Spring 2021 Weather Review




Spring 2021 weather review

Today’s Spring 2021 weather review shows that the season represented a significant departure from other recent years in that it was drier than average. In fact, there were fewer measurable precipitation days during the season than any other spring since 1879. Snowfall was also well below normal aside from a rare late April event. Temperatures swung wildly, with highs generally well above normal and lows slightly below normal.

1991-2020 Spring Normals
Average High: 63.1
Average Low: 42.2
Mean: 52.7
Precipitation: 11.46″
Snowfall: 4.6″

2021 March-May
Average High: 65.2 9th Warmest
Average Low: 42.0 Tied for 29th Warmest
Mean: 53.6 +0.9 20th Warmest
Precipitation: 9.59″ 62nd Driest
Snowfall: 1.2″ Ties for 12th Least Snowiest
Average Daily Snow Depth: 0.0″
Largest Snowstorm: 1.2″ on April 21st
# of 32 or Below Highs: 0 Tied for 1st Fewest
# of 32 or Below Lows: 20 Tied for 12th Fewest
# of 80 or Above Highs: 14 Tied for 12th Most
# of 70 or Above Lows: 0 Tied for 1st Fewest
# of Measurable Precipitation Days: 27 1st Fewest on Record
# of Measurable Snowfall Days: 1 Tied for 2nd Fewest

Average High By Month
March 2021: 59.0 7th Warmest
April 2021: 64.4 Tied for 29th Warmest
May 2021: 72.1 Tied for 44th Coldest

Average Low By Month
March 2021: 34.7 27th Warmest
April 2021: 42.0 Tied for 35th Warmest
May 2021: 49.2 27th Coldest

Mean By Month
March 2021: 46.9 12th Warmest
April 2021: 53.2 Tied for 28th Warmest
May 2021: 60.6 Tied for 32nd Coldest

Precipitation By Month
March 2021: 2.85″ 54th Driest
April 2021: 3.28″ 60th Wettest
May 2021: 3.46″ 61st Driest

Snowfall By Month
March 2021: 0.0″ Tied for Least Snowy
April 2021: 1.2″ 14th Least Snowy
May 2021: 0.0″ Tied for Least Snowy- Only a handful of years have had a trace or more of snow in May.

Average Snow Depth By Month
March 2021: 0.0″
April 2021: 0.0″
May 2021: 0.0″



Maximum High By Month
March 2021: 75 on the 24th
April 2021: 83 on the 27th
May 2021: 91 on the 25th

Minimum High By Month
March 2021: 40 on the 15th
April 2021: 37 o the 1st
Mays 2021: 51 on the 9th

Maximum Low By Month
March 2021: 56 on the 11th
April 2021: 65 on the 28th
May 2021: 69 on the 24th

Maximum Low Records
-The 65 on April 28th tied the record for the date with 1914.

Minimum Low By Month
March 2021: 19 on the 5th
April 2021: 21 on the 2nd
May 2021: 34 on the 1st

Highest Daily Precipitation By Month
March 2021: 1.12″ on the 18th
April 2021: 1.88″ on the 29th
May 2021: 1.43″ on the 9th

Precipitation Records
-The 1.88″ on April 29th was a record for the date, beating the old record of 1.82″ set in 1996.
-The 1.43″ on May 9th was a record for the date, beating the old record of 1.12″ set in 1909.

Highest Daily Snowfall By Month
March 2021: 0.0″
April 2021: 1.2″ on the 21st
May 2021: 0.0″

Deepest Snow Depth By Month
March 2021: 0.0″
April 2021: 1″ on the 21st
May 2021: 0.0″

For more spring records and local weather information, visit the following links.
Spring Season Records
Wilmington National Weather Service



Strange Columbus May 30, 1954 UFO




Strange Columbus: May 30, 1954 UFO

UFOs are kind of a hot topic right now. The US government has recently been releasing videos and documentation on what they acknowledge they can’t explain. The releases have begun to gain mainstream media attention, including a recent 60 Minutes report. The Pentagon is currently preparing a report to release to Congress sometime in June on these events, the contents of which could either be mundane or extraordinary. Is it a new technology from a foreign adversary? Optical illusions or natural events? Or something altogether far weirder? In the spirit of these recent news events, I thought it’d be interesting to go over some of the UFO sightings in and around Columbus over the years. This new series, Strange Columbus Things, will also highlight other types of weird local phenomenon throughout history. I hope to give a new post in this series 1-2 times per month.

