Chicago Storm Posted December 28, 2017 Share Posted December 28, 2017 Tomorrow is looking interesting with guidance shifting north. Looks like a solid period of snow, with 2-5" looking possible across the area. Link to comment Share on other sites More sharing options...
RCNYILWX Posted December 28, 2017 Share Posted December 28, 2017 Tomorrow's clipper looking very good on 12z NAM runs from eastern IA, QCA, north central IL, west central and south Chicago metro into northern and central IN. Very deep DGZ, good lift from a stronger modeled mid-level wave through the upper half of the deep DGZ. Unlike Christmas Eve, this should actually have higher than average ratios. Liking the short range trends for this one for a swath of mid to higher end advisory to locally lower end warning criteria snow. Sent from my SM-G935V using Tapatalk Link to comment Share on other sites More sharing options...
CoachLB Posted December 28, 2017 Share Posted December 28, 2017 I will take RGEM for $100 Alex. Link to comment Share on other sites More sharing options...
Radtechwxman Posted December 28, 2017 Share Posted December 28, 2017 12z gfs and rgem are very nice. Wider swath of heavier snows. Would be nice to spread the wealth instead of threading the needle. Link to comment Share on other sites More sharing options...
OrdIowPitMsp Posted December 28, 2017 Share Posted December 28, 2017 Measured 0.7" before leaving for work a couple hours ago. Snow winding down now so probably around an inch total. Slightly less then expected but should help usher in a new round of cold air. Link to comment Share on other sites More sharing options...
Jonbo Posted December 28, 2017 Share Posted December 28, 2017 Needle threading hard for me this weekend. NAM scrapes maybe an inch, GFS dumps around 6". Link to comment Share on other sites More sharing options...
michsnowfreak Posted December 28, 2017 Share Posted December 28, 2017 2 hours ago, buckeye said: Hard to imagine a north trend in this pattern,.. But then again if it means a miss for CMH and a hit for Detroit I"d never bet against it. The north trend was a bit surprising with the cold. Detroit is definitely the hot spot for synoptic snow lately, but I cannot see this missing CMH. Realistically, this will give us some more snow, but you should do better. Link to comment Share on other sites More sharing options...
Hoosier Posted December 28, 2017 Author Share Posted December 28, 2017 Think I may get a few inches tomorrow, but a bit nervous in case it slips farther south. We will need to launch an investigation if Detroit jackpots. Link to comment Share on other sites More sharing options...
Hoosier Posted December 28, 2017 Author Share Posted December 28, 2017 Looks like the clock is ticking to get Maue's free Euro maps. Now you have to sign up for a free trial. Unfortunate. Link to comment Share on other sites More sharing options...
hlcater Posted December 28, 2017 Share Posted December 28, 2017 Just now, Hoosier said: Looks like the clock is ticking to get Maue's free Euro maps. Now you have to sign up for a free trial. Unfortunate. Given that he was the only one offering that sort of data for free, the clock was ticking from the very beginning. ECMWF probably came down on him for that. Link to comment Share on other sites More sharing options...
Hoosier Posted December 28, 2017 Author Share Posted December 28, 2017 There is still free Euro stuff at weather.us Link to comment Share on other sites More sharing options...
CoachLB Posted December 28, 2017 Share Posted December 28, 2017 14 minutes ago, Hoosier said: Looks like the clock is ticking to get Maue's free Euro maps. Now you have to sign up for a free trial. Unfortunate. $10 a month. Link to comment Share on other sites More sharing options...
Radtechwxman Posted December 28, 2017 Share Posted December 28, 2017 12z euro came a bit north but closer to where gfs/gem are. NAM still seems to be north outlier. Can I post the snow map? Link to comment Share on other sites More sharing options...
Hoosier Posted December 28, 2017 Author Share Posted December 28, 2017 7 minutes ago, StormChaser4Life said: 12z euro came a bit north but closer to where gfs/gem are. NAM still seems to be north outlier. Can I post the snow map? Post away... technically it's still free lol Link to comment Share on other sites More sharing options...
buckeye Posted December 28, 2017 Share Posted December 28, 2017 45 minutes ago, Hoosier said: Think I may get a few inches tomorrow, but a bit nervous in case it slips farther south. We will need to launch an investigation if Detroit jackpots. Lol Collusion? Link to comment Share on other sites More sharing options...
Radtechwxman Posted December 28, 2017 Share Posted December 28, 2017 Here is the run total snow accumulation through 12z Sat Link to comment Share on other sites More sharing options...
Hoosier Posted December 28, 2017 Author Share Posted December 28, 2017 I saw this posted on that new site. Last sentence in particular is key, so until someone says otherwise, feel free to post Euro maps from there. First, we are launching a “Personal Forecaster” service for $10/month or $99/year that will provide a wide variety and always growing selection of weather models and data including ECMWF + EPS, GFS + GEFS, NAM + WRF, Canadian GEPS & GEM & RGEM, HRRR, UKMET, and CFSv2. If there is something obvious missing that you need or want, then Dr. Maue will be happy to code it up and provide it to everyone. You can compare model runs, create animated GIFS and download images to share on social media and blogs including the ECMWF. Link to comment Share on other sites More sharing options...
