How Data Was Retrieved For The Manitoba Thunderstorm Season Stats
Thunderstorm days:
Thunderstorm days are defined as any day when lightning occurred. As a result, even if there was only 1 lightning strike on a given day, that day is considered a thunderstorm day. The type of precipitation that fell while lightning occurred does not matter.
I determine lightning strikes by using a variety of lightning detection services. I use Intellicast and Environment Canada for short-term lightning detection and USPLN and LightningMaps.org for data going back a day or more. If for some reason I missed a few hours of lightning data, I will sometimes look at radar archives to determine wether thunderstorms were occurring. This fact means that the data I have is not 100% accurate, but I try my best to be as accurate as I possibly can. I may sometimes check observations from Environment Canada stations, however the limitation with this is that not many stations have these types of observations. Sometimes, I will also look at any weather news on some media outlets or look at Rob's Blog and A Weather Moment blog to see if there were any thunderstorm reports (if I see a report, I always check archived radar to confirm the report). Either way, I try my best to not miss a single thunderstorm day.
Severe thunderstorm warning days:
An archive of severe thunderstorm warnings here is used to determine when warnings were issued. In addition, I use this archive here to know which community equates to which warning box. Honestly, after a while I get so used to the names of the communities and which warning boxes they belong to that I do not even need to look at the archive, saving time.
Tornado warning days:
Same method as determining severe thunderstorm warning days.
Unconfirmed/confirmed tornadoes:
Twitter photos/reports, Environment Canada reports/confirmations, media outlets and weather blogs are just some examples of sources. Reports that do not come from Environment Canada are considered ''possible'' or ''unconfirmed'' tornadoes
If you have any additional questions, please feel free to question me in the comments on A Weather Moment or Winnipeg Weather.
Thunderstorm days are defined as any day when lightning occurred. As a result, even if there was only 1 lightning strike on a given day, that day is considered a thunderstorm day. The type of precipitation that fell while lightning occurred does not matter.
I determine lightning strikes by using a variety of lightning detection services. I use Intellicast and Environment Canada for short-term lightning detection and USPLN and LightningMaps.org for data going back a day or more. If for some reason I missed a few hours of lightning data, I will sometimes look at radar archives to determine wether thunderstorms were occurring. This fact means that the data I have is not 100% accurate, but I try my best to be as accurate as I possibly can. I may sometimes check observations from Environment Canada stations, however the limitation with this is that not many stations have these types of observations. Sometimes, I will also look at any weather news on some media outlets or look at Rob's Blog and A Weather Moment blog to see if there were any thunderstorm reports (if I see a report, I always check archived radar to confirm the report). Either way, I try my best to not miss a single thunderstorm day.
Severe thunderstorm warning days:
An archive of severe thunderstorm warnings here is used to determine when warnings were issued. In addition, I use this archive here to know which community equates to which warning box. Honestly, after a while I get so used to the names of the communities and which warning boxes they belong to that I do not even need to look at the archive, saving time.
Tornado warning days:
Same method as determining severe thunderstorm warning days.
Unconfirmed/confirmed tornadoes:
Twitter photos/reports, Environment Canada reports/confirmations, media outlets and weather blogs are just some examples of sources. Reports that do not come from Environment Canada are considered ''possible'' or ''unconfirmed'' tornadoes
If you have any additional questions, please feel free to question me in the comments on A Weather Moment or Winnipeg Weather.
