The Ongoing Super Mega Weather Thread v3

[Mazrim]

Originally Posted by chemgear

Interesting, I hear they added a specific law to prevent water breaks for outdoor construction workers now?

Wow, so much freedom there it hurts!

[Acey]

Originally Posted by Zarley

This heat warning is idiotic - it's going to be 26 degrees today!

For the record, it's the overnight low of 14° that's triggering this heat warning for Calgary - not today's high of 27°.

Issued when 2 or more consecutive days of daytime maximum temperatures are expected to reach 29°C or warmer and nighttime minimum temperatures are expected to fall to 14°C or warmer.

You can see on this map that the trigger temperature for heat warning is higher in the Lethbridge/Medicine Hat area for example, where it's hotter on average. They're not just randomly throwing heat warnings out.

[Matata]

"You northerners and your bitch-ass dewpoints, you don't even know #### about dewpoints. If you ain't talking about dewpoints, it ain't hot!" - Jim Cornette

[Robbob]

I don't get why the overnight low of 14 triggered the warning. You would think that the warning on the lower threshold would be at least closer to 20, you know the typical low end of room temp. 14 is closer to hyperthermia then anything heat related.

[Mazrim]

Originally Posted by Robbob

I don't get why the overnight low of 14 triggered the warning. You would think that the warning on the lower threshold would be at least closer to 20, you know the typical low end of room temp. 14 is closer to hyperthermia then anything heat related.

Because a low temperature is usually only reached for 1 hour - around 6 AM - in this part of Alberta in the summer. If it's getting to 14 degrees at 6 AM, it's probably well above 20 degrees outside earlier in the night.

[Locke]

Meth-tooth sized hail here in the 'Hood.

And what really sucks is that I was about to leave to go home, but I have to go through 3 underpasses and I dont want to risk it because idiots hide under them and strand me.

[DoubleK]

Jesus

[Sainters7]

In the Beltline, man what is happening out there...simultaneously starting to smell smoke, and a clear storm rolling in. Is the storm on fire?

[Ducay]

Originally Posted by Acey

For the record, it's the overnight low of 14° that's triggering this heat warning for Calgary - not today's high of 27°.



You can see on this map that the trigger temperature for heat warning is higher in the Lethbridge/Medicine Hat area for example, where it's hotter on average. They're not just randomly throwing heat warnings out.

We're aware of the triggers - and neither are being met. Let alone the fact its an "AND" statement and not "OR". Forecast highs and low not being met, nor current temp or any other metric since yesterday (even the forecast highs/lows from yesterday)

Its clearly just an EC miss at this point. Does it matter - probably not, but this is the internet after all and we're here to complain and point out the pedantic

[Acey]

Originally Posted by Ducay

Forecast highs and low not being met, nor current temp or any other metric since yesterday (even the forecast highs/lows from yesterday)

29/14 forecast on consecutive days is the trigger and it was met based on what I'm looking here but maybe not civilian sites or public apps.

Looking at the YYC data here for yesterday I see the EC forecast is 28.5/13.5. Recorded temp at both 3 pm and 4 pm was 28.7° Lowest temp recorded at YYC for the day was 13.6°. So yesterday hit the forecast.

Today was forecast 29.0/14.2. So that's 2 consecutive days of 29/14 being forecast which correctly triggers the warning.

Today we only hit 26.4. EC missed by 3 degrees, as forecasts often do, but it doesn't matter because heat warnings are based on the forecast.

If the argument is that 29/14 is too low a trigger for the city of Calgary, I'd mostly agree with that. If the argument is that EC often misses their forecast, I'd also agree with that because it's clearly true. But the claim that the trigger was not met is incorrect. To fix this issue you have 2 options... wait until the actual temperature hits 29° to issue a warning which defeats the purpose of pre-emptively warning people, or we can increase the forecast triggers to buffer the potential of the EC forecast undershooting by 3 degrees. Neither seem particularly useful, and those at elevated risk for heat-related ailments taking minor precautions for heat at even 26° seems to be fine by me.

[Hemi-Cuda]

Went inside with my daughter for her swimming lessons at 5:30 and my car's thermometer showed 31 degrees outside. When we go back outside 45 minutes later it reads 18 degrees. I don't mind summer thundershowers, but these massive temperature swings can #### right off

[calgarygeologist]

The sky really opened up fast at my house about 15 minutes ago. It was a bit windy but relatively clear skies and then within seconds it was a torrential monsoon. No slow lead up to this dump as it was just like an off/on switch had been pushed.

[Street Pharmacist]

Go to Alberta for 10 days they said! It'll be fun they said!

[DoubleK]

This is much needed moisture. Farmers who got their first cut of hay off are doing their happy dance right now.

[Street Pharmacist]

Originally Posted by DoubleK

This is much needed moisture. Farmers who got their first cut of hay off are doing their happy dance right now.

Ok, fine and true, but I'm going on holidays. This is important

[DoubleK]

Originally Posted by Street Pharmacist

Ok, fine and true, but I'm going on holidays. This is important

Thursday is the only day to be worried about.

[Acey]

It'd be even better if the rain fell on the northern part of the province that's on fire instead of here.

[Lubicon]

Originally Posted by Acey

It'd be even better if the rain fell on the northern part of the province that's on fire instead of here.

There’s no denying the central and North areas need rain but southern Alberta needs it badly too. Soil moisture levels are very low, will take a lot of moisture to restore them.

[Erick Estrada]

Originally Posted by Street Pharmacist

Go to Alberta for 10 days they said! It'll be fun they said!

To be fair this is very typical weather for the first half of July in Calgary as it seems Stampede week coincides with evening showers. August is probably the best month if you want to be here when it's sunny.

[undercoverbrother]

I wish it was hotter.