The UFO events come from declassified files of the infamous Project Blue Book, which ran from the late 1940s to 1969. For the most part, the Blue Book files will just be scanned photos of the actual reports, with only occasional commentary.

This event was never explained due to a lack of information.



To view other information on global incidents, go here.
UFO Database



Worst Heat Waves in History




worst heat waves in history

What are the worst heat waves in history? The climate in Ohio is gradually getting warmer and wetter, and persistent record heat is becoming ever more common, but do recent heatwaves compare to those of the past? Let’s find out.

To find out what the worst heatwaves were, I looked at average temperatures for different consecutive time periods- 2 days, 3 days, 7 days, 10 days, 14 days and 30 days. Unsurprisingly, some historically hot summers popped up, particularly from the 1930s.

Top 10 2-Day Periods with the Warmest Average High Temperature
1. 7/21-7/22/1934: 104.5
2. 7/20-7/21/1934, 7/8-7/9/1936, 7/11-7/12/1936, 7/13-7/14/1936: 103.5
3. 7/24-7/25/1934, 7/25-7/26/1934, 7/9-7/10/1936: 103.0
4. 7/3-7/4/1911, 8/5-8/6/1918, 7/10-7/11/1936: 102.5
5. 7/9-7/10/1881, 7/12-7/13/1936: 102.0
6. 7/3-7/4/1897, 7/21-7/22/1901, 6/27-6/28/1944: 101.5
7. 7/6-7/7/2012: 101.0
8. 7/8-7/9/1881, 7/4-7/5/1911, 6/28-6/29/1934, 7/14-7/15/1936: 100.5
9. 7/7-7/8/1881, 8/6-8/7/1918, 7/20-7/21/1930, 7/26-7/27/1941, 7/7-7/8/1988, 7/8-7/9/1988, 7/15-7/16/1988: 100.0
10. 7/10-7/11/1881, 7/17-7/18/1887, 7/2-7/3/1911, 8/4-8/5/1918, 7/19-7/20/1930, 7/26-7/27/1936, 9/1-9/2/1953, 9/2-9/3/1953, 7/13-7/14/1954, 8/3-8/4/1955, 7/5-7/6/2012: 99.5

Top 10 3-Day Periods with the Warmest Average High Temperature
1. 7/20-7/22/1934, 7/9-7/11/1936, 7/12-7/14/1936: 103.3
2. 7/24-7/26/1934, 7/8-7/10/1936, 7/10-7/12/1936, 7/11-7/13/1936: 102.7
3. 7/8-7/10/1881: 101.3
4. 7/2-7/4/1911, 8/5-8/7/1918, 7/21-7/23/1934, 7/7-7/9/1936: 101.0
5. 7/3-7/5/1911, 7/13-7/15/1936: 100.7
6. 7/7-7/9/1881, 7/10-7/12/1881, 8/4-8/6/1918: 100.3
7. 7/9-7/11/1881, 7/23-7/25/1934, 7/7-7/9/1988, 7/5-7/7/2012: 100.0
8. 7/3-7/5/1897, 7/19-7/21/1934, 7/22-7/24/1934, 7/4-7/6/2012: 99.7
9. 7/6-7/8/1881, 7/19-7/21/1930, 9/1-9/3/1953: 99.3
10. 7/26-7/28/1941, 6/26-6/28/1944, 8/30-9/1/1953, 8/31-9/2/1953, 8/2-8/4/1955, 7/6-7/8/1988: 99.0

Top 10 7-Day Periods with the Warmest Average High Temperature
1. 7/8-7/14/1936: 103.1
2. 7/9-7/15/1936: 102.1
3. 7/20-7/26/1934, 7/7-7/13/1936: 101.7
4. 7/10-7/16/1936: 100.7
5. 7/19-7/25/1934, 7/11-7/17/1936: 100.3
6. 7/6-7/12/1881, 7/6-7/12/1936: 100.0
7. 7/21-7/27/1934: 99.4
8. 7/7-7/13/1881: 99.1
9. 7/5-7/11/1881: 99.0
10. 7/4-7/10/1881, 8/28-9/3/1953: 98.6

