Disaster Analysis

NASS can now monitor agricultural disasters in near real-time and provide quantitative assessments using remotely sensed data and geospatial techniques. This page provides disaster assessments in geospatial data format, reports, and metadata as available. A flood monitoring methodology paper is located here.


Hurricane Dorian (September 2019)

Hurricane Dorian impacted areas of the eastern United States, including Florida, Georgia, South Carolina, North Carolina, and Virginia from September 3 – 7, 2019 with heavy rainfall, strong winds, and storm surges. The United States Department of Agriculture's National Agricultural Statistics Service (NASS) responded to inquiries regarding the extent of flooding from Hurricane Dorian over agricultural land in near-real time. Consequently, a flood mapping procedure, based on Copernicus Sentinel-1 Synthetic Aperture Radar data and the NASS Cropland Data Layer, was implemented in response to the flood event. The data, maps, and reports below identify the extent of inundation over cropland and pasture based on this analysis. The crop inundation layers are publically available for download.

Files available for download: Assessment Report | Raster Data Zipfile | Wind Swath Zipfile | Metadata

Map of Hurrican Dorian (Sept 2019)

Download higher resolution map (2550 pixels by 3300, 300 dpi) | PDF



Tropical Storm Barry (July 2019)

Tropical Storm Barry impacted areas of Louisiana, eastern Arkansas, western Tennessee, southeast Missouri, and northwest Mississippi, United States from July 12 – 15, 2019 with heavy rainfall, strong winds and storm surges. The United States Department of Agriculture's National Agricultural Statistics Service (NASS) responded to inquiries regarding the extent of flooding from Tropical Storm Barry over agricultural land in near real-time. Consequently, a recently developed flood mapping procedure, based on Copernicus Sentinel-1 Synthetic Aperture Radar data and the NASS Cropland Data Layer, was implemented in response to the flood event. The data, maps, and reports below identify the extent of inundation over cropland and pasture based on this analysis. There are several causes for anomalous water, which could include flooding, saturated fields from rainfall, ponding, or intentionally flooded rice and aquaculture fields. The crop inundation layers are publically available for download.

Files available for download: Assessment Report | Raster Data Zipfile | Metadata

Map of Tropical Storm Barry (July 2019)

Download higher resolution map (2550 pixels by 3300, 300 dpi) | PDF



Missouri and Illinois Flooding (May/June 2019)

The central United States experienced severe flooding during late May and early June, 2019. The United States Department of Agriculture's National Agricultural Statistics Service (NASS) responded to inquiries regarding the extent of flooding over agricultural land in Missouri and surrounding states. Water extent data (dates ranging from May 22 to June 11) from the NASA Disasters Program were used to determine anomalous water over cropland and pasture areas as derived from the 2018 NASS Cropland Data Layer program. The data and maps below identify the extent of anomalous water over cropland and pasture based on these data. There are several causes for anomalous water, which could include flooding, saturated fields from rainfall, ponding, or intentionally flooded rice fields. The crop inundation layers are publically available for download.

Files available for download: Raster Data Zipfile | Metadata

Map of Missouri Illinois Flooding May/June 2019

Download higher resolution map (2550 pixels by 3300, 300 dpi) | PDF


Additional Maps:
Missouri Flooding: May/June 2019
Thumbnail for Missouri Flooding map - May/June 2019 (high-res) PNG | PDF
Illinois Flooding: May/June 2019
Thumbnail for Illinois Flooding map - May/June 2019(high-res) PNG | PDF


Previous Years:

Last Modified: 09/26/2019