Snow Depth Days
of the Northeast: 1998-1999
Daily/Monthly Data
The following table summarizes the snow fall and depth days from sites
that posted that data on the old wxobs-sne
mailing list. If people also prepare Web pages for daily information for
their site, I'll include links to them. Cells under the "snow" column are
the snowfall for the site in that month, under "SDD" are the depth days
for the month.
Location |
October |
November |
December |
January |
February |
March |
April |
May |
Snow | SDD |
Snow | SDD |
Snow | SDD |
Snow | SDD |
Snow | SDD |
Snow | SDD |
Snow | SDD |
Snow | SDD |
Ashland MA |
| |
| |
1.1 | 1 |
13.7 | 42 |
9.2 | 18 |
| |
| |
| |
S Attleboro MA |
| |
| |
4.4 | 13.5 |
10.5 | 17.5 |
8.5 | 18.5 |
| |
| |
| |
Fairhaven MA |
| |
| |
6.2 | 15 |
10.6 | 12 |
16.6 | 36 |
| |
| |
| |
Marlboro MA |
| |
| |
1.5 | 3 |
15.25 | 39 |
7.75 | 20 |
| |
| |
| |
Middleboro MA |
| |
| |
6 | 26.5 |
12.5 | 24.5 |
10.0 | 44.5 |
| |
| |
| |
Milford MA |
| |
| |
2.6 | 2 |
25.5 | 42 |
12.4 | 20 |
16.5 | 32 |
| |
| |
Milton MA |
| |
| |
1.7 | 4 |
20.1 | 41 |
13.9 | 33 |
| |
| |
| |
Sterling MA |
| |
| |
? | 10 |
19-? | 129 |
6 | 38 |
| |
| |
| |
E Walpole MA |
| |
| |
1.25 | 1.25 |
12.56 | 32.69 |
9.96 | 33.06 |
| |
| |
| |
Poland Spring ME |
| |
0.8 | 0 |
11.5 | 24 |
18.3 | 220 |
6.7 | 75 |
| |
| |
| |
Deerfield NH |
| |
| |
6.25 | 11 |
18.75 | 193 |
| |
| |
| |
| |
Derry NH |
| |
| |
5.1 | 8 |
16.1 | 98 |
2.9 | 14 |
| |
| |
| |
Mont Vernon NH |
| |
| |
5.0 | 12 |
| |
| |
| |
| |
| |
Penacook NH |
| |
| |
5 | 8 |
21 | 220 |
2 | 167 |
15 | 79 |
| |
| |
Charlestown RI |
| |
| |
3.1 | 11 |
10.0 | 9 |
19.8 | 30 |
| |
| |
| |
Woonsocket RI |
| |
| |
2.0 | |
| |
8.2 | |
| |
| |
| |
1998/1999 season to end of last month
The persistence quotient is lower than the ultimate value if there is still
snow on the ground at the site. This data will be updated each month.
Location |
Snowfall |
Depth Days |
Persistence Quotient |
Ashland MA |
24 |
61 |
2.5 |
S Attleboro MA |
23.4 |
49.5 |
2.1 |
Fairhaven MA |
33.4 |
63 |
1.9 |
Marlboro MA |
24.5 |
62 |
2.5 |
Middleboro MA |
20.0 |
95.5 |
4.8 |
Milford MA |
57.0 |
96 |
1.7 |
Milton MA |
35.7 |
77 |
2.2 |
Sterling MA |
25 |
172 |
6.9 |
E Walpole MA |
23.77 |
67.00 |
2.8 |
Poland Spring ME |
37.3 |
319 |
8.6 |
Deerfield NH |
25 |
204 |
8.2 |
Derry NH |
24.1 |
120 |
5.0 |
Mont Vernon NH |
21.2 |
106 |
5 |
Penacook NH |
43 |
474 |
11.0 |
Charlestown RI |
32.9 |
50 |
1.5 |
Woonsocket RI |
2 |
|
|
Contributors
Name |
Location |
Randy Arnott |
Mont Vernon NH |
Dennis Bollea |
Fairhaven MA |
A Cadoret |
Woonsocket RI |
Karen Connolly |
Middleboro MA |
Matthew Carow |
E Walpole MA |
Jim Corbin |
S Attleboro MA |
Wayne Cotterly |
Poland Spring ME |
Bob Davitt |
Deerfield NH |
Paul Hansen |
Marlboro MA |
Jim Hilt |
Derry NH |
Paul Himottu |
Sterling MA |
Scott Kaplan |
Milford MA |
Jot Ross |
Ashland MA |
Chris Seeber |
Charlestown RI |
Ric Werme |
Penacook NH |
Credits
Jim Corbin, a meteorologist from Rhode Island, proposed the concept of both
snow depth days and the persistence quotient, but he didn't have good names
for them. After a bouncing around various ideas, I came up with Depth
Days. It seems to fit into colloquial speech well, e.g. "When mired
in the Depth Days of February, she thought fondly of the Dog Days of
August." Of course, none of us snow lovers would ever think that. I picked
Persistence Quotient while putting this page together, we'll see how it wears
with time.
Musings
I think depth days is a great statistic, and I'm surprised that it is catching
on slowly outside of the wxobs-sne mail list. I never expected that the NWS
would embrace it quickly, but I had hoped that TV meteorologists would start
using it, in monthly summaries, if nothing else. It would be nice if ski
areas would use it, but they may not wish to if they are not likely to be #1
consistantly. (And if only one area reports depth days, it would not be a
good comparative statistic.) I see that UVM has graphs of snow depths
at Stowe through many seasons.
Last update: 1999 Mar 13
Ric Werme
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