Top 30 Wettest MARCHES - WINNIPEG (since 1872)
Rank |
Rainfall
(mm) |
Snowfall
(cm) |
Precipitation
(mm) |
Rank |
|||
1 |
67.6 |
1945 |
76.2 |
1904 |
76.2 |
1904 |
1 |
2 |
59.9 |
1878 |
67.8 |
1909 |
73.2 |
1902 |
2 |
3 |
45.2 |
2004 C |
65.0 |
1935 |
72.1 |
1935 |
3 |
4 |
42.7 |
1902 |
64.3 |
1898 |
70.6 |
1945 |
4 |
5 |
42.0 |
2012 E |
55.1 |
1964 |
67.8 |
1909 |
5 |
6 |
40.4 |
1983 |
54.1 |
1916 |
65.6 |
1983 |
6 |
7 |
34.5 |
1942 |
50.8 |
1932 |
65.0 |
1898 |
7 |
8 |
34.3 |
1910 |
50.5 |
1944 |
62.5 |
1878 |
8 |
9 |
30.4 |
2007 E |
48.8 |
1925 |
59.7 |
2004 |
9 |
10 |
27.4 |
1905 |
46.5 |
1908 |
54.1 |
1916 |
10 |
11 |
25.9 |
1946 |
46.0 |
1936 |
52.0 |
2012 U |
11 |
12 |
25.2 |
1982 |
41.4 |
1894 |
50.8 |
1932 |
12 |
13 |
23.4 |
1892 |
40.4 |
1966 |
50.5 |
1944 |
13 |
14 |
23.4 |
2000 |
39.6 |
1956 |
50.3 |
1925 |
14 |
15 |
20.5 |
1995 |
39.1 |
1890 |
50.3 |
1964 |
15 |
16 |
19.6 |
1990 |
39.1 |
1928 |
49.3 |
1942 |
16 |
17 |
17.8 |
1896 |
38.9 |
1872 |
48.0 |
1936 |
17 |
18 |
17.3 |
1880 |
38.1 |
1979 |
47.0 |
1896 |
18 |
19 |
16.0 |
2006 C |
38.0 |
2009 |
46.5 |
1908 |
19 |
20 |
15.9 |
2016 |
37.8 |
1943 |
45.3 |
1979 |
20 |
21 |
15.0 |
1960 |
36.8 |
1971 |
45.2 |
1905 |
21 |
22 |
14.5 |
1874 |
36.8 |
1996 E |
43.7 |
1919 |
22 |
23 |
13.8 |
2009 E |
36.6 |
1920 |
43.7 |
1971 |
23 |
24 |
13.1 |
2017 |
36.4 |
2013 |
43.3 |
2007 E |
24 |
25 |
12.4 |
1961 |
34.0 |
1922 |
41.9 |
1910 |
25 |
26 |
11.7 |
1938 |
33.3 |
1897 |
41.4 |
1894 |
26 |
27 |
11.2 |
2011 E |
33.0 |
1962 |
40.9 |
1966 |
27 |
28 |
10.9 |
1919 |
32.8 |
1919 |
40.6 |
1892 |
28 |
29 |
9.7 |
1953 |
32.8 |
1923 |
40.1 |
1897 |
29 |
30 |
9.1 |
1918 |
30.7 |
1963 |
39.6 |
1956 |
30 |
1996 - 0.4 cm and 0.2 mm on Februay 28th actually fell on March 1st during the overnight. For some reason, ECCC used a 12z-12z climate day instead of 06z-06z. I moved these amounts to March 1st as a result.
2004 - Rain was incorrectly entered as snow on the 28th. Only light non-accumulating snow fell in the evening, while the rain fell early in the day. Converting the 11.6 cm of snow to 11.6 mm raises the monthly rainfall from 33.6 mm to 45.2 mm.
2006 - Rain was incorrectly entered as snow from the 29th to 31st. No snow was reported, only rain. The 0.5, 9.5 and 6.0 cm snowfall amounts were converted to rainfall amounts as a result. This raised the monthly rainfall from 0.0 mm to 16.0 mm.
General note for 2007 to 2012 - A very complicated period with absolutely no way to come up with perfect values for precipitation amounts. Values are to be taken with some grain of salt as a result. YWG AWOS frequently had nipher shield issues causing rain and wet snow amounts to be double the reality. In addition, it was prone to spurious precip amounts. Meanwhile, XWG and The Forks often suffered from missing or spurious data making a complete usage of these stations impossible. This resulted in me having to use a mish mash of stations, making corrected values highly estimated. The general rule of thumb in my corrections was to use XWG when YWG had a nipher shield issue, and The Forks when YWG had issues with snow-water equivalent.
2007 - Confidence low. Rain and snow were confused in the last week and YWG and The Forks had nipher shield issues causing unrealistically high precipitation amounts in rainfall and wet snow. XWG used for precip the 26th to 30th as a result and precip was converted from snow to rain. Also possible the issue occurred the 18th, but XWG was missing so I could not do anything. Also appears snowfall on March 1st was under-caught for some reason at the Airport (1.5 mm precip for around 7 cm of snow). The Forks 5.4 mm used as replacement. Spurious precip was also eliminated on the 8th (1.0 mm) and 20th (0.4 mm). Original values in ECCC archives were 34.2 mm of rain and 57.7 mm of precip.
2009 - Confidence low. Suspected nipher shield issues giving unrealistically high rainfall and wet snow amounts at YWG. XWG used instead for rain and precip from the 20th to 24th. On the 24th, due to mixed precipitation types I had to assign an estimated rainfall value of 5.0 mm. On the 5th, mixed precip again - I assigned an estimated rainfall amount of 1.0 mm. From the 20th to 23rd, 100% of precipitation was assigned to rainfall. Total estimated rainfall 13.8 mm. Spurious precip amounts were eliminated on the 3rd and 10th. In addition, suspected under-catch of snow after the 24th. The Forks used for precip as a result from the evening of the 24th to the 31st. Original precip value in ECCC archives was 54.0 mm. but my corrections dropped it down to 37.3 mm.
2011 - Confidence low. Nipher shield issues causing unrealistically high precip/rain amounts at YWG mid month. XWG used as replacement from the 16th to 22nd as a result. Also eliminated some spurious amounts on the 10th, 11th and 13th (each 0.5 mm). Suspect 3.0 mm on the 1st is also too high (blowing snow contamination possible) but I maintained the value for now. On the 20th, rainfall had to be estimated given mixed precip types in the evening. An estimate of 7.0 mm was created, using XWG and YWG metars as reference. The original YWG precip amount was 40.5 mm, but corrections dropped it down to 21.5 mm.
2012 - Confidence moderate. Rainfall on the 27th is estimated due to mixed precip. Estimate of 5.0 mm was created. Other days of rainfall are not problematic. As for precipitation, significant undercatch of snow on the 1st and 2nd suspected. The Forks was used for precip these two days as a result (original 1.5 mm, new 7.0 mm).
Graphs:
Rainfall: