Excessive Rainfall Possible for the Gulf Coast and Florida; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across parts of the Gulf Coast into central/northern Florida early this week. Abnormally hot, potentially record-breaking, temperatures will continue for southern California and stretch north toward the Bay Area and Central Valley this week. Read More >

The Hydrologic Ensemble Forecasting System (HEFS) is a probabilistic forecasting tool currently under development by the National Weather Service (NWS). The goals of HEFS are to provide hydrologic forecasts including an analysis of “probable outcomes” and to minimize biases in the atmospheric models and in the hydrologic models.

Below is information about HEFS:

Hydrologic Ensemble Forecast System (HEFS)
- HEFS on NWPS (Iowa)
- HEFS Experimental Data Webpage
  - NWS Des Moines service area
HEFS Resources
- Information and FAQs about HEFS

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Excessive Rainfall Possible for the Gulf Coast and Florida; October Heat Wave in California

Hydrologic Ensemble Forecast System (HEFS) Information