Forecaster: Stephen Déry
Weather across Kootenay National Park will remain unsettled today due to the continued presence of a deep upper level low (519 dam) with the center situated just east of Great Slave Lake, Northwest Territories. Upper level flow remains northerly and will continue to advect cold air aloft over the Canadian Rockies over the next two days as it continues to deepen. There is no major system as the surface with only a weak (1017 hPa) low in Saskatchewan with a weak trough of low pressure extending back towards southern Alberta and BC.
Today’s weather will start off with clear, cold conditions (currently -3°C in Radium Hot Springs) and calm winds. By mid-day, sunny weather will likely lead to localized convection in the mountains with cumulus congestus developing. Deeper convection may lead to showers or flurries with the chance for graupel in more intense cells. The maximum temperature today is 2°C with warmer temperatures when the sun pokes through the clouds. Chance for precipitation will be near zero this morning but increase to 60% in the afternoon once convection initiates. At sundown, clouds and precipitation will dissipate and air temperatures will cool off rapidly.