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Our Mission

Organize the World's Information and Make It Universally Accessible

Our History


Automated Flood Warning Systems

The Automated Flood Warning Systems (AFWS) is a network of numerous local flood-warning systems, rain gauges which integrate and share information from 1900 sensors in 12 states.

The goals of the IFLOWS Program are:

  • Substantially reduce the annual loss of life from flash floods
  • Reduce property damage
  • Reduce disruption of commerce and human activities

Advanced Hydrologic Prediction Service

he Advanced Hydrologic Prediction Service (AHPS) is a new and essential component of our Climate, Water, and Weather Services. AHPS is a web based suite of accurate and information-rich forecast products. They display the magnitude and uncertainty of occurrence of floods or droughts, from hours to days and months, in advance.



2004 – Our year for Climate

In the early part of 2004, ONS began the construction of the Weather.gov/Climate website where the website displays detailed daily weather statistics including temperature, precipitation, degree daysand wind. Since the initial construction, ONS has added in more functionality such as humidity, sunrise/sunset, and record temperature data via text based products.

Local 3-month Temperature Outlook

Towards the end of 2004, ONS created The Local 3-month Temperature Outlook (L3MTO) product. The product provides probabilistic local forecasts of 3-month average daily mean temperatures for thirteen consecutive 3-month periods (January-February-March (JFM), February-March-April (FMA), etc.).


West Virginia Division of Homeland Security and Emergency Management Flood Warning System

In April of 2005, ONS was contacted to update and maintain the www.rainfall.net website.

The purpose of the Integrated Flood Observation and Warning System (IFLOWS) is to reduce the annual loss of life from flash floods, reduce property damage, and reduce disruption of commerce and human activities.

Precipitation Mapping

In the later part of 2005, ONS was contacted to update and maintain the http://water.weather.gov/precip website.

Precipitation mapping is a system which takes raw data provided by NWS, converts said data to a graphical representation, and serves this data to a frontend interface where it can be examined by the user. This system has recently been upgraded to a full tile system used to serve large quantities of graphics to user quickly with a low client side costs.


Flood Inundation Mapping

The National Weather Service Inundation Mapping Interface is a web based tool that is integrated into the AHPS web suite and provides flood inundation maps that show the extent of flooding expected spatially over a given area. This is a geographic information system (GIS) project that ONS developed for the National Weather Service Office of Hydrologic Development in conjunction with the Office of Climate Water and Weather Services, US Army Corps of Engineers and US Geological Survey. ONS has developed 94 sites to date with additional sites planned to be completed in the next few years since becoming a national level project.



Local Climate Analysis Tool

What is the Local Climate Analysis Tool?

The Local Climate Analysis Tool (LCAT) provides access to climate data and methods for local climate studies to increase user expertise in climate trends in the context of global climate change, answer user inquiries and link climate to weather and water information.



What are we currently working on?

It’s a new year. Anything is possible.

Who We’ve Worked With

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