The Program Currently Requires a Manual Download of the Latest GFS run by me. e-mail
and I'll download the latest file. Soon (hopefully) it
will auto-download the latest file(s). Stay tuned ... Click
for detailed instructions.
The program takes ~2.1 minutes to run. Only about 65 seconds are for the analysis.
The rest of the time is for generating 100+ image files!
Make maps or gimme match dates only?
(1=make maps, 2=don't)
Variable to forecast
(1=SLP, 2=Air Temp, 3=500mb Heights)
Lat/Lon bounds for GFS analog matches:
for a blank global map with labelled grid lines.
Assign weights for matching:
500 mb Height
This is where you set the variable criteria for selecting the analogs.
Select which variabls receive a partial (or no) share of the weighting.
Note: Total should add to 100.
Enter the lat / lon (50-90N / 0-360E) for a GENERALIZED point forecsat (resolution 2.5°).
Days for search radius:
Note: This is plus or minus target date. E.g., Search radius
of 7 days means seven days before and after target (7+1+7=15 days).
Days to sequence for match:
Do you want a 1-day match, a 2-day match, or a 3-day match?
A 1-day match might be transient so you have a choice of up to 3 days.
Percent analogs above/below
. A separate map will be made that shows the percent of the top analogs that are
above or below normal.
Enter number of analogs here:
(Optional) *** To run a historical date
as a substitude for the current date
, select the month/day/year here.
*** If the values are anything but 1/1/1948, the historical date will be analyzed.
This is where you can enter a date of significance to compare the current forecast against.
It usually represents a date where something significant happened. Lat/Lon bounds from above are used.
Once it starts, DO NOT HIT REFRESH.
The program takes 3.0 minutes to run,
Wait for completion message and URL link below.