CW3E AR Update: 5 November 2020 Outlook
November 5, 2020
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First significant precipitation event of the season likely in California and the Four Corners Region
- A shortwave trough and an associated AR are forecast to bring significant precipitation to portions of California and the Four Corners Region over the next several days
- AR 2/AR 3 conditions (based on the Ralph et al. 2019 AR Scale) are possible in south-central Arizona
- The highest precipitation amounts (1–3 inches) are forecast over far northern California, the Sierra Nevada, coastal Southern California, and across the higher terrain in central Arizona, Utah, and western Colorado
- Significant snowfall is also possible in the Sierra Nevada and San Juan Mountains
Click images to see loops of GFS 500-hPa Absolute Vorticity & IVT forecasts Valid 1200 UTC 5 November – 1200 UTC 9 November 2020 |
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Summary provided by C. Castellano, C. Hecht, J. Kalansky, B. Kawzenuk, and F. M. Ralph; 5 November 2020
*Outlook products are considered experimental