NOUS41 KWBC 051245 AAA

PNSWSH     

 

Public Information Statement PNS-16-33, Amended

National Weather Service Headquarters Washington DC

845 AM EDT Wed Oct 5 2016

 

To:       Subscribers:

          -NOAA Weather Wire Service

          -Emergency Managers Weather Information Network

          -NOAAPORT   

          Other NWS Partners and Employees

 

FROM:     Tim Oram

          Acting Chief, Marine, Tropical and Tsunami

          Services Branch

 

SUBJECT:  Amended: Soliciting comments on the Experimental

          Modernized Open Lakes Forecast for the Great Lakes

          through December 31, 2016

 

Amended to extend the comment period through December 31, 2016,

for the Experimental Modernized Open Lake Forecast (GLF) for

Lake Huron and to include Lake St. Clair and Lake Michigan

 

The Open Lake Forecast (GLF) is a text product issued by

five primary Great Lakes Weather Forecast Offices (WFO) to

state expected weather conditions within their marine

forecast area of responsibility through Day 5. The primary

offices responsible for issuing the GLF are:

 

WFO Marquette for Lake Superior

WFO Detroit for Lake Huron and Lake St. Clair

WFO Chicago for Lake Michigan

WFO Cleveland for Lake Erie

WFO Buffalo for Lake Ontario

 

These offices routinely issue a GLF four times per day. 

 

During comment and review, the experimental Open Lake Forecast

will be produced in parallel with the current operational Open

Lake Forecast by the following offices:

 

WFO Detroit for Lakes Huron and St. Clair

WFO Chicago for Lake Michigan

 

Other WFOs may add a similar parallel experimental Open Lake

Forecast at a later date as resources allow.

 

The product format for the Experimental Modernized Open Lake

Forecast will be as follows:

 

OPEN LAKE FORECAST FOR LAKE HURON

NATIONAL WEATHER SERVICE CITY STATE

TIME-DATE (example: 900 AM EDT FRI MMM DD YYYY)

 

.SYNOPSIS...

SSZXXX-XXX>XXX-DDHHMM- (UGC/FIPS CODING)

GEOGRAPHICAL DESCRIPTORS

TIME-DATE (example: 900 AM EDT FRI MMM DD YYYY)

 

...HEADLINE...

 

.TODAY...

WEATHER.....

SFC WINDS....KNOTS

100-FT WINDS....KNOTS

SIG WAVES........FEET/METERS

OCNL WAVES (HIGHEST 10 PERCENT WHENEVER WAVE HEIGHTS OF SIX FEET

OR HIGHER ARE FORECAST)...FEET/METERS

 

.TONIGHT...

 

.TOMORROW...

 

.TOMORROW NIGHT...

 

.FORECAST DAYS 3 THROUGH 5...

WEATHER...SURFACE WIND...SIGNIFICANT WAVES

 

(double dollar sign)

 

This forecast is arranged in a tabular (or bullet like) manner

and provides weather, wind, and wave information in an easy to

read format.  The mandatory elements are surface and 100-foot

wind speed/direction, significant waves, maximum (occasional)

waves and significant weather. 

 

The Day 3-5 forecast will be in narrative format and will only

include weather, significant wave height, and surface wind speed

and direction. Before the end of the evaluation period,

additional elements may be added to the format to test the

capacity for expansion within the GLF. These elements could

include Probability of Gale Force wind, return frequency of

maximum (occasional) waves, or wave period. 

 

This experimental product format will be available online via

the following links:

 

http://www.weather.gov/dtx/glftable

http://www.weather.gov/lot/glftable

http://www.weather.gov/dtx/glftablesc

 

For details on this product enhancement, please see the

following Product Description Document (PDD):

 

http://products.weather.gov/PDD/PDDGLFDTXModernized2016.pdf

 

Please provide comments by December 31, 2016, on the proposal to

provide the Modernized Open Great Lakes Forecast at all Great

Lakes offices using the following link:

 

http://www.nws.noaa.gov/survey/nws-survey.php?code=MODGTLAKESFCST

 

During this comment period, a proactive effort will be made

to educate users and partners of the product availability

and use.  At the end of the comment period, the modernized GLF

will be evaluated for use at the other primary Great Lakes WFOs

and a decision will be made to choose between one of the

following options: transition to operational at all Great Lakes

Forecast Offices, extend the comment period, or to discontinue

the enhancement.

 

For questions on this product, contact:

 

Brian Hirsch

Transportation Sector Services Program Manager

Kansas City, MO 64153-2371

816-268-3149

Brian.Hirsch@noaa.gov

 

National Public Information Statements are online at:

 

http://www.weather.gov/os/notif.htm

 

NNNN