Postholer - Hiking & GIS

Monitor water year and month-to-date precipitation as the winter unfolds on an interactive map. Updates daily. Will #ElNino impacts be hype or reality? Follow along: www.femafhz.com/map/37.72770... You can see intense tropical storm moisture impact in the image. #NCEP

Monitor water year and month-to-date precipitation as the winter unfolds on an interactive map. Updates daily. Will #ElNino impacts be hype or reality? Follow along: www.femafhz.com/map/37.72770... You can see intense tropical storm moisture impact in the image. #NCEP

Updated our land cover/fire recovery charts (added 2024/2025). Example, 2009 Station Fire 67% evergreen cover to 0%, with almost no recovery in 16 years, along linear feature #PacificCrestTrail. Grasses, then shrubs dominate: www.postholer.com/map/Pacific-... Available for 26 trails.

As of this morning, Oregon is scorching the way for wildfires this season (so far). Utah is a very distant second: #wildfires #oregon

The following creates a spatially indexed #flatgeobuf (FGB) of #USGSLandSat ARD #metadata by polygon. It accesses over 2.3 million rows (currently). 1982 to present. It is blazing fast and does not require an API or complex client stack. www.postholer.com/portfolio/no... #GIS

America First. The U.S. is the largest producer of oil in the world. So why are gas prices so high in the U.S.? Because energy companies honor their highly profitable foreign contracts before the needs of Americans. So, um, yeah. America First. Thanks Don.

Stay up-to-date with the latest #surfaceSmoke conditions and air quality with this interactive map. Updates hourly: www.femafhz.com/map/39.74098... #wildfire #smoke #airquality

Tropical storm Elida and sea surface temps: www.femafhz.com/map/27.91676... Change the layer to sea surface anomaly to visualize how temps are compared to normal. Sea surface temps are actually below normal for a large swath near the California coast. #tropicalStorm #hurricane #elnino

Create a median composite raster from Sentinel-2 using only #GDAL This tutorial achieves the same result as #spatialthoughts Python tutorial: courses.spatialthoughts.com/python-remot... ...using only GDAL and Bash, without Python and it's dependencies. www.postholer.com/portfolio/no...

Pssst! Hey extremists. Yeah, you. Whether you're red-hat-wearing MAGA traitor or a hamas loving Woke revolutionary, a message for you. Your vitriol directed toward Lindsey Graham says everything about you and nothing about the deceased.

You know it's true...

Creating multi-layer images with GDAL CLI pipeline, using various nested raster/vector pipelines. Data: ETOPO_2022 1KM resolution bathymetry/elevation, NaturalEarth and trail vector data. #gis

Our trail fires page is ready for the upcoming fire season. We've added video that shows smoke, hotspots, burn scars and fire weather index over the last 72 hours, in 1 hour increments. Choose your trail. www.postholer.com/trail-fires

More evidence against El Nino hype. Looking at the last 22 years, there's no evidence strong/moderate El Nino contributes to wetter weather. Only 2 of the top 10 years were moderate. 6 were Nina's!!! The opposite seems to be true in a changing climate.

Sierra Snow animation on May 28th, from 2004 to 2026. www.postholer.com

El Nino: Hazard or hype? Social media is awash with "weather wandas" seeking clicks, professing doom & gloom about El Nino. Here's a look over the years of its impact in California, in terms of precipitation.

967 distinct eco-regions from the @EPA for CONUS, levels 1-4. That's 5,842 at level 4. Base map turned off for clarity. Zoom in to increase eco-region level. Click for name: www.postholer.com/map/Pacific-...

It seems folks are struggling with @fema Flood Hazard (NFHL) data. Create your own spatial database, allowing you to query by FIRMID, FIPS, community id, date, geometry and retrieve data in bulk: postholer.com/portfolio/no... @cloudnativegeo.org @radiant.earth @briannaritapagan.bsky.social

Anyone notice a massive increase of bad internet traffic coming from South America over the last few months? Here's looking at you #Brazil: www.femafhz.com/map/-17.9518... #gis #osint

GDAL CLI version 3.12.0 is out! #gdal #gis #MtHood

Comparison of NBM QPF (precipitation) forecast model vs actual QPF amounts, for 2 events, Oct 24-27 and Nov 04-06 2025 along the California north coast. Consistency is an issue. @nws.noaa.gov #weather #california

