Interactive map with a dark grey line showing the perimeter of the area burned early this year by the #PalisadesFire. The yellow/gold/red colors show drainage basins with a low/moderate/high risk of debris flow if there is lots of rain in a fairly short time period. The black dots mark the outlets of drainage areas.

You can drag the map over to the area burned by the #EatonFire
#AtmosphericRiver #DebrisFlow #CAwx

Open GISsurfer map:
https://mappingsupport.com/p2/gissurfer.php?center=34.071282,-118.600159&zoom=12&basemap=USA_basemap&overlay=State_boundary,Basin_Combined_Hazard,Lake_river_stream,Basin_Outlets,Fire_Perimeters&data=https://mappingsupport.com/p2/special_maps/disaster/USA_weather.txt||overlay^name=Fire_Perimeters^url=https://earthquake.usgs.gov/arcgis/rest/services/ls/pwfdf/MapServer^layers=9||overlay^name=Basin_Combined_Hazard^url=https://earthquake.usgs.gov/arcgis/rest/services/ls/pwfdf/MapServer^layers=4^opacity=0.5||overlay^name=Basin_Outlets^url=https://earthquake.usgs.gov/arcgis/rest/services/ls/pwfdf/MapServer^layers=3

Southern California braces for weekend of severe weather

Southern California will be under a severe weather threat Saturday, with the most powerful wave of an incoming…
#NewsBeep #News #Headlines #area #Debrisflow #hour #inch #l.a. #latethursday #rain #rate #ryankittell #saturday #SEVEREWEATHER #southerncalifornia #storm #tree #UnitedStates #Us #USA #weekend
https://www.newsbeep.com/250076/

Atmospheric river storm slams into SoCal: How bad will it get?

An atmospheric river hit Los Angeles in the early hours of Tuesday, bringing scattered downpours, powerful winds, fears…
#NewsBeep #News #Headlines #atmosphericriverstorm #burnscar #County #Debrisflow #door #evacuationwarning #highrisk #inch #mondayevening #nationalweatherservice #palisadesfire #resident #southerncalifornia #Tuesdaymorning #UnitedStates #Us #USA #wintrystorm
https://www.newsbeep.com/185185/

Deep-Learning-Based Object Detection And Tracking Of Debris Flows In 3D Through Lidar-Camera Fusion
--
https://doi.org/10.1109/TGRS.2025.3609573 <-- shared paper
--
[As an engineering geologist, I have been fortunate enough (sic) to see debris flows in action (indeed, I was rerouted on the motorcycle because of them) on the Poudre Canyon Road in Colorