Rainfall Deficit

The remnants of Hurricane Delta, combined with a frontal zone moving eastward across the county, will yield some wet weather over the area during the next 24 hours. Don’t anticipate a big soaking rain event but do plan for some wet weather as we close out the holiday weekend and start the work week. While not the best of timing, we certainly need the rain as drought conditions persist over the region.

Extreme Drought Conditions

The most recent update from the U.S. Drought Monitor program placed all of Cape Cod in the “Extreme Drought” category. According to the program, a “D3 Extreme Drought” means:

Crop loss is widespread; Christmas tree farms are stressed; dairy farmers are struggling financially
Well drillers and bulk water haulers see increased business
Water recreation and hunting are modified; wildlife disease outbreak is observed
Extremely reduced flow to ceased flow of water is observed; river temperatures are warm; wells are running dry; people are digging more and deeper wells

Not surprisingly, we are running WELL BELOW average in terms of seasonal precipitation. At Hyannis, just 19.90″ of precipitation has been recorded in 2020. The average through the date is 36.07″. The numbers at Chatham are very similar.

Here on the Cape, there are few true rivers to help us track stream flow and drought conditions. That said, the herring river in Harwich has a long-standing historical record of stream flow dating back to the 1960s. Not surprisingly, the river is running near its lowest levels on record and far below the average for this time of year.

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