PSA:
The NWS always appreciates observations, especially detailed observations that everyone on here is capable of giving. That can be done thru Twitter, as they often set up a feed for that, or the mPing app. That can include final snowfall amounts, when the snow starts/stops, precip type, dew point, etc
This helps them with short term forecasts as well as future forecasts as they can learn from them. A few years ago they had a freezing rain advisory for Leavenworth, but I notified
So for this Friday, based on models, the 850 temps appear to be around a +16. This is the lowest I'd like to see for a 90F+ in Portland (+15 can be acceptable if there is ample downslope winds. Temperature potential is 89 given a 1020 mb pressure (what said models are forecasting). However, downslope winds are expected which may make the true temperature potential higher. I'm still going to stick with 89 for now, though the true potential is at 92-94 (depending on wind speed) if 850s don't change.
May 28th, 1983 stayed below temperature potential (107F), and June 2021 at Salem already was cooling down at the highest 850s at sounding time, though the day before was a +0.2F above potential. If I had to guess, the 30.4C 850s weren't the highest at sounding time compared to earlier that day.
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Posted by Brian_in_Leavenworth,
IOS Link:https://apps.apple.com/us/app/mping/id584383400 Android: https://play.google.com/store/apps/details?id=edu.ou.cimms.mping&hl=en_US&gl=US&pli=1
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