NOUS41 KWBC 231540



Service Change Notice 18-30

National Weather Service Headquarters Silver Spring MD

1140 AM EDT Fri Mar 23 2018


To: Subscribers

-NOAA Weather Wire Service

-Emergency Managers Weather Information Network


Other NWS Partners and Employees


From: Terrance J. Clark

Director, WSR-88D Radar Operations Center


Subject: WSR-88D Mid-Volume Rescan of Low-Level Elevations

Field Test to Begin on or around May 14, 2018


The Radar Operations Center will begin the Mid-Volume Rescan of

Low-Level Elevations (MRLE) Field Test at 15 radar sites

beginning on or around May 14, 2018. This date is dependent on

RDA/RPG Build 18.0 deployment. MRLE is similar to the

Supplemental Adaptive Intra-Volume Low-Level Scan (SAILS)

technique where an additional low-level scan is provided each

volume scan; however, MRLE allows for up to four low elevation

angles to be repeated during a single volume scan. More details,

including test datasets, are available on the Radar Operations

Center's website:


The field test is expected to run approximately one year. The

15 sites participating in the MRLE Field Test are as follows:


KAMA Amarillo, TX

KDGX Jackson, MS

KJKL Jackson, KY

KLSX St. Louis, MO

KEMX Tucson, AZ


KICT Wichita, KS

KIND Indianapolis, IN

KDVN Quad Cities, IA

KILN Wilmington, OH

KPUX Pueblo, CO

KEWX Austin/San Antonio, TX

KENX Albany, NY

KRAX Raleigh, NC

KUDX Rapid City, SD


For questions or comments, please contact:

Jessica Schultz

NWS Radar Focal Point

Radar Operations Center


National Service Change Notices are online at: