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About MappingSupport

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    Redmond, WA 98053

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  1. MappingSupport

    Rant N' Rave (Banter) Thread

    You may have heard that Seattle got some snow. This guy's comments nails it. If you read this twitter thread at work your co-workers will be wondering what you are laughing at.
  2. I have lived near Redmond WA (Seattle suburb) for close to 30 years. The snow storm was forecast well in advance and something new happened this time. There was frenzied buying of food. All across the area many stores were out of milk/bread/eggs. Looong checkout lines. It was the same thing you people see on the east coast with a hurricane bearing down. It is almost as though there was an element of mass self-hypnosis going on. We live at 250 ft elevation and this morning there is maybe 10" on our deck. Of course a person's view of snow is seen though the perspective of where they grew up - so says the guy from Minnesota. Below is a GISsurfer map that shows one of the NOAA radar layers. Here is the description of this data layer: I discovered that this radar data does a remarkably good job of showing where it is snowing and how hard. I can 'ground truth' the data by looking out my window. Open the map:,-122.064375&zoom=9&basemap=USA_basemap&overlay=USA_weather_radar,ESRI_roads_and_labels,County&txtfile=
  3. Use this interactive map to see temperature and wind chill readings each hour at RAWS stations. Click any blue square and follow the link. Need help? Please click "Map tips" in the upper left corner. The "Rain gage" layer also has temperature data. Open GISsurfer map:,-90.302150&zoom=7&basemap=ESRI_aerial_firefly&overlay=ESRI_roads_and_labels,RAWS_weather_station&txtfile= The last year I lived in Minnesota the temperature swing was 143 degrees (-38 to 105). Way too much for my delicate sensibilities. So I bid all a ‘happy winter’ from the tropics of Puget Sound where the snow stays in the mountains as God intended and the forecast today is sun and mid 50s.
  4. Here is a GISsurfer map with 20+ weather related overlays with data from government GIS servers. You can turn on/off and restack the layers. The 'top' layer is clickable and will display all the attribute data the GIS server has for the thing that you clicked. The attribute data for some layers (RAWS, Forecast discussion, etc) includes a link that leads to more data. Don't know what 'top' means? Need help? Please click "Map tips" in the upper left corner. Open map:,-83.687641&zoom=5&basemap=USA_basemap&overlay=Weather_watch_warning,USA_weather_radar,State_boundary&txtfile=
  5. MappingSupport

    [Eastern US] Dec. 2018: Consolidated Discussion / Obs

    The top layer on this map is the NWS forecast discussion for the various zones. Click a zone and follow the link to the details. If you have not seen this type of map before and need a bit of help, please click "Map tips" in the upper left corner. Open the map:,-89.182878&zoom=5&basemap=USA_basemap&overlay=Weather_watch_warning,Forecast_discussion&txtfile=
  6. MappingSupport

