Boreal Posted February 1, 2011 Share Posted February 1, 2011 I am more of a reader than poster, but i have a question I have been curious about. Does anyone know anything about sleet ratios? In other words, 1 inch of QPF would be about how much sleet? I have a pretty good grasp of snow ratios dealing with temps in the snow growth region and dendrite strength, but I've never heard anything about sleet ratios. Any help is appreciated! I've read in other threads, general 3:1 ration. So, if a correct guideline, 1 inch liquid = 3 inches sleet. Google might help. Link to comment Share on other sites More sharing options...
Noreaster07 Posted February 1, 2011 Share Posted February 1, 2011 i believe its 3:1 ratio. I've read in other threads, general 3:1 ration. So, if a correct guideline, 1 inch liquid = 3 inches sleet. Google might help. 2-3:1 Link to comment Share on other sites More sharing options...
mcgin Posted February 1, 2011 Share Posted February 1, 2011 That appears to be almost all zr for the lehigh valley. :axe: Link to comment Share on other sites More sharing options...
chubbs Posted February 1, 2011 Share Posted February 1, 2011 We lost power for almost 24-hour in that 1994 storm. As I recall temperatures were mainly in the upper 20s and precip was fairly light over a long period which allowed it to freeze completely. Round 2 in this storm has heavy precip so some will not freeze. Link to comment Share on other sites More sharing options...
hip2 Posted February 1, 2011 Share Posted February 1, 2011 Thanks. I'm not sure I like the answer :-) It's close enough to 1:1, although I'm not totally sure. One source said 1.25:1. So it would put us close to 1/2" Link to comment Share on other sites More sharing options...
BucksCO_PA Posted February 1, 2011 Share Posted February 1, 2011 http://www.erh.noaa....i/hist_phi.html once of the worst weather related morning commutes, temps in the low-mid 20's with light rain falling on untreated roads was not a good combination, I-95 quickly turned into a skating rink & had to be shutdown at the height of the morning rush hour, pretty much a nightmare travel wise Link to comment Share on other sites More sharing options...
hazwoper Posted February 1, 2011 Share Posted February 1, 2011 I throw an ob in here. Currently 27.5 I still think surface temps will be colder than modeled. Let's hope I am wrong for those of us here in SE PA Link to comment Share on other sites More sharing options...
al79philly Posted February 1, 2011 Share Posted February 1, 2011 This is what ice storms can do. Mind you, this is from the great ice storm of 98 - not our area. Scary stuff though, Link to comment Share on other sites More sharing options...
Noreaster07 Posted February 1, 2011 Share Posted February 1, 2011 looking at both 18z NAM and 18 GFS Bufkit, sleet ratios will be 2:1 for RDG, ABE, MDT and even up to AVP Link to comment Share on other sites More sharing options...
kpantz Posted February 1, 2011 Share Posted February 1, 2011 My temp has actually gone up a bit in the last hour - from 22.8 to 23.6. Not coincidentally, the clouds have all but moved in for good. Dewpoint is 16. Link to comment Share on other sites More sharing options...
RowanBrandon Posted February 1, 2011 Share Posted February 1, 2011 Have had off and on flurries/light snow for the past couple of hours. Link to comment Share on other sites More sharing options...
White_Mtn_Wx Posted February 1, 2011 Share Posted February 1, 2011 This is what ice storms can do. Mind you, this is from the great ice storm of 98 - not our area. Scary stuff though, Great pic. With family in NH, I saw first hand the destruction. Unreal. Link to comment Share on other sites More sharing options...
NortheastPAWx Posted February 1, 2011 Share Posted February 1, 2011 Temp has been steady around 21. Link to comment Share on other sites More sharing options...
al79philly Posted February 1, 2011 Share Posted February 1, 2011 Here's a neat "Perfect Disaster" episode depicting the ultimate ice storm that I saw a few months ago. http://www.youtube.com/watch?v=PEyfj4yzh7I Link to comment Share on other sites More sharing options...
Noreaster07 Posted February 1, 2011 Share Posted February 1, 2011 Link to comment Share on other sites More sharing options...
kpantz Posted February 1, 2011 Share Posted February 1, 2011 I've been out of the loop most of the day at work in the field. What do you think we are in store for around our parts? Mostly snow for phase 1 overnight into tomorrow morning, probably ending as light IP/ZR with some freezing drizzle throughout the day tomorrow. Total snow round here probably won't exceed 5". Tomorrow night, we pick back up with IP/ZR...at its heaviest in the late morning hours into Wed afternoon, I'm thinking we might see a little slushing which might help the road crews. Not sure about trees/lines, though. May not fare as well. Both morning commutes are probably screwed, especially since tractor trailers like to jackknife in sunny weather on Route 78. That's my best you-can't-hold-me-accountable guess. Link to comment Share on other sites More sharing options...
