000
NOUS41 KRNK 051126
PNSRNK
NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-059-
WVZ042>044-507-508-052330-

Public Information Statement
National Weather Service Blacksburg VA
726 AM EDT Tue Jun 5 2018

...Change to Climatological Period of Record for Danville and
Bluefield...

Recently, the National Center for Environmental Information (NCEI)
has extended the climatological period of record for Danville and
Bluefield climate stations, through a process known as
"threading". Over the years, Bluefield and Danville have seen 
changes in the location where climate data was recorded. Through 
this threading process, climate data recorded at these older 
locations have been connected together with the current location,
effectively extending the period of record at both sites.

These changes take effect this morning at 10 AM.

As of 10 AM this morning, the new climatological period of record
for Bluefield is from October 1891 to Present. For Danville, the 
new climatological period of record is from April 1916 to Present.

Users interested in climactic data and records for these two
climate sites may use websites such as NWS NOWData or xmAcis2, 
using the "Bluefield Area" or "Danville Area" location selection.
Selecting these two location options will use the updated period
of record described above. 

Following are URLs to NWS NOWData and xmAcis2:

NOWData: https://w2.weather.gov/climate/xmacis.php?wfo=rnk
xmAcis2: xmacis.rcc-acis.org 

If you have questions, please refer to the contact information at
the bottom of our NWS Blacksburg website: www.weather.gov/rnk.

$$

RAB/AL

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