|NATIONAL WEATHER SERVICE
SILVER SPRING, MARYLAND 20910-3283
|Operations Manual Letter
|Date of Issue:||11/10/98||Effective Date:||11/5/98|
|In Reply Refer To:||W/OM12||File With:||D-30|
|Subject:||Transcribed Weather Broadcast Text Products|
|References:||WSOM Chapter D-30, Transmittal Issuance 97-4, dated July 8, 1997|
Effective November 5, 1998, at 0000 UTC, the code for ice pellets is being changed in the United States from "PE" to "PL". This change is in accordance with the International Civil Aviation Organization (ICAO) change to code for ice pellets in the international METAR and TAF codes, which also becomes effective on November 5, 1998, at 0000 UTC.
As a result of that change, NWS offices preparing Transcribed Weather Broadcast Text Products (TWEBs) are instructed to begin using the new code "PL" when referring
to ice pellets in TWEBs, effective November 5, 1998, at
No specific reference is made to ice pellets in WSOM D-30, Transmittal Issuance 97-4, dated July 8, 1997, so no page changes are required in association with this change.
John J. Kelly, Jr.
for Weather Services