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Feb 6-7 icing


ORH_wxman
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1 minute ago, dendrite said:

Interesting ob...


METAR KBUF 061754Z 07008KT 4SM -RA BR FEW007 BKN015 OVC030 00/M01 A2988 RMK AO2
                 RAB53FZRAE53 SLP128 DEPTH OF GLAZE 2/10 INCH P0015 60057 I1005 I6037 T00001006
                 10000 21028 58034 $ =

 

They augmented 2/10" of glaze in the comments, but the glaze accretion algorithm has 0.37"...almost twice as much.

Yeah i thought that was strange. The conditions would seem to argue for the higher number. 

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7 minutes ago, OSUmetstud said:

Theres two differerent numbers. I dont really understand why it would be so inefficient...35 percent?  Its been cold and breezy. Decent rates but still. 

Def does sound low. 35% is way below the 10th percentile for accretion efficiency. 

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49 minutes ago, dendrite said:

Here's the automated accretion breakdown...

14z 28/25 ZR 0.05" w.e. / 0.08" glaze
15z 29/26 ZR 0.11" w.e. / 0.09" glaze
16z 29/28 -ZR 0.09" w.e. / 0.07" glaze
17z 31/29 ZR 0.17" w.e. / 0.08" glaze
18z 32/31 -R 0.15" w.e. / 0.05" glaze

AIT

as temps got marginal (when u include maximum solar angle 17z /18z ) and highest rates? , % of accretion went to 45% and 33%

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6 hours ago, WinterWolf said:

We pretty much knew this last week...the handwriting was on the wall then for most spots.  High elevations in the NW and NE will have a lil ice.

Yeah, and the snowy solution for next week that was talked about last week will disappoint SNE as well.

Maybe March will pull through with a 12"+ storm.

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1 hour ago, STILL N OF PIKE said:

AIT

as temps got marginal (when u include maximum solar angle 17z /18z ) and highest rates? , % of accretion went to 45% and 33%

Dude. We were discussing the difference between the 0.37 and 2/10 inches being reported. I was question the 2/10ths not the 0.37. The 0.37 with 0.57 qpf is reasonable. 0.20 with 0.57 qpf is very unusual and not typical. 

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