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   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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