NorthHillsWx

February 18-19 MAJOR Ice Storm Threat

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Eden, NC:
Currently 34.9/22.8, a change of +1.7/-0.5 in the past two hours. Humidity at 61% and barometer holding steady at 29.67 under cloudy skies, imby.
KSIF is reporting 35 and overcast at 3800
KMTV is reporting 32 and overcast at 5000

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So what us the thermodynamic mechanism where clouds cause the nighttime temp to rise?  I can understand them slowing the rate of cooling, but how are they warming? 

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Lest we forget, the Triad is expected to have up to 25 mph gusts in the morning and through tomorrow afternoon.  So the damage effect of 0.25” of ice with those winds is about the same as 0.50” of ice with calm winds.

We’re turning our backs to the supposedly dead villain when he could easily pop up and attack again.

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7 minutes ago, magpiemaniac said:

Lest we forget, the Triad is expected to have up to 25 mph gusts in the morning and through tomorrow afternoon.  So the damage effect of 0.25” of ice with those winds is about the same as 0.50” of ice with calm winds.

We’re turning our backs to the supposedly dead villain when he could easily pop up and attack again.

Not sure anyones turning their backs on anything.  Even the "pulling back on the reigns a bit" call maps have the triad and areas north of there with .25 of ice....thats nothing to sniff at.  Its just not what has been called for for a while now.  Which has kinda been the modus operandi this winter.  But who knows what is gonna happen.  Temps could tank and could still reach those totals.  Everyone in the warning areas should be prepared for the worst and hope that mother nature hits us with a torch and nobody gets this destructive ice.

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2 minutes ago, Blue_Ridge_Escarpment said:

Already a solid glaze on everything here 

You're in deep up there I'm afraid. I'm slowly dropping but very light prexip so far. 34.3/27.6

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32 minutes ago, cbmclean said:

So what us the thermodynamic mechanism where clouds cause the nighttime temp to rise?  I can understand them slowing the rate of cooling, but how are they warming? 

Once the sun sets, the Earth emits outgoing longwave radiation. A layer of clouds blocks that outgoing longwave radiation, trapping the heat in. As the radiation continues, temperatures can actually warm a decent amount.

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Had sleet mix with the heavier band that moved through but due to the splotchy nature of the precip, I'm still at 34. It just isn't dropping much here 

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Precipitation started as rain at my location just west of Eden within the past ten minutes and the temperature and dew point have responded. 

Was: 33.6/23.1 at 1:50am

Now: 31.5/27.6 2:15am

Wind: NNE -  8

 

 

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Since my previous post my temperature has dropped to 29.8 which is already lower than the lowest temperature reached during the last event which was 30.2. The dew point is at 27.9, so there's still room for the temperature to drop lower. There's a light glaze on all elevated surfaces already. Radar is filling in quickly and looks good down stream for some significant precipitation amounts in this area by the time all is said and done. This will no doubt be a more severe ice storm than the last one for my area.

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32/30.5 in Mebane. It took forever to reach the freezing mark. Although I am a fan of all winter weather, hopefully this will not be a Dec. 2002 type situation. I still have horrible memories from that.

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31 with zr here NW of raleigh. 

Forecast (No time for a map with a 2 month old lol) :

Roxboro:  .75 to 1

GSO: .5 to .75

Hillsborough: .5

Durham: .3

HKY .2

RDU:  .1 to .25 (more in NW Wake)

CLT: Trace

 

 

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