Missing variables from table on HRRR site

[btickell]

Perhaps a question with an obvious answer, I am trying to download the HRRR MUCAPE (most unstable CAPE) data as is listed on their daily forecasting grid here.

If I construct my Herbie client as such:

from herbie import Herbie

H = Herbie("2024-08-08", fxx=0)

and search for CAPE related variables

H.inventory(':*CAPE*:')

I don't seem to see MUCAPE anywhere. The output is just:

     grib_message  start_byte     end_byte                range reference_time valid_time variable                  level forecast_time                      search_this
104           105    63331474   64274835.0    63331474-64274835     2024-08-08 2024-08-08     CAPE                surface           anl                :CAPE:surface:anl
147           148   115886947  116784002.0  115886947-116784002     2024-08-08 2024-08-08     CAPE  180-0 mb above ground           anl  :CAPE:180-0 mb above ground:anl
151           152   123632948  124393862.0  123632948-124393862     2024-08-08 2024-08-08     CAPE   90-0 mb above ground           anl   :CAPE:90-0 mb above ground:anl
153           154   125271437  126253437.0  125271437-126253437     2024-08-08 2024-08-08     CAPE  255-0 mb above ground           anl  :CAPE:255-0 mb above ground:anl
157           158   130856654  131928405.0  130856654-131928405     2024-08-08 2024-08-08     CAPE  0-3000 m above ground           anl  :CAPE:0-3000 m above ground:anl

Is this a misunderstanding of what variables are accessible via scraping / Herbie?

[williamhobbs]

Not sure if this is helpful, but I don't see MUCAPE in the HRRR inventories here https://www.nco.ncep.noaa.gov/pmb/products/hrrr/, e.g., https://www.nco.ncep.noaa.gov/pmb/products/hrrr/hrrr.t00z.wrfprsf02.grib2.shtml. I do see the five CAPE variables you got from Herbie in your example.

[btickell]

Hmm yeah that was my take away as well. I plotted the 255-0mb above ground variable and it looks close to the plot of MUCAPE as shown in the web table. Odd...

[williamhobbs]

I know it's been a while on this one, but I just had the thought to check the NOAA discussion forum, and it looks like this has been answered by NOAA staff: NOAA-GSL/GSL-Regional-Model-Forum#33.