1. Oct 10, 2026

    The Wettest Days and the Whitest Winters

    Two interactive maps of Minnesota for 2000 through 2025. One shows the 72 hours of each year when the most rain fell on the state, and the other the day of each winter when its snow water equivalent peaked.

    rainfallsnowMinnesotaextremesinteractive map

    Read the post

  2. Sep 2, 2026

    A Pair of Hiking Boots

    A sole coming apart in a river in Puerto Rico, and everything the boots had walked through since 2017.

    personaltravelBadlands

    Read the post

  3. Aug 21, 2026

    Mendenhall River GLOFs: Suicide Basin, the data, and Juneau's response

    A hazard that did not exist before 2011, four annual outburst floods in a row, and what the USGS and NWS records show about the 2026 event.

    GLOFHEC-HMSHEC-RAShydrologyAlaska

    Read the post

  4. Aug 2, 2026

    The story behind Rang

    How Persian art, and a silk carpet from Kashan in particular, became a set of color palettes I now use in engineering maps.

    colorvisualizationPersian art

    Read the post

Have a question a post should answer, or a topic you would like me to write about? Email me. See also the media page for interviews and press.