Weather Bureau topics and personnel / United ... - Index of - NOAA

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The accuracy of RAWIN data varies with the type and model of
equipment used for observation, but may safely be considered at lead
a8 accurate aa single theodolite data. Teak have shown that some
models of equipment now bcing used for RAWIN observations in the
field givc data ns accurate ns double theodolite observations.
Since RAWIN reports include upper-wind data in or above cloud
decks, wind-aloft charts containing RAWIN data should not be used aS
indicators of cloud coverage.
RAWIN reports are disseminated on weathcr tclctypo circuits along
with PIBAL and RABAL reports. The code form of the information
is identical with the PIBAL code, except that an indicator is inserted
irnmediatcly after the first group, IIIGG, of the coded report. Tho in-
dicator used on CAA teletype circuits is RAWIN. For use outside the
Contincntal limits, the key group indicator (88877) is authorized,
INDEX NUMBER NOTICE
Copiea of Index Numbor Notice, dated May 1, 1944 have been mailed
to all Rcgional Offices for distribution to field stations. Stations which
have not received a copy of this notice should notify their Regional Office.
PIBALS AT CHARLOTTE, N. C.
At the request of the Army the Weather Bureau has taken over the
pibal work at Charlotte, N. C. Scheduled pibals (4 daily) were begun
at the Weather Bureau Airport Station on April 26, 1944.