Top 10 10-Day Periods with the Warmest Average High Temperature
1. 7/8-7/17/1936: 101.0
2. 7/7-7/16/1936: 100.8
3. 7/6-7/15/1936: 100.2
4. 7/9-7/18/196: 99.8
5. 7/5-7/14/1936: 99.2
6. 7/4-7/13/1881: 98.0
7. 7/10-7/19/1936: 97.9
8. 7/3-7/12/1881: 97.8
9. 7/5-7/14/1881, 7/17-7/26/1934, 7/18-7/27/1934, 7/19-7/28/1934: 97.7
10. 7/6-7/15/1881: 97.4

Top 10 14-Day Periods with the Warmest Average High Temperature
1. 7/5-7/18/1936, 7/6-7/19/1936: 97.9
2. 7/4-7/17/1936: 97.6
3. 7/7-7/20/1936: 97.5
4. 7/3-7/16/1936: 97.1
5. 7/8-7/21/1936: 96.5
6. 7/2-7/15/1936: 96.0
7. 7/2-7/15/1881, 7/4-7/17/1881, 7/9-7/22/1936: 95.6
8. 7/13-7/26/1934: 95.5
9. 7/14-7/27/1934, 7/15-7/28/1934, 7/1-7/14/1936: 95.4
10. 7/16-7/29/1901, 7/17-7/30/1901: 95.1

Top 10 30-Day Periods with the Warmest Average High Temperature
1. 6/29-7/28/1936: 92.7
2. 6/28-7/27/1936: 92.6
3. 6/27-7/26/1934: 92.5
4. 6/26-7/25/1934, 6/30-7/29/1936: 92.3
5. 6/28-7/27/1934: 92.2
6. 7/6-8/4/1936, 7/13-8/11/1955: 92.1
7. 7/10-8/8/1955, 6/28-7/27/2012: 92.0
8. 6/25-7/24/1934, 6/27-7/26/1936, 7/1-7/30/1936, 7/2-7/31/1936, 7/5-8/3/1936, 7/7-8/5/1936, 7/14-8/12/1955, 6/27-7/26/2012: 91.9
9. 6/29-7/28/1934, 6/26-7/25/1936, 7/3-8/1/1936, 7/4-8/2/1936, 7/8-8/6/1955, 7/9-8/7/1955, 6/18-7/17/2012, 6/20-7/19/2012: 91.8
1. 6/25-7/24/1936, 7/23-8/21/1955: 91.7

The heat waves in 1934 and 1936 dominated for high temperatures, and for the most part, nothing before or since has really come close. 1881, 1901, 1918, 1955 and 2012, among others, all make appearances.

The Top 5 Highest Single-Day Temperatures Ever Recorded
1. 7/21/1934, 7/14/1936: 106
2. 7/9/1936: 105
3. 7/22/1901, 7/4/1911, 7/25/1934, 7/11/1936, 7/14/1954: 104
4. 7/10/1881, 8/5/1918, 7/22/1934, 7/12/1936: 103
5. 7/12/1881, 7/4/1897, 8/6/1918, 7/24/1934, 7/26/1934, 7/8/1936, 7/27/1936, 6/28/1944: 102



A Dispatch headline on July 13, 1936.

Now that we’ve see the worst periods for high temperature, let’s look at the worst for the mean temperature, which is the average between the high and low. Because this measurement includes the low temperatures, it could be considered the definitive look at what the absolute hottest heat waves in history really were.

Top 10 2-Day Periods with the Warmest Average Temperature
1. 7/21-7/22/1934: 92.0
2. 7/9-7/10/1881: 91.5
3. 7/9-7/10/1936: 90.5
4. 7/20-7/21/1934: 90.3
5. 7/25-7/26/1934, 7/13-7/14/1936: 90.0
6. 7/10-7/11/1881, 7/3-7/4/1911: 89.8
7. 8/5-8/6/1918, 7/20-7/21/1930: 89.3
8. 7/10-7/11/1936: 89.0
9. 7/4-7/5/1911, 7/24-7/25/1934, 7/12-7/13/1936, 7/30-7/31/1999: 88.8
10. 7/11-7/12/1881, 8/6-8/7/1918, 7/8-7/9/1936, 7/11-7/12/1936: 88.5

