Baltimore/Washington Airport snow depth

[uncle W]

I used BWI because it had a good string of snow depth records...1960-61 had two streaks in the top ten consecutive days with 1" or more and the most days with 52...2009-10 has the most 10" days and consecutive 10" days...Also the deepest snow depth...34"...
.................days..........consecutive...
season.....1"...6"...10"....1"...6"...10"...max depth

1947-48....21...01...00....10...01...00.....6"
1948-49....08...01...00....03...01...00.....6"
1949-50....00...00...00....00...00...00.....trace
1950-51....06...00...00....02...00...00.....2"
1951-52....06...01...00....03...01...00.....6"
1952-53....07...00...00....02...00...00.....3"
1953-54....18...02...00....09...02...00.....6"
1954-55....12...00...00....04...00...00.....2"
1955-56....21...01...00....14...01...00.....6"
1956-57....15...01...00....08...01...00.....6"
1957-58....35...11...05....10...07...05...16"
1958-59....05...00...00....02...00...00.....1"
1959-60....23...08...01....12...04...01...10"

1960-61....52...20...03....30...05...01...13"
1961-62....20...02...01....09...02...01...10"
1962-63....32...00...00....20...00...00.....5"
1963-64....35...08...00....11...02...00.....9"
1964-65....22...00...00....13...00...00.....5"
1965-66....23...11...06....18...10...06...17"
1966-67....28...10...03....08...05...02...10"
1967-68....22...02...00....05...02...00.....8"
1968-69....09...00...00....03...00...00.....3"
1969-70....24...01...00....10...01...00.....6"

1970-71....10...01...00....06...01...00.....6"
1971-72....11...00...00....08...00...00.....4"
1972-73....02...00...00....02...00...00.....1"
1973-74....13...02...00....06...01...00.....6"
1974-75....11...00...00....04...00...00.....4"
1975-76....07...02...00....03...02...00.....8"
1976-77....21...00...00....16...00...00.....3"
1977-78....31...03...00....12...03...00.....9"
1978-79....25...11...05....19...06...05...22"
1979-80....14...00...00....06...00...00.....5"

1980-81....03...00...00....02...00...00.....2"
1981-82....29...10...00....19...07...00.....8"
1982-83....19...07...06....11...06...06...23"
1983-84....20...00...00....10...00...00.....5"
1984-85....13...00...00....06...00...00.....3"
1985-86....14...00...00....07...00...00.....5"
1986-87....21...12...10....14...11...05...17"
1987-88....18...02...00....10...02...00.....7"
1988-89....09...00...00....03...00...00.....3"
1989-90....28...00...00....22...00...00.....5"

1990-91....07...00...00....03...00...00.....4"
1991-92....04...00...00....02...00...00.....2"
1992-93....15...04...01....07...04...01...11"
1993-94....24...00...00....07...00...00.....4"
1994-95....08...01...00....08...01...00.....7"
1995-96....28...15...11....12...12...11...25"
1996-97....12...01...00....07...01...00.....6"
1997-98....03...00...00....01...00...00.....1"
1998-99....17...00...00....06...00...00.....5"
1999-00....23...05...04....22...05...04...15"

2000-01....10...00...00....04...00...00.....4"
2001-02....03...00...00....03...00...00.....2"
2002-03....42...10...05....19...06...05...18"
2003-04....22...03...00....13...03...00.....6"
2004-05....17...00...00....08...00...00.....5"
2005-06....10...01...01....05...01...01...13"
2006-07....13...00...00....07...00...00.....4"
2007-08....08...00...00....04...00...00.....4"
2008-09....10...00...00....05...00...00.....5"
2009-10....38...26...18....25...17...13...34"
2010-11....17...01...00....11...01...00.....7"
2011-12....01...00...00....01...00...00.....1"

2012-13....06...00...00....03...00...00.....3"

2013-14....37...02...01....10...01...01...11"

Most/least days 1"
52 1960-61 ... 00 1949-50
42 2002-03 ... 01 2011-12
38 2009-10 ... 02 1972-73

