Transcript Flood Outlook - Latah County, Idaho

Weather Update
Latah County LEPC
Weather 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!!
NOAA’s CFS ENSO Forecast
La Nina Snowfall (% of Average)
La Nina Average Snowfall
Snowfall 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
Snowfall Since 1949
Moscow
Avg 49.7
Moscow Snow for Nov and Dec
Year
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
Recap
• Dec-Jan-Feb (DJF) Forecast
– Near Normal Temperatures
– Favors Chances of Above Normal Precipitation
• Typical La Niña Winters mean increased
snowfall on average of 123%
• Thinking Ahead
– Travel/Roadway/Plowing considerations
– Flood potential in Spring
– Delayed fire season…AGAIN?
Questions/Discussion