janetjanet998 Posted January 31, 2021 Share Posted January 31, 2021 LOT up to 3.1 so 2 inches the past 3 hours Link to comment Share on other sites More sharing options...
Chicago Storm Posted January 31, 2021 Share Posted January 31, 2021 1 minute ago, janetjanet998 said: I believe that is snow depth not sure what they started with 4-5ish ???? 4" was the starting point today. Which means there was a max depth of 4.4" prior to this event. Link to comment Share on other sites More sharing options...
janetjanet998 Posted January 31, 2021 Share Posted January 31, 2021 AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE, IL 900 PM CST SAT JAN 30 2021 UPDATE 858 PM CST MUCH OF THE GOING FORECAST IS IN GOOD SHAPE. ROLLING ADJUSTMENTS WITH OBSERVATIONAL TRENDS THIS EVENING INCLUDE FOR OGLE, LEE, LASALLE, LIVINGSTON, AND SOUTHERN FORD COUNTIES, WHERE HAVE HELD ONTO MIXED PRECIPITATION LONGER AND DIMINISHED SNOW AMOUNTS. ELSEWHERE CONTINUED SNOW, AT TIMES HEAVY, ALONG WITH BLOWING SNOW REMAINS IN THE FORECAST. FORECAST AMOUNTS IN THESE AREA ARE GENERALLY THE SAME. SATELLITE AND RADAR IMAGERY DEPICT THE CENTER OF THE UPPER TO MID-LEVEL CIRCULATION OVER NORTHEAST MISSOURI/FAR SOUTHWEST ILLINOIS AND MOVING SLOWLY NEAR DUE EAST. A SOLID MOISTURE PUMP IS AHEAD OF THIS WITH PRECIPITABLE WATER AT 0.86 ON THE 00Z ILX SOUNDING, IN THE TOP 5TH PERCENTILE FOR TIME OF YEAR. ALSO WITH THE 35-45 KT LOW-LEVEL JET HAS BEEN A WARM NOSE, SAMPLED AT A SURPRISINGLY HIGH +4C AND +5C ON THE 00Z DVN AND ILX SOUNDINGS, RESPECTIVELY. THIS WARM NOSE HAS ONLY SLIGHTLY EASED THUS FAR ACROSS THE WESTERN AND SOUTHERN FORECAST AREA, WITH RADAR CORRELATION COEFFICIENT INDICATING THE MELTING HYDROMETEOR LAYER FROM OGLE/LEE COUNTIES SOUTHEAST TO LIVINGSTON/FORD COUNTIES, AND AT TIMES PROTRUDING NORTH OF THAT REFLECTING HOW STOUT THE LLJ IS TO AT TIMES OFFSET DYNAMIC COOLING. IT'S JUST TO THE EAST AND NORTHEAST OF THIS ZONE IN PARTS OF THE SOUTHERN CHICAGO SUBURBS, I-57 CORRIDOR, AND INTO NORTHWEST INDIANA WHERE SOME OF THE HEAVIEST SNOW HAS BEEN. AN EXAMPLE OF THAT GRADIENT IS REFLECTED IN THE FACT THAT RANTOUL (TIP) HAS BEEN REPORTING RAIN THE WHOLE EVENT AND THEN NORTHEAST OF THERE ONLY 30 MILES, MILFORD, IL HAS REPORTED FOUR INCHES OF SNOW AS OF 830 P.M. SO HAVE HELD ONTO A LONGER MIX AND DIMINISHED SNOW AMOUNTS SOME ALONG AND TO THE SOUTH OF THAT LINE. THE GREATEST DIMINISHING WAS OF A COUPLE INCHES AND THAT CAME IN PARTS OF WESTERN LEE AND WESTERN AND SOUTHERN LASALLE AND LIVINGSTON COUNTIES. WILL TWEAK THIS WORDING IN THE UPCOMING WINTER HEADING UPDATE, BUT NO CHANGES PLANNED TO TYPE OF HEADLINES AT THIS JUNCTURE, AS THE MESSAGE IS STILL CONVEYED WELL. IT CONTINUES TO POUR SNOW ACROSS MUCH OF THE CHICAGOLAND AREA AND INTO NORTHWEST INDIANA ON DEEP ISENTROPIC ASCENT AND TAPPING INTO SOME STEEPER LAPSE RATES ABOVE 550 MB. THESE BETTER LAPSE RATES, ALONG WITH JUST MORE ENHANCED LEFT EXIT REGION JET DYNAMICS, ARE INTO THE KANKAKEE RIVER VALLEY AREA AND NORTHWEST INDIANA. THIS IS WHERE SOME MORE FREQUENT 1/4 TO 1/2 SM VISIBILITIES HAVE BEEN OBSERVED AT AUTOMATED STATIONS OR REPORTED. TRAVEL IS HAZARDOUS ACROSS MUCH OF THE AREA TONIGHT AND THAT SHOULD CONTINUE, SO GOING MESSAGING CADENCE ON THAT WILL CONTINUE. STILL LOOKS LIKE DIMINISHING OF SNOW INTENSITY WILL HAPPEN THROUGH THE OVERNIGHT, WITH SOME POSSIBLE MIX TO DRIZZLE/FREEZING DRIZZLE. NO CHANGES MADE TO SUNDAY AT THIS TIME. MTF 1 Link to comment Share on other sites More sharing options...
