Weather Predictions for Winter 2020-2021

The Climate Prediction Center released a three-month outlook going into the 2020-2021 Rainy Season. This outlook provides insight as to what we can expect for this Winter. It's Mid-October and in SWPPP-land this is what we consider to be the start of the Rainy Season.


A couple of weeks ago we thought we were going to see the first big rain of the season. The storm petered out, and most locations didn't end up qualifying for a Rain Event Action Plan (REAP) or Pre-Storm. But, it was a signal to us that we are at the start of the 2020-2021 Rainy Season.

Source: National Oceanic & Atmospheric Administration

What is predicted for this Winter? Warm and dry in the South & Cold and wet in the North


This can also be referred to as La Nina predictions and is forecasted to further drought conditions for the Western oortions of the United States.


What does this mean for us? Most of our projects are within the area anticipated to receive normal or less precipitation than usual, because of this we are likely to have a mild winter.


Regardless, we have to be prepared for rain when it does happen, especially from October to May when we typically see a majority of rain events.


Some tips to keep your site prepared...

  • Have a plan in place to button up your site immediately

  • Limit the amount of soil disturbance to what you can quickly close up prior to rain

  • Cover chemicals and materials

  • Cover and berm stockpiles

  • Sweep track out

  • Check on BMPs and maintain/replace as needed

  • Address Corrective Actions immediately

  • Keep extra supplies on-hand (e.g. gravel bags, spill kits, plastic)

Resources for Rain Event Preparations...

Have any questions? Email estimating@tullygroup.com or call (707) 693-1926

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