MikeB_01

3k NAM with 4 in snow before the rain.

HRRR has .75 QPF before the change over to rain. Lots of moisture

HRRR (12z - 36hr) showing a really go thump at the onset.

I think the NWS has a good handle on this one. 2-3 for AGC. If business is booming early on, then we might get 4. If its a bust, we are somewhere around 1. Also a chance for some freezing rain. Regardless, impacts for tomorrow morning's commute will be high.

NWS forecast holds steady. Actually increased the amount of Frz Rain expected WINTER WEATHER ADVISORY IN EFFECT FROM 1 AM TO NOON EST WEDNESDAY... * WHAT...Mixed precipitation expected. Total snow accumulation of 1 to 3 inches and ice accumulation up to two tenths of an inch expected. * WHERE...Portions of southwest and western Pennsylvania, east central Ohio and northern and northern panhandle of West Virginia. * WHEN...From 1 AM to noon EST Wednesday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Please report snow or ice by calling 412-262-1988, posting to the NWS Pittsburgh Facebook page, or using Twitter @NWSPittsburgh

GFS is not impressed .

Wicked RZ signal from the NAM.

I was kind of thinking the same thing. It will all depend on how amplified the system is aloft. If the 850mb temps are coming in crazy, then we will get mostly sleet. But if they hold off like they did for yesterday’s system, then we might be in for that 2-4 in surprise .

Not a super deep DGZ but the omega is good. Should be coming down pretty good at that point. A nice front end thump .

How bad has the NAM been at temp profiling this winter? 12Z nam still had freezing rain at the onset of the precip tonight. My house in already at 33°. Well before any precip makes it to the area.

lock it in lol

Hard to get snow with a southern-dominated jet causing the +NAO.

Im looking through some of my CoCoRaHS measurements. Biggest snowfalls I have recorded was the recent one Feb 11 (2.5") and Jan 13 (2.5") My first day of participating was Jan 13, so my measurements don't go back any further than that.

HRRR still showing snow into late morning tomorrow. .

True... I don’t think we get that 3+ anyway. 3k nam looks too impressive. .

Hires models looking a little better for tonight 12 z HRRR and 3k NAM coming in with 3+ for the first wave slider.

Does every system have to cut through Ohio? Like watching a bunch of bowling balls roll through

monday morning commute might be a little dicey. Not necessarily because of the snow, but I think there may be a little freezing drizzle hanging around. NAM soundings seem to indicate it at least

YES! Just saw the forecast discussion. Keeping the threat of a few rumbles in there. Would be a nice treat to hear a little

Digital snow lol I just really wish that it wasnt the FV3. I haven't seen the verification numbers on this model, but i have a hard time thinking that this is the model that will replace the current GFS. Never seems to perform well. Maybe the blind squirrel will find the nut with this one.

1.7 in storm total. Picked up an additional inch since 7 am.

Would have to agree with you there. 5 seems way to high even for southern AGC. .

Yea people just don’t get that. Takes a lot of salt to melt the snow when it’s this cold. I don’t remember the exact science, but I’m pretty sure that a brine solution of 50/50 water and salt, lowers the melting point down to 0°. Takes a lot of salt to get to a 50/50 solution. .

Decent returns on the radar moving towards the metro. .

.7 in when I measured at 7. .06 water equivalent. Doesn’t seem like the ratio I was expecting. .