Frontier Weather, Inc.

City Specific Historical and Forecast Monthly Data

Map Symbol Key

U.S./Canada	U.S./Canada Cities with forecast days in horizontal data format Click for Site List	U.S./Canada	U.S./Canada Cities with forecast days in vertical data format Click for Site List
U.S./Global	U.S. + Global Cities with forecast days in horizontal data format Click for Site List	U.S./Global	U.S. + Global Cities with forecast days in vertical data format Click for Site List

Forecast Model Temperature Data

Raw 2 meter or 850 mb temperature output, use with caution

Model	00Z Run	06Z Run	12Z Run	18Z Run
Operational GFS	U.S./Canada U.S./Canada U.S./Global U.S./Global	U.S./Canada U.S./Canada U.S./Global U.S./Global	U.S./Canada U.S./Canada U.S./Global U.S./Global	U.S./Canada U.S./Canada U.S./Global U.S./Global
Operational GFS Anomalies Only*	U.S./Canada U.S./Canada	U.S./Canada U.S./Canada	U.S./Canada U.S./Canada	U.S./Canada U.S./Canada
GFS Ensemble Mean	U.S./Canada U.S./Canada U.S./Global U.S./Global	U.S./Canada U.S./Canada U.S./Global U.S./Global	U.S./Canada U.S./Canada U.S./Global U.S./Global	U.S./Canada U.S./Canada U.S./Global U.S./Global
GFS Ensemble Mean Anomalies Only*	U.S./Canada	U.S./Canada	U.S./Canada	U.S./Canada
ECMWF 2m Temp Anomalies	U.S./Canada U.S./Canada		U.S./Canada U.S./Canada
ECMWF 850mb Temp Anomalies	U.S./Canada U.S./Canada U.S./Global U.S./Global		U.S./Canada U.S./Canada U.S./Global U.S./Global
ECMWF Ens Mean 2m Temp Anoms	U.S./Canada U.S./Canada		U.S./Canada U.S./Canada
ECMWF 2m Temp Anoms for All Members	U.S./Canada		U.S./Canada
ECMWF Ens Mean 850mb Temp Anoms	U.S./Canada U.S./Canada U.S./Global U.S./Global		U.S./Canada U.S./Canada U.S./Global U.S./Global
Canadian CMC Ensemble Mean	U.S./Canada U.S./Canada U.S./Global U.S./Global		U.S./Canada U.S./Canada U.S./Global U.S./Global
CMC Ensemble Mean Anomalies Only*	U.S./Canada		U.S./Canada
Operational CMC Temp Anomalies	U.S./Canada U.S./Canada		U.S./Canada U.S./Canada
NAV GEM Temp Anomalies	U.S./Canada U.S./Canada U.S./Global		U.S./Canada U.S./Canada U.S./Global
CFS Climate Model Monthly Forecasts vs 1999-2010 Averages	CFS model data files are updated each day after the 18Z set of runs. Data files are not for individual model runs, but are an average of the last 40 runs in order to match up with what appears on the NOAA CPC page. One global file contains forecasts for specific site locations, the other contains forecasts on a lat/lon grid.			U.S./Canada U.S./Global U.S./Global
CFS Climate Model Monthly Forecasts vs 1981-2010 Averages	CFS model data files are updated each day after the 18Z set of runs. Data files are not for individual model runs, but are an average of the last 40 runs in order to match up with what appears on the NOAA CPC page. One global file contains forecasts for specific site locations, the other contains forecasts on a lat/lon grid.			U.S./Canada U.S./Global U.S./Global

