Heavy Rainfall for Portions of the West and Southern Plains; Dangerous Heat for the Northwest

Monsoonal flow coinciding with a frontal boundary will focus more showers and thunderstorms across the central Great Basin, central Rockies, Southwest into the Southern Plains. Heavy rainfall may bring about instances of flash flooding. Meanwhile, record setting heat continues for the Pacific Northwest through Monday. Heat combining with dry conditions could allow for any fires to quickly spread. Read More >

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Monthly Outlook	Rain Needed To End Drought

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Precipitation Trends

7 Day % Normal	14 Day % Normal	30 Day % Normal	90 Day % Normal	12 Month % Normal

Temperature Trends

7 Depart. Normal	14 Depart. Normal	30 Depart. Normal	YTD Depart. Normal	12 Month Dept. Normal

Drought Ingredients

Crop Moisture	Palmer Index	NLADS 1M Moisture Percentile	CPC Soil Moisture

NASA Grace SFC Soil Moisture Percentile	NASA Grace Root Zone Moisture Percentile	NASA Grace Groundwater Percentile

The maps are based on data from NASA's Gravity Recovery and Climate Experiment (GRACE) satellites, which detect small changes in the Earth's gravity field caused by the redistribution of water on and beneath the land surface. The paired satellites travel about 137 miles (220 km) apart and record small changes in the distance separating them as they encounter variations in the Earth's gravitational field.

Short Term Drought Blend	Short Term Components	Long Term Drought Blend	Long Term Components

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VegDri

VegDri: Two variables related to general vegetation conditions – the Percent Average Seasonal Greenness (PASG) and Start of Season Anomaly (SOSA) – are calculated from satellite-based observations and incorporated into the VegDRI. Both variables are calculated from normalized difference vegetation index (NDVI) data acquired by NOAA’s Advanced Very High Resolution Radiometer (AVHRR). Climate-related variables incorporated into VegDRI include the Palmer Drought Severity Index (PDSI) and the Standardized Precipitation Index (SPI). Information about soils, land cover, land use, and the ecological setting are the types of biophysical data incorporated into VegDRI. This information is critical because the climate-vegetation response can vary depending on these different environmental characteristics.

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Heavy Rainfall for Portions of the West and Southern Plains; Dangerous Heat for the Northwest

Bismarck Situational Awareness