Hello. A number of changes are planned for the NCEP Stage II/IV analysis, to be implemented with the RTMA/URMA v2.8 in March 2020. High light of changes:
- Stage II will be discontinued with the RTMA/URMA v2.8 implementation (scheduled for Mar 2020)
- Stage IV will be in GRIB2 format, instead of GRIB1
- Subject to NCEP/NCO approval, Stage IV mosaicking will be done at hh:55 instead of hh:33 (per request by OWP, RFCs for RIDGE II, so that more RFC QPEs can be included for the current hour)
- There will be an additional re-run for 24h ConUS mosaic done at 30h after valid time (at the 18:55Z cycle), to supplement the current 1/2/3/5/7-day rerun schedule, done at 12:55Z, to give RFCs a better chance to have their re-sent or updated QPEs included in AHPS’s water.weather.gov/precip w/o waiting for the 2-day rerun the next day
Parallel data available at:
https://para.nomads.ncep.noaa.gov/pub/data/nccf/com/pcpanl/para/A 2-page summary of changes, with detailed list of file name changes and link to add'l info about the RTMA/URMA v2.8 upgrade, can be found at
Thanks,
Ying Lin
NCEP/EMC/VPPPG
