advertisement

Colorado Snow Forecasting 101

54 %
46 %
advertisement
Information about Colorado Snow Forecasting 101
Sports

Published on October 14, 2012

Author: findOpensnow

Source: slideshare.net

advertisement

Colorado Snow Forecasting 101 Meteorologist Joel GratzPhoto: Connor Walberg,ActionPhotoSchool.com Joel Gratz | Meadow Mountain, CO | 2009-03-11

Is Colorado the toughest state to forecast? Joel Gratz | Meadow Mountain, CO | 2009-03-11

My calling since age 5...Joel Gratz, Blue Mountain, PA, 1986. Photo: Steve Gratz Joel Gratz, Aspen Highlands, CO, 2010. Photo: Ted Mahon

La Nina storm tracks Courtesy: Mike Baker, NWS Boulder

El Nino storm tracks Courtesy: Mike Baker, NWS Boulder

La Nada storm tracks Courtesy: Mike Baker, NWS Boulder

Pleaaasssseeeee Rememberorographicsorographicsorographicsorographicsorographicsorographicsorographicsorographicsorographicsorographics

Weather Happenswhen moist air gets high1 2 3

Weather Happens when moist air gets high“Weather happens” when moist air gets high.“Weather happens” when moist air gets high.“Weather happens” when moist air gets high.“Weather happens” when moist air gets high.“Weather happens” when moist air gets high.

Where’s the moisture? Little moisture (land source)Lots of moisture (ocean source) OK moisture (ocean + plants)

Five ways to get high

Five ways to get high C is for convection.

Five ways to get high C is for convection. L is for low pressure.

Five ways to get high C is for convection. L is for low pressure. O is for orographic.

Five ways to get high C is for convection. L is for low pressure. O is for orographic. U is for undercut.

Orographics!O is for orographic.

Mountains = Precipitation Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

Mountains = Precipitation Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

Mountains = Precipitation Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

Mountains = PrecipitationPark Range Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

Mountains = PrecipitationPark Range Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

Mountains = Precipitation Park RangeFlattops Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

Mountains = Precipitation Park RangeFlattops Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

Mountains = Precipitation Park Range FlattopsGrandMesa Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

Mountains = Precipitation Park Range FlattopsGrandMesa Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

Mountains = Precipitation Park Range FlattopsGrand ElkMesa Mtns Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

Mountains = Precipitation Park Range FlattopsGrand ElkMesa Mtns Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

Mountains = Precipitation Park Range FlattopsGrand ElkMesa Mtns N&SSan Juans Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

Mountains = Precipitation Park Range FlattopsGrand ElkMesa Mtns N&SSan Juans Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

Mountains = Precipitation Park Range FlattopsGrand ElkMesa Mtns N&S EastSan Juans San Juans Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

Mountains = Precipitation Park Range FlattopsGrand ElkMesa Mtns N&S EastSan Juans San Juans Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

Mountains = Precipitation Park Range FlattopsGrand ElkMesa Mtns Sangre de Christo N&S EastSan Juans San Juans Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

Mountains = Precipitation Park Range FlattopsGrand ElkMesa Mtns Sangre de Christo N&S EastSan Juans San Juans Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

Mountains = Precipitation Park Range Indian Peaks / RMNP FlattopsGrand ElkMesa Mtns Sangre de Christo N&S EastSan Juans San Juans Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

The best (upslope) wind direction Steamboat RMNPPowderhorn Summit Co. Vail Aspen Crested Butte Telluride Silverton Wolf Creek

Forecast for liquid & convert to Snow to liquid ratiosnow1. Forecast: 0.50” liquid2. Forecast: 15 : 1 ratio3. Forecast: 7.5” of snowHow does it ski?10 : 1 = heavy snow15 : 1 = average20 : 1 = blower pow @ temps0-10F

Current WeatherTo theinternet!

Radar

Radar

Radar

Jamming the RadarBeam is blocked bythe first mountainand can’t “see” tothe secondmountain. 0.5 deg

Overshooting the snow 16,000ftIf the radar is toofar away, the beamcan overshoot thesnow

Overshooting the snow Steamboat RMNP Vail Summit Co. AspenTelluride Wolf Creek http://www.ncdc.noaa.gov/nexradinv/

Surface Observations

Surface Observations

Webcams!

SNOTEL

Colorado is a state of extremes Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

Colorado is a state of extremesMore than half of the totalannual precipitation falls inonly 20% of the days whenprecipitation occurs. Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

Schofield Pass

Schofield Pass

Schofield PassExample: Schofield Pass’10-’11

Schofield PassExample: Schofield Pass’10-’112 of 60 storms created

Colorado is a state of extremes Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

Colorado is a state of extremesThe difference between a wetyear and a dry year can comedown to the presence orabsence of just a few majorstorms. Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

Colorado is a state of extremes Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

Colorado is a state of extremesIn the arid Western states,“normal weather” is just theaverage of 30 years of extremeevents. Joe Ramey, National Weather Service Grand Juntion, Slide #8 2009-2010 Winter Outlook for Colorado

Add a comment

Related presentations

Related pages

Snow University | OpenSnow - Powder forecasts hand-crafted ...

Snow University. About OpenSnow; People of OpenSnow; Contact OpenSnow; ... Colorado Snow Forecasting 101. Forecasting tricks for Vail (March 12, 2013)
Read more

El Colorado snow forecast for 2910 m

El Colorado snow forecast for mid-mountain level in the ski resort of El Colorado, Chile.
Read more

Colorado 6 Day Snow Forecast

Detailed Snow Forecast, Snow Reports, Live Weather conditions, Webcams and Reviews for thousands of ski resorts around the World.
Read more

Colorado Resorts - SnowForecast.com - The ORIGINAL. Our ...

Our short/long range forecasts have been trusted by millions since 1998. Home; U.S ... Colorado Resorts. ... Snow conditions provided by Snocountry.com!
Read more

Colorado Snow Report | Ski Report | OnTheSnow

The most current Colorado snow report, ski conditions, open lifts & terrain for all ski resorts in Colorado, updated daily.
Read more

Severe Weather 101: Winter Weather Forecasting

Severe Weather 101 Forecasting Winter Weather. Accurately forecasting winter weather is a complicated process. It starts with a wide network of observing ...
Read more

The Colorado Daily Snow | OpenSnow - Powder forecasts hand ...

Check out our snow forecasts, ask us a question or sign up to receive snow alerts. Sign In; ... Snow & Powder Forecasts for Colorado. You Are Blocking Ads.
Read more

Breckenridge Ski Resort - SnowForecast.com - The ORIGINAL ...

Snowforecast.com - Your source for unique snow forecasts for nearly 1000 resorts worldwide!
Read more

Denver, CO (80202) Forecast | Weather Underground

Get the latest forecast for weather in Denver CO along with updates about temperature, humidity, weather radar and more on Weather Underground.
Read more