    The Banter Thread

    Here is the poor man's source for within-the-hour data from the RAWS weather stations. 1. Open the map 2. Click a permanent RAWS station (aqua square) 3. Follow the data link 4. Scroll down Map link:,-82.450365&zoom=6&basemap=USA_basemap&overlay=Weather_watch_warning,RAWS_weather_station&txtfile=
  7. Here is a pig poop map for Hurricane Florence. Each pig symbol represents a manure lagoon. If you zoom in then you will see the detailed USGS topo map plus an overlay layer that shows all the small swales and drainage ways that flow past the lagoons. The stream gage layer is “on top” and therefore clickable. If you click a gage and then follow the link you will see the detailed NOAA data for that gage. None of the rivers have crested yet. The manure lagoons and drainage ways are easy to see on the aerial basemaps if you zoom in. I like the aerial basemap “ESRI aerial firefly”. Open GISsurfer map:,-77.854614&zoom=8&basemap=ESRI_scanned_topo_USA&overlay=NC_pig_manure_lagoon,ESRI_roads_and_labels,Lakes_rivers_streams,Stream_gage&txtfile=
  8. I literally did a double-take since I thought I was reading the scale wrong. Turns out I am reading it correctly. NOAA forecasts the Cape Fear River at Fayetteville to go from 12.58 feet (present level) to 62.4 feet. Yikes! See my prior post for an online map that gives you access to stream gage data.
  9. Stream gage at Wilmington is about to set a record. If you open the map, click any gage (red=highest) and follow the link, then you will see the official NOAA data page for that gage. Each time you open the map you will see the most recent data (i.e. updated gage colors) from NOAA’s ArcGIS server. Open online map:,-78.288574&zoom=7&overlay=Stream_gage&txtfile=
  10. As promised, the link below will open an online map that can display various overlays of data that are hosted on government GIS servers. A number of the overlays display stations that record weather-related data. You can click most of those stations and see a link that leads to the data collected by that station. Only the top overlay is clickable. Don’t know what that means? Please take a moment and read the “Map tips”. That link is in the upper left corner. Always happy to answer questions but I was up super early this morning and am going to lay down for bit. 33andrain gets a scoop since this is my first post launching GISsurfer v1.0 - the replacement for Gmap4. Audios Google. Open GISsurfer online map:,-76.909790&zoom=7&overlay=Storm_surge_flood,Bouy_and_more&txtfile=
  11. Busy day of coding today. Tomorrow I will post a web map with various clickable GIS overlays that will take you to data for bouys, weather stations of various sorts, stream gages, etc. This will be GISsurfer v1.0. For those that saw any of the Gmap4 maps I posted in prior years - good news - the GISsurfer interface is the same.
  12. Still here, but.... The Gmap4 online maps I have posted in the past were all based on the Google map API (Application program Interface). This past spring Google slashed the amount of free API usage they allowed. It would have cost me $1,000+/month to continue Gmap4 and as a result I have shut Gmap4 down except for a few narrow use cases not relevant here. Currently I am building GISsurfer which will be a replacement for Gmap4. GISsurfer is based on the free open-source Leaflet map API. Most of the Gmap4 features will be replicated in GISsurfer. Version 1.0 should launch later this month. That version will include the ability to display data that is hosted on GIS servers. That is the feature I used for the Gmap4 maps I used to post here. So , yes, I will be back with online maps that display GIS data - just not quite yet. GISsurfer news will get posted to: Twitter: Facebook:
  13. MappingSupport

    March 20-22 Winter Storm Threat Part I

    Here is a Google + GIS map that shows the watches and warnings plus the zones for the NWS forecast discussion. If you click the map and follow the link, then you can read the forecast discussion for the zone that you clicked. To read the watch/warning announcement, first turn off the forecast discussion layer and then click any color and follow the link. Need help? Please click “Map tips” in the upper left corner. Map link:,-77.102051&z=6&t=m,Weather_watch_warning,Forecast_discussion&q=
  14. MappingSupport

    Winter 2017-2018 -- The Grand Finale -- Part 3

    Here is a snip from this NWS page: ...BLIZZARD WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 8 PM EDT TUESDAY... * WHAT...Blizzard conditions expected. Winds gusting as high as 65 mph will cause whiteout conditions in blowing snow. Significant drifting of the snow is likely. Total snow accumulations of 12 to 18 inches, with localized amounts around 20 inches, are expected. * WHERE...Coastal Essex County, Plymouth County, Cape Cod and Martha`s Vineyard. * WHEN...From 11 PM this evening to 8 PM EDT Tuesday. * ADDITIONAL DETAILS...Travel will be very dangerous with 1 to 3 inch per hour snowfall rates at times. This will significantly impact the morning commute. The Tuesday afternoon commute is also expected to be impacted. Wet snow and strong winds will result in some power outages and tree damage.
  15. MappingSupport

    March 13, 2018 -- Forecast Trends / Observations

    NWS has hoisted the winter storm warning. For the details, click the map and follow the link. Map link:,-73.564453&z=5&t=m,Weather_watch_warning&q=