STATISTICS from CTO Weather Centre - April, 2024
MONTHLY SUMMARY: MEANS AND TOTALS:
Reading
Mean
Normal
RecHi
YY
RecLo
YY
High Temp
2021
2018
Low Temp
2023
2003
Mean Temp
2021
2018
Dew Point
2023
2017
Relative Humidity
61
%
54
%
62
%
2018
22
%
2017
Barometric Pressure
2013
2020
Winds
2023
2002
- from
SW
W
WNW
N
Total Reading
Total
Normal
RecMost
YY
RecLeast
YY
Rain
2018
2012
Snow
2016
2016
- Water Equivalent
2016
2012
Precipitation
2018
2012
Sunshine
92
h
95
h
375
h
2016
0
h
2002
MONTHLY SUMMARY: SINGLE-DAY EXTREMES AND RECORDS:
Reading
Highest
DD
Lowest
DD
RecHi
YY-DD
RecLo
YY-DD
High Temp
03
04
2002-17
2016-03
Low Temp
11
04
2002-17
2004-05
Humidex
03
2023-13
Wind Chill
n/a
2018-05
Dew Point
03
01
2024-03
2019-29
Relative Humidity
100
%
05
13
%
09
100
%
2024-05
1
%
2017-06
Barometric Pressure
17
12
2023-30
2020-17
Winds
04
2012-12
- from
ENE
E
Daily Total
Most
DD
RecMost
YY-DD
Rain
12
2023-06
Snow
04
2016-06
- Water Equivalent
04
2016-06
Precipitation
12
2013-13
Sunshine
13:10
h
07
18:05
h
2022-28
Daily Mean
Highest
DD
Lowest
DD
RecHi
YY-DD
RecLo
YY-DD
Temperature
10
04
2002-17
2016-03
Dew Point
12
01
2024-12
2013-11
Relative Humidity
86
%
04
31
%
10
91
%
2018-17
1
%
2017-06
Barometric Pressure
17
12
2023-30
2012-19
Winds
03
07
2024-03
2002-01
- from
NNW
ENE
NNW
N
EVENTS THIS MONTH (15):
Nunavut Created - April 1 @ 01:00
Today marks 25 years since Nunavut separated from the Northwest Territories, in 1999.
Last Quarter - April 1 @ 23:14
A waning half-Moon is near the meridian (halfway across the sky) as the Sun rises.
Falklands War Begins - April 2 @ 01:00
On this day in 1982, the Falklands War began, pitting Great Britain against Argentina for control of the Islands. Argentina surrendered 74 days later.
Total Solar Eclipse - April 8 @ 01:42
A Total eclipse of the sun will be visible in Canada, the United States and Mexico. The centreline tracks through the centre west Mexican coast, into Texas, to Lake Ontario, and roughly parallelling the Saint Lawrence Seway, curving out through the maritimes.
Battle of Vimy Ridge - April 9 @ 01:00
On this day in 1917, during World War I, the Battle of Vimy Ridge began, with four Canadian divisions storming the lines versus three German divisions. The Canadians were ultimately victorious, and a beautiful memorial now decorates the site.
Trans-Canada Air Lines Formed - April 10 @ 01:00
On this day, back in 1937 (now 87 years ago), Trans-Canada Air Lines was formed. It eventually went on to be renamed "Air Canada" in 1965, and to swallow Canadian Airlines International (formerly Canada Pacific Airlines, or CP Air), which itself had absorbed WardAir a few years before (1989) in 2001.
Yuri Gagarin in Orbit - April 12 @ 01:00
On this day in 1961, Soviet Cosmonaut Yuri Gagarin became the first human to orbit the earth, aboard Vostok 1. Following the flight, he was made a Hero of the Soviet Union. From that point on a national treasure, he was forbidden further space flights. He later died, in 1968, in a plane crash. Since the year 2000, an annual event, Yuri's Night, celebrates milestones in space exploration. This date was declared the International Day of Human Space Flight by the UN.
First Space Shuttle Launch - April 12 @ 01:00
On this day in 1981, Space Shuttle Columbia was launched from Cape Canaveral, Florida, on an orbital flight commanded by John Young, a Project Apollo veteran, and Bob Crippen. Columbia went on to make many more flights before breaking up during re-entry in 2003.
