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A Hi Vis Winter

Based on the National Weather Service’ Climate Prediction Center, here is a summary of the main factors which usually influence seasonal climates:
  • El Nino and La Nina
  • Trends – Approximated by the Optimal Climate Normals (OCN) Tool – difference between the most recent 10-year mean temperature or 15-year mean of precipitation and the 30-year climatology Period (currently 1971-2000)
  • The Tropical 30-60 DAY oscillation – otherwise called the Madden Julian
  • The North Atlantic Oscillation (NAO) And the Pacific North American (PNA) patterns
  • The Pacific Decadal Oscillation(PDO)
  • Persistently dry or wet soil in the summer and snow ice cover anomalies acting as a kind of memory system
  • Statistical forecast tools
  • Dynamical forecast models
  • Consolidation (CON) - Makes optimum use of the known skills in our forecast tools

Based on the numbers provided, here are some of the November December January (NDJ) 3-month temperature outlooks:

  • Below average temps over much of Alaska, Washington and coastal regions of Oregon and California
  • The 3-month precipitation outlook calls for above average median precipitation almost through the Mississippi Valley
  • In locations where the likelihoods of seasonal mean temps and rainfall are similar to probabilities, equal chances of low, mean, or high averages are likely.
Hi Vis Supply has a full line of high visibility winter jackets and rain gear for the winter months.
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