エルニーニョ発生、

今年の冬はウエットになる可能性があります。
NOAA expects this El Niño to continue developing during the next several months, with further strengthening possible. The event is expected to last through winter 2009-10.
  :
El Niño’s negative impacts have included damaging winter storms in California and increased storminess across the southern United States. Some past El Niños have also produced severe flooding and mudslides in Central and South America, and drought in Indonesia.
NOAA News
過去のデータ解析

Tioga Road 20日10時に開通

Tioga Road沿いの施設が開くのには、あと数週間かかりそうです。
Tioga Road to Open in Yosemite National Park
Visitors urged to take safety precautions for upcoming Memorial Day Weekend
Yosemite National Park Acting Superintendent Dave Uberauga announced today that the Tioga Road will open for the season on Wednesday, May 20 at 10:00 a.m. for all vehicle traffic. The Tioga Road, bounded on both sides by State Highway 120, is the popular east-west crossing of the Sierra Nevada. There will be no commercial services available along the road until further notice. However, there will be gasoline available 24 hours per day (credit cards only). Additionally, the Tuolumne Meadows Campground, other campgrounds along the corridor, and the Tuolumne Visitor Center will not be open. There will be pit toilets available along the Tioga Road. All visitor services, including the campgrounds, store, gas station, etc. will open over the next several weeks.

GP Rd. 開通予定日

やはり来週24日に開通の予定です。
だとすると、過去14年で最も早い開通日になります。
The Glacier Point Road tentatively may open on Friday, April 24, conditions permitting.
The Mariposa Grove Road tentatively may open on Friday, April 17, conditions permitting.

4月24日 Glacier Point Rd. 開通予定?

すでに除雪は終り、道路を広げる仕事に入っているようです。来週は道路のパッチワークを終え、24日には開通のようですが... 
Glacier Point Road
Crew is continuing to widen the road and clear the parking lot. As of now the main spot of concern regarding road width is from summit meadow to Badger. That area will be widened this morning and the dozers will be able to be hauled starting today. Next week we will be patching and repairing the roadway in various locations.The fuel truck is scheduled to be delivered to the 140 /120 junction tomorrow. Tentative opening date will be April 24, 2009 pending any additional storms or safety concerns.