1/4 If you zoom out any of the fire maps I post then you will always see all the current satellite hotspot data. That data is automatically updated several times per day. MODIS = red triangle. VIIRS = orange square.

Open #GISsurfer map: bit.ly/3h8oKCF Image
2/4 Caution! Satellite hotspot data is *always* several hours old when you see it on a map and locations are approximate. Never rely on any map to ignore an order to evacuate!
3/4 To make your own custom map link, zoom in on an area or click Menu ==> Search. Turn on the overlay layers you want. Then click Menu ==> Link to this map. The link you see will replicate the map on your screen.
4/4 To learn how to turn other overlay layers on/off, to find out the importance of the ‘top’ layer and otherwise get the most benefit from the map, please read the “Map tips”. That link is in the upper left corner of each map.

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More from @MappingSupport

18 Oct
1/7 This tweet thread describes the authoritative USA county-level *daily count* COVID-19 data that is hosted on my server and which can be used by anyone for any non-commercial purpose. #COVID19 #COVID #CovidData
2/7 #JohnsHopkinsUniversity is widely regarded as one of the primary sources for authoritative COVID-19 data. Hopkins curates this data from various sources and hosts it on GitHub at
github.com/CSSEGISandData…
3/7 The #JohnsHopkins “timeseries” data is a *cumulative count* of cases and deaths. My code automatically runs each night and converts those cumulative counts into *daily counts*. I am hosting this daily count data in separate csv files per month.
Read 8 tweets
17 Oct
1/14 I have been volunteering to produce online wildland fire maps for about the last 10 years. This is a multi-part tweet to help people understand satellite hotspot data for wildland fires.
2/14 The #1 thing to know is that any fire data you see on maps is **not real time**. After a satellite pass it takes NASA ~3 hours to process the raw data before it can be displayed on any map.
3/14 Since data you see via an online map is **not real time**, never rely on any map (or anything else) to ignore an order to evacuate. The professionals that make decisions which areas must evacuate have more information than is available to you.
Read 15 tweets
28 Sep
1/6 I’ve been volunteering to produce online wildland fire maps for about the last 10 years. The #1 thing to know is that any fire data you see on maps is **not real time**. There are 2 MODIS satellites and 2 VIIRS satellites. #GlassFire #GlassIncident #ZoggFire
2/6 The MODIS/VIIRS satellites make a total of 8 passes per 24 hours. For the West Coast very rough timing is midnight to 3am (4 passes) and noon to 3pm (4 passes). It takes NASA ~3 hours to process the raw data before it can be displayed on any map.
3/6 Usually by 7am pacific time the maps are showing all the MODIS/VIIRS data that is available until sometime after 3pm. Hotspot locations are approximate and sometimes the data is ‘false positive’.
Read 6 tweets
22 Aug
1/9 Here is a tip that can save a life (yours?) in an emergency. When you call 911 they might not know where you are unless you tell them. I developed #FindMeSAR as a public service project to help solve this problem. #SearchAndRescue #EmergencyManagement Image
2/9 #FindMeSAR (findmesar.com) is a webpage that uses the GPS in your phone to display your coordinates and accuracy value. Several coordinate formats are supported and each one has a different colored screen.
3/9 The yellow screen displays your location in latitude longitude, decimal degrees. This format is used by all 911 call centers.
Read 10 tweets
18 Aug
1/9 What happens if the #ElectoralCollege vote is a tie? Here is a website that lists 64 different ways that could happen:
270towin.com/electoral-coll…

If there is a tie then we might wind up with President Biden and Trump’s running mate as Vice President.
2/9 In case of #ElectoralCollege tie the 12th Amendment says the House elects the President with each state getting *one* vote and the Senate elects the Vice President with all 100 Senators voting. Link to 12th amendment:
constitution.findlaw.com/amendment12.ht…
3/9 Since a majority of Senators are Rs the senate would quickly vote in favor of Trump’s running mate to be Vice President. Boom! That’s a done deal.
Read 9 tweets
2 Aug
1/6 Here is one of my public service projects that might help to save a life. #FindMeSAR (findmesar.com) is a webpage that uses the GPS in your phone to display your coordinates and accuracy value. #SearchAndRescue #Hiking #10Essential Image
2/6 Several coordinate formats are supported and each has a different colored screen. The yellow screen displays your location in latitude longitude, decimal degrees. This format is used by all 911 call centers.
3/6 When you open FindMeSAR the first time your phone has to be online. The code for this webpage is saved in a special part of the browser's memory and this webpage will then work offline. (Service worker + AppCache)
Read 6 tweets

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