National Risk Index, Riverine Flooding - Expected Annual Loss Rate - National Percentile shown. Choose category by state, county or census tract #polygons. www.femafhz.com/map/35.13787... #30DayMapChallenge

a century of glaciers melting 🧪🌐

Using PostGIS ST_LineInterpolatePoints to evenly get points from line features (roads) and ST_ClusterDBScan to get (mostly) non-overlapping points for road shields on interactive map. Using only st_clusterdbscan for non-overlaping GNIS place names. #30DayMapChallenge #points #postgis #leafletjs

Modern Python:

The authors say it's a sign that renewables can keep up the pace with the growing appetite for electricity worldwide.

State of California: 4th largest GDP in the *world*. 71% of the U.S. economy originates from blue states. Red states are being *subsidized* by blue states. What a complete embarrassment.

Stay tuned! Always current interactive map: femafhz.com/map/33.39475... #Invest94L

Hmmm....

A peculiar whale breaching in the Indian Ocean. ;) x.com/SpaceX/statu...

Hurricane #Erin at noon-ish, eastern. It's getting quite large. www.femafhz.com/map/31.24170...

California, the 4th largest economy in the world, has a balanced budget, *without a deficit*. Maybe the state isn't just a bunch of idiots after all? x.com/GovPressOffi...

Hurricane #Erin intensifies to category 5 in record time. www.femafhz.com/map/26.80446...

The northern 3rd of the #PacificCrestTrail is gonna see some significant rain. Get a current forecast and tread carefully! www.postholer.com/map/Pacific-...

My goto is to ask LLMs how many states have R in their name. They always fail. GPT 5 included Indiana, Illinois, and Texas in its list. It then asked me if I wanted an alphabetical highlighted map. Sure, why not.

Air quality over the U.S. right now is marginalized at best over CONUS. Here's a 'surface smoke' interactive map that updates hourly: www.femafhz.com/map/40.94671...

Our #livestream runs 24/7. But when the microfiche scanning team takes a well-earned break, the feed keeps rolling, with #lofi music accompanying home movies, silent films & other gems from the Internet Archive. Here's a sample. Tune in ➡️ www.youtube.com/live/aPg2V5R...

Since everyone is getting all worked up for no reason regarding a west-coast #tsunami, I'll post an image of Crescent City, CA tsunami evac zones. Being a CC resident, I'll predict this #earthquake will be a non-event. Click the 'evac zones' in the interactive map layers: www.delnorteresort.com

Sleeping bag temperature rating: An interactive map What 'season' bag do I need? This map shows 5 ranges: 1,2,3,4 season and extreme, for every month of the year. Here's the @pacificcresttrail.bsky.social for May: www.postholer.com/map/Pacific-... Available for anywhere in the lower 48 states.

Camp Mystic building footprints and their placement in FEMA flood zones. Kerr County flood data was last revised on Aug 4, 2022. The vast majority of buildings are in a 'High, Insurance Required' zone, the highest level. www.femafhz.com/map/30.00863...

Tropical storm Chantal @noaa.gov, and #FEMA National Risk Index Score, for hurricane, at state level (zoom in for county or tract). www.femafhz.com/map/38.77121...

Here are 2 must have links for Weather & Climate data: NOAA OneStop: data.noaa.gov/onestop/ NCEI Data Access: www.ncei.noaa.gov/access/searc... Government data being retired, moved, consolidated is a daily event. Much of it is finding a home above. #gischat #gis #weather #climate

Hey @nsidc.bsky.social, no data for the last 2 days in: noaadata.apps.nsidc.org/NOAA/G02158/... Thanks!

I reduced web traffic 80% by blocking #googleCloud from accessing my websites. Real user traffic is unaffected.

Viewshed of the entire #PacificCrestTrail. A viewshed is the unobstructed area you can see standing at a given location. A vista, you probably have expansive views. The bottom of a canyon, maybe not so much. www.youtube.com/watch?v=tmY2... There's one for the #JohnMuirTrail, too! #ParkChat

Each hex is keyed to the max Z value in US elevation it's over. I'm doing another on where they are given the average elevation value instead of max to see how it comes out. #arcgispro #b3d