Real-time Sahm Rule Recession Indicator | FRED

**Overview**

This release contains information on the Sahm Recession Indicator which signals the beginning of a recession based on the three-month moving average of the national unemployment rate (U3) in the U.S. The U3 rate shows signs of a recession when it rises by 0.50 percentage points or more relative to its low in the past 12 months.

**Product Details**

Includes the following tables:

- **fs_fred.fred_sahmrealtime**
- **Update frequency:** Monthly
- **Source:** FRED
- **Description:** The included dataset contains the following columns: `DATE`, `SAHMREALTIME`. The `SAHMREALTIME` column represents percentage points based on the three-month moving average of the national unemployment rate at the time of the corresponding `DATE`.

**Data Sources**

The data in this product comes from **FRED**.

Short for Federal Reserve Economic Data, FRED is an online database consisting of hundreds of thousands of economic data time series from scores of national, international, public, and private sources.
FRED, created and maintained by the Research Department at the Federal Reserve Bank of St. Louis, goes far beyond simply providing data:
It combines data with a powerful mix of tools that help the user understand, interact with, display, and disseminate the data.
In essence, FRED helps users tell their data stories.

This product uses data from the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis.

- **Source Homepage:** [FRED](https://fred.stlouisfed.org/)
- **Source Data:** [Real-time Sahm Rule Recession Indicator | FRED ](https://fred.stlouisfed.org/series/SAHMREALTIME)
- **License:** [Full FRED® Services Terms of Use](https://fred.stlouisfed.org/legal/#full-fred-terms)
- **Frequency:** monthly

**数据集概览**
本次发布包含关于Sahm衰退指标（Sahm Recession Indicator）的相关信息。该指标基于美国全国失业率（U3）的三个月移动平均值，用于识别衰退的起始节点：当U3失业率较过去12个月的低点上升0.5个百分点及以上时，即预示衰退征兆。

**产品详情**
包含以下数据表：
- **fs_fred.fred_sahmrealtime**
- **更新频率：** 月度
- **来源：** FRED（联邦储备经济数据库，Federal Reserve Economic Data）
- **数据集说明：** 该数据集包含`DATE`与`SAHMREALTIME`两列。其中`SAHMREALTIME`列以百分点为单位，代表对应`DATE`时点基于全国失业率计算的三个月移动平均值。

**数据来源**
本产品的数据来源于**FRED（联邦储备经济数据库，Federal Reserve Economic Data）**。
FRED是圣路易斯联邦储备银行研究部创建并维护的在线数据库，收录了来自数十个国内外官方及私营机构的数十万条经济数据时间序列。该平台不仅提供基础数据服务，更整合了功能强大的工具套件，可帮助用户理解、交互、可视化及传播数据，本质上助力用户挖掘并讲述数据背后的故事。
本产品使用FRED®应用程序编程接口（API）的数据，但未经圣路易斯联邦储备银行背书或认证。

- **来源主页：** [FRED](https://fred.stlouisfed.org/)
- **来源数据：** [Real-time Sahm Rule Recession Indicator | FRED ](https://fred.stlouisfed.org/series/SAHMREALTIME)
- **许可协议：** [完整FRED®服务使用条款](https://fred.stlouisfed.org/legal/#full-fred-terms)
- **更新频率：** 月度

搜集汇总

背景与挑战

背景概述

该数据集提供基于美国失业率三个月移动平均值的Sahm实时经济衰退指标，当指标较过去12个月低点上升0.5个百分点时预示经济衰退。数据包含日期和指标值两列，由FRED经济数据库按月更新。