NOUS41 KWBC 191550



Service Change Notice 12-12

National Weather Service Headquarters Washington DC

1150 AM EDT Mon Mar 19 2012


To:       Subscribers:

          -Family of Services

          -NOAA Weather Wire Service

          -Emergency Managers Weather Information Network


          Other NWS Partners and NWS Employees


From:     Thomas Graziano

          Chief, Hydrologic Services Division


          Eli Jacks

          Chief, Fire and Public Weather Services Branch


Subject:  Changes to the Regional Temperature and Precipitation

          (RTP) product and re-establishment of the Daily

          Hydrometeorological Data Summary (HYD) product at the

          Baltimore/Washington Weather Forecast Office WFO


Effective June 5, 2012, at 1200 Coordinated Universal Time (UTC), the Baltimore/Washington (LWX) Weather Forecast Office (WFO) will change the issuance times and content RTP product. The RTP will contain data from automated stations such as the Automated Surface Observing System and the Automated Weather Observing System and will be issued twice daily around 0030 UTC and 1230 UTC.


Other observational data, including 24-hour data from cooperative observation (COOP) stations currently being sent in the RTP product, will be transmitted in the Daily HYD product. The HYD will be issued once per day around 10:00 AM local standard time.


Products affected:



----------    --------  -----------------    -----------------
ASUS61 KLWX   RTPLWX       1400 UTC           0030 and 1230 UTC
SXUS51 KLWX   HYDLWX       not issued         10:00 AM LST


Samples of the new product formats are available at:


For questions or comments about this change, please contact:


James E. Lee                      Jason Elliott
Meteorologist-in-Charge           Senior Service Hydrologist
Baltimore/Washington WFO          Baltimore/Washington WFO
43858 Weather Service Rd.
         43858 Weather Service Rd.
Sterling VA 20166                 Sterling VA 20166
703-996-2222                      703-996-2234    


National Service Change Notices are online at: