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Ian

Jan 22-24 blizzard obs, tracking, nowcasting #2

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Went outside for the morning measurement and it is going to take a while to dig out. Main roads are pretty much single lanes with a few inches on them. Side streets have almost 10 inches on them with drifts near 18". Snow banks made by plows over 2'!

 

Had a couple of 16.8 readings but they were in the minority and were tossed. 

 

DCA at 16 per TWC

 

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Question about these spotter reports:  are these numbers from 6-hour measurements, or are they snow depth?

 

...MONTGOMERY COUNTY...

1 SE MONT VILL:   20.5 809 AM 1/23 TRAINED SPOTTER
GAITHERSBURG:  19.0 738 AM 1/23 COUNTY EMRG MGMT
1 ENE GARR PK    18.0 600 AM 1/23 TRAINED SPOTTER
1 ESE NORBECK   17.6 700 AM 1/23 TRAINED SPOTTER
GERMANTOWN     17.0 636 AM 1/23 PUBLIC

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If memory serves, the totals being reported here are along the lines of what was expected by now.

I believe that is the case. There were some crazy runs with 2 feet by 12Z, but most guidance I think pegged the area at ~12-20" by ghis time. Now we'll see what happens the rest of the day and this evening.

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I got 16" at 8AM so I can verify your measurement.

Cool. Thanks for the verification!

Interesting that we didn't pick up as much as I expected overnight. No complaints - just that it was crushing for a few hours and I figured I'd have measured a couple inches more this morning. Got started off strong but didn't seem to score as well as some others in the deathbands.

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I believe that is the case. There were some crazy runs with 2 feet by 12Z, but most guidance I think pegged the area at ~12-20" by ghis time. Now we'll see what happens the rest of the day and this evening.

 

I think the pace is behind the blockbuster 1/22 GFS runs. But looking back at some of the IWM maps, the older GFS runs were pretty much in line with what we see right now.

We could still catch up, of course :) If the HRRR is correct, we'll end up with final tallies pretty close to the 1/22 GFS runs.

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Shoveled from 8-9am.  Didn't try to get to my usual measuring spot but came up with approx 15.5-16" at 8am (may have been in a slight drift; hard to tell), plus maybe another 1/2"-1" while shoveling.  So, guesstimate of approx 14-17" at 9am on east side of Columbia.

Snow shoveled was rather light/fluffy, just deep. Temp has fluctuated on either side of 22 degrees all morning.

It's all gravy from here.  The sun could come out now and I'd still be happy at this point (words of horror to some, I know).  This will be a minimum 2-day dig-out for many unless you have a team working with you.

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Question about these spotter reports:  are these numbers from 6-hour measurements, or are they snow depth?

 

...MONTGOMERY COUNTY...

1 SE MONT VILL:   20.5 809 AM 1/23 TRAINED SPOTTER

GAITHERSBURG:  19.0 738 AM 1/23 COUNTY EMRG MGMT

1 ENE GARR PK    18.0 600 AM 1/23 TRAINED SPOTTER

1 ESE NORBECK   17.6 700 AM 1/23 TRAINED SPOTTER

GERMANTOWN     17.0 636 AM 1/23 PUBLIC

 

I live in northern Montgomery Village. Drifting makes accurate measurements difficult, but I believe 20.5" is in the ballpark for total snow depth.

We had maybe 1/2 inch on the ground prior to the storm.

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9:00

Heavy snow

22 Degrees

21 inches

5 inches in past 2 hours

 

Just went for a Jebwalk in some of the heaviest snow I have ever seen. Dendrites coming down at an insane rate drops visibility's to 100 yards or so. A neighbor decides he is gong to work regardless. He makes it out of his driveway only to immediately wedge his Jeep up to the undercarraige. I help dig him out. he smartly backs up into his driveway and say's F this. About the only negative I can think of with this storm is the lack of any real wind. I am getting 10-15 MPH winds with minimal drifting. This one is shaping up to be one for the ages.

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HRRR which has nailed this radar so far would give us another 1.5" liquid. Would put central MD close to 36"

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Just cleared 14 inches on snow off my sidewalk. Cleared 5.5 inches last night, so somewhere around 19 inches, although this is definitely not a scientific measurement.

I was running a few inches ahead of DCA all last night so these totals jive with their 16.

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