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Check out this view over Denver this morning. Maybe this will put the "cant accumulate on warm ground" thing to rest. Ground was in the 70s 2 days before. Air temp was 90s. Wow.
The pavement is all melted. Of course grass insulates the snow from the ground. As another poster posted though, the snow is all melted now. And if it isn't, it will be melted in a few days when the temps are back in the 70's and then 80's.
Still going...for the mountains. Looks like the Upper Low is STILL over the area. (Orange Circle). That is creating more Oerographic lift for sure. Heavy snow above 8000' in some spots. And its keep the surface well below normal.
The center of it is over Colorado and moving Northeast. Will be over SD Saturday then eventually get absorbed into the Jet Stream which is in Canada.
So I think some mountains got snow for 4 days from this event. I forget when it started
Or Use the NAM 500mb Maps here: https://www.tropicaltidbits.com/anal...20091006&fh=21 NOAA is having server issues so heads up. But you can play the loop back to see the evolution of this Upper Low and future cast where its going.
Last edited by Cambium; 09-10-2020 at 06:42 PM..
Reason: Fixed Link
This was an interesting event to follow. Thanks everyone for their posts. Will be fun to look back on.
Last post I guess is this. The snowfall total amounts. Whats funny is the 2nd shade of blue (0.10 - 1.0") would of been impressive enough for this time of year but look how much snow fell and how widespread it was. Impressive. Labor Day week. Wow.
Check out Alamosa Colorado. 13.1" in 2 days. This mornings snow depth was 14" so not much melted and more fell between midnight and the 12z snow depth OBS
This was an interesting event to follow. Thanks everyone for their posts. Will be fun to look back on.
Last post I guess is this. The snowfall total amounts. Whats funny is the 2nd shade of blue (0.10 - 1.0") would of been impressive enough for this time of year but look how much snow fell and how widespread it was. Impressive. Labor Day week. Wow.
Check out Alamosa Colorado. 13.1" in 2 days. This mornings snow depth was 14" so not much melted and more fell between midnight and the 12z snow depth OBS
Long way out, but third week of September GFS has a tropical storm/hurricane racing up the Eastern US Seaboard before merging with an upper-level longwave trough over the Canadian Maritimes. This sucks cold air down from the north to create a major snowstorm in western Newfoundland. Up to 30cm of the white stuff at sea level!
Before anybody says it's "way up north in Newfoundland" remember that Newfoundland is the same latitude as Montana and September in that part of the world is warmer than June.
Really enjoyed reading the posts on this thread....! 100f temps then freezing two days later ! Simply insane ! Would y'all believe an obscure town called Eyre out along the Nullabor Plain in Western Australia recorded something similar earlier this week ( in reverse ) After an overnight low of -0.1c ( 32f ) on the 4th Sept, the temp rose to 36.5c ( 97.7f ) on the 6th Sept !
All of the coastal towns facing the Southern Ocean are prone to wild fluctuations with competing air masses from the interior deserts and the Southern Ocean. This happens in all months of the year... some summers record temps of 120f and a few nights later in the 30's and 40's F as a cold front sweeps through.
Eucla 40.1c ( 104.2f ) and Nullabor 38.6c ( 101.5f ) broke long standing Sept heat records yesterday. Eucla only made it 19.6c ( 67.3f ) today and Nullabor 22.5c ( 72.5f )
And an example of the changeable early spring weather at Nullabor the last 5 days ( in Farenheight )
72.5f, 101.5f, 69.8f. 63.7f, 99.7f.
Pretty outrageous by Aussie standards !
Last edited by greysrigging; 09-11-2020 at 02:17 AM..
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