| 9 December 2002: |
***Specific links to RFC verification for CNRFC and NWRFC from 1999 into
2000, as well as the Western Region Follow-on Assessment, are no longer
active (these links are interspersed earlier on in this log, and can be
identified by labels such as "CNRFC" or "NWRFC", or by a specific link
location). However, the conference presentations are still active.***
|
| 12 January 2001: |
December 2000: gridded QPF verification statistics of Day 2 and
Day 3 06-hour forecasts for CBRFC and CNRFC domains are now available
(will backbuild). |
| 11 January 2001: |
December 2000: gridded QPF verification statistics for all RFC
domains except NWRFC are now available.
In addition to Day 1
statistics, statistics for the individual 6-hr periods in Day1 are
generated
CAUTION is again recommended for RFC domains where
frozen precipitation is dominant; specifically MBRFC, NCRFC, & MARFC.
Comparison of the observed precipitation interval distribution to the
forecast interval distribution yields this conclusion. |
| 20 December 2000: |
QPF Verification statistics for the CBRFC and CNRFC domains (November
2000; gridded) are now available. |
| 13 December 2000: |
Comparison Plots interface has been developed to visualize the data
being used in verification statistics. |
| 11 December 2000: |
RFC QPF Verification statistics for November 2000 are now available via
the NPVU
QPF Verification
interface.
WARNING QPF Verification Statistics for November 2000
may be inaccurate due to problems with the gridded precipitation
analyses in frozen precipitation situations. This is particularly
evident in those RFC domains in the northern part of the country. |
| 02 November 2000: |
RFC QPF Verification statistics for October 2000 are now available via
the NPVU
QPF Verification
interface. |
| 30 October 2000: |
NPVU
RFC Data interface is nearly fully functional with the
following data available:
RFC & Mosaic QPF, QPE, and FFG gif images;
RFC HYD bulletins; and
RFC QPS products.
HYD bulletins are now available. These are bulletins sent by the
River Forecast Centers to NCEP each day for the previous 12Z to 12Z
period. At a minimum, the bulletins contain quality-controlled 24-hr
observed point precipitation amounts. The CNRFC is the only RFC that
does not currently send in QC'd data. This may change shortly. Some
bulletins also contain 6-hr precipitation amounts. A few RFCs break
their bulletins up into several bulletins: NCRFC, NWRFC (event
dependent), & SERFC. |
| 20 October 2000: |
QPS (Quantitative Precipitation Summary) bulletins are now
available. Most of the values are for MAP (Mean Areal Precipitation
- sub-basin) areas; however, point data are provided in the bulletins
from the three Western Region RFCs. |
| 16 October 2000: |
Access to the Mosaic Images now available via the
NPVU RFC Data page |
| 12 October 2000: |
Prototype NPVU RFC
Data page launched. Link is added to NPVU Home
page. |
| 10 October 2000: |
RFC QPF Verification statistics for September 2000 are now available via
the NPVU QPF
Verification page.
***MARFC statistics are suspect due to 18Z QPFs being confused as 12Z
QPFs - Correction was made on 22 September 2000.*** |
| 04 October 2000: |
NPVU QPF
Verification page launched. Link is added to
NPVU Home page.
QPF Verification statistics by River Forecast Center domain are now
available. Monthly statistics are computed for Day 1 (f000-f024) 06h
QPFs issued for the 12Z cycle.
August 2000: statistics are now available.
***MARFC statistics are suspect due to 18Z QPFs being confused with
12Z QPFs - Correction was made on 22 September 2000.*** |
| 06 April 2000: |
Now available: March 2000 and November 2000 through March 2000
CNRFC &
NWRFC
gridded & point verification statistics based on observed, forecast,
and observed and forecast amounts.
Western Region Follow-on Assessment Case Studies verification
statistics are now produced for selected periods of flooding in the
CNRFC
& the
NWRFC. |
| 16 March 2000: |
Now available: February 2000 and November 1999 through February 2000
CNRFC &
NWRFC gridded
& point verification statistics based on observed, forecast, and observed
and forecast amounts. Previous month's statistics will be recomputed
over the coming days.
Gif images of the gridded observations and forecasts are also availablei
to view by month for
CNRFC.
A new
Conferences, Presentations, Etc. page has been created (accessible
from the main NPVU page) to provide any available information that is
presentated in group settings. |
| 08 February 2000: |
Now available: January 2000 and November 1999 through January 2000
CNRFC &
NWRFC gridded
& point verification statistics based on observed amounts.
Gif images of the point observations and forecasts are also available to
view by month for
CNRFC &
NWRFC. |
| 31 January 2000: |
Now available: November 1999 through December 1999
CNRFC &
NWRFC gridded
& point verification statistics based on observed amounts. |
| 24 January 2000: |
Now available: December 1999 CNRFC gridded verification statistics based
on observed amounts (
http://www.hpc.ncep.noaa.gov/npvu/wrfa/cnrfc/199912/) |
| 21 January 2000: |
Now available: December 1999 CNRFC point verification statistics based
on observed amounts (
http://www.hpc.ncep.noaa.gov/npvu/wrfa/cnrfc/199912/) |
| 18 January 2000: |
Now available: December 1999 NWRFC verification statistics based on
observed amounts (
http://www.hpc.ncep.noaa.gov/npvu/wrfa/nwrfc/199912/) |
| 22 December 1999 |
Now available: Gridded CNRFC verification statistics based on observed
amounts (
http://www.hpc.ncep.noaa.gov/npvu/wrfa/cnrfc/)
Provided a
LEGEND for the error statistics. |
| 15 December 1999 |
Release to the world the NPVU Web site @
http://www.hpc.ncep.noaa.gov/npvu/.
The outline of the Western Region Follow-on Assessment (
html, pdf)
is posted to explain the approved assessment process.
Mean Absolute Error (MAE) graphics of the first month of the
Western Region
Follow-on Assessment are now available. These statistics have only
been computed at the forecast points on 06-hour intervals based upon the
observed amounts.
Error statistics based upon both forecast AND observed amount (the double
both method) as well as gridded verification statistics will be
available shortly. |
| 24 November 1999 |
Creation of the NPVU Web site and
home page.
Link to HPC pseudo real-time QPF verification statistics and graphics.
Link taken away on 10 December 1999 due to privacy considerations. It
will be established again when improvements are made. |
www.nws.noaa.gov 
