Weather UpdateLatah County LEPCWeather UpdateLatah County LEPC

Weather and Water UpdateWeather and Water Update• La Niña Advisory in Effect (upgraded in September

from La Niña Watch)

• Winter Outlook still calls for better chances of Below Normal Temps and better chances for Above Normal Precip (snow)– Officially, winter begins on December 22!!

• La Niña Advisory in Effect (upgraded in September from La Niña Watch)

• Winter Outlook still calls for better chances of Below Normal Temps and better chances for Above Normal Precip (snow)– Officially, winter begins on December 22!!

NOAA’s CFS ENSO ForecastNOAA’s CFS ENSO Forecast

La Nina Snowfall (% of Average)La Nina Snowfall (% of Average)

La Nina Average SnowfallLa Nina Average Snowfall

Snowfall for Last WinterSnowfall for Last Winter

• From the previous image – 69.4” is average for a La Niña winter

• 2010-2011 Winter – Moscow recorded 69.0” of snowfall

• November tallied 18.6” in 2010 and only 8.4” in 2011

• From the previous image – 69.4” is average for a La Niña winter

• 2010-2011 Winter – Moscow recorded 69.0” of snowfall

• November tallied 18.6” in 2010 and only 8.4” in 2011

Snowfall Since 1949Moscow

Snowfall Since 1949Moscow

Avg 49.7

Moscow Snow for Nov and DecMoscow Snow for Nov and DecYear November December Winter Total

2008 T 46.2” 97.2”

2007 7.0” 23.6” 85.7”

1999 1.2” 16.4” 56.7”

1995 3.6” 3.2” 73.6”

1988 12.0” 17.5” 93.8”

1984 4.8” 29.9” 80.2”

1983 0.7” 4.8” 27.1”

Temp Outlook Dec-Jan-Feb

Precip Outlook

Dec-Jan-Feb

RecapRecap

• Dec-Jan-Feb (DJF) Forecast – Near Normal Temperatures– Favors Chances of Above Normal Precipitation

• Typical La Niña Winters mean increasedsnowfall on average of 123%

• Thinking Ahead– Travel/Roadway/Plowing considerations– Flood potential in Spring– Delayed fire season…AGAIN?

• Dec-Jan-Feb (DJF) Forecast – Near Normal Temperatures– Favors Chances of Above Normal Precipitation

• Typical La Niña Winters mean increasedsnowfall on average of 123%

• Thinking Ahead– Travel/Roadway/Plowing considerations– Flood potential in Spring– Delayed fire season…AGAIN?

Questions/DiscussionQuestions/Discussion