-------- Original Message --------
The NOAA National Weather Service MicroART upper air system at Chatham,
Massachusetts (WMO# 74494), will be decommissioned on or about April 17,
2009, and installation of the new Radiosonde Replacement System (RRS)
will begin. No upper air observations will be provided from this office
while RRS is being installed.
Beginning April 27, 2009, or shortly thereafter, upper air observations
will be issued using the RRS and GPS Mark IIA Sippican radiosondes.
Please update your databases.
Questions on this change should be directed to: Kevin Schrab, NWS HQ, at
Kevin.Schrab@xxxxxxxx <mailto:Jim.osullivan@xxxxxxxx>