37 2013-14 ... 03 1980-81
35 1957-58 ... 03 1997-98
35 1963-64 ... 03 2001-02
32 1962-63 ... 04 1991-92
31 1977-78 ... 05 1958-59
29 1981-82 ... 06 1950-51
28 1966-67 ... 06 1951-52
28 1989-90 ... 06 2012-13
28 1995-96 ...
..........................................
days 6"
26 2009-10
20 1960-61
15 1995-96
12 1986-87
11 1957-58
11 1965-66
11 1978-79
10 1966-67
10 1981-82
10 2002-03
days 10"
17 2009-10
11 1995-96
10 1986-87
06 1965-66
06 1982-83
05 1957-58
05 1978-79
05 2002-03
04 1999-00
Consecutive days 1"
30 1960-61
25 2009-10
22 1989-90
22 1999-00
21 1960-61* two separate streaks..
20 1962-63
19 1978-79
19 1981-82
19 2002-03
18 1965-66
Consecutive days 6"
17 2009-10
12 1995-96
11 1986-87
10 1965-66
07 1957-58
07 1981-82
06 1978-79
06 1982-83
06 2002-03
Consecutive days 10"
13 2009-10
11 1995-96
06 1965-66
06 1982-83
05 1957-58
05 1978-79
05 1986-87
05 2002-03
04 1999-00
Maximum depth...
34" 2009-10
25" 1995-96
23" 1982-83
22" 1978-79
18" 2002-03
17" 1965-66
17" 1986-87
16" 1957-58
15" 1999-00
13" 1960-61
13" 2005-06
11" 1992-93

11" 2013-14
10" 1959-60
10" 1961-62
10" 1966-67

[mitchnick]

thanks uncle!

[RIC Airport]

I've decided to add RIC's information to this thread. The system only goes back to the mid 1940s, but we do have snow cover data as far back as 1921. Anyway, looks like 2009-10 had among the highest number of snow cover days within a single season since the 1940s and the most since the 1960s. There is missing data from 1995-2001 so those numbers are not correct as I know we can add a good 5-7 additional days to 1995-96.

Threshold Exceedance Summary

Station: RICHMOND INTL AP 
State: VA 
ID: 447201 
Latitude:  37.51 degrees 
Longitude: -77.32 degrees 
Elevation: 164 feet 
Station period of record: 05/01/1946-11/14/2010

Thresholds
Creation time: 11/15/2010 12:011 EST
Element: Snow Depth
Units: inch
Analysis: Num. of days>=1.0
Season: 11/1 - 5/1
Period of analysis: 1945 - 2011
Column delimiter: tab 

Rank Value Year Num. Missing
1   0 1948-1949 0
2   1 1949-1950 0
3   0 1950-1951 0
4   1 1951-1952 0
5   2 1952-1953 0
6   6 1953-1954 0
7   8 1954-1955 0
8   0 1955-1956 0
9   5 1956-1957 0
10 10 1957-1958 0
11 10 1958-1959 0
12 20 1959-1960 0
13 15 1960-1961 0
14 18 1961-1962 0
15 11 1962-1963 0
16 11 1963-1964 0
17 12 1964-1965 0
18 22 1965-1966 0
19 20 1966-1967 0
20   7 1967-1968 0
21   8 1968-1969 0
22   9 1969-1970 0
23   7 1970-1971 0
24   5 1971-1972 0
25   6 1972-1973 0
26 11 1973-1974 0
27   4 1974-1975 0
28   1 1975-1976 0
29 13 1976-1977 0
30 10 1977-1978 0
31 16 1978-1979 0
32 18 1979-1980 0
33   0 1980-1981 0
34 19 1981-1982 0
35 13 1982-1983 0
36   1 1983-1984 0
37   6 1984-1985 0
38   8 1985-1986 0
39 17 1986-1987 0
40 12 1987-1988 0
41   6 1988-1989 0
42 14 1989-1990 0
43   1 1990-1991 0
44   0 1991-1992 0
45   5 1992-1993 0
46 11 1993-1994 0
47   4 1994-1995 0
48   1 1996-1997 0
49 10 2004-2005 6
50   5 2005-2006 0
51   1 2006-2007 0
52   1 2007-2008 1
53   5 2008-2009 0
54 21 2009-2010 0

Average     8.3

And here are the number of consecutive days for RIC. Notice that 2009-10 makes the list.

Top most consecutive number of days with snow cover 1" or greater at RIC (since 1921)

1. 19 days (January 24-February 12, 1948)

2. 17 days (January 13-29, 1982) and (February 7-22, 1979)

3. 16 days (January 26-February 10, 1966)

4. 15 days (January 30-February 13, 2010), (March 4-17, 1960) and (January 23-February 6, 1940)

5. 14 days (December 8-21, 1989)

6. 13 days (January 6-18, 1996)

7. 12 days (January 22-February 2, 1987) and (December 22, 1935-January 2, 1936)

8. 10 days (January 25-February 3, 2004) and (January 25-February 3, 2000)

When you include trace amounts, the longest streaks are as follows....

