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Observations of snow, sleet, freezing rain Sun-Tue Dec 1-2-early 3


wdrag
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3 minutes ago, psv88 said:

Models were underdone on the snow up here, solid coating and right around freezing. Sleet pounding on the windows right now

The Nam forecast soundings I looked at last night and this morning were all over this.  Showed a warm nose this morning with the mid levels cooling to an isothermal sounding for a couple of hours resulting a a turn to snow right around when it did and mixing back before 3pm (right on schedule there's more sleet than snow here now).

I was actually having my doubts about a flip to snow after 12 noon, but the model had it right.

 

Back down to 32 here with a sleet/snow mix.  Everything is covered, including the street.

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10 minutes ago, wdrag said:

 

Thanks Walt.  I figured intuitively that when the ground gets wet it matches the wet bulb temp so that should be the highest temp freezing rain can fall, wet bulb=32!

Also, when it's falling really hard, rain may not freeze even when the temp is below 32! (by a couple degrees).

 

 

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1 minute ago, NorthShoreWx said:

The Nam forecast soundings I looked at last night and this morning were all over this.  Showed a warm nose this morning with the mid levels cooling to an isothermal sounding for a couple of hours resulting a a turn to snow right around when it did and mixing back before 3pm (right on schedule there's more sleet than snow here now).

I was actually having my doubts about a flip to snow after 12 noon, but the model had it right.

 

Back down to 32 here with a sleet/snow mix.  Everything is covered, including the street.

we thought the NAM might have this ;-) hope it's right about tomorrow too!

 

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1 minute ago, NorthShoreWx said:

The Nam forecast soundings I looked at last night and this morning were all over this.  Showed a warm nose this morning with the mid levels cooling to an isothermal sounding for a couple of hours resulting a a turn to snow right around when it did and mixing back before 3pm (right on schedule there's more sleet than snow here now).

I was actually having my doubts about a flip to snow after 12 noon, but the model had it right.

 

Back down to 32 here with a sleet/snow mix.  Everything is covered, including the street.

Nice surprise for us. Still sleet and snow here and 33.0. 

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