"10 Year" storm for California - Spillway Collapse Update

Remotely? 8O 8O

Heck yeah, there would be rebar all over the place, especially since the rebar should either be tied or welded together at each junction.

I’m no dam expert, ha, but I’ve seen a few in my day, and I would expect a wider spillway on such a large lake.

Wonder if the concrete was even tested as it was poured back then, doubtful. Then did someone decide to add more water to the mix as it was being poured, and weakened it. Ugh, Government at work always give me heartburn.

Big rain coming. Atmospheric river forecast for Monday, targeted right at the Oroville dam area (yellow arrow).

8O 8O 8O

Alltime low baro today: 29.14 in (986.8 mb) and still falling. No wonder it was so windy. A lot of trees and powerlines down throughout the CWA.

Southwest is cancelling flights in the L.A. area and the NWS has suggested taking the afternoon off so they are getting nervous down south.

Yup, looks like it’s SoCal’s turn in the barrel. BTW, the following link also shows video of them dumping a lot of rock below the emergency spillway at Oroville Dam.

[size=83]Reports: Evacuations ordered in Southern California as major storm brings flood threat

One of the biggest storms in years is bombarding Southern California with heavy rain and gusty winds and will continue to slam the region into Saturday.

The worst conditions are expected from Los Angeles through Santa Barbara, California with heavy rain causing mudslides and significant travel delays. Evacuation orders have already been issued for some communities due to the high threat of mudslides.

Those traveling around Los Angeles for the Friday evening commute will likely face significant travel delays due to the rain. Some roads will potentially become impassable because of flooding.

Most flights out of John Wayne Airport in Orange County have been canceled today, including all Southwest and American flights.

Due to heavy rain and wind, there is a Traffic Management Program in effect for traffic arriving at Los Angeles International Airpot (LAX). According to www.faa.gov, some arriving flights are being delayed an average of 1 hour and 17 minutes.

There have been more than 900 flight delays and 400 flight cancellations at airports across California today, according to FlightStats.

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http://www.accuweather.com/en/weather-news/reports-evacuations-ordered-in-southern-california-as-major-storm-brings-flood-threat/70000891

LA rain is now trending on Twitter: https://twitter.com/hashtag/LARain?src=tren&data_id=tweet%3A832717273672462336

Flash flood warnings are in effect for Ventura, Los Angeles, Kern, and Santa Barbara counties.

Flight delays are now up to 129 minutes at LAX due to wind.

Egads! Just saw this on NWS Sacramento Twitter feed:

[size=83]Today's storm is impacting all of #California. But the next one will be bigger and more impactful for #NorCal early next week #CAStorm #cawx[/size]

https://twitter.com/NWSSacramento

Yeah, Monday will be our day 8O

We’ll be getting some of that down here too. Forecast for Monday:

Washington’s Birthday
Rain. The rain could be heavy at times. High near 62. Breezy. Chance of precipitation is 90%.

Over 60,000 people without power in SoCal.

Looks like we are going to get more than our fair share from this next storm. Flood watches have been posted that includes my area as well.

[size=83]...FLOOD WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE MONDAY NIGHT... The National Weather Service in San Francisco has issued a
  • Flood Watch for a portion of western California…including
    the following areas…Coastal North Bay Including Point Reyes
    National Seashore…East Bay Hills and the Diablo Range…East
    Bay Interior Valleys…Mountains Of San Benito County And
    Interior Monterey County Including Pinnacles National Park…
    North Bay Interior Valleys…North Bay Mountains…Northern
    Monterey Bay…Northern Salinas Valley/Hollister Valley and
    Carmel Valley…San Francisco…San Francisco Bay Shoreline…
    San Francisco Peninsula Coast…Santa Clara Valley Including
    San Jose…Santa Cruz Mountains…Santa Lucia Mountains and
    Los Padres National Forest…Southern Monterey Bay and Big Sur
    Coast and Southern Salinas Valley/Arroyo Seco and Lake San
    Antonio.

  • Impacts include enhanced runoff/flooding in low lying areas and
    waterway, rising water levels/flooding in areal streams, creeks
    and rivers, increased risk of mudslides in steep terrain, downed
    trees and power lines, and damaged or washed out roadways.[/size]

[size=83]An atmospheric river storm pattern will return to Bay Area beginning Sunday morning and extending through the early week. Rainfall from this system will be most intense Sunday night into Monday, with rain accumulation as high as 4-6 inches in the Santa Cruz Mountains and other portions of the Coast Range generally north of the Monterey Bay. Widespread flooding and additional mudslides are likely, given recent rains and enhanced seasonal soil moisture and creek levels. High winds are likely, but will not reach velocities as high as Friday night's system.[/size]

Just saw that Maxwell (N of Sacramento on 5) is flooded, it hasn’t rained much up this way today.

http://www.krcrtv.com/news/local/northstate/maxwell-heavily-flooded-evacuation-centers-opened-in-williams/342132619

Wow, I hadn’t heard about that one. The flooding is covering such a large area. And that’s going to continue to be a problem as long as it keeps raining. The soil is so saturated that any more rain we get, is only going to cause more flooding and mud/land slides.

The effects of this storm have made it on to TV here in the UK. They showed some video of a car going into a sink hole on top of another one. Looks pretty bad, strange thing was that our UKMO weather man had not heard of the term being used over there to describe this effect - a bombogenesis - apparently they use a different term over here, all amounts to the same thing though a pretty nasty set of conditions.

Stay safe guys…

Stuart

I don’t believe I had heard the term until yesterday, and was surprised to find it’s apparently valid and not another media created apocalypse :roll:

“Explosive cyclogenesis (also referred to as a weather bomb, meteorological bomb, explosive development, or bombogenesis) refers in a strict sense to a rapidly deepening extratropical cyclonic low-pressure area.”

Did they show the [url=http://jalopnik.com/fire-truck-plunges-into-crater-as-storms-annihilate-sou-1792513307]firetruck video[\url] too? (Sorry for the indirect link, comments there may be a bit salty.) The firefighters had already bailed out when they felt the back wheels sinking.

I could not remember the phrase our UKMO guy used but you nailed that… it was Explosive cyclogenesis…

That one was on the news this morning…

Stuart

the term weather bomb I belive was started here in NZ some years ago
its when a low deepens 24 hpa in 24 hours
and the energy released is like a bomb going off

24 hpa = 0.7" inHg 8O