US Drought · Drought Monitor

Weekly drought coverage (D0–D4) · Winter Wheat Belt and national CONUS

Latest USDM map: 28 April 2026 4 May

Drought Stress Index

Winter Wheat Belt (KS+OK+TX+NE+CO+MT+SD)

49.4 / 100

Modéré

D2+ pondéré par production

CONUS National

D0 Anormalement sec75.4%

D1 Modéré61.7%

D2 Sévère43.8%

D3 Extrême19.1%

D4 Exceptionnel2.4%

Semaine affichée

20 semaines disponibles

Depuis 16 Dec 2025

Sécheresse D2+ par état : 28 Apr 2026

Chargement de la carte…

Aucune sécheresse

D0 Anormalement sec

D1 Modéré

D2 Sévère

D3 Extrême

D4 Exceptionnel

Methodology

US Drought Monitor (USDM) : Published every Thursday by the National Drought Mitigation Center (Univ. Nebraska). D0→D4 values are cumulative: D2 = area in D2 or worse (severe, extreme, exceptional).

Drought Stress Index (DSI) : Composite score 0–100 calculated as the weighted average of D2+ per state, weighted by share of national winter wheat production (KS 35%, TX 15%, OK 13%, NE 10%, CO 8%, MT 8%, SD 6%).

WASDE Link : The % of KS+OK+TX in D2-D4 at mid-March is a leading indicator of WASDE May wheat yield estimates. A high DSI in March/April foreshadows a downward revision of production.

Source: USDA / University of Nebraska-Lincoln : droughtmonitor.unl.edu