The Australian Nearmap Post-Catastrophe program captures high resolution Vertical imagery in the aftermath of natural disasters that have significant impact on property, infrastructure and communities in Australia.

Customers in Australia who have subscribed to the Nearmap ImpactResponse product will receive exclusive access to new post-catastrophe surveys for a limited period once the surveys have been published.



Definition of Post-Catastrophe Events

Nearmap uses a range of criteria to determine which events are captured under the Post-Catastrophe program. Events are assessed based on inputs such as the scale of impact to communities, infrastructure, property, agriculture and industry, and the geographical areas affected by the event. Survey capture decisions also consider whether an event is officially declared a disaster or emergency by federal and state government organisations and official industry bodies.

Due to the variability of these types of events, Nearmap assesses each on its own merits based on the criteria below. For example, a significant tropical storm that is officially declared a lower category than stated below may still meet other Nearmap criteria for capture.

Event Types

The following event types are included in the Australian Nearmap Post-Catastrophe program:

Event TypeDefinition

Bushfire

Bushfire events that have a significant impact on infrastructure, property or agricultural areas where customer interests are affected.

Cyclone, Monsoons, Tropical StormsCategory 4 or higher events that have a significant impact on infrastructure, property or agricultural areas where customer interests are affected.
HailAny intensive hail event that has a significant impact on infrastructure, property or agricultural areas where customer interests are affected.
EarthquakeMagnitude 5.3 or higher events that have a significant impact on infrastructure, property or agricultural areas where customer interests are affected.
FloodAny flooding event, including tsunamis and inundation, that has a significant impact on infrastructure, property or agricultural areas where customer interests are affected.


Exclusive Access to Post-Catastrophe Surveys

Australian customers who have subscribed to the Nearmap ImpactResponse product will have exclusive access to new post-catastrophe surveys for 30 days from the time they are published, after which the content is released for general viewing by all customers with a valid Australian Nearmap subscription. 


Working with Post-Catastrophe Surveys

To view post-catastrophe imagery within the embargo period, you’ll need to have subscribed to the Nearmap ImpactResponse product.  

Nearmap Post-Catastrophe surveys are captured as high-resolution Vertical imagery, which means post-catastrophe imagery can be viewed via the same methods as standard Nearmap Vertical content. This includes:

  • MapBrowser
  • Nearmap APIs
  • ArcGIS Online

Refer to the Nearmap Vertical page for more information, including accuracy specifications.

Identifying Post-Catastrophe Surveys

Post-catastrophe surveys are not currently ‘tagged’ or given a unique identifier. If you have a current ImpactResponse product included with your subscription, you will be notified via email when a new event has been captured and published. During the exclusive access period, the post-catastrophe survey will usually be the latest available survey for that survey area. 

If you are using the Tile API, it is possible to manually tag and filter post-catastrophe surveys. This can make it easier to work with imagery inside of applications such as QGIS, when you want to compare pre-catastrophe and post-catastrophe imagery.

Comparing Surveys

In MapBrowser, use the Split-View tool to compare imagery from two different survey dates. Note that some catastrophic events may occur outside of our standard coverage area, in which case, pre-catastrophe imagery will not be available.

If you are using the Tile API to view imagery in a third-party application such as QGIS, it is possible to bring in two different survey dates to compare. Learn how in this Post-Catastrophe and Tile API guide.

Measuring, Annotating and Exporting Post-Catastrophe Imagery

All Australian post-catastrophe surveys are orthogonal (Vertical) imagery, so you can measure, make annotations, and export post-cat imagery the same way you would with Vertical imagery. 

Learn more:




FAQs

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    How fast is post-catastrophe imagery captured after an event?

    We endeavour to capture as quickly as possible after an event, usually within days. There are several factors that affect the timing of a capture after a natural disaster event; at all times, the safety of our crew is paramount. We will not fly through or in adverse weather conditions (which includes thick smoke) or have our crew stay in areas where infrastructure has been disrupted.

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    Why does some post-catastrophe imagery contain cloud, smoke and other artefacts?

    In order to capture and publish post-catastrophe imagery as quickly as possible, we sometimes will have to fly in conditions that we would normally consider sub-optimal for our standard captures. This includes potentially flying under high cloud layers or at higher than usual altitudes due to emergency Air Traffic Control (ATC) restrictions.

  • Page:
    How does Nearmap decide which events to capture for Post-Catastrope surveys?

    Events are assessed based in criteria such as the scale of impact to communities, infrastructure, property, agriculture and industry and the geographical areas affected by the event. Decisions also consider whether an event is officially declared a disaster or emergency by federal and state government organisations and official industry bodies. 

  • Page:
    How will I know when new post-catastrophe imagery is available?

    If you have purchased the Nearmap ImpactResponse product as part of your subscription, you'll receive and email to let you know when an event has been captured, and another email to let you know when the imagery has been published, including a link to the relevant locations and survey dates.

    Notifications will be sent to the email address you use to log in to Nearmap.

  • Page:
    How does exclusive access work for the Australian Post-Catastrophe program?

    Customers who have purchased the Nearmap ImpactResponse product as part of their subscription will receive exclusive access for 30 days from the time the imagery is published.

    Once the 30 day embargo period has ended, the imagery is made available to all Nearmap customers with an Australian subscription.

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    How can I find post-catastrophe surveys in MapBrowser?

    Currently, post-catastrophe surveys are not uniquely tagged, so there is no way to search or identify these surveys in MapBrowser.

    If you have purchased the Nearmap ImpactResponse product as part of your subscription, you'll be notified by email when new imagery is available, including a link to the relevant locations and survey dates.

  • Page:
    What types of events are included in the Australian Post-Catastrophe program?

    Nearmap captures major natural disasters which have a significant impact on areas where customer interests are affected, such as bushfire, cyclone, hail, earthquake and flood events.

    Learn more about Post-Catastrophe event types.

  • Page:
    Is it possible to filter post-catastrophe surveys using Nearmap APIs?

    Currently, post-catastrophe surveys are not uniquely tagged, so there is no way to identify or filter on these surveys using Nearmap APIs.

    If you have purchased the Nearmap ImpactResponse product as part of your subscription, you'll receive an email to let you know when a new event has been captured, and another email to let you know when the imagery has been published including a link to the relevant survey locations and dates.

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    Does Nearmap AI also include post-catastrophe imagery?

    We run our standard Nearmap AI content stack on every Australian survey, including post-catastrophe surveys, and make the data available via standard delivery methods: AI Feature API, visualisation in MapBrowser, and AI Offline. We currently aim to publish AI data within a month of capture.

    Learn more about Nearmap AI.

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    What resolution is post-catastrophe imagery?

    The Australian post-catastrophe program is captured as high-resolution Vertical (orthogonal) imagery.

    Learn more about Nearmap Vertical imagery specifications.


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