[nws-changes] 20101206: correction-icing-Fwd: ADMIN NOTICE NOUS41 KWBC

-------- Original Message --------

NOUS41 KWBC 061847

Technical Implementation Notice 10-51 Corrected
National Weather Service Headquarters Washington DC
148 PM EST Mon Dec 6 2010

To:       National Weather Service Offices
          Federal Aviation Administration
          Family of Services Subscribers
          Other Customers of NWS Aviation Forecasts

From:     Cynthia Abelman
          Chief, Aviation Services Branch

Subject:  Corrected Date: Forecast Icing Severity Product
          To Be Converted From Experimental To Operational:
          Effective January 18 2011

Corrected to change date in subject line to 2011.

The following changes have no impact on NOAA Weather Wire
Service Subscribers

This amends a previous TIN 10-51 to note the FIP Potential Icing
Forecast Product has changed to a probability icing forecast

Effective Tuesday, January 18 2011 at 1300 Coordinated Universal
Time (UTC), the NWS Aviation Weather Center (AWC) in Kansas
City, MO, will convert the gridded Forecast Icing Severity (FIS)
from experimental to operational status.  The FIS provides
forecasts for the potential occurrence of aircraft icing.  In
addition the FIP Potential Icing Forecast Product has changed to
a Probability Icing Forecast Product. See the link below for
details on GRIB file changes.


The FIS domain covers the contiguous 48 United States and
adjacent coastal waters in 1000 foot increments between 1000 and
30,000 feet above Mean Sea Level.  The FIS is a forecast
extension of the current icing severity (CIP) product and
predicts the icing severity out to 12 hours. Forecast hours
include H+01, H+02, H+03, H+06, H+09, and H+12. The FIP is
produced automatically from the 20 km Rapid Update Cycle (RUC)
model runs.

The WMO Headings for the FIP Icing Severity are as follows.

               Flight    WMO
               Level     Heading
               -----     -----------
               010       YLX*93 KKCI
               020       YLX*95 KKCI
               030       YLX*90 KKCI
               040       YLX*84 KKCI
               050       YLX*85 KKCI
               060       YLX*81 KKCI
               070       YLX*78 KKCI
               080       YLX*75 KKCI
               090       YLX*73 KKCI
               100       YLX*70 KKCI
               110       YLX*67 KKCI
               120       YLX*65 KKCI
               130       YLX*62 KKCI
               140       YLX*60 KKCI
               150       YLX*57 KKCI
               160       YLX*55 KKCI
               170       YLX*53 KKCI
               180       YLX*50 KKCI
               190       YLX*48 KKCI
               200       YLX*46 KKCI
               210       YLX*45 KKCI
               220       YLX*43 KKCI
               230       YLX*41 KKCI
               240       YLX*39 KKCI
               250       YLX*38 KKCI
               260       YLX*36 KKCI
               270       YLX*34 KKCI
               280       YLX*33 KKCI
               290       YLX*32 KKCI
               300       YLX*30 KKCI

Where     *  = B    = 01 Hour Forecast
          *  = C    = 02 Hour Forecast
          *  = D    = 03 Hour Forecast
          *  = G    = 06 Hour Forecast
          *  = J    = 09 Hour Forecast
          *  = M    = 12 Hour Forecast

On January 18, 2011, FIP Icing Severity Output in gridded binary
(GRIB) format will be available through:

1. NWS Service ftp Servers:


2. The Family Of Services (FOS) high resolution data service and
   server access service.

To obtain sample gridded FIP dat,a contact:

     Mr. Robert Sallee
     Senior Software Engineer - Aviation Weather Center
     7220 NW 101st Terrace
     Room 101
     Kansas City Mo 64153

If you have questions about this product contact:

     Mr. Pat Murphy
     Warning Coordination Meteorologist
     Aviation Weather Center
     Kansas City Mo 64153

National Technical Implementation Notices are online at: