USDA/NASS Disaster Analysis Web Page
https://www.nass.usda.gov/Research_and_Science/Disaster-Analysis/index.php

Metadata
Event: 2023 Midwest Derecho

Last Updated: July 18, 2023

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File Name: 2023_Midwest_Derecho_Report.pdf

Description: On June 29, 2023, the Midwestern United States experienced a derecho event with widespread, destructive winds. Frequent winds of over 80 mph damaged several forested and agricultural areas, as well as many urban and agricultural structures. The United States Department of Agriculture's National Agricultural Statistics Service (NASS) responded to inquiries regarding the extent of potential damage to cropland in Missouri, Illinois, Indiana, and Kentucky from this event. Using NOAA Real-Time Mesoscale Analysis (RTMA) wind speed (gust) data and tornado track data dated June 29, 2023 from the NOAA National Weather Service and Sentinel-1 SAR data dated July 3 and July 8, 2023, NASS identified major planted cropland areas (defined by the 2022 Cropland Data Layer) that may have been affected by the derecho, and compared these estimates with 2022 official NASS estimates. 


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Wind Inputs 1

Description: NOAA Real-Time Mesoscale Analysis (RTMA) wind speed (gust) for wind damage assessment. RTMA data is a high-spatial and temporal resolution analysis for near-surface weather conditions. This dataset includes hourly analyses at 2.5 km for CONUS. 
Obtained From: Google Earth Engine
Website: https://developers.google.com/earth-engine/datasets/catalog/NOAA_NWS_RTMA

Attribute Table

Value	WindGust	Definition
EF0	65-85 mph	Wind Gusts 65 mph to 85 mph
EF1	85-110 mph	Wind Gusts 85 mph to 110 mph


Wind Inputs 2

Description: 5 tornado tracks provided by NOAA for wind damage assessment
Obtained From: NOAA NWS
Website: https://www.weather.gov/ilx/june29_derecho

Flood inputs

Description: Using Sentinel-1 SAR images for flood impact assessment. SAR images acquired from July 3 and 8 covering northeastern, central and southern IL, central and southwestern IN and western Kentucky were used for flood detection and assessment. 
Obtained From: Google Earth Engine
Website: https://zheli.users.earthengine.app/view/flood-detection-and-monitoring-system-v17-beta


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Agricultural Inputs

Description: NASS 2022 Official Estimates (planted acres)
Obtained From: Quickstats
Website: https://quickstats.nass.usda.gov/

Description: NASS 2022 Cropland Data Layer (planted acres)
Obtained From: Google Earth Engine
Website: https://developers.google.com/earth-engine/datasets/catalog/USDA_NASS_CDL
Disclaimer: These data are not official NASS estimates. 


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Processing Software

Google Earth Engine
ArcGIS Pro


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