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Products Guide

QPE - Gauge Only

QPE - Gauge Only

Short Description

Precipitation accumulation product using only hourly gauge accumulations that have passed the Gauge Quality Control algorithm.

Subproducts

  • 1-, 3-, 6-, 12-, 24-, 48-, and 72-hour accumulations

Primary Users

NWS: WFO, RFC

Input Sources

Hydrometeorological Automated Data System (HADS) gauge network

Resolution

Spatial resolution: 1km x 1km

Temporal resolution: 1-, 3-, 6-, 12-, and 24-hourly accumulations are updated hourly at the top of the hour. 48- and 72-hour accumulations are updated daily at 12Z. All products end at the indicated time.

Product Creation

The one-hour QPE – Gauge Only product uses only those gauges that: 1) have successfully passed the Gauge Quality Control (QC), or 2) are not quality-controlled due to their locations in poor radar coverage regions. The latter gauges are used to provide some useful information in areas lacking radar observations. QPE – Gauge Only uses a similar interpolation scheme as the QPE – Radar w/ Gauge Bias Correction product to create the gridded product. Instead of interpolating radar bias values onto a radar-only grid, this product uses the inverse distance weighting (IDW) scheme to interpolate the gauge values onto a blank 1km x 1km grid (Figure 1). The quality control and interpolation scheme are only conducted on the one-hour accumulation, since all the other accumulations are aggregates of the one-hour field.

Technical Details

References

Gauge Quality Control documentation