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Boundary
The 13 Weather Service (NWS) River Forecast Centers (RFC) produce Quantitative Precipitation Estimates (QPE) for their individual RFC areas. The RFCs produce the data using a... -
LOMRs
The National Flood Hazard Layer (NFHL) is a geospatial database that contains current effective flood hazard data. FEMA provides the flood hazard data to support the National... -
USNG 10000m
U.S. National Grid This feature layer, utilizing data from the Federal Geographic Data Committee (FGDC), displays the U.S. National Grid (USNG). The FGDC provides standards for... -
Flood Hazard Boundaries
The National Flood Hazard Layer (NFHL) is a geospatial database that contains current effective flood hazard data. FEMA provides the flood hazard data to support the National... -
NAPSG Situational Awareness Web Map
Purpose: This is a web map used for a situational awareness viewer. Click on links below for more information, this is just a summary of the layers in this map as of 09/14/2018.... -
U.S. National Grid
U.S. National Grid This feature layer, utilizing data from the Federal Geographic Data Committee (FGDC), displays the U.S. National Grid (USNG). The FGDC provides standards for... -
USNG 6x8 Zones
U.S. National Grid This feature layer, utilizing data from the Federal Geographic Data Committee (FGDC), displays the U.S. National Grid (USNG). The FGDC provides standards for... -
Tornado Risk Index Rating, County, National Risk Index
National Risk Index Data Version: December 2025 (1.20.0) A tornado is a narrow, violently rotating column of air that extends from the base of a thunderstorm to the ground and... -
Day 2 Probabilistic Tornado Outlook
The Storm Prediction Center (SPC) Weather Outlooks Web Service offers various polygon layers representing Convection Outlooks from Day 1 to Day 3. These encompass Category... -
Flood Hazard Zones
The National Flood Hazard Layer (NFHL) is a geospatial database that contains current effective flood hazard data. FEMA provides the flood hazard data to support the National... -
National Risk Index Census Tracts
National Risk Index Data Version: December 2025 (1.20.0) The National Risk Index Census Tracts feature layer contains Census tract-level data for the Risk Index, Expected Annual... -
USNG 100000m
U.S. National Grid This feature layer, utilizing data from the Federal Geographic Data Committee (FGDC), displays the U.S. National Grid (USNG). The FGDC provides standards for... -
Gages
The National Flood Hazard Layer (NFHL) is a geospatial database that contains current effective flood hazard data. FEMA provides the flood hazard data to support the National... -
USNG 1000m
U.S. National Grid This feature layer, utilizing data from the Federal Geographic Data Committee (FGDC), displays the U.S. National Grid (USNG). The FGDC provides standards for... -
USA Freeway System (over 1:500k)
This layer presents rural and urban interstate highways. It is part of the National Highway Planning Network, published by the Federal Highway Administration as part of the... -
NFHL Availability
The National Flood Hazard Layer (NFHL) is a geospatial database that contains current effective flood hazard data. FEMA provides the flood hazard data to support the National... -
Where are the most socially vulnerable populations in the U.S.?
What is Social Vulnerability? Every community must prepare for and respond to hazardous events, whether a natural disaster like a tornado or a disease outbreak, or an... -
Nodes
The National Flood Hazard Layer (NFHL) is a geospatial database that contains current effective flood hazard data. FEMA provides the flood hazard data to support the National... -
National Risk Index Counties
National Risk Index Data Version: December 2025 (1.20.0) The National Risk Index Counties feature layer contains county-level data for the Risk Index, Expected Annual Loss,... -
National Flood Hazard Layer
The National Flood Hazard Layer (NFHL) is a geospatial database that contains current effective flood hazard data. FEMA provides the flood hazard data to support the National...