OpenFEMA Dataset: Mission Assignments - v1

Version: 1
Last Data Refresh: 03-02-2024
Entity Name MissionAssignments
API Endpoint
Update Frequency R/P1D
Program URL
Category Disaster Information
Keywords Mission Assignments


1.1 What is the data in the submission?

Mission Assignment, as defined in the 44 Code of Federal Regulations, is a work order issued by FEMA to another Federal agency directing completion of a specified task and citing funding, other managerial controls, and guidance.

Mission Assignments are essential and powerful tools for federal emergency management under the Stafford Act. Mission Assignments are distinct because they allow for deployment, employment and assistance from the full range of federal resources to support disaster needs.

1.2 Why does FEMA Issue Mission Assignments?

FEMA issues mission assignments in anticipation of, or in response to, a Presidential declaration of an emergency or major disaster. The Robert T. Stafford Disaster Relief and Emergency Assistance Act (Stafford Act) authorizes Mission Assignments.

When States, Tribes, or Territories are overwhelmed by disaster impacts, FEMA can fulfill requests for Federal assistance through a Mission Assignment. Mission Assignments are provided as a sourcing mechanism to direct and reimburse Other Federal Agencies for utilizing their capabilities to support disaster operations. Reimbursement of eligible expenditures are detailed in 44 Code of Federal Regulations 206.8 (c).

1.3 How are Mission Assignments Created?

Mission Assignments are administered, created and obligated, using DRF appropriations, as electronic forms within FEMA’s financial systems. Each mission assignment includes essential information required to direct other Federal Agencies to support and fulfill disaster needs, such as cost estimates, location of need, requestor, statement of work and period of performance. Mission Assignments can be amended to reflect the tempo of disaster activities, by changing period of performance dates, increasing and decreasing the costs required to complete the work, or recouping dollars based on early work completion or cancellation. This process of financially managing DRF dollars is an ongoing process that takes place before, during and after disaster activities have ended. Initial mission assignment obligation amounts do not reflect true costs incurred after billing and reimbursement.

This data set contains information required as part of Congressional bill - the Sandy Recovery Improvement Act of 2013, and The Disaster Recovery Reform Act of 2019. FEMA is providing the following information for stakeholders:

- State or Tribal Government

- Disaster Number

- Description of Disaster

- Agency

- Request for Assistance

- Obligations/Estimate

- Date Obligated

- Percentage of Cost for which the State or Tribal Government is responsible (the cost share)

For more information on Mission Assignments, the Sandy Recovery Improvement Act of 2013, and the Disaster Recovery Reform Act of 2019 visit

1.4 How is the data generated?

The data is derived from the National Emergency Management Information System (NEMIS). The system has been used since 1998 to process all mission assignments for FEMA's Mission Assignment (MA) program as the system of record. The dataset was extracted using FEMA's Enterprise Data Warehouse to ensure reliable, uniform data.

1.5 How can the data be used?

The data provides information regarding mission assignments issued to other federal agencies in response to Stafford Act incidents.

Note: The disaster costs reflected are not actual they include inflated estimations to ensure resources are available to address actual and potential life-saving, life-sustaining, and or mission-critical needs. This dataset is not intended to be used for any official federal financial report and should not be considered an official federal report.

Citation: The Agency’s preferred citation for datasets (API usage or file downloads) can be found on the OpenFEMA Terms and Conditions page, Citing Data section:

If you have media inquiries about this dataset, please email the FEMA News Desk at or call (202) 646-3272. For inquiries about FEMA's data and Open Government program, please email the OpenFEMA team at

Full Data

Format Address Record Count Approximate File Size
csv Link to csv 28639 medium (50MB - 500MB)
json Link to json 28639 medium (50MB - 500MB)
jsona Link to jsona 28639 medium (50MB - 500MB)
jsonl Link to jsonl 28639 medium (50MB - 500MB)

Data Fields

Name Title Type Description Is Searchable
maId Mission Assignment Identifier
Identifier for request, used to aggregate funding across multiple days yes
amendmentNumber Amendment Number
Obligation requests may be modified to adjust or add funds. This number identifies those amendments. The value is 0 if there are no amendments. yes
city City
Place of performance if available yes
stateorTribe State or Tribe
The name or phrase describing the U.S. state, district, territory, or Tribal government yes
zip Zip
Zip code for the place of performance if available yes
disasterNumber Disaster Number
Sequentially assigned number used to designate an event or incident declared as a disaster. For more information on the disaster process, yes
declarationType Declaration Type
Two character code that defines if this is a major disaster (DR), fire management (FM) or emergency declaration (ER). For more information on the disaster process, please visit: yes
agency Agency
Name of the entity requesting assistance yes
assistanceRequested Assistance Requested
Additional information about the assistance request yes
statementOfWork SOW
Description of the requested assistance no
disasterDescription Disaster Description
Type of incident (for example, Hurricane or Earthquake) yes
authority Authority
Authority under which Mission Assignments (MA) was issued (All Mission Assignments are issued under the Stafford Act) yes
dateRequested Date Requested
Date a State or Tribe requested assistance yes
dateObligated Date Obligated
Date the Mission Assignment was obligated yes
stateCostSharePct State Cost Share Percent
Percentage of the cost for which the state or tribal government is responsible yes
federalCostSharePct Federal Cost Share Percent
Percentage of the cost for which FEMA is responsible; computed as 1.0-StateCostShare yes
stateCostShareAmt State Cost Share Amount
Dollar amount of the cost for which the state or tribal government is responsible yes
federalCostShareAmt Federal Cost Share Amount
Dollar amount of the cost for which FEMA is responsible yes
requestedAmount Requested Amount
Total cost in dollars, as requested by state or tribal government. yes
obligationAmount Obligation Amount
Total dollars amount obligated yes
projectedCompletionDate Projected Completion Date
Estimated end of the mission. Subject to revision. yes
id ID
Unique ID assigned to the record yes

See Also

Access the metadata API calls for additional information:

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