Whew…too much rain in too short a time this morning; much like Halloween. Approaching 2″ of rain leading up to 9am and then suddenly 3/4″ in the past two hours ending at 11am at PDX. Storm drains and small creeks aren’t used to that intensity of rain. Lots of views like this all across the Portland/Vancouver metro area:
And rain totals since midnight:
As of 11am: It’s the wettest December day on record at PDX! 2.36″ since midnight and almost 3″ since yesterday evening when the rain began.
The wettest calendar day on record is 2.69″ on Nov. 19, 1996. The wettest 24 hour period is much heavier…4.44″ in late October 1996. We may break the first record, definitely not the 2nd.
Obviously this is causing all sorts of “urban” (street/creek/home) flooding. I wouldn’t be surprised to see more significant mudslides the next 48 hours as well. If you live near a known mudslide area be alert to any movement!
Two main points for the rest of the day
1. RAIN WILL CHANGE TO LIGHT SHOWERS IN THE NEXT 2 HOURS, then light rain off/on through Tuesday afternoon. Another slug of heavy rain arrives tomorrow evening/night
2. GUSTY WIND ARRIVES NEXT FEW HOURS. Not damaging (probably) but enough to topple a few trees with water-logged ground. Gusts 25-35 mph likely
CASCADE SNOW: Forget about it…rain is even heavier up there washing the snow away.
RIVER FLOODING: Looks like we’ve got at least 7 rivers under flood warnings. Good news for the Willamette River system is that reservoirs are just about empty right now! But that doesn’t help the small rivers/creeks or the coastal basins since they aren’t covered by flood-control reservoirs.