HEAT RETURNS TO NORTH BAY THIS WEEKEND – MODERATE IMPACT EXPECTED

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Our on-again off-again summer heat will be on again this weekend across the North Bay, with 2 or 3 days of well above average temperatures before cooling arrives around Tuesday the 8th of August.

Our temperature swings are due to the push and pull of high and low pressure in the upper atmosphere. Over the next few days the broad high pressure ridge over the desert southwest will expand west, strengthening over our area.

Saturday and Sunday will be pretty hot, with the warmest areas reaching 100 degrees (105 possible in Ukiah and Cloverdale). Monday should also be hot before cooling begins Tuesday (but really gets underway Wednesday) as a deepening trough of low pressure to the north nudges the high pressure dome back to the south and east.

Our temperatures should peak on Sunday. There is still disagreement between models. The European and GFS deterministic models forecast widespread temperatures of 100 degrees plus. The National Blend of Models is somewhat cooler, with most areas in the 90s.

For its part the NWS is forecasting highs to top out a bit lower, in the 90s over much of the North Bay this weekend, with a low to moderate heat risk.

As always, be conservative in your outdoor activities during the hottest part of the day, and drink lots of water! More seasonal temperatures should return Tuesday or Wednesday.