1. 21 Days (December 8-28th, 1989, January 4-26, 1977, and January 23-February 13, 1948.

2. 20 Days (January 27-February 15, 1961 )

[Sparky]

03/04 is probably the most underrated winter in the past decade in the Baltimore area. But 22 days of 1" or more is decent and followed right after the big 02/03 winter with 42 days. The Jan 04 cold persistence is memorable.

Nice stats UncleW

[uncle W]

updated as of 2/8/11...So far BWI has 11 days with an inch either falling or on the ground...Nine straight 1/26-2/3...No days with 6" or 10" so far...5" is the biggest storm...

[Bob Chill]

updated as of 2/8/11...So far BWI has 11 days with an inch either falling or on the ground...Nine straight 1/26-2/3...No days with 6" or 10" so far...5" is the biggest storm...

The interesting part of the 5" storm is that it had nearly an inch of liquid. Snow has been waaay stubborn to melt off in my neighborhood. We officially got 8" and the snow turned into a glacier soon after it fell. Most nights you could walk on top of it without leaving footprints.

IMO- If the storm has normal 10-1 ratios it would have melted off days ago.

[das]

updated as of 2/8/11...So far BWI has 11 days with an inch either falling or on the ground...Nine straight 1/26-2/3...No days with 6" or 10" so far...5" is the biggest storm...

That number for BWI seems shockingly low to me. Not doubting it, I'm just wondering if there is somethign wrong with the measurement location (like it is on a slight SW facing slope or something). Without looking back at specifics, I have well over 30 days of >1" snowcover here in Clarksburg, including 3.8" on the ground now leftover from the storm 14 days ago.

[Fozz]

That number for BWI seems shockingly low to me. Not doubting it, I'm just wondering if there is somethign wrong with the measurement location (like it is on a slight SW facing slope or something). Without looking back at specifics, I have well over 30 days of >1" snowcover here in Clarksburg, including 3.8" on the ground now leftover from the storm 14 days ago.

It makes a big difference what side of the fall line you're on.

[Fozz]

IMO- If the storm has normal 10-1 ratios it would have melted off days ago.

I don't know......if ratios were 10:1 with the same amount of precip then the storm would have been close to a HECS.

[Bob Chill]

I don't know......if ratios were 10:1 with the same amount of precip then the storm would have been close to a HECS.

Probably right. Why the heck can't we get a damn HECS this year!?! We had a few shots but they ending of being a HEC kick in the NADS.

[Chris L]

I don't know......if ratios were 10:1 with the same amount of precip then the storm would have been close to a HECS.

No doubt about it, Fozz...

Even up here, the sfc temps were a tad warm, then overnight, 12 inches of snow in 4 hours or so.... Plus, NYC got 19 inches of snow even with the poor ratios in the beginning.

IF it had been a 12:1 ratio, no doubt, HECS for BWI, you got 14.5" from this right? You would have been at 25 inches of snow if the sfc temps was colder. Hell, It would be like February 5-6th 2010 in terms of snowfall for you had been 12 to 1 ratio for sure.

[uncle W]

updated adding last years debacle...

I used BWI because it had a good string of snow depth records...1960-61 had two streaks in the top ten consecutive days with 1" or more and the most days with 52...2009-10 has the most 10" days and consecutive 10" days...Also the deepest snow depth...34"...

.................days..........consecutive...

season.....1"...6"...10"....1"...6"...10"...max depth

1947-48....21...01...00....10...01...00.....6"

1948-49....08...01...00....03...01...00.....6"

1949-50....00...00...00....00...00...00.....trace

1950-51....06...00...00....02...00...00.....2"

1951-52....06...01...00....03...01...00.....6"

1952-53....07...00...00....02...00...00.....3"

1953-54....18...02...00....09...02...00.....6"

1954-55....12...00...00....04...00...00.....2"

1955-56....21...01...00....14...01...00.....6"

1956-57....15...01...00....08...01...00.....6"

1957-58....35...11...05....10...07...05...16"

1958-59....05...00...00....02...00...00.....1"

1959-60....23...08...01....12...04...01...10"

1960-61....52...20...03....30...05...01...13"

1961-62....20...02...01....09...02...01...10"

