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http://sanfrancisco.cbslocal.com/20...recast-for-what-could-be-storm-of-the-decade/
Stay safe NorCal-GAF.
Hurricane-Force Winds, Torrential Rain Forecast For What Could Be Storm Of The Decade
by Brandon Mercer
December 9, 2014 10:06 AM
SAN FRANCISCO (CBS SF) — Sustained winds at or near hurricane strength in the highest elevations with gusts exceeding 100 miles per hour across the Sierra summit are forecast for Thursday, with Bay Area winds easily gusting past 50 miles per hour in urban areas and 70-80 miles per hour in the local mountains and hills in what could be the storm of the decade.
Computer models are able to break down the exact time of highest danger. By mid-morning Thursday, models indicate winds peaking. Along the coast, 60 mile per hour winds are forecast, with higher gusts.
The term “hurricane” is only used to refer to tropical storms, and is used when sustained winds reach 74 miles per hour. That level of wind strength is possible at extreme elevations above 9,000 feet and higher Thursday, according to the National Weather Service warning.
KPIX 5 chief meteorologist Paul Deanno said, “Given the long-term drought and short-term saturated ground, many trees will lose the battle with the wind on Thursday.”
Deanno compares this week’s storms to other significant events saying, “For those of us who have lived here for a while, the potential of this storm is comparable to the ones in January 2008 and February 1998, both of which caused widespread wind & flooding damage. As always, the forecast can change.”
The National Weather Service has issued a whopping 15 separate warnings and advisories for the system including a Flash Flood Watch, Gale Warning, Hazardous Seas Advisory, and High Wind Watch. Such warnings are typically issued about 24 hours ahead of the storm, but the near-certainty of this storm hitting and causing complications may have forced the early warnings.
Rainfall amounts above eight inches are forecast for the coastal ranges, triggering the Flash Flood Watch, an official notice to be looking for potential flooding. During the storm, these alerts will change from watches to warnings as actual floods begin occurring.
Rainfall amounts of over half an inch per hour are forecast, and if the storm slows, it could reach one inch per hour, causing serious flooding in the Bay Area.
Waves approaching 30 feet are predicted for surf breaks like Mavericks, and ocean swells will build to at least 20 feet by Wednesday, triggering the Small Craft Advisories and Hazardous Seas alerts. That link also includes details on high tides, where the seas will rise to meet the inundated rivers, creating even more flooding in low-lying areas like Sausalito and along the coast.
COMPLETE LIST OF WARNINGS:
Flash Flood Watch
Gale Warning
High Surf Advisory
Dense Fog Advisory
Small Craft Advisory For Hazardous Seas
Small Craft Advisory For Rough Bar
Small Craft Advisory
Gale Watch
Winter Storm Watch
Flood Watch
High Wind Watch
Special Weather Statement
Marine Weather Statement
Hazardous Weather Outlook
Hydrologic Outlook
Stay safe NorCal-GAF.