aslkahuna Posted December 2, 2012 Share Posted December 2, 2012 I'm not steve and we don't have 1861 charts. So I'll guess. 1861 had blocking which kept the trough over the west coast for almost an entire month, yeilding a pinapple express marathon. This time the trough near the west coast seems progressive a few more days and it's gone. According to the article in Weatherwise about the 1861-62 flood-that's precisely what happened. Rainfall amounts in SFO were beyond belief. Also, the entire state was affected.. The Feather, American, and Consomnes rivers are the flashiest and most flood prone tributaries of the Sacramento/San Joaquin system so it's entirely possible they could have exceeded stages and flows from 1861-62. There was a levee break along the Feather in 1955 near Yuba city that saved Sacramento and the same thing happened in 1997. In 1861-62 Sacramento was under 20 feet of water. Steve Link to comment Share on other sites More sharing options...
usedtobe Posted December 2, 2012 Author Share Posted December 2, 2012 Impressive precipitation band. looks like portions of the sierra range will get another 4 or 5 inches today to go on top of the already heavy rains. looked at the storm total precip radar product which showed really impressive amounts but don't know when they started the product so I decided not to post it. Below are the reflectivities. Link to comment Share on other sites More sharing options...
GaWx Posted December 2, 2012 Share Posted December 2, 2012 This series of events not getting named by TWC is absurd. Of course, the fact that TWC names anything is worse than absurd. Link to comment Share on other sites More sharing options...
usedtobe Posted December 2, 2012 Author Share Posted December 2, 2012 Honeydew has had at least 13 inches of rain in the past 24 hrs getting another 7 plus in the past 24 hrs. Shasta Dam got almost 8 inches in the 24 hr period. I'm assuming that both reports are correct though Honeydew has the same reading as on Nov 30th which worries me a little. Anyway, here's the latest reports ending at 12Z this morning. Link to comment Share on other sites More sharing options...
tacoman25 Posted December 2, 2012 Share Posted December 2, 2012 This series of events not getting named by TWC is absurd. Of course, the fact that TWC names anything is worse than absurd. I can kind of understand it, though. I mean, this isn't really a "winter" storm in the classic sense, as far as temperatures or snow is concerned (of course, some very high elevations are seeing tons of snow, but that's not really impacting anyone). And since it is really a strung-out series of systems hittting CA, it's not really a single storm that can be named and followed. Link to comment Share on other sites More sharing options...
aslkahuna Posted December 2, 2012 Share Posted December 2, 2012 I can kind of understand it, though. I mean, this isn't really a "winter" storm in the classic sense, as far as temperatures or snow is concerned (of course, some very high elevations are seeing tons of snow, but that's not really impacting anyone). And since it is really a strung-out series of systems hittting CA, it's not really a single storm that can be named and followed. Plus a general lack of interest in West Coast weather at TWC. After all, it's only the I-5/US 101/I15 corridors impacted and not I-95. Steve Link to comment Share on other sites More sharing options...
Amped Posted December 16, 2012 Share Posted December 16, 2012 I'm not steve and we don't have 1861 charts. So I'll guess. 1861 had blocking which kept the trough over the west coast for almost an entire month, yeilding a pinapple express marathon. This time the trough near the west coast seems progressive a few more days and it's gone. Here is the pattern I would guess would cause an 1861 like flood. Luckily the 12z GFS didn't show anything similar. Link to comment Share on other sites More sharing options...
aslkahuna Posted December 17, 2012 Share Posted December 17, 2012 Logical pattern-probably rather more undercutting of the ridge by the southern branch of the flow. Steve Link to comment Share on other sites More sharing options...
thewxmann Posted December 18, 2012 Share Posted December 18, 2012 Here is the pattern I would guess would cause an 1861 like flood. Luckily the 12z GFS didn't show anything similar. Keep that pattern there for two weeks, then we're talking. Link to comment Share on other sites More sharing options...
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