NOUS41 KWBC 191750 AAB



Public Information Statement PNS17-03 Updated

National Weather Service Headquarters Silver Spring MD

150 PM EST Tue Dec 19 2017


TO:      Subscribers:

         -NOAA Weather Wire Service

         -Emergency Managers Weather Information Network


         Other NWS Partners and NWS Employees


FROM:    Michelle Hawkins

         Chief, Severe, Fire, Public, and Winter Weather

           Services Branch


SUBJECT: Updated: Soliciting Comments until April 30, 2018, on

         the Prototype Winter Storm Severity Index (WSSI)


Updated to add Little Rock, AR


The NWS is soliciting comments on a Winter Storm Severity Index

(WSSI) prototype until April 30, 2018. Prototype WSSI values

will be produced for 20 NWS Weather Forecast Offices (WFOs)

across the contiguous 48 states.


The purpose of the WSSI prototype is to provide NWS forecasters

and partners with an indication of the severity of winter

weather hazards and the potential for related societal impacts.

The WSSI prototype does not depict official warnings and should

always be used in context with official NWS forecasts and



The WSSI prototype is available for comment via a link from 20

select NWS Weather Forecast Offices:



Albuquerque, NM:

Amarillo, TX:

Binghamton, NY:

Burlington, VT:

Dodge City, KS:

Elko, NV:

Gaylord, MI:

Grand Junction, CO:

Grand Rapids, MI:

Jackson, MS:

Little Rock AR:

Medford, OR:

Memphis, TN:

Morristown, TN:

Nashville, TN:

Omaha, NE:

Paducah, KY:

Philadelphia, PA:

Wichita, KS:


The WSSI prototype will be updated at least four times daily at

approximately 0100 Coordinated Universal Time (UTC), 0700 UTC,

1300 UTC and 1900 UTC. No communication system changes are

required to view this web-based information.


Additional information and an example of the prototype product

are provided in the Product Description Document (PDD) at the

link below:


Comments may be submitted via the survey link below. The survey

link will also be available on the WFO web pages:


If comments and prototype evaluation are favorable, the

demonstration may be expanded as an NWS experiment for the

2018/2019 winter season. Additional opportunity for comment/review

on the experimental product will be provided

prior to any operational decision. If you have questions, please



David Soroka

NWS Severe, Fire, Public and Winter Services Branch

Silver Spring, MD



James Nelson

Branch Chief, Development and Training Branch

NWS National Center for Water and Climate Prediction

College Park, MD



NWS Public Information Statements are online at: