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NATIONAL TECHNICAL INFORMATION MESSAGE 94-37
NATIONAL WEATHER SERVICE HEADQUARTERS
1100 AM EDT TUE AUG 30 1994
TO: ALL NWS OFFICES, DOMESTIC DATA SERVICE SUBSCRIBERS,
FAA USERS AND THE FAA WEATHER MESSAGE SWITCHING
CENTER
FROM: RICH PRZYWARTY
ACTING CHIEF, SERVICES DEVELOPMENT BRANCH
SUBJECT: SUMMARY OF IMPLEMENTATIONS REGARDING MOS PRODUCTS,
WHICH WILL BECOME EFFECTIVE ON SEPTEMBER 1, 1994
(THE FOLLOWING INFORMATION WAS PROVIDED BY J. PAUL DALLAVALLE AND
JOHN JENSENIUS OF THE TECHNIQUES DEVELOPMENT LABORATORY, AND
CHRISTINE ALEX OF THE OFFICE OF METEOROLOGY.)
Effective at 0000 UTC on Thursday, September 1, 1994, several
changes to MRF-based products, will be implemented. These
changes are summarized below:
1) Three new Medium-Range Forecast model (MRF)-based MOS
guidance collectives will be implemented. The new collectives
will be for the future NWS Warning Forecast Offices in
Greenville, South Carolina; Marquette, Michigan; and Paducah,
Kentucky. The identifiers are:
AFOS hdr (WMO header)
cccFMRGSP (FOXE61 KWBC) - Containing forecasts for:
GSP - Greenville, SC
CLT - Charlotte, NC
cccFMRMQT (FOXC74 KWBC) - Containing forecasts for:
MQT - Marquette, MI
cccFMRPAH (FOXC75 KWBC) - Containing forecasts for:
PAH - Paducah, KY
The guidance for Marquette and Paducah is new (i.e. neither the
collectives nor the forecasts for these cities have previously
been available). The guidance for Greenville, SC, and Charlotte,
NC, is simply being moved from an existing collective (AFOS
header FMRCAE; WMO header added FOXE45 KWBC) to the new
collective FMRGSP (FOXE61 KWBC).
Refer to National Technical Information Message 94-21, dated
July 18, 1994, for more information on this item.
Also, refer to Technical Procedures Bulletin 411 ("The MRF-Based
Statistical Guidance Message") and the associated yellow
reference card. The Appendix (list of stations) to TPB 411 and
the yellow card will be updated in the next month or so to
reflect all of the changes to the MRF-based MOS guidance.
2) Several additional cities are being added to existing MRF MOS
collectives. Only maximum and minimum temperature guidance will
be available for the cities being added to existing collectives.
Refer to NTIM 94-21, issued July 18, 1994, for the complete list
of stations being added to existing bulletins.
3) A minor change in the format of the MRF MOS message will be
implemented. In the heading line that begins with the station
call letters, the month will be replaced by the day of the week.
For example:
ALB DEC 08| DEC 09| DEC 10| DEC 11| DEC 12| DEC 13| ...
will be replaced by
ALB SUN 08| MON 09| TUE 10| WED 11| THU 12| FRI 13| ...
4) The WMO header for the Alaskan MRF MOS guidance message will
change from FOUS20 KWBC to FOAK20 KWBC. This change will not
affect AFOS users (the Alaskan MRF MOS guidance is not available
on the AFOS network).
5) A new message containing MRF-based statistical daytime
maximum and nighttime minimum temperature forecasts for 12
Canadian cities will be implemented. The AFOS header will be
FMRCND; the WMO header will be FECN21 KWBC. Forecasts for the
following stations will be contained in the message:
WLF - Lansdowne House, OT
YEG - Edmonton, AB
YPA - Prince Albert, SK
YQB - Quebec, QE
YQD - The Pas, MB
YQR - Regina, SK
YQT - Thunder Bay, OT
YVR - Vancouver, BC
YWG - Winnipeg, MB
YXS - Prince George, BC
YYB - North Bay, OT
YYC - Calgary, AB
Refer to NTIM 94-22, dated July 18, 1994, or NTIM 94-26, dated
July 20, 1994, for more information on this item.
If you have any questions concerning any of these changes, see
the referenced National Technical Information Messages (AFOS
header WSHPNSNMC; WMO header NOUS41 KWBC), or call
Paul Dallavalle or John Jensenius at 301-763-8151 or Chris Alex
at 301-713-0462.
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