Drought Information Summary

General Drought Information for Texas

There are many definitions for drought based on conceptual, operational or disciplinary perspectives.

Please read definition of drought.

Common Drought Indices:

Crop Moisture Index (CMI),

Palmer Drought Severity Index (PDSI),

Standardized Precipitation Index (SPI),

Keetch-Byram Drought Index (KBDI),

Reservoir Storage Index (RSI),

Streamflow Index (SFI).

Drought conditions in Texas by climatic region:

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Drought Severity by Climatic Region on 6/18/2013

Region ID	Region Name	Crop Moisture Index	Palmer Drought Severity Index	Standardized Precipitation Index	Keetch-Byram Drought Index	Reservoir Storage Index	Streamflow Index
	Context	Short-term meteorologic	General, hydrologic	Precipitation	Fire risk	Water supply	Streamflow
1	High Plains	Excessively Dry	Extreme Drought	Moderately Dry	High Risk	Exceptionally Low	Moderately Low
2	Low Rolling Plains	Excessively Dry	Severe Drought	Moderately Dry	Above Average	Severely Low	Extremely Low
3	North Central	Abnormally Dry	Moderate Drought	Near Normal	Above Average	Near Normal	Moderately Low
4	East Texas	Slightly Dry or Favorably Moist	Moderate Drought	Near Normal	Above Average	Near Normal	Near Normal
5	Trans Pecos	Abnormally Dry	Severe Drought	Near Normal	High Risk	Extremely Low	Exceptionally Low
6	Edwards Plateau	Abnormally Dry	Moderate Drought	Near Normal	Above Average	Severely Low	Near Normal
7	South Central	Excessively Dry	Severe Drought	Near Normal	Above Average	Moderately Low	Abnormally Dry
8	Upper Coast	Slightly Dry or Favorably Moist	Moderate Drought	Near Normal	High Risk	Near Normal	Moderately Low
9	Southern	Slightly Dry or Favorably Moist	Severe Drought	Near Normal	Average or Low	Severely Low	Near Normal
10	Lower Valley	Severely Dry	Severe Drought	Near Normal	High Risk	No Data	No Data

Severity of drought is illustrated by cell colors from the worst (dark red thru red, orange, yellow) to the least (light yellow) and no drought (white). The 6-month SPI is used throughout this summary.

Texas's drought information from other organizations:

Texas drought map from the National Drought Mitigation Center,
University of Nebraska in Lincoln:

Texas 6-month SPI-blend map from the Office of Texas State Climatologist @TAMU:

Current KBDI map from the Spatial Sciences Laboratory @TAMU: