Every 1"+ Event IMBY since 2004-05 (28 events)

[Deck Pic]

I have measured every event IMBY since 2004-05*. I am in NW DC at just over 200', 6 miles north of DCA and 4 miles south of downtown Silver Spring, MD. During this time frame, I recorded 21 events that were less than an inch but more than a Trace. I didn't include those but I have them on file if anyone is interested. I haven't kept track of trace events, only accumulating events.

*There were 1 or 2 smaller ones I was out of town for. Those are included. I had someone else measure for me.

February 5-6, 2010: 22.25"

December 18-19, 2009: 18.5"

February 9-10, 2010: 12.5"

February 11-12, 2006: 11.0"

March 1-2, 2009: 7.5"

January 26, 2011: 6.75"

January 30, 2010: 6.5"

February 24, 2005: 4.5"

February 25, 2007: 4.25"

December 5, 2007: 4.25"

February 2-3, 2010: 4.25"

January 22, 2005: 3.25"

February 28, 2005: 3.25"

December 5-6, 2005: 3.25"

February 13-14, 2007: 2.75"

January 29-30, 2005: 2.5"

January 17, 2008: 2.5"

December 8-9, 2005: 2.25"

January 19, 2005: 2.0"

January 27, 2009: 2.0"

March 7, 2007: 1.75"

January 21, 2007: 1.5"

December 5, 2009: 1.5"

January 7-8, 2010: 1.5"

December 16, 2010: 1.5"

January 12, 2011: 1.5"

February 6-7, 2007: 1.25"

March 8, 2005: 1.0"

Seasonal Totals:

2004-05: 17.0"

2005-06: 17.5"

2006-07: 13.5"

2007-08: 7.0"

2008-09: 10.25"

2009-10: 67.5"

2010-11: 12.5"

[nw baltimore wx]

Wow. Very cool...thank you!

[Bob Chill]

Stark reminder at how rare 6+ inch storms are (in dc proper). Still, even in the nw burbs, 10"+ is pretty rare.

Interesting how the near climo snow winters (except 05-06) featured nothing over 8".

I know this is a super small dataset in the grand scheme but I'll bet if you kept expanding it, the basic trends would remain the same.

Love the data though. Does anyone have season individual even breakdowns for a long period in a concise format? I would really like to dig in.

[PennMan]

Nice data, Matt. I was actually thinking about doing something like this with my snowfall data. (since 01-02) Would be a bit of work though, at almost 70 1"+ events since December 2001.

[Alpha5]

Nice stats, I bet the NYC metro sees double that amount

[WVclimo]

Thanks for posting these, Z.

So, in 7 seasons:

7 storms 6"+

7 storms 3.25"-4.50"

7 storms 1.75"-2.75"

7 storms 1.00"-1.50"

One storm in each of those categories in the same season gives DC a normal winter.

And the 7-year average above 20"? Could be worse.

Big ups to '09-'10 bringing all those totals into balance.

[Deck Pic]

Thanks for posting these, Z.

So, in 7 seasons:

7 storms 6"+

7 storms 3.25"-4.50"

7 storms 1.75"-2.75"

7 storms 1.00"-1.50"

One storm in each of those categories in the same season gives DC a normal winter.

And the 7-year average above 20"? Could be worse.

Big ups to '09-'10 bringing all those totals into balance.

Based on a number of factors I think my norm is around 18-19". Median a bit less.

[ORH_wxman]

Nice stats, I bet the NYC metro sees double that amount

NYC has seen 45 1"+ events in the same time zwyts posted 28 events. So no, not double that amount. If it was, NYC would be closer to Boston as BOS has seen 71 1"+ events in that same time. There is a reason NYC snow climo is a bit closer to DC climo than BOS climo and not "double the amount" of DC...its because its the numbers have always shown that over longer term periods, and even in 7 years that works out.

[Deck Pic]

Nice stats, I bet the NYC metro sees double that amount

of course they do...you guys average like 60" a winter...go back to your forum....run along now

[Deck Pic]

NYC has seen 45 1"+ events in the same time zwyts posted 28 events. So no, not double that amount. If it was, NYC would be closer to Boston as BOS has seen 71 1"+ events in that same time. There is a reason NYC snow climo is a bit closer to DC climo than BOS climo and not "double the amount" of DC...its because its the numbers have always shown that over longer term periods, and even in 7 years that works out.

Alpha5 is not the brightest bulb

[ORH_wxman]

It would be interesting to run the numbers further back for DC because as has been documented many times in this forum, it seems DC has become more feast or famine recently whether by dumb chance or some real reason whether it be atmospheric or technical (measurements).

DC intermediate events were more common before this more current feast/famine period.

[Deck Pic]

It would be interesting to run the numbers further back for DC because as has been documented many times in this forum, it seems DC has become more feast or famine recently whether by dumb chance or some real reason whether it be atmospheric or technical (measurements).

DC intermediate events were more common before this more current feast/famine period.

I livedin Dupont circle and didn't measure every single event and I wanted continuity so I just went back to 2004-05.....but 2002-04 adds another 9 events for certain.......I think 4/per yr average is not far off

[Bob Chill]

I livedin Dupont circle and didn't measure every single event and I wanted continuity so I just went back to 2004-05.....but 2002-04 adds another 9 events for certain.......I think 4/per yr average is not far off

Zwts, this applies to all of your memory posts for snow events. You are the damn rainmain of snowstorms! How do you remember all this stuff? I have a really good memory too but unless it is "memorable" I forget it by the following summer. Maybe I drink too much. lol

[usedtobe]

It would be interesting to run the numbers further back for DC because as has been documented many times in this forum, it seems DC has become more feast or famine recently whether by dumb chance or some real reason whether it be atmospheric or technical (measurements).

DC intermediate events were more common before this more current feast/famine period.

We sure have been feast or famine. The freuqency of 6 inch storms has gone way down as has the frequency of 20-30 inch snowfall years. Now it's 40" inches or more every 7 years or snow with crappy years in between.