# How do you calculate the return period of a storm?

## How do you calculate the return period of a storm?

Determining Return Periods for Rainfall

- Locate the contour lines on either side of your location.
- Estimate how far you are between the contours from the lower contour line.
- Calculate the difference in rainfall total between the two lines.
- Multiply the rainfall difference by the distance you calculated for your location.

**What does a 10 year storm mean?**

Ten-year storm means a storm that is capable of producing rainfall expected to be equaled or exceeded on the average of once in 10 years. It may also be expressed as an exceedence probability with a 10% chance of being equaled or exceeded in any given year.

### What is a 10 year flood?

The magnitude of the 10-year flood has been determined through statistical analysis to be approximately 31,100 cubic feet per second (ft3/s). You can see from the graph that the actual interval between floods greater than this magnitude ranged from 4 to 28 years, but the average of these intervals is about 10 years.

**What is a 10 year rain?**

Ten-year storm or “Ten-Year Storm Event” means a storm that is capable of producing rainfall expected to be equaled or exceeded on the average of once in 10 years. It may also be expressed as an exceedence probability with a 10 percent chance of being equaled or exceeded in any given year.

## What is a 10 year storm event?

This rainfall depth is termed the two-year design storm. Similarly, a flood that has a 10% chance of occurring in any given year is termed a “ten-year flood.” A ten-year flood occurs when a storm event produces about 4.5 to 5.5 inches of rain in a 24 hour period.

**What is a 10 year storm?**

### How often does a 10 year storm occur?

**What does a 10 year flood mean?**

## What is the chance that a 100-year flood will occur next year?

The 100-year recurrence interval means that a flood of that magnitude has a one percent chance of occurring in any given year.

**What is the 10 year Treasury rate?**

10 Year Treasury Rate – 54 Year Historical Chart. Interactive chart showing the daily 10 year treasury yield back to 1962. The 10 year treasury is the benchmark used to decide mortgage rates across the U.S. and is the most liquid and widely traded bond in the world. The current 10 year treasury yield as of October 18, 2019 is 1.76%.

### What is your S&P 500 10 year return?

S&P 500 10 Year Return is at 267.5%, compared to 280.7% last month and 176.4% last year. This is higher than the long term average of 106.7%. Loading… 10 year return not including dividends. View and export this data back to 1999. Upgrade now. S&P 500 10 Year Return is at 267.5%, compared to 280.7% last month and 176.4% last year.

**Is the average mutual fund return for a 10-year period accurate?**

The average mutual fund return for a 10-year period is used by many investors to chart the long-term performance of mutual funds, particularly equity mutual funds. However, there are many caveats that the investor should consider when weighing investment options.

## What is the risk free rate of the 10 year yield?

Many analysts will use the 10 year yield as the “risk free” rate when valuing the markets or an individual security. Historically, the 10 Year treasury rate reached 15.84% in 1981 as the Fed raised benchmark rates in an effort to contain inflation. 10 Year Treasury Rate is at 1.42%, compared to 1.48% the previous market day and 0.90% last year.