Forecast Model Precipitation Data

Raw output, use with caution near mountains

Model	00Z Run	06Z Run	12Z Run	18Z Run
GFS Precipitation Totals	U.S./Canada U.S./Canada U.S./Global U.S./Global	U.S./Canada U.S./Canada U.S./Global U.S./Global	U.S./Canada U.S./Canada U.S./Global U.S./Global	U.S./Canada U.S./Canada U.S./Global U.S./Global
ECMWF Precipitation Totals	U.S./Canada U.S./Canada		U.S./Canada U.S./Canada
ECMWF Ensemble Precipitation Totals	U.S./Canada U.S./Canada		U.S./Canada U.S./Canada
ECMWF Precipitation Totals for All Members	U.S./Canada		U.S./Canada
CMC Precipitation Totals	U.S./Canada U.S./Canada U.S./Global U.S./Global		U.S./Canada U.S./Canada U.S./Global U.S./Global
NAV GEM Precipitation Totals	U.S./Canada U.S./Canada U.S./Global U.S./Global		U.S./Canada U.S./Canada U.S./Global U.S./Global
NAM Precipitation Totals (Daily)	U.S./Canada U.S./Canada	U.S./Canada U.S./Canada	U.S./Canada U.S./Canada	U.S./Canada U.S./Canada
NAM Precipitation Totals (Hourly)	U.S./Canada U.S./Canada	U.S./Canada U.S./Canada	U.S./Canada U.S./Canada	U.S./Canada U.S./Canada
HIRES NAM Precip Totals (Daily)	U.S./Canada U.S./Canada	U.S./Canada U.S./Canada	U.S./Canada U.S./Canada	U.S./Canada U.S./Canada
HIRES NAM Precip Totals (Hourly)	U.S./Canada U.S./Canada	U.S./Canada U.S./Canada	U.S./Canada U.S./Canada	U.S./Canada U.S./Canada
CFS Climate Model Monthly Forecasts vs 1999-2010 Averages	CFS model data files are updated each day after the 18Z set of runs. Data files are not for individual model runs, but are an average of the last 40 runs in order to match up with what appears on the NOAA CPC page. One global file contains forecasts for specific site locations, the other contains forecasts on a lat/lon grid.			U.S./Canada U.S./Global U.S./Global

Forecast Model Snowfall Data

Raw output, use with caution along coasts and near mountains

Model	00Z Run	06Z Run	12Z Run	18Z Run
GFS Snowfall Totals	U.S./Canada U.S./Canada U.S./Global U.S./Global	U.S./Canada U.S./Canada U.S./Global U.S./Global	U.S./Canada U.S./Canada U.S./Global U.S./Global	U.S./Canada U.S./Canada U.S./Global U.S./Global
ECMWF Snowfall Estimates	U.S./Canada U.S./Canada		U.S./Canada U.S./Canada
ECMWF Ensemble Snowfall Estimates	U.S./Canada U.S./Canada		U.S./Canada U.S./Canada
ECMWF Snowfall Estimates for All Members	U.S./Canada		U.S./Canada
NAM Snowfall Totals	U.S./Canada U.S./Canada	U.S./Canada U.S./Canada	U.S./Canada U.S./Canada	U.S./Canada U.S./Canada
HIRES NAM Snowfall Totals	U.S./Canada U.S./Canada	U.S./Canada U.S./Canada	U.S./Canada U.S./Canada	U.S./Canada U.S./Canada
CMC Snowfall Totals	U.S./Canada U.S./Canada U.S./Global U.S./Global		U.S./Canada U.S./Canada U.S./Global U.S./Global

Forecast Cloud Cover Data

Raw output, use with caution

Model	00Z Run	06Z Run	12Z Run	18Z Run
GFS ENS Daily Averages	U.S./Canada U.S./Canada U.S./Global U.S./Global	U.S./Canada U.S./Canada U.S./Global U.S./Global	U.S./Canada U.S./Canada U.S./Global U.S./Global	U.S./Canada U.S./Canada U.S./Global U.S./Global

*Anomaly Only data files are an average of the temperature anomaly at each 6 hour forecast interval, other data files contain the anomaly as calculated from the model forecast Max/Min. The values in the Anomaly Only files tend to be more accurate since they are calculated using the 1981-2010 model climatology at each 6 hour interval, and is less influenced by model max/min biases.