.5
same
inches from normal