hudsonvalley21

Elevation dependent is definitely the factor. I have 1/3” of slush here at 125’ of elevation.

Wow big difference, 1/3 of an inch of slush and my road wasn’t totally covered.

Light snow 32/27 currently. A coating on the ground.

So you did speak to Santa

1.68” here for the total yesterday.

Thanks Walt, something to keep an eye on.

I think he did.

I’ll see if I can shovel it out

0.63” here, light rain currently. 36/35

DCA _ NYC _ BOS __ ORD _ ATL _ IAH __ DEN _ PHX _ SEA 0.6 0.5 0.2 0.2 0.7 1.0 0.2 0.9 0.1 DCA _ NYC _ BOS __ ORD _ DTW _ BuF __ DEN _ SEA _ BTV 17” 21” 28” 26” 24” 102” 51” 4” 84”

Just a dusting here at 125’ in elevation. Had 1.22” yesterday in precipitation. 1.17” since midnight today. So 2.39 in the Davis. I wonder if at the top of Storm King mtn. at 1,220’ has the 12” there too.

NJZ002-NYZ067>070-221200- /O.NEW.KOKX.WW.Y.0006.241122T0000Z-241122T1500Z/ Western Passaic-Orange-Putnam-Rockland-Northern Westchester- 326 PM EST Thu Nov 21 2024 ...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 10 AM EST FRIDAY... * WHAT...Snow expected. Snowfall accumulations will be highly elevation dependent. Total snow accumulations of 2-4 inches at elevations above 500 feet, with the highest amounts above 1000 feet. Elsewhere, accumulations will likely be less than 2 inches. * WHERE...In New Jersey, Western Passaic County. In New York, Northern Westchester, Orange, Putnam, and Rockland Counties. * WHEN...From 7 PM this evening to 10 AM EST Friday. The heaviest snow will likely fall between 11 PM and 6 AM. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes. Isolated tree damage and power outages are possible due to heavy wet snow load.

The elevation is key with this event.

Upton’s thoughts, A section of their AFD CAMs and regional models have diverged somewhat on the position of the movement of the low tonight. Some of the CAMs bring the center of the low just north of our area and a little to the east into the early night before having it retrograde to our west in Upstate New York while other just stick with tracking the low to our northwest. The more northeasterly track, regardless will only occur this evening into early tonight before bumping west. With the low tracking north of us this evening, cooler air will take over this evening with temperatures near or below freezing in interior locations north and west of NYC. Prior to this, temperatures will be in the 40s. A transition from rain to snow is expected this evening for interior areas north and west of NYC, but given the warm temperatures prior, snowfall may struggle to accumulate. Its possible we could see a few heavy bands of snow with snowfall rates around 1-2"/hr this evening into early tonight indicated by the 00Z HREF and a saturated dendritic growth zone before the precip gets cut off by a dry pocket of air that moves in when the low retrogrades westward into upstate New York. This dry air is easiest to see when looking at model soundings or at model 700 mb relative humidity. Higher elevations in interior locations northwest of NYC will most likely see accumulations of 1-4 inches. Western Passaic, Orange and Putnam Counties are now highlighted in the HWO for this potential. However, most of the interior northwest of NYC is at lower elevation and only a trace to 0.5" is expected due to warmer ground melting the snow and a short window for snow banding before the precip becomes much lighter from dry air intrusion. Snow ratios are also expected to be on the low side, further contributing to lower snow accumulations compared to what some of the CAMs are producing with 10:1 Snowfall.

A section of Upton’s AFD, CAMs and regional models have diverged somewhat on the position of the movement of the low tonight. Some of the CAMs bring the center of the low just north of our area and a little to the east into the early night before having it retrograde to our west in Upstate New York while other just stick with tracking the low to our northwest. The more northeasterly track, regardless will only occur this evening into early tonight before bumping west. With the low tracking north of us this evening, cooler air will take over this evening with temperatures near or below freezing in interior locations north and west of NYC. Prior to this, temperatures will be in the 40s. A transition from rain to snow is expected this evening for interior areas north and west of NYC, but given the warm temperatures prior, snowfall may struggle to accumulate. Its possible we could see a few heavy bands of snow with snowfall rates around 1-2"/hr this evening into early tonight indicated by the 00Z HREF and a saturated dendritic growth zone before the precip gets cut off by a dry pocket of air that moves in when the low retrogrades westward into upstate New York. This dry air is easiest to see when looking at model soundings or at model 700 mb relative humidity. Higher elevations in interior locations northwest of NYC will most likely see accumulations of 1-4 inches. Western Passaic, Orange and Putnam Counties are now highlighted in the HWO for this potential. However, most of the interior northwest of NYC is at lower elevation and only a trace to 0.5" is expected due to warmer ground melting the snow and a short window for snow banding before the precip becomes much lighter from dry air intrusion. Snow ratios are also expected to be on the low side, further contributing to lower snow accumulations compared to what some of the CAMs are producing with 10:1 Snowfall.