NOUS41 KWBC 121419



Public Information Statement

National Weather Service Headquarters Washington DC

10:19 PM EDT Fri Jul 12 2013


TO:        Subscribers:

           -Family of Services

           -NOAA Weather Wire Service

           -Emergency Managers Weather Information Network


           Other NWS partners and NWS employees


FROM:      Cindy Woods

           Chief, Operations and Requirements Division

           Chief, Performance and Awareness Division


SUBJECT:   Use of Mixed Case Letters in the NWS Storm Prediction

           Center Public Severe Weather Outlook Product Effective

           on or about July 31, 2013


Effective on or about Wednesday, July 31, 2013, the NWS will

expand its mixed case text Product Risk Reduction effort to

include the NWS Storm Prediction Center (SPC) Public Severe

Weather Outlook product (WOUS40 KWNS/PWOSPC).


This expansion in the number of available mixed case text

products continues the risk-reduction effort begun in August

2010. At that time, NWS began issuing national PNS products using

mixed case letters and the expanded punctuation/character set

(Table 1):


and AFD, RWS and PNS products at select WFOs in October 2011:


NWS first began seeking comments regarding mixed case text

products in May 2010:


NWS partners and users of this SPC text product are encouraged to

consider NWS intent and comment regarding this next step in the

risk reduction effort. User feedback will help the NWS better

plan the eventual transition of other NWS text products to mixed

case and the expanded character set.


Please provide comments by June 30, 2014, at:


Use of mixed case letters in text products will make them easier

to read and allow users to click on internet links directly

rather than converting them to lowercase or mixed case. 

Additional punctuation and other characters that are part of the

international reference Alphabet No. 5 will also be included as



Table 1:  Allowed Mixed Case Character Set

"space" ! " # $ % & ' ( ) * + , - . /

0 1 2 3 4 5 6 7 8 9 : ; < = > ?

@ A B C D E F G H I J K L M N O

P Q R S T U V W X Y Z [ \ ] ^ _

` a b c d e f g h i j k l m n o

p q r s t u v w x y z { | } ~


In this phase of our risk reduction effort, partners and users

will have the opportunity to further identify and correct any

anomalous behavior of their systems and their customer systems

that may be caused by mixed case and the expanded

punctuation/character set in this text product.


This product will be issued using mixed case text until June 30,

2014, at which time a decision will be made regarding its

continuance. Partners and users should be aware this product may

revert back to all uppercase letters at the end of this phase of

the risk reduction effort.


If you have questions, please contact:


Michael J. Szkil

Chief, Awareness Branch

Silver Spring, MD

301-713-0280, Ext. 111


National Public Information Notices are online at: