Wednesday, September 09, 2020
Still A Bit Smokey This Morning
Morning skies are still smokey but clearing slowly. Down at bottom is view of new snow along Boulder Creek in Colorado.
Deep convection developed late afternoon yesterday, mostly at east edges of metro area and over the Rincons. Plot of detected CGs above (from Atmo and Vaisala) is for 24 hours ending at 2:30 am MST early this morning. Storms were nearly stationary over Rincons and Redington Pass. Here at house we had thunder and a sprinkle around 3:30 pm and then some thunder again in the evening around 7:00 pm.
ALERT data (below for 24-hours ending at 9:00 am this morning) show very heavy amounts for north Rincons and Redington Pass - over 4 inches of rain at Park Tank between 6:00 and 8:00 pm last evening. No flow in the Rillito this morning, so all that water ran off into the San Pedro.
The 500 mb chart (above from SPC) at 12 UTC shows the closed low spinning over eastern Utah. Models forecast it to linger and perhaps drift into northeastern Arizona, before kicking out to the northeast tomorrow morning.
The morning sounding from TWC (below) has very strange structure with VERY dry low-levels - current dewpoint at airport is in middle 20s F. Surprisingly, some showers have developed to the south and east of the metro area, where dewpoints are still holding around 60 F. Don't expect anything over metro area though.
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