Saturday, July 07, 2007
Whew.. it's a sweltering one out there today. As of 2 pm, my weather station is showing 29C with a 23C dewpoint giving a humidex of 39C. Very uncomfortable. (A trick to estimate humidex.. add the temperature and dewpoint in C, then subtract 13). Even more oppressive down to our south with Emerson checking in with a 42C humidex as of 2 pm (temp 32C dewpoint 23c) The hot and humid airmass will trigger a few thunderstorms this afternoon as a cold front approaches from the northwest. A few of thes storms may become severe, with large hail and damaging winds being the main threats. Isolated tornadoes are also possible given the extreme instability today. EC has issued a severe thunderstorm watch this afternoon for much of southern Manitoba including Winnipeg. Stay tuned and keep an eye to the sky if you're out and about today.
Posted by rob at 2:07 PM