MODIS Thermal (Last 48 hours)

This layer presents detectable thermal activity from MODIS satellites for the last 7 days. <a href='https://earthdata.nasa.gov/earth-observation-data/near-real-time/firms/active-fire-data' target='_blank' rel='nofollow ugc noopener noreferrer'>MODIS Global Fires</a> is a product of NASA’s <a href='https://earthdata.nasa.gov/about' target='_blank' rel='nofollow ugc noopener noreferrer'>Earth Observing System Data and Information System</a> (EOSDIS), part of NASA's <a href='https://science.nasa.gov/earth-science/earth-data/' target='_blank' rel='nofollow ugc noopener noreferrer'>Earth Science Data</a>.
EOSDIS integrates remote sensing and GIS technologies to deliver global
MODIS hotspot/fire locations to natural resource managers and other
stakeholders around the World.<br /><div><br /></div><div><div><p><b>Consumption Best Practices:</b> </p>

<ul><li>As a service that is subject to very high usage, ensure peak performance
and accessibility of your maps and apps by avoiding the use of
non-cacheable relative Date/Time field filters. To accommodate filtering
events by Date/Time, we suggest using the included &quot;Age&quot; fields that
maintain the number of days or hours since a record was created or last
modified, compared to the last service update. These queries fully
support the ability to cache a response, allowing common query results
to be efficiently provided to users in a high demand service
environment.</li><li>When ingesting this service in your applications, avoid using <a href='https://en.wikipedia.org/wiki/POST_(HTTP)' target='_blank' rel='nofollow ugc noopener noreferrer'>POST</a>
requests whenever possible. These requests can compromise performance
and scalability during periods of high usage because they too are not
cacheable.</li></ul></div></div><div><span style='font-weight:bold;'>Source: </span>NASA <a href='https://firms.modaps.eosdis.nasa.gov/active_fire/#firms-shapefile' target='_blank' rel='nofollow ugc noopener noreferrer'>FIRMS - Active Fire Data - for World</a></div><br /><div><span style='font-weight:bold;'>Scale/Resolution: </span>1km</div><br /><div><span style='font-weight:bold;'>Update Frequency: </span>1/2 Hour (every 30 minutes) using the <a href='https://www.esriurl.com/LiveFeed' target='_blank' rel='nofollow ugc noopener noreferrer'>Aggregated Live Feed Methodology</a></div><br /><span style='font-weight:bold;'>Area Covered: </span>World<br /><br /><font size='4'>What can I do with this layer?</font><br />The
MODIS thermal activity layer can be used to visualize and assess
wildfires worldwide. However, it should be noted that this dataset
contains many “false positives” (e.g., oil/natural gas wells or
volcanoes) since the satellite will detect any large thermal signal.<br /><font size='4'><br /></font><div><font size='4'>Additional Information</font></div><div>MODIS stands for <a href='https://earthdata.nasa.gov/earth-observation-data/near-real-time/download-nrt-data/modis-nrt' target='_blank' rel='nofollow ugc noopener noreferrer'>MODerate resolution Imaging Spectroradiometer</a>. The MODIS instrument is on board NASA’s Earth Observing System (EOS) <a href='https://terra.nasa.gov/' target='_blank' rel='nofollow ugc noopener noreferrer'>Terra (EOS AM)</a> and <a href='https://aqua.nasa.gov/' target='_blank' rel='nofollow ugc noopener noreferrer'>Aqua (EOS PM)</a>
satellites. The orbit of the Terra satellite goes from north to south
across the equator in the morning and Aqua passes south to north over
the equator in the afternoon resulting in global coverage every 1 to 2
days. The EOS satellites have a ±55 degree scanning pattern and orbit at
705 km with a 2,330 km swath width.</div><br />It takes approximately 2 – 4 hours after satellite overpass for MODIS Rapid Response to process the data, and for the <a href='https://earthdata.nasa.gov/earth-observation-data/near-real-time/firms' target='_blank' rel='nofollow ugc noopener noreferrer'>Fire Information for Resource Management System</a>
(FIRMS) to update the website. Occasionally, hardware errors can result in processing delays beyond the 2-4 hour range. Additional
information on the MODIS system status can be found at <a href='https://earthdata.nasa.gov/earth-observation-data/near-real-time/rapid-response' target='_blank' rel='nofollow ugc noopener noreferrer'>MODIS Rapid Response</a>.<br /><br /><font size='4'>Attribute Information</font><br /><ul><li><span style='font-style:italic;'>Latitude and Longitude</span>:
The center point location of the 1km (approx.) pixel flagged as
containing one or more fires/hotspots (fire size is not 1km, but
variable). Stored by Point Geometry. See <a href='https://earthdata.nasa.gov/faq/firms-faq#ed-modis-fire-onground' target='_blank' rel='nofollow ugc noopener noreferrer'>What does a hotspot/fire detection mean on the ground?</a></li><li><span style='font-style:italic;'><a href='https://earthdata.nasa.gov/faq/firms-faq#ed-modis-brightness' target='_blank' rel='nofollow ugc noopener noreferrer'>Brightness</a></span>: The brightness temperature measured (in Kelvin) using the MODIS channels 21/22 and channel 31.</li><li><span style='font-style:italic;'><a href='https://earthdata.nasa.gov/faq/firms-faq#ed-modis-scan-track' target='_blank' rel='nofollow ugc noopener noreferrer'>Scan and Track</a></span>:
The actual spatial resolution of the scanned pixel. Although the
algorithm works at 1km resolution, the MODIS pixels get bigger toward
the edge of the scan. See <a href='https://earthdata.nasa.gov/faq/firms-faq#ed-modis-scan-track' target='_blank' rel='nofollow ugc noopener noreferrer'>What does scan and track mean?</a></li><li><span style='font-style:italic;'>Date and Time</span>:
Acquisition date of the hotspot/active fire pixel and time of satellite
overpass in UTC (client presentation in local time). Stored by
Acquisition Date.<br /></li><li><span style='font-style:italic;'>Acquisition Date</span>: Derived Date/Time field combining Date and Time attributes.</li><li><span style='font-style:italic;'><a href='https://earthdata.nasa.gov/faq/firms-faq#ed-modis-missing' target='_blank' rel='nofollow ugc noopener noreferrer'>Satellite</a></span>: Whether the detection was picked up by the Terra or Aqua satellite.</li><li><span style='font-style:italic;'><a href='https://earthdata.nasa.gov/faq/firms-faq#ed-confidence' target='_blank' rel='nofollow ugc noopener noreferrer'>Confidence</a></span>: The detection confidence is a quality flag of the individual hotspot/active fire pixel.</li><li><span style='font-style:italic;'>Version</span>: Version refers to the processing collection and source of data. The number before the decimal refers to the <a href='https://earthdata.nasa.gov/faq/firms-faq#ed-modis-collections' target='_blank' rel='nofollow ugc noopener noreferrer'>collection</a> (e.g. MODIS <a href='https://earthdata.nasa.gov/what-is-new-collection-6-modis-active-fire-data' target='_blank' rel='nofollow ugc noopener noreferrer'>Collection 6</a>). The number after the decimal indicates the source of Level 1B data; data processed in near-real time by <a href='https://earthdata.nasa.gov/earth-observation-data/near-real-time/rapid-response' target='_blank' rel='nofollow ugc noopener noreferrer'>MODIS Rapid Response</a>
will have the source code “CollectionNumber.0”. Data sourced from
MODAPS (with a 2-month lag) and processed by FIRMS using the standard
MOD14/MYD14 Thermal Anomalies algorith<span style='color:rgb(105, 105, 105);'></span>m
will have a source code “CollectionNumber.x”. For example, data with
the version listed as 5.0 is collection 5, processed by MRR, data with
the version listed as 5.1 is collection 5 data processed by FIRMS using
Level 1B data from MODAPS.</li><li><span style='font-style:italic;'>Bright.T31</span>: Channel 31 brightness tempera<span style='color:rgb(128, 128, 128);'></span>ture (in Kelvins) of the hotspot/active fire pixel.</li><li><span style='font-style:italic;'>FRP</span>:
Fire Radiative Power. Depicts the pixel-integrated fire radiative power
in MW (MegaWatts). FRP provides information on the measured radiant
heat output of detected fires. The amount of radiant heat energy
liberated per unit time (the Fire Radiative Power) is thought to be
related to the rate at which fuel is being consumed (Wooster et. al.
(2005)).</li><li><span style='font-style:italic;'><a href='https://www.earthdata.nasa.gov/faq/firms-faq#ed-nrt-standard' target='_blank' rel='nofollow ugc noopener noreferrer'>DayNight</a></span>: The standard processing algorithm uses the solar zenith angle (SZA) to
threshold the day/night value; if the SZA exceeds 85 degrees it is
assigned a night value. SZA values less than 85 degrees are assigned a
day time value. For the NRT algorithm the day/night flag is assigned by
ascending (day) vs descending (night) observation. It is expected that
the NRT assignment of the day/night flag will be amended to be
consistent with the standard processing.</li><li><span style='font-style:italic;'>Hours Old</span>:
Derived field that provides age of record in hours between Acquisition
date/time and latest update date/time. 0 = less than 1 hour ago, 1 = less than 2 hours ago, 2 = less than 3 hours ago,
and so on.</li></ul><div><font size='5'>Revisions</font></div><div><ul><li><span style='font-weight:bold;'>June 22, 2022</span>:
Added 'HOURS_OLD' field to enhance Filtering data.
Added 'Last 7 days' Layer to extend data to match time range of <a href='https://www.arcgis.com/home/item.html?id=dece90af1a0242dcbf0ca36d30276aa3' target='_blank' rel='nofollow ugc noopener noreferrer'>VIIRS</a> offering. Added Field level descriptions.<br /></li></ul></div><span style='color:rgb(128, 128, 128);'><span style='background-color:rgb(255, 255, 255);'>This map is provided for informational purposes and is not monitored 24/7 for accuracy and currency.</span></span><div><br /></div>If you would like to be alerted to potential issues or simply see when this Service will update next, please visit our <a href='https://livingatlas.arcgis.com/livefeeds-status/' target='_blank' rel='nofollow ugc noopener noreferrer'>Live Feed Status</a> Page!