gakmsg Posted February 1, 2011 Share Posted February 1, 2011 We lost power for almost 24-hour in that 1994 storm. As I recall temperatures were mainly in the upper 20s and precip was fairly light over a long period which allowed it to freeze completely. Round 2 in this storm has heavy precip so some will not freeze. I remember pouring rain ... water running in the streets... at 25 degrees Link to comment Share on other sites More sharing options...
penndotguy Posted February 1, 2011 Share Posted February 1, 2011 Mostly snow for phase 1 overnight into tomorrow morning, probably ending as light IP/ZR with some freezing drizzle throughout the day tomorrow. Total snow round here probably won't exceed 5". Tomorrow night, we pick back up with IP/ZR...at its heaviest in the late morning hours into Wed afternoon, I'm thinking we might see a little slushing which might help the road crews. Not sure about trees/lines, though. May not fare as well. Both morning commutes are probably screwed, especially since tractor trailers like to jackknife in sunny weather on Route 78. Thats not even funny, I was part of that cleanup VD storm ugh. Im not looking forward to the next couple days Link to comment Share on other sites More sharing options...
Quakertown needs snow Posted February 1, 2011 Share Posted February 1, 2011 Mostly snow for phase 1 overnight into tomorrow morning, probably ending as light IP/ZR with some freezing drizzle throughout the day tomorrow. Total snow round here probably won't exceed 5". Tomorrow night, we pick back up with IP/ZR...at its heaviest in the late morning hours into Wed afternoon, I'm thinking we might see a little slushing which might help the road crews. Not sure about trees/lines, though. May not fare as well. Both morning commutes are probably screwed, especially since tractor trailers like to jackknife in sunny weather on Route 78. That's my best you-can't-hold-me-accountable guess. bummer for that nice snow at blue mt Link to comment Share on other sites More sharing options...
Thunder Road Posted February 1, 2011 Share Posted February 1, 2011 Not that it matters at all, but I distinctly remember the NWS point-and-click forecasts being out the night before the VD storm as well, just like tonight. Coincidence? I think not.... Link to comment Share on other sites More sharing options...
Quakertown needs snow Posted February 1, 2011 Share Posted February 1, 2011 in '94 i had metal spiked golf shoes... i used them to walk around outside Link to comment Share on other sites More sharing options...
chubbs Posted February 1, 2011 Share Posted February 1, 2011 I remember pouring rain ... water running in the streets... at 25 degrees We had so many ice storms that winter. I believe you are describing the storm about 10 days later Jan 17 1994. Heavier precip but less tree and powerline damage Link to comment Share on other sites More sharing options...
wederwarrior Posted February 1, 2011 Share Posted February 1, 2011 bummer for that nice snow at blue mt I think conditions will be real nice up there with the first....not so much the second thump (Layer of mess) Link to comment Share on other sites More sharing options...
Porsche Posted February 1, 2011 Share Posted February 1, 2011 18z NAM devistating ice storm 3" of snow 1/2" of sleet and 9/10" of Frz rain no rain 18z GFS 6" of snow 3/4" of sleet 1/2" of fz rain a touch of rain Where can I find these maps for my area, thanks! Link to comment Share on other sites More sharing options...
LVblizzard Posted February 1, 2011 Share Posted February 1, 2011 HRRR snow forecast with a few more hours of light-moderate snow left. Link to comment Share on other sites More sharing options...
chubbs Posted February 1, 2011 Share Posted February 1, 2011 Starting to get a few flurries Link to comment Share on other sites More sharing options...
wederwarrior Posted February 1, 2011 Share Posted February 1, 2011 Both morning commutes are probably screwed, especially since tractor trailers like to jackknife in sunny weather on Route 78. That's my commute, the notorious Sleet Highway. aka Rt. 78 trucks drive like absolute morons trying to match the Route # signs with their speedometers temp 24.3 Link to comment Share on other sites More sharing options...
rickrd Posted February 1, 2011 Share Posted February 1, 2011 in '94 i had metal spiked golf shoes... i used them to walk around outside wonder how the new "Soft Spikes" will work. Link to comment Share on other sites More sharing options...
Noreaster07 Posted February 1, 2011 Share Posted February 1, 2011 Scroll down left side to PA (click), then scroll down further on left side to sleect location there isn't one for Lancaster so you will have to use MDT and RDG and sort of average that out. Further below on the left you select the model type (GFS/NAM) and below that which model run. http://coolwx.com/cgi-bin/getbufr.cgi?region=&stn=CWSA&model=nam&time=current&field=DEF Link to comment Share on other sites More sharing options...
Porsche Posted February 1, 2011 Share Posted February 1, 2011 Scroll down left side to PA (click), then scroll down further on left side to sleect location there isn't one for Lancaster so you will have to use MDT and RDG and sort of average that out. Further below on the left you select the model type (GFS/NAM) and below that which model run. http://coolwx.com/cg...rrent&field=DEF Thanks so much appreciate it, wish there was one for Lancaster. Thanks Link to comment Share on other sites More sharing options...
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