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Multi-Radar/Multi-Sensor System (MRMS)

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NSSL NOAA National Severe Storms Laboratory

About NSSL
Organization

History

NSSL @ 60

Awards

Scientific Challenges

Lab Review 2021

Events

Visitor Info

Weather Research
Thunderstorms

Tornadoes

Flooding

Lightning

Hail

Damaging Winds

Winter Weather

Social Science

Research Tools
Radar

Testbeds

Observation

Simulation

Decision Support

Warning

Forecast

Science Applications

NSSL Data Repository (PARR)

Projects
ANCHOR

ATD

CAMS

FACETs

NOAA HWT

mPING

MRMS

PHI

VORTEX-SE / VORTEX USA

Warn on Forecast

Field Projects

People
Staff Directory

Staff Profiles

Publications

Jobs

Students

Outreach

News & Media
NSSL News

Video

Fact Sheets

Podcasts

Media Resources

Education
Severe Weather 101

For Educators

For Students

For Everyone

NSSL Home

Projects

Multi-Radar/Multi-Sensor System (MRMS)

Multi-Radar/Multi-Sensor System (MRMS)

The MRMS system was developed to produce severe weather, transportation, and precipitation products for improved decision-making capability to improve hazardous weather forecasts and warnings, along with hydrology, aviation, and numerical weather prediction.

MRMS is a system with fully-automated algorithms that quickly and intelligently integrate data streams from multiple radars, surface and upper air observations, lightning detection systems, satellite observations, and forecast models. Numerous two-dimensional multiple-sensor products offer assistance for hail, wind, tornado, quantitative precipitation estimations, convection, icing, and turbulence diagnosis.

Current work:

Ingest of WSR-88D and Canadian radar networks along with commercial and U.S. Terminal Doppler Weather Radars (TDWRs)

Advanced CONUS 4D dual-polarization and reflectivity mosaics

Initial 4D dual-pol Hydrometeor CONUS mosaic for model data assimilation

Advanced dual-polarization quality control of radar data and hydrometeor classification for more accurate precipitation type and rate products

Advanced precipitation gauge observation quality control

Advancements to surface precipitation estimations with evaporation corrections and radar gap-filling techniques

Full product suites for Alaska, Hawaii, Caribbean, and Guam with initial connections to Mexican and Caribbean radars

Resolution of 1-km x 2-min update cycle with 3D mosaics at 31 vertical levels

Severe weather and aviation related products per FAA NextGen requirements

Initial road transportation and advanced winter weather products

Evaluating and advancing dual-pol algorithms specific to FAA NextGen requirements

Evaluating and advancing machine learning and artificial intelligence techniques along with product development within a cloud computing environment

MRMS is being used to develop and test new Federal Aviation Administration (FAA) NextGen products in addition to advancing techniques in quality control, icing detection, and turbulence in collaboration with the National Center for Atmospheric Research, the University Corporation for Atmospheric Research, and Lincoln Laboratories.

MRMS was deployed operationally in 2014 at the National Center for Environmental Prediction (NCEP). All of the 100+ products it produces are available via NCEP to all of the WFOs, RFCs, CWSUs and NCEP service centers. In addition, the MRMS product suite is publicly available to any other entity who wishes to access and use the data. Other federal agencies that use MRMS include FEMA, DOD, FAA, and USDA.

MRMS is the proposed operational version of the WDSS-II and NMQ research systems.

The MRMS system was jointly developed in cooperation with the Cooperative Institute for Severe and High-Impact Weather Research and Operations (CIWRO) (formerly CIMMS), and the University of Oklahoma retains the right to commercially license the software. Several leading weather information companies have previously licensed the MRMS system from the University of Oklahoma for commercial use, although the software is available for government at no cost.

Operational MRMS

GRIB2 IDs for MRMS data (updated for MRMS v12.2)

How to access data from NCEP

Reporting an operational problem

MRMS Operational Product Viewer (public)

MRMS Decadal Reanalysis

Mosaic NEXRAD Precipitation Data

Dataset Sharing Policy (PDF)

Related Links

MRMS QPE Blog

MRMS Fact Sheet (PDF)

MRMS News

The MRMS Team was awarded the NOAA Silver Medal in 2015 “for successful transition of the Multi-Radar, Multi-Sensor system into operations to provide critical radar-based products to forecast weather hazards.” [+]

The MRMS Team was awarded the NOAA Silver Medal in 2015 “for successful transition of the Multi-Radar, Multi-Sensor system into operations to provide critical radar-based products to forecast weather hazards.”

NOAA National Severe Storms Laboratory
120 David L. Boren Blvd.
Norman, OK73072
USA
(405) 325-3620

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