As the FEMA Flood Insurance Rate Maps (FIRMs) get updated they will be posted first as Preliminary FIRMs.
Preliminary FIRMs can be viewed at two sites:
FEMA Preliminary FEMA Map Products (View map panels)
- hazards.fema.gov/femaportal/prelimdownload
- Data by panel as a .pdf (get the panel number from the FIRM Index Map at the bottom of the list.
- Note - .pdfs are large. Best saved down then opened in Adobe Acrobat.
- Data includes:
- Preliminary Flood Insurance Studies as a .pdf
- Preliminary FIRM data in GIS format
The FEMA Flood Map Changes Viewer (View data interactively)
- msc.fema.gov/fmcv
- How to use the FMCV .pdf
- Note - this data is posted later than the .pdfs at the FEMA Map Products site
- Data includes:
- Preliminary DFIRM Map Data (toggle on/off)
- Preliminary DFIRM Map Changes (toggle on/off)
- Pending DFIRM Map (After Appeal Period and before Effective date) (toggle on/off)
- National Flood Hazard Layer (Effective DFIRM data) (toggle on/off)
- https://msc.fema.gov/portal/home
- Effective FIRM data - interactive, by panel or by FIRMette
- Effective Flood Insurance Studies
- Recent Letters of Map Adjustment (LOMC/LOMA)
- Historic FIRMS and Flood Insurance Studies
- Link to the interactive National Flood Hazard Layer (NFHL)
- Link via "All Products" to FIRM data in GIS format
Updates on the release of Preliminary FIRM data is posted at: bit.ly/fema-map-update
Effective Digital Flood Insurance Rate Map data is posted at the Flood Ready Atlas bit.ly/floodatlas and on the ANR Natural Resources Atlas.