Top 10 3-Days Periods with the Warmest Average Temperature
1. 7/20-7/22/1934: 90.5
2. 7/8-7/10/1881: 90.3
3. 7/9-7/11/1881: 90.0
4. 7/10-7/12/1881, 7/9-7/11/1936: 89.8
5. 7/12-7/14/1936: 89.5
6. 7/21-7/23/1934: 89.3
7. 7/7-7/9/1881: 89.0
8. 8/5-8/7/1918, 7/24-7/26/1934, 7/8-7/10/1936, 7/10-7/12/1936: 88.8
9. 7/11-7/13/1936: 88.7
10. 7/3-7/5/1911, 7/13-7/15/1936: 88.5

Top 10 7-Day Periods with the Warmest Average Temperature
1. 7/8-7/14/1936, 7/9-7/15/1936: 89.1
2. 7/6-7/12/1881: 89.0
3. 7/20-7/26/1934: 88.9
4. 7/7-7/13/1881: 88.6
5. 7/5-7/11/1881, 7/10-7/16/1936: 87.9
6. 7/19-7/25/1934: 87.7
7. 7/8-7/14/1881: 87.6
8. 7/21-7/27/1934: 87.5
9. 7/7-7/13/1936: 87.4
10. 7/4-7/10/1881: 86.9

Top 10 10-Day Periods with the Warmest Average Temperature
1. 7/8-7/17/1936: 87.4
2. 7/7-7/16/1936: 87.2
3. 7/5-7/14/1881, 7/6-7/15/1881, 7/9-7/18/1936: 87.1
4. 7/4-7/13/1881: 86.9
5. 7/6-7/15/1936, 7/7-7/16/1881: 86.6
6. 7/3-7/12/1881: 86.2
7. 7/19-7/28/1934: 86.0
8. 7/18-7/27/1934, 7/10-7/19/1936: 85.7
9. 7/20-7/29/1934, 7/5-7/14/1936: 85.6
10. 7/8-7/17/1881, 7/17-7/26/1934: 85.4

Top 10 14-Day Periods with the Warmest Average Temperature
1. 7/3-7/16/1881, 7/4-7/17/1881: 85.1
2. 7/6-7/19/1936: 85.0
3. 7/5-7/18/1936: 84.9
4. 7/7-7/20/1936: 84.6
5. 7/2-7/15/1881, 7/5-7/18/1881, 7/4-7/17/1936: 84.5
6. 7/3-7/16/1936: 84.3
7. 7/6-7/19/1881, 7/8-7/21/1936, 7/18-7/31/1940: 83.9
8. 7/13-7/26/1934, 7/14-7/27/1934, 7/15-7/28/1934: 83.8
9. 7/2-7/15/1936: 83.7
10. 7/1-7/14/1881: 83.6

Top 10 30-Day Periods with the Warmest Average Temperature
1. 6/27-7/26/1934: 81.4
2. 6/28-7/27/1934: 81.3
3. 6/26-7/25/1934: 81.2
4. 6/29-7/28/1934, 7/19-8/17/1940, 7/20-8/18/1940, 6/28-7/27/2012: 81.0
5. 7/18-8/16/1940, 6/29-7/28/2012: 80.8
6. 6/25-7/24/1934, 6/27-7/26/2012: 80.7
7. 6/21-7/20/1878, 6/24-7/23/1934, 6/30-7/29/1934, 6/30-7/29/2012: 80.6
8. 6/20-7/19/1878, 6/22/1878-7/21/1878, 7/10-8/8/1916, 7/11-8/9/1916, 7/13-8/11/1916, 7/14-8/12/1916, 7/1-7/30/1934, 7/17-8/15/1940, 7/21-8/19/1940, 7/8-8/6/2011, 7/9-8/7/2011, 7/10-8/8/2011, 7/1-7/30/2012, 7/2-7/31/2012, 7/3-8/1/2012, 7/4-8/2/2012: 80.5
9. 6/19-7/18/1878, 7/12-8/10/1916, 6/28-7/27/1936, 6/29-7/28/1936, 7/3-8/1/1999, 7/3-8/1/2011, 7/5-8/3/2011, 7/6-8/4/2011, 7/7-8/5/2011, 7/11-8/9/2011, 7/5-8/3/2012: 80.4
10. 7/9-8/7/1916, 6/23-7/22/1934, 7/11-8/9/1934, 7/15-8/13/1934, 6/30-7/29/1936, 7/13-8/11/1955, 7/2-7/31/1999, 7/2-7/31/2011, 7/4-8/2/2011, 6/19-7/18/2012, 7/6-8/4/2012: 80.3

1934 and 1936 still dominate, but other years show up more often as well. Only 2012 shows up with anything in the last 60 years, though. That year also saw one of the worst wind events in Ohio history, partially fueled by the heat of that summer: North American Derecho of 2012

Finally, let’s look at periods that featured consecutive days with highs of 90 degrees or higher. What are the longest?

