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NOUS41 KWBC 301518

Public Information Notice
National Weather Service Headquarters Washington DC
Relayed for NESDIS
1120 AM EDT Mon Mar 30 2015

To:         Subscribers:
            -Family of Services
            -NOAA Weather Wire Service
            -Emergency Managers Weather Information Network
            Other NWS Partners and NWS Employees

From:       Kevin Schrab
            Chief, Observing Services Division

Subject:    Soliciting Comments until April 27, 2015, on a
            NESDIS Proposal to Retire the SPENES Bulletin

The National Environmental Satellite, Data, and Distribution
Service (NESDIS) is accepting comments through April 27, 2015, on
a proposal to retire the Satellite Precipitation Guidance Message
Product (TXUS20 KNES / SPENES).

NESDIS is considering discontinuing the SPENES product and
significantly reducing the frequency of precipitation
coordination through 12Planet and NWSChat. If this change occurs,
then NESDIS Satellite Analysis Branch (SAB) analysts will brief
satellite-based information to National Centers for Environmental
Prediction (NCEP) Weather Prediction Center (WPC) forecasters,
who in turn are expected to incorporate this information into the
Mesoscale Precipitation Discussions (MPD - AWUS01 KWNH / FFGMPD)

SPENES would be partially replaced by the WPC MPD, which provides
a single source of centralized guidance on flash flood threats to
assure consistent message delivery. As part of the National
Precipitation Prediction Unit, SAB has provided satellite support
for the last 30 years to the NCEP WPC for Quantitative
Precipitation Forecasts and for the more recent MPDs. SAB would
continue satellite support to WPC. Satellite-based information
from SAB will be integrated by WPC`s forecasters into MPDs.

If SPENES is retired:

- Centralized heavy precipitation guidance to WFO Honolulu, HI,
and WFO San Juan, PR, would be limited to products from WPC.

- Stand-alone satellite-based guidance for weather systems
approaching the West Coast of the CONUS would no longer be
provided. Other observational and model-based information from
WPC and other sources would remain available.

- Stand-alone satellite based guidance addressing winter storm
development or satellite-derived snow rates would no longer be
available. The SPC Mesoscale Convective Discussion (MCD) would
address such events from an integrated observational and model-
based approach.

- SAB would no longer provide directly to the WFOs (except as
possible NWSChats) guidance about the early satellite signals of
developing marginal heavy precipitation threats which have the
potential of evolving into a more serious threat.  SAB would
provide this information to WPC MPD forecasters instead.

- SAB would no longer routinely provide stand-alone satellite-
based guidance for heavy rainfall events that are more of a long-
duration threat (i.e., more of a flood threat than a flash flood
threat). Partners and users are encouraged to reference WPC
rainfall forecasts and other existing NWS products.

Please submit questions or comments by April 27, 2015, to:

 John Simko
 Satellite Precipitation Program Team Lead
 NOAA/NESDIS Satellite Analysis Branch

Once all comments are received and evaluated, NESDIS will make a
decision whether or not to retire the SPENDES product.  A
decision to retire the product would be announced in a future
Service Change Notice.

National Public Information Notices are online at:

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