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Winter Product Simplification: Coming Next Winter

Winter Product Simplification: Coming Next Winter. NWS Partner’s Meeting June 18, 2008. Background. NWSI 10-513 (WFO Winter Weather Products) specifies a large suite of event-specific advisories and warnings related to winter weather hazards.

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Winter Product Simplification: Coming Next Winter

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  1. Winter Product Simplification:Coming Next Winter NWS Partner’s Meeting June 18, 2008

  2. Background • NWSI 10-513 (WFO Winter Weather Products) specifies a large suite of event-specific advisories and warnings related to winter weather hazards. • Motivation to implement current suite (November 2005) was based in flexibility afforded by VTEC and results from Public Services Survey. • However, internal and external feedback now strongly suggests we should return to a more simplified approach.

  3. A LAKE EFFECT SITUATIONFEBRUARY 6, 2006

  4. CONFUSION IN PHILADELPHIA AND NEW YORK CITY MEDIA MARKETS

  5. Why Change Now? • Difficult to describe and distinguish among the many products associated with complex winter events. • Much time spent on (and confusion resulting from) canceling and re-issuing products with little difference in impacts. • During significant winter events (many which include SVR), WWA map becomes cluttered. • Large number of available products results in occasional inconsistencies among adjoining WFOs. • Importantly: Regions concur individual warnings and advisories should include all events of similar impact. The proposal accomplishes this goal.

  6. Example of Current Product NEZ044‑045‑050>053‑065>067‑078‑011900‑ /O.NEW.KOAX.HS.W.0006.020301T1900Z-020302T1200Z/ BUTLER‑CASS‑DODGE‑DOUGLAS‑HARRISON‑LANCASTER‑MILLS POTTAWATTAMIE‑SALINE‑SARPY‑SAUNDERS‑SEWARD‑SHELBY‑ INCLUDING THE CITIES OF...LINCOLN AND OMAHA 430 AM CST FRI MAR 1 2007 ...HEAVY SNOW WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 6 AM CST SATURDAY.... THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A HEAVY SNOW WARNING. LIGHT SNOW WILL BECOME MORE WIDESPREAD AND HEAVY THIS AFTERNOON... WITH 8 TO 12 INCHES OF TOTAL SNOWFALL ACCUMULATION BEFORE THE SNOW ENDS LATE TONIGHT. NORTHEAST WINDS AT 15 TO 25 MPH WILL BECOME NORTH TONIGHT...PRODUCING SOME BLOWING AND DRIFTING OF SNOW.

  7. Example of Simplified Product NEZ044‑045‑050>053‑065>067‑078‑011900‑ /O.NEW.KOAX.WS.W.0006.020301T1900Z-020302T1200Z/ BUTLER‑CASS‑DODGE‑DOUGLAS‑HARRISON‑LANCASTER‑MILLS ‑MONTGOMERY‑POTTAWATTAMIE‑SALINE‑SARPY‑SAUNDERS‑ SEWARD‑SHELBY‑WASHINGTON‑ INCLUDING THE CITIES OF...LINCOLN AND OMAHA 430 AM CST FRI MAR 1 2007 ...WINTER STORM WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 6 AM CST SATURDAY.... THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A WINTER STORM WARNING FOR HEAVY SNOW. LIGHT SNOW WILL BECOME MORE WIDESPREAD AND HEAVY THIS AFTERNOON... WITH 8 TO 12 INCHES OF TOTAL SNOWFALL ACCUMULATION BEFORE THE SNOW ENDS LATE TONIGHT. NORTHEAST WINDS AT 15 TO 25 MPH WILL BECOME NORTH TONIGHT...PRODUCING SOME BLOWING AND DRIFTING OF SNOW

  8. Comment Process • Original Public Information Statement (PNS) sent on February 28. • Over 100 comments were received. • Response among those who expressed an opinion was overwhelmingly positive (85%). • Large majority of respondents were broadcasters & EMs. • Service Change Notice to formally notify of change was issued May 12 for September 9 implementation.

  9. Total Number of Responses - 108

  10. Responses by Affiliation

  11. Sample Comments - Supporters

  12. From Those Who Disagreed • The proposal works against what the VTEC was • designed to do. • Response: • - True, some codes will no longer be used… • - But comments strongly support they should not be used. • Sleet should keep it's own designation. • Response: • - It’s very rare for sleet to meet warning criteria. • - Sleet is usually a transition type & very difficult to forecast. • - Can be handled via Winter Wx Adv. or Winter Storm Warning

  13. From Those Who Disagreed (Cont’d) 3)Would require opening the notice or read further to determine why the warning or advisory was issued. Response: Event specific information will be prominently found in the first line of the text, which is generally read by broadcasters and announcers. 4) Mobile phone text alerts may rely on what the product is called, without being able to present the text. Response: Valid concern - we will work to remedy via the use of CAP and the Next Gen. Warning Tool.

  14. Next Steps • Update forecaster training and assure completion by August 15. • Update NWSI 10-513 prior to implementation. • Continue to collect comments from you following implementation for future improvement.

  15. Questions?

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