Weather Outlook

30-Day Weather Outlook for September 18, 2017, to October 18, 2017

  • Sep 19, 2017

Summary- Troughing will continue in the interior west US, while California and the California coast sees a return of drier and warmer than normal conditions. Santa Ana winds, or their central and northern California equivalents will occur during this period.

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30-Day Weather Outlook for September 12, 2017, to October 12, 2017

  • Sep 13, 2017

Summary- Upper low pressure near central and southern California will continue some support for showers in the SierraNV, and possibly also in southern California. Another tropical cyclone is suggested to move into W Mexico on September 17-19th, producing rains in Sinaloa/Sonora, thence into S Arizona and New Mexico. The active trough in California will tend to steer the tropical cyclone into W...

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30-Day Weather Outlook for September 5, 2017, to October 5, 2017

  • Sep 05, 2017

Summary- High pressure continues through about September 16 in the Pacific Northwest and Great Basin. Unusually warm or hot conditions continue likely during this period in Oregon and most of California with support for dry conditions in the north. Upper low pressure off California will continue the support for rains in southern and central California from TSTMS, while NW California starts to see...

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30-Day Weather Outlook for August 29, 2017, to September 29, 2017

  • Aug 29, 2017

Summary- Strong upper high pressure continues through September 8, and possibly the 9th, producing hot conditions. Hottest conditions are September 1-6 in all of Calif, and 3-8th in N California. Model guidance suggests a tropical cyclone coming N to central Baja California on Sept. 3-5th then stalling southwest of S California. Moisture mostly remains or drifts at sea and turns westward, but...

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30-Day Weather Outlook for August 22, 2017, to September 22, 2017

  • Aug 22, 2017

Summary- A trough in N California on August 25th will be replaced by persistent upper high pressure and hot conditions on August 27th – the first part of September. The hottest conditions are from August 27-30th, and September 3-5, and in N California from September 5-9. Model guidance suggests a tropical cyclone coming N to central Baja California on September 1-2, then turning inland over...

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30-Day Weather Outlook for August 14, 2017, to September 14, 2017

  • Aug 15, 2017

Summary- High pressure continues for S Oregon and N Calif west-southwestward. Because there is abundant moisture in this storm track, significant rains are possible in Washington State and British Columbia. Upper low pressure near S Calif and N Baja gives more support for rain and TSTMS in central Calif and the Sierra and SOCAL-Arizona. However the pattern evolves to a dry SW flow pattern into...

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