We would greatly appreciate feedback on its use; in the classroom, for presentations or for research. Mail to psddata at (esrl.psd.data@noaa.gov).
Background Information
Related Dataset Plotting and Analysis Pages
03/24/2017: The monthly long terms means used 1979-2008 and not 1981-2010. Please re-download any LTM files. See the problems page.

3-Hourly NCEP North American Regional Reanalysis (NARR) Composites

Plot composites (averages) of the hourly mean. NARR dataset. NARR data is available from Jan 1979 to Jun 30, 2017 for 0z,3z,6z,9z,12z,15z,18z,21z Note that accumulated precipitation is accumlated from the time to 3 hours later. The precipitation rate is the forecast for 3 hours later. In general for precipitation, you should use accumulated precipitation.

The NARR dataset is very high resolution. Please have patience while plots are being created.

? Which variable? Level? Variable/Level list
? Enter dates for composites :

year    mm dd hh    year mm dd hh      year mm dd hh       year mm dd hh
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OR File with Dates Optional Plot Label replaces list of dates.
Plot Label:
? Lag: Plot composites for hours before or after dates chosen
? Color? Shading:
? Plot type? Mean
? Scale plot size (%)   Plot contour labels? No Yes
? Reverse colorbar? No Yes
? Override default contour interval? Interval: Range: low high
? Interpolation? 1x1 0.3x0.3 degrees
? Map Region

? IF Custom projection:
Lowest lat: (-90 to 90) Highest lat:
Western-most longitude (0 to 360): Eastern-most longitude:
CUSTOM projection:
mailto (Report Bugs)
This is a Research and Development Application