Metric calculated as the percent of Climate Prediction Center extended range temperature and precipitation outlooks (outlooks out to 14 days) exceeding Heidke Skill Score (HSS) of 10 (10% better than a climatological forecast). To better track results, three individual metrics are tracked – 1) All forecasts combined, 2) Temperature only, and 3) Precipitation only.

A winter storm warning provides NOAA customers and partners advanced notice of a hazardous winter weather event that endangers life or property, or provides an impediment to commerce. Winter storm warnings are issued for winter weather phenomena like blizzards, ice storms, heavy sleet, and heavy snow. This performance indicator measures the advance warning lead time in hours of winter storm events.

Improving the accuracy and advance warnings of winter storms enables the public to take the necessary steps to prepare for disruptive winter weather conditions.

A winter storm warning provides NOAA customers and partners advanced notice of a hazardous winter weather event that endangers life or property, or provides an impediment to commerce. Winter storm warnings are issued for winter weather phenomena like blizzards, ice storms, heavy sleet, and heavy snow. This performance indicator measures the accuracy of winter storm events.

Improving the accuracy and advance warnings of winter storms enables the public to take the necessary steps to prepare for disruptive winter weather conditions.

The public, private sectors, emergency managers, and government institutions at all levels in this country and abroad use NOAA tropical cyclone forecasts to make decisions regarding the protection of life and property. This measure represents the difference between the projected intensity of these storms and the actual intensity in knots (kt) for Atlantic Basin tropical cyclones (i.e., tropical depressions, tropical storms, and hurricanes).

* Annual Hurricane Season begins June 1 and ends November 30. The final values are produced after a verification and validation period.

The measure is validated by computing the average difference (error) for all the 48-hour forecasts occurring during a calendar year. Because tropical cyclones are relatively rare events, this measure can show significant annual volatility. Projecting the long-term trend, and basing out-year goals on that trend, is preferred over making large upward or downward changes to the targets each year.

This measure tracks a range of contributions to address coastal community risk, vulnerability, and resilience to coastal hazards. It does this by using an index that incorporates a range of NOAA-sponsored activities, including training and technical assistance that communities have engaged in to mitigate their susceptibility to coastal hazards. This measure illuminates how NOAA is improving integration of its coastal programs and the Nation's capacity for end to end preparedness, response, recovery and resilience to hazards.

For each reported flash flood event, the flash flood warning lead-time is the difference in minutes between the issuance of a flash flood warning and the onset of a geographically corresponding flash flood event. The lead times for all flash flood events, within the United States and territories served by the National Weather Service, are averaged to calculate the national average flash flood warning lead-time metric for a given fiscal year. This average includes all warned events with zero lead times and all unwarned events.

Historically, flash flood warnings were issued and verified on a countywide basis. Starting in FY 2010, the storm-based warnings were implemented with verification based solely for the areas impacted by the warning and event.

Each site within the National Marine Sanctuary System conducts or facilitates characterization, monitoring, and research to protect the resources in the system. A series of questions are posed to all sanctuaries as a starting point for the creation of periodic condition reports that rate the status and trends of key resources, processes, and resource services provided. One way to determine how comprehensively we are conducting monitoring in a sanctuary, or gathering information for use in the condition reports, is to quantify the proportion of relevant questions and ecosystem services for which experts are able to provide ratings. The higher the proportion, the more adequate the monitoring program.

Metric calculated as the percent of Climate Prediction Center extended range temperature and precipitation outlooks (outlooks out to 14 days) exceeding Heidke Skill Score (HSS) of 10 (10% better than a climatological forecast). To better track results, three individual metrics are tracked – 1) All forecasts combined, 2) Temperature only, and 3) Precipitation only.

An important purpose of national marine sanctuaries is to ensure that the significant resources they protect provide benefits to the public. This performance measure is intended to track the extent to which marine sanctuaries benefit the public through the provision of “resource services”. Resource services include commonly defined “ecosystem services” as well as the services provided by archaeological resources. The measure uses status ratings from sanctuary condition reports to quantify the proportion of services rated as either “Good” or “Good/Fair,” both of which are considered acceptable levels of service potential.

Metric calculated as the percent of Climate Prediction Center extended (outlooks out to 14 days) and long range (monthly and seasonal outlooks) temperature and precipitation outlooks exceeding Heidke Skill Score (HSS) of 10 (10% better than a climatological forecast). Due to the scarcity of long range outlooks (six per month), scores are smoothed over a three year period. To better track results, three individual metrics are tracked – 1) All forecasts combined, 2) Temperature only, and 3) Precipitation only.