# of Consecutive Days with Highs 90 or Above
1. 7/3-7/16/1881: 14
2. 7/18-7/30/1940: 13
3. 6/24-7/5/1934, 7/7-7/18/1936, 6/28-7/9/1949, 7/21-8/1/1999, 6/29-7/10/2020: 12
4. 7/20-7/30/1901, 8/4-8/14/1918, 8/25-9/4/1953, 8/8-8/18/1988, 6/28-7/8/2012: 11
5. 7/27-8/5/1887, 9/7-9/16/1897, 7/29-8/7/1955, 6/13-6/22/1994: 10

A short video and article from 2016 about the 1936 heatwave, still the hottest in history.
1936 Heat Wave



Cool Link: Old Maps Search Engine




Old maps search engine

This link is a great resource to find old local maps for cities, counties and states from the US to around the world. For Columbus, maps go back to the 1920s, but other locations have even older versions. The maps are helpful for those doing research on this history of their cities.

Old Maps Online

Another favorite link is the Sanborn Fire Insurance Maps. These maps are even more detailed and you can view individual buildings down to the street level back to the 19th Century. These maps are available at the Library of Congress and require a bit more searching to find what you’re looking for.

Sanborn Maps

An 1891 Sanborn map of the Short North.



Before and After: Downtown Aerial Photos




Aerial photos have been around for more than a century, ever since someone thought to take photos from airplanes. These photos go back to at least the 1910s, when the airplane was still very much a new technology. I thought it might be interesting to do show a few of these before and after Downtown aerial photos to give an idea of how the same areas look today.

Before

before and after downtown aerial photos

Downtown around 1923.


This photo of Downtown was likely taken sometime between 1922 and 1923. The main clue is that the old Central High School is clearly under construction on the Scioto Peninsula, but seemingly in the early phases. The school would later open in the fall of 1924.
Also in the photo is the new Scioto River floodwall under construction just a decade after the Great Flood of 1913. The buildings near and along the riverfront would eventually be demolished for this project, as well as the eventual Civic Center project that would later build the Post Office and Ohio Supreme Court building. Notice as well the lack of Columbus’ signature building- LeVeque Tower. That project would be constructed over the next few years.
After
before and after downtown aerial photos

Downtown in 2019.


Downtown has obviously changed enormously in the past century. Skyscrapers now dominate Downtown, and the highway system now cuts through many neighborhoods. The riverfront itself is also significantly nicer and less industrial looking.
Before
before and after downtown aerial photos

Photo taken in 1929.


This 1929 photo looks west over Franklinton towards Downtown. The most revealing part of this photo is how compact the developed area of Columbus really was at the time. Farm fields can be seen to the south and west of Columbus.
After
before and after downtown aerial photos

Photo taken in 2019.


In the after photo, nearly all the vacant land is gone except for park space, Greenlawn Cemetery and areas along the rivers.

Before
before and after downtown aerial photos
This photo of Capitol Square in 1919 is one of the earliest aerials of Downtown I was able to find. This photo predates all highrise construction. The city was compact, dense and dominated by brick buildings.
After
before and after downtown aerial photos
In the 2019 image, skyscrapers have now replaced many of the older buildings. While the Capitol itself a handful of other buildings remain, the density has largely been lost over the years, with parking lots where many once stood.
Before
before and after downtown aerial photos
The 1919 image shows the intersection of High and Broad Streets, arguably the very center of Columbus.
After
before and after downtown aerial photos
Aside from the 8 on the Square building, virtually everything else from 1919 is long gone.

Before
before and after downtown aerial photos
This much more modern image of Downtown and the riverfront was taken in 1980.
After
before and after downtown aerial photos
The 2019 Google Earth image from the same angle shows significant changes in 40 years. New skyscrapers and other development are obvious, but the massive changes to the riverfront itself almost make this look like a different city altogether.

What might these areas look like in another century?

Thousands of additional before and after photo sequences can be found at the Historic Building Database
General information about Downtown can be found at https://www.experiencecolumbus.com/neighborhoods/downtown/