[nws-changes] 20130123: Elimination of EYE and Addition of CENTER in temp drop message Fwd: ADMIN NOTICE NOUS41 KWBC

• To: nws-changes@xxxxxxxxxxxxxxxx
• Subject: [nws-changes] 20130123: Elimination of EYE and Addition of CENTER in temp drop message Fwd: ADMIN NOTICE NOUS41 KWBC
• From: Linda Miller <lmiller@xxxxxxxxxxxxxxxx>
• Date: Wed, 23 Jan 2013 07:28:45 -0700

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

117
NOUS41 KWBC 231415
PNSWSH

Service Change Notice 13-6
National Weather Service Headquarters Washington DC
915 AM EST Wed Jan 23 2013

TO:          Subscribers:
             -Family of Services
             -NOAA Weather Wire Service
             -Emergency Managers Weather Information Network
             -NOAAPORT
             Other NWS partners and NWS employees

FROM:        Mark Tew
             Chief, Marine and Coastal Services Branch

             Possible Remarks in the Temp Drop Message for
             Tropical Cyclones in the Atlantic, Eastern Pacific,
             Central Pacific and Western Pacific Hurricane
             Basins Effective May 15, 2013

To minimize confusion and increase consistency with other storm-
related items, the changes detailed below will become effective
on May 15, 2013, for the Temp Drop Message (TDM). The TDM as
reported from Department of Defense (DOD) and NOAA aircraft
conducting reconnaissance missions for tropical cyclones. There
are no changes to WMO Headers or AWIPS IDs for the TDMs.

Currently, the Remarks Section (Data Identifer 62626) of the TDM
allows use of the word EYE. Dropsonde (sonde) operators have
been using the word EYE in the Remarks for all sondes released
in the center of all tropical cyclones; however, use of the word
EYE might suggest there is a partial or complete eyewall, when
this may not be the case.

Therefore, effective May 15, 2013, the EYE remark in the Remarks
section will no longer be used. The word CENTER may be used in
the Remarks section. The use of the word CENTER will indicate
the sonde was released in the center of a tropical cyclone,
regardless of whether an actual eye exists.

In summary, effective May 15, 2013, only the following remarks
will be used in the TDM:  CENTER, EYEWALL XXX, MXWNDBND, or
RAINBAND.

Table G-6, Temp Drop Code, Identifier 62626 and Figure G-3,
Example Temp Drop Message for Tropical Cyclones, are provided in
the National Hurricane Operations Plan.  The 2012 plan is
provided on line at:

http://www.ofcm.gov

The 2013 NHOP will be posted on line by June 1, 2013, along with
the new TDM format for 2013 in Table G-6 and a new example in
Figure G-3.

If you have questions regarding this notice, please contact:

     National Weather Service
     Marine and Coastal Services Branch
     Silver Spring, Maryland  20910
     Telephone:  301-713-1677 x121
     e mail:  john.f.kuhn@xxxxxxxx

Service Change Notices are online at:

     http://www.nws.noaa.gov/om/notif.htm

$$