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CARC Update

Learn about the Soil Moisture Index (SMI) and how it can help assess soil moisture for irrigation scheduling. Get insights on water year projections and Platte River updates. Plan ahead with June temperature and precipitation outlooks.

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CARC Update

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  1. CARC Update Allen Dutcher State Climatologist - Nebraska adutcher1@unl.edu (402)-472-5206

  2. Equatorial Pacific Sea Surface Temperatures

  3. Water Year Precipitation

  4. SMI maps • The soil moisture index (SMI) scales the fraction of available water in a 50 cm (~20 in.) profile • Scaled such that 0.0 is the equivalent of 50% available water • 5.0 represents a soil at field capacity and -5.0 represents a soil at wilting point • Measured under grass cover • Can be used to approximate soil moisture in nearby grain fields

  5. Surplus or Deficit maps • The surplus or deficit maps show how much water: • Is needed to get the soil profile back to 50% available water (shown on the map as a deficit) • Is left in the soil profile before the 50% threshold is reached (shown on the map as a surplus) • The colored dot represents the SMI at that location • Irrigation scheduling possibilities?

  6. Water Year Precipitation Departures

  7. Water Year Percent of Normal

  8. Water Year Percent of Normal Precipitation - National

  9. Current 7-Day Soil Temperatures

  10. Platte River Update • 2 Million acre-feet of runoff projected • Current storage: 830,000 acre-feet • Flood pool storage: 250,000 acre-feet • Water releases increased by CNPPID with high flows for at least 30 days • Near record to record river stages and doesn’t include southern branch flows • Sudden warmth and/or heavy rainfall would aggravate the situation • Irrigation will determine summer flood risk

  11. June Temperature Outlook

  12. June Precipitation Outlook

  13. June-AugustTemperature Outlook

  14. June-AugustPrecipitation Outlook

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