1962-63....32...00...00....20...00...00.....5"

1963-64....35...08...00....11...02...00.....9"

1964-65....22...00...00....13...00...00.....5"

1965-66....23...11...06....18...10...06...17"

1966-67....28...10...03....08...05...02...10"

1967-68....22...02...00....05...02...00.....8"

1968-69....09...00...00....03...00...00.....3"

1969-70....24...01...00....10...01...00.....6"

1970-71....10...01...00....06...01...00.....6"

1971-72....11...00...00....08...00...00.....4"

1972-73....02...00...00....02...00...00.....1"

1973-74....13...02...00....06...01...00.....6"

1974-75....11...00...00....04...00...00.....4"

1975-76....07...02...00....03...02...00.....8"

1976-77....21...00...00....16...00...00.....3"

1977-78....31...03...00....12...03...00.....9"

1978-79....25...11...05....19...06...05...22"

1979-80....14...00...00....06...00...00.....5"

1980-81....03...00...00....02...00...00.....2"

1981-82....29...10...00....19...07...00.....8"

1982-83....19...07...06....11...06...06...23"

1983-84....20...00...00....10...00...00.....5"

1984-85....13...00...00....06...00...00.....3"

1985-86....14...00...00....07...00...00.....5"

1986-87....21...12...10....14...11...05...17"

1987-88....18...02...00....10...02...00.....7"

1988-89....09...00...00....03...00...00.....3"

1989-90....28...00...00....22...00...00.....5"

1990-91....07...00...00....03...00...00.....4"

1991-92....04...00...00....02...00...00.....2"

1992-93....15...04...01....07...04...01...11"

1993-94....24...00...00....07...00...00.....4"

1994-95....08...01...00....08...01...00.....7"

1995-96....28...15...11....12...12...11...25"

1996-97....12...01...00....07...01...00.....6"

1997-98....03...00...00....01...00...00.....1"

1998-99....17...00...00....06...00...00.....5"

1999-00....23...05...04....22...05...04...15"

2000-01....10...00...00....04...00...00.....4"

2001-02....03...00...00....03...00...00.....2"

2002-03....42...10...05....19...06...05...18"

2003-04....22...03...00....13...03...00.....6"

2004-05....17...00...00....08...00...00.....5"

2005-06....10...01...01....05...01...01...13"

2006-07....13...00...00....07...00...00.....4"

2007-08....08...00...00....04...00...00.....4"

2008-09....10...00...00....05...00...00.....5"

2009-10....38...26...18....25...17...13...34"

2010-11....17...01...00....11...01...00.....7"

2011-12....01...00...00....01...00...00.....1"

Most/least days 1"

52 1960-61 ... 00 1949-50

42 2002-03 ... 01 2011-12

38 2009-10 ... 02 1972-73

35 1957-58 ... 03 1980-81

35 1963-64 ... 03 1997-98

32 1962-63 ... 03 2001-02

31 1977-78 ... 04 1991-92

29 1981-82 ... 05 1958-59

28 1966-67 ... 06 1950-51

28 1989-90 ... 06 1951-52

28 1995-96 ... 07 1952-53

......................07 1975-76

days 6"

26 2009-10

20 1960-61

15 1995-96

12 1986-87

11 1957-58

11 1965-66

11 1978-79

10 1966-67

10 1981-82

10 2002-03

days 10"

17 2009-10

11 1995-96

10 1986-87

06 1965-66

06 1982-83

05 1957-58

05 1978-79

05 2002-03

04 1999-00

Consecutive days 1"

30 1960-61

25 2009-10

22 1989-90

22 1999-00

21 1960-61* two separate streaks..

20 1962-63

19 1978-79

19 1981-82

19 2002-03

18 1965-66

Consecutive days 6"

17 2009-10

12 1995-96

11 1986-87

10 1965-66

07 1957-58

07 1981-82

06 1978-79

06 1982-83

06 2002-03

Consecutive days 10"

13 2009-10

11 1995-96

06 1965-66

06 1982-83

05 1957-58

05 1978-79

05 1986-87

05 2002-03

04 1999-00

Maximum depth...

34" 2009-10

25" 1995-96

23" 1982-83

22" 1978-79

18" 2002-03

17" 1965-66

17" 1986-87

16" 1957-58

15" 1999-00

13" 1960-61

13" 2005-06

11" 1992-93

10" 1959-60

10" 1961-62

10" 1966-67

Good luck in 2013!...