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HPC's Day 4-8 Alaskan 500mb Height Forecasts

Note:   These products are currently experimental and may not update regularly.
View Sea Level Pressures and Fronts Forecasts
View HPC's Day 4-8 Gridded Forecasts

The images below represent 500mb height forecasts utilizing the latest operational models and/or ensemble guidance.

HPC's Day 4-8 500mb Heights for Alaska Day 4-8 HPC Versus GFS 500mb Heights for Alaska Day 4-8 HPC 500mb Forecast & Ensemble Mean/Spread
HPC Forecast
HPC vs GFS
HPC vs Ensemble Mean
& Spread
 
To view individual forecast days and day 4-8 loops, please click on the appropriate link below.
HPC 500mb Forecasts
HPC vs GFS
HPC vs Ensemble Mean and Spread
Information regarding preferred models and forecaster confidence in the preparation of this forecast can be found in the following product:
 
HPC 500mb Graphics Description
 

The following images represent HPC's forecast.

Day 4 500mb Heights
Day 4
 Day 5 500mb Heights
Day 5
 Day 6 500mb Heights
Day 6
Day 7 500mb Heights
Day 7
 Day 8 500mb Heights
Day 8
 Day 4 to 8 500mb Heights
Days 4 to 8
Loop of HPC's forecasts from days 4-8.
 

Comparison between the 00Z or 12Z GFS (in red) and HPC's forecast.

Day 4 HPC and GFS 500mb Height Forecasts
Day 4
 Day 5 HPC and GFS 500mb Height Forecasts
Day 5
 Day 6 HPC and GFS 500mb Height Forecasts
Day 6
Day 7 HPC and GFS 500mb Height Forecasts
Day 7
 Day 8 HPC and GFS 500mb Height Forecasts
Day 8
 Day 4-8 HPC and GFS 500mb Height Forecasts
Days 4 to 8
Loop of HPC's forecast versus the 00Z or 12Z GFS from days 4-8.
 

Comparison between the 00Z or 12Z GFS Ensemble Mean (in black) and HPC's forecast. The shaded regions represent the spread (in meters) of the ensemble forecasts.

Day 4 500mb Heights - HPC Versus GFS Ensemble Mean
Day 4
 Day 5 500mb Heights - HPC Versus GFS Ensemble Mean
Day 5
 Day 6 500mb Heights - HPC Versus GFS Ensemble Mean
Day 6
Day 7 500mb Heights - HPC Versus GFS Ensemble Mean
Day 7
 Day 8 500mb Heights - HPC Versus GFS Ensemble Mean
Day 8
 Day 4 to 8 500mb Heights - HPC Versus GFS Ensemble Mean
Days 4 to 8
Loop of HPC forecast/Ensemble Mean and Spread for days 4-8.

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Page last modified: Tuesday, 22-Apr-2008 12:22:31 GMT