Precipitation URMA

UnRestricted Mesoscale Analysis

Last update: 16 Oct 2018 6-hourly multi-sensor precipitation estimates received from the 12 ConUS River Forecast Centers are mosaicked into a national product (the NCEP Stage IV) and remapped to the ConUS and Northwest NDFD grids.

Operational implementation: 28 Jan 2014. Availale on the NWS SBN (see WMO header info below).

On NCEP FTP: ftp.ncep.noaa.gov/pub/data/nccf/com/urma/prod/
On NCEP NOMADS: nomads.ncep.noaa.gov/pub/data/nccf/com/urma/prod/
Parallel data during NCO parallel run: para.nomads.ncep.noaa.gov/pub/data/nccf/com/urma/para/

On the ConUS grid:
File name: pcpurma_g184.yyyymmddhh.06h
WMO header: LEQA98 KWBR

On the NWRFC grid:
File name: pcpurma_g188.yyyymmddhh.06h
WMO header: LERA98 KWBR

Problem hours due to missing data

History
28 Jan 2014: operational implementation.
14 Apr 2015: upgrade

Mosaics re-made 1/3/5/7 days later
Sources of 6-hourly mosaic QPE for Stage IV/URMA: currently the 6-hourly Stage IV is a mosaic of the 6-hourly QPEs from the 12 ConUS RFCs. For this release, we first produce 6-hourly totals from the eight Eastern/Central RFCs’ hourly QPEs, then combine these 6-hourly totals with the four Western RFCs’ (NWRFC, CNRFC, CBRFC, MBRFC) 6-hourly QPEs to arrive a 6-hourly ConUS QPE.
Technical Implementation Notice
Additional info/examples of impact

Planned Dec 2015 upgrade: please see www.emc.ncep.noaa.gov/mmb/ylin/pcpanl/#Dec2015Upgrade for proposed list of changes, links to parallel run output, and new RFC domain mask

Developer's parallel run output, Apr 2014 - Mar 2015:

Ying[dot]Lin[at]noaa[dot]gov