Gusty Santa Ana winds for San Diego mountains Thursday - The CW San Diego - News 8

Gusty Santa Ana winds for San Diego mountains Thursday

Weather Update: Thursday, December 13, 2018 at 5:00 a.m.

Offshore flow under a weak Santa Ana will bring warmer temperatures to San Diego coastal and inland areas. Gusty winds in the mountains and foothills through Thursday evening. Cooler Friday as onshore flow returns. Slight chance of light rain on Monday.

A Detailed Look at December 13th:

  • Moderate rip current risk. Water temperature 59-63. Decreasing west-northwest swell, heights 2-4 ft. UV index for San Diego is moderate (3). 
  • High temperatures Thursday warm west of the mountains. Coastal highs 69-75, normal around 65. Inland highs 71-77, normal around 69. Mountain highs 52-61, normal around 52. Desert highs around 66-71, normal around 68. 
  • Gusty winds through Thursday as surface level high pressure in the Great Basin strengthens Thursday morning. Areas with the strongest wind gusts will be the mountain passes and valleys. Peak wind gusts will likely be seen Thursday morning. The most wind prone locations may see gusts up to 45 mph. Most valleys and foothills will see gusts up to 35 mph. Winds decrease Thursday night as a trough moves inland.

In the Week Ahead:

  • Temperatures cooler Friday as a trough of low pressure moves inland across the West Coast. This will return onshore flow, helping to cool coastal and inland locations. Mid to high level clouds will move across the region as the trough draws moisture from the tropics. 
  • Slight chance of light widespread rain Monday. Models have not come into agreement regarding the behavior of the low, but there will be decent moisture levels should the low tap into it.
  • High pressure will once again strengthen over the Great Basin midweek next week. Offshore flow will warm temperatures Tuesday through Wednesday. Gusty winds in the mountain passes and valleys possible during this time. 
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