Radtechwxman Posted December 28, 2017 Share Posted December 28, 2017 12 minutes ago, Hoosier said: I saw this posted on that new site. Last sentence in particular is key, so until someone says otherwise, feel free to post Euro maps from there. First, we are launching a “Personal Forecaster” service for $10/month or $99/year that will provide a wide variety and always growing selection of weather models and data including ECMWF + EPS, GFS + GEFS, NAM + WRF, Canadian GEPS & GEM & RGEM, HRRR, UKMET, and CFSv2. If there is something obvious missing that you need or want, then Dr. Maue will be happy to code it up and provide it to everyone. You can compare model runs, create animated GIFS and download images to share on social media and blogs including the ECMWF. What site is this for? I'm paying 15 a month now for f5weather Link to comment Share on other sites More sharing options...
snowlover2 Posted December 28, 2017 Share Posted December 28, 2017 2 minutes ago, StormChaser4Life said: What site is this for? I'm paying 15 a month now for f5weather weathermodels.com Link to comment Share on other sites More sharing options...
CoachLB Posted December 28, 2017 Share Posted December 28, 2017 Tried to sign up. Server erro unable to process. Link to comment Share on other sites More sharing options...
CoachLB Posted December 28, 2017 Share Posted December 28, 2017 Link to comment Share on other sites More sharing options...
hlcater Posted December 28, 2017 Share Posted December 28, 2017 Real nice band swinging through right now. Moderate snow with the best dendrites I've seen from this system with visibility between 1/4 and 1/2 mile. Looks like it should taper through the rest of the day afterwards. Probably have 0.8-1.0" so far, about on target. Link to comment Share on other sites More sharing options...
Radtechwxman Posted December 28, 2017 Share Posted December 28, 2017 This system today is kind of priming our atmosphere for tmrw. So hopefully we won't waste a ton of our precip shield into saturation. The air is so dry here. Would be seeing moderate to heavy snow today if it weren't for it. Strong returns on radar but RH is barely over 60% Link to comment Share on other sites More sharing options...
Radtechwxman Posted December 28, 2017 Share Posted December 28, 2017 2 minutes ago, NWLinnCountyIA said: Real nice band swinging through right now. Moderate snow with the best dendrites I've seen from this system with visibility between 1/4 and 1/2 mile. Looks like it should taper through the rest of the day afterwards. Probably have 0.8-1.0" so far, about on target. Are you in that band in SE Iowa? Link to comment Share on other sites More sharing options...
Hoosier Posted December 28, 2017 Author Share Posted December 28, 2017 Very deep DGZ progged tomorrow, especially in the northern part of the snow area, but a significant amount of lift is outside the zone for a portion of the event. Also a bit breezy aloft in part of the DGZ so it's not clear to me about what to expect with ratios. Link to comment Share on other sites More sharing options...
hlcater Posted December 28, 2017 Share Posted December 28, 2017 5 minutes ago, StormChaser4Life said: Are you in that band in SE Iowa? Cedar Rapids, given the similarities in returns I assume they have similar ground conditions as well. I really do wish I was in that band over Chariton, in south central Iowa, this morning though. That thing had 35dbz returns. Link to comment Share on other sites More sharing options...
Hoosier Posted December 28, 2017 Author Share Posted December 28, 2017 Gino's thoughts on ratios tomorrow Thermodynamically, forecast soundings do depict the presence of a deep dendritic growth zone (DGZ), particularly over northern portions of the CWA. Area with the deepest DGZ over northern CWA looks to be in area of weaker forcing, largely above the DGZ. While not as deep, a more favorable juxtapositioning of the stronger omega with the DGZ could allow for higher ratio/fluffier snow over the central/southern portions of the CWA. In the area of heaviest totals, wouldn`t be surprised to see snow:liquid ratios at or above 20:1. Generally thinking a 2-4" snowfall from I-88/290 south tapering to an inch or so along the WI/IL border. Wouldn`t rule out isolated totals up to around 5" along/south of the I-80 corridor, particularly if f-gen circulations are stronger/deeper than currently progged or if SLRs end up higher than forecast. Link to comment Share on other sites More sharing options...
snowlover2 Posted December 28, 2017 Share Posted December 28, 2017 18z NAM came south. More in line with the rest. Link to comment Share on other sites More sharing options...
Jackstraw Posted December 28, 2017 Share Posted December 28, 2017 18z NAM ramped totals up too. Imagine that Link to comment Share on other sites More sharing options...
Jim Martin Posted December 28, 2017 Share Posted December 28, 2017 25 minutes ago, Jackstraw said: 18z NAM ramped totals up too. Imagine that Link to comment Share on other sites More sharing options...
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