KVWX NEXRAD IMPACTS V1

The KVWX NEXRAD IMPACTS dataset consists of Next Generation Weather Radar (NEXRAD) Level II surveillance data that were collected at 31 NEXRAD sites from January 1 to March 1, 2020 during the Investigation of Microphysics and Precipitation for Atlantic Coast-Threatening Snowstorms (IMPACTS) field campaign. IMPACTS was a three-year sequence of winter season deployments conducted to study snowstorms over the U.S Atlantic Coast. The campaign aimed to (1) Provide observations critical to understanding the mechanisms of snowband formation, organization, and evolution; (2) Examine how the microphysical characteristics and likely growth mechanisms of snow particles vary across snowbands; and (3) Improve snowfall remote sensing interpretation and modeling to significantly advance prediction capabilities. There are currently 160 Weather Surveillance Radar-1988 Doppler (WSR-88D) or NEXRAD sites throughout the United States and abroad. These Level II datasets contain meteorological and dual-polarization base data quantities including: radar reflectivity, radial velocity, spectrum width, differential reflectivity, differential phase, and cross correlation ratio. The IMPACTS NEXRAD Level II data files are available in netCDF-4 format. It should be noted that this dataset will be updated in subsequent years of the IMPACTS campaign.

Data and Resources

Additional Info

Field	Value
Maintainer	Earthdata Forum
Last Updated	September 15, 2026, 02:11 (UTC)
Created	April 1, 2025, 16:49 (UTC)
accessLevel	public
bureauCode	{026:00}
catalog_conformsTo	https://project-open-data.cio.gov/v1.1/schema
harvest_object_id	0a17e6e1-6732-4bfd-aa3f-8df727763c25
harvest_source_id	b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title	Science Discovery Engine
identifier	10.5067/IMPACTS/NEXRAD/DATA131
license	https://www.usa.gov/government-works
modified	2026-09-07T22:16:01Z
programCode	{026:000}
publisher	NASA/MSFC/GHRC
resource-type	Dataset
source_datajson_identifier	true
source_hash	c86748e906824676bc0c02f39df6ca5f8d4af669b2bb970757f061306a54c3a9
source_schema_version	1.1
spatial	["CARTESIAN", [{"WestBoundingCoordinate": -92.9872, "NorthBoundingCoordinate": 42.3903, "EastBoundingCoordinate": -82.4619, "SouthBoundingCoordinate": 34.1302}]]
temporal	2020-01-01/2020-03-01
theme	{"Earth Science"}