First Quarter - April 15 @ 15:13
A waxing half-Moon is near the meridian (halfway across the sky) as the Sun sets.
1906 San Francisco Earthquake - April 18 @ 01:00
Northern California experienced a massive (magnitude 7.9) earthquake, on this day in 1906, which ruptured gas lines, causing widespread fires.
Second Battle of Ypres - April 22 @ 01:00
In this World War I battle, begun on this day in 1915, Canadians were in the forefront. Over the course of the battle, which lasted until May 25, Canadians were subject to violent bombardment and poison-gas attacks, but held the line and eventually emerged victorious.
Earth Day - April 22 @ 01:00
The first Earth Day was celebrated back in 1970.
Full Moon - April 23 @ 19:48
The Moon is most-opposite the Sun in the sky, rising as the sun sets.
HST Launched - April 24 @ 01:00
On this day 34 years ago (1990), the Hubble Space Telescope was launched. The first large space telescope, the Hubble initially had severe focusing problems; but a later servicing mission repaired Hubble's focus with a special package of corrective lenses. The Hubble went on to make over 30 years of discoveries as the premiere optical space telescope, before being supplanted by the James Webb Space Telescope, but remains in service, with investigations into extending its lifespan by up to 20 years.
Chernobyl Disaster - April 26 @ 01:00
On this day in 1986, the No. 4 reactor of the Chernobyle Nuclear Power Plant exploded, releasing radiation in into the environment. A years-long effort to stabilize the reactor followed, and today it is enclosed in a giant metal 'sarcophagus'. It has repeatedly come into danger during the Russo-Ukraine war.
Daily Temperatures This Month:
Daily Precipitation This Month:
This Month:
Day
High
Low
Mean
MxHx
MnWC
AvRH
AvDP
AvBP
Prec
Sunrise
Sunset
Sun
Moon
Winds
1
48%
06:43
19:31
06:45 h
Waning Gibbous
SW @
2
58%
06:41
19:33
10:05 h
Last Quarter
S @
3
66%
06:39
19:34
00:10 h
Waning Crescent
NNW @
4
86%
06:37
19:35
00:55 h
Waning Crescent
NNW @
5
85%
06:35
19:36
00:55 h
Waning Crescent
WNW @
6
54%
06:33
19:38
07:05 h
Waning Crescent
W @
7
46%
06:32
19:39
13:10 h
Waning Crescent
ENE @
8
36%
06:30
19:40
06:35 h
Waning Crescent
N @
9
35%
06:28
19:42
09:55 h
New
S @
10
31%
06:26
19:43
10:05 h
Waxing Crescent
WSW @
11
61%
06:24
19:44
01:00 h
Waxing Crescent
NNW @
12
82%
06:22
19:45
00:15 h
Waxing Crescent
N @
13
85%
06:21
19:47
00:20 h
Waxing Crescent
NW @
14
78%
06:19
19:48
02:45 h
Waxing Crescent
NW @
15
64%
06:17
19:49
08:35 h
Waxing Crescent
SSE @
16
63%
06:15
19:51
08:25 h
First Quarter
S @
17
57%
06:14
19:52
05:55 h
Waxing Gibbous
SW @
18
70%
06:12
19:53
00:00 h
Waxing Gibbous
NNW @
19
87%
06:10
19:54
00:05 h
Waxing Gibbous
W @
20
n/a%
06:08
19:56
n/a h
Waxing Gibbous
n/a @
21
n/a%
06:07
19:57
n/a h
Waxing Gibbous
n/a @
22
n/a%
06:05
19:58
n/a h
Waxing Gibbous
n/a @
23
n/a%
06:03
20:00
n/a h
Full
n/a @
24
n/a%
06:02
20:01
n/a h
Waning Gibbous
n/a @
25
n/a%
06:00
20:02
n/a h
Waning Gibbous
n/a @
26
n/a%
05:59
20:03
n/a h
Waning Gibbous
n/a @
27
n/a%
05:57
20:05
n/a h
Waning Gibbous
n/a @
28
n/a%
05:55
20:06
n/a h
Waning Gibbous
n/a @
29
n/a%
05:54
20:07
n/a h
Waning Gibbous
n/a @
30
n/a%
05:52
20:09
n/a h
Waning Gibbous
n/a @
April
61%
92 h
SW @
Normals
54%
-7.7°C
1016.3 mb
95 h
W @ 2 km/h
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