Winter Man Posted January 31, 2021 Share Posted January 31, 2021 Absolute pound town. Shades of GHD I intensity with this one. Snow has begun to cover I-90/94 downtown. Link to comment Share on other sites More sharing options...
tuanis Posted January 31, 2021 Share Posted January 31, 2021 20 minutes ago, A-L-E-K said: Finally looks like legit winter on the lakefront 2 Link to comment Share on other sites More sharing options...
madwx Posted January 31, 2021 Share Posted January 31, 2021 Still coming down but can’t get a large flake size. Wind is howling out there which will make measuring futile Link to comment Share on other sites More sharing options...
Jim Martin Posted January 31, 2021 Share Posted January 31, 2021 Link to comment Share on other sites More sharing options...
TheNiño Posted January 31, 2021 Share Posted January 31, 2021 30 minutes ago, A-L-E-K said: Delivering either way Same up here in the Kenosha/Racine area. Lake Michigan is my backyard. Getting some large drifts already. This is the end of my driveway right now and we’re just getting started. I am thoroughly enjoying myself. 4 Link to comment Share on other sites More sharing options...
Gino27 Posted January 31, 2021 Share Posted January 31, 2021 Battled virga for about 45 mins but am snow now! Link to comment Share on other sites More sharing options...
StormfanaticInd Posted January 31, 2021 Share Posted January 31, 2021 Looks to be over for Indy. 1 Link to comment Share on other sites More sharing options...
MIstorm97 Posted January 31, 2021 Share Posted January 31, 2021 35 minutes ago, A-L-E-K said: Being taken to the cleaners. Jelly of this 1 Link to comment Share on other sites More sharing options...
Jim Martin Posted January 31, 2021 Share Posted January 31, 2021 Link to comment Share on other sites More sharing options...
madwx Posted January 31, 2021 Share Posted January 31, 2021 1.6 inches at the MSN airport as of 9 pm Link to comment Share on other sites More sharing options...
Baum Posted January 31, 2021 Share Posted January 31, 2021 interested to see ratios. Does not seem 7:1 or 9:1 ratio. Link to comment Share on other sites More sharing options...
Hoosier Posted January 31, 2021 Author Share Posted January 31, 2021 7 minutes ago, Baum said: interested to see ratios. Does not seem 7:1 or 9:1 ratio. I went out to get a head start on some shoveling and measured 2.5" about 40 minutes ago. It is ripping so probably topping 3" now. The snow is kind of a sugary consistency but with some density. Could make a snowball in my hand but it's not that great for packing. Not overly wet at all. 1 Link to comment Share on other sites More sharing options...
frostfern Posted January 31, 2021 Share Posted January 31, 2021 18 minutes ago, Gino27 said: Battled virga for about 45 mins but am snow now! Still dealing with "heavy virga" overhead here. Getting some pixie flurries with composite 25 dbz overhead. Link to comment Share on other sites More sharing options...
rickymortyx Posted January 31, 2021 Share Posted January 31, 2021 22 minutes ago, StormfanaticInd said: Looks to be over for Indy. rain? Link to comment Share on other sites More sharing options...
cyclone77 Posted January 31, 2021 Share Posted January 31, 2021 Snow is quite light as radar returns have really weakened. Looks like long-duration light snows from here on out. Link to comment Share on other sites More sharing options...
Jim Martin Posted January 31, 2021 Share Posted January 31, 2021 1 Link to comment Share on other sites More sharing options...
janetjanet998 Posted January 31, 2021 Share Posted January 31, 2021 snow mixing in now here on the NW side of PIA Link to comment Share on other sites More sharing options...
janetjanet998 Posted January 31, 2021 Share Posted January 31, 2021 CHICAGO-OHARE HVY SNOW 30 27 88 E20G29 29.85F VSB 1/4 1 Link to comment Share on other sites More sharing options...
frostfern Posted January 31, 2021 Share Posted January 31, 2021 5 minutes ago, Hoosier said: I went out to get a head start on some shoveling and measured 2.5" about 40 minutes ago. It is ripping so probably topping 3" now. The snow is kind of a sugary consistency but with some density. Could make a snowball in my hand but it's not that great for packing. Not overly wet at all. Something I've noticed is that the ratio can depend as much on wind and crystal structure as temperature. Dendrite-dominate lake effect that falls straight down in light wind can be much higher ratio at 30 degrees than wind-blown plate-dominant synoptic snows at 27 degrees. I have seen 14:1 ratio with massive aggregate flakes even with a temperature of 30, provided there isn't a lot of wind and the depth is only a few inches. Of course, once you get a depth of more than 4 inches, even dendrite-dominant large-aggregate snowpack will compress quickly to a 10:1 ratio if the temperature is anywhere near freezing. It's usually under 4 inch snowfalls that can have a lot of variability based on crystal structure and wind. Once you get a lot of depth there's more compression due to weight and so the ratio's become more purely temperature dependent. 3 Link to comment Share on other sites More sharing options...
Jackstraw Posted January 31, 2021 Share Posted January 31, 2021 Back to full +SN now. Much bigger flakes now. Link to comment Share on other sites More sharing options...
janetjanet998 Posted January 31, 2021 Share Posted January 31, 2021 KORD 310351Z 10017G25KT 1/4SM R10L/5000V5500FT +SN FZFG VV006 M01/M03 A2985 RMK AO2 SLP115 DRSN SNINCR 1/8 P0003 T10111028 KMDW 310353Z 10015G27KT 3/4SM R31C/4000V5000FT -SN BR VV006 M01/M03 A2986 RMK AO2 PK WND 08027/0347 SLP122 SNINCR 1/6 DRSN P0002 T10111028 1 Link to comment Share on other sites More sharing options...
frostfern Posted January 31, 2021 Share Posted January 31, 2021 Well, the snow finally started reaching the ground here. Had a solid 2 hours of virga and flurries. Link to comment Share on other sites More sharing options...
Jackstraw Posted January 31, 2021 Share Posted January 31, 2021 Besides the fact me and the dogs are now in trouble think that little break cost me an inch or 2. Heading back wsw now, 1/4 mile vis again. Seriously half dollars Link to comment Share on other sites More sharing options...
Chicago Storm Posted January 31, 2021 Share Posted January 31, 2021 Just went out for a drive, and conditions were as expected. Probably the best period of snow I've see since the Nov 25-26th 2018 winter storm, and before that back in 2015. 2 Link to comment Share on other sites More sharing options...
sbnwx85 Posted January 31, 2021 Share Posted January 31, 2021 Got an inch in the ground after about two hours of snow. If we can keep this pace up we should get to about 5 inches by 12z. Link to comment Share on other sites More sharing options...
Chicago Storm Posted January 31, 2021 Share Posted January 31, 2021 ORD is somewhere over 3" thus far. Up over 3" here as well. Link to comment Share on other sites More sharing options...
Baum Posted January 31, 2021 Share Posted January 31, 2021 2 minutes ago, Chicago Storm said: Just went out for a drive, and conditions were as expected. Probably the best period of snow I've see since the Nov 25-26th 2018 winter storm, and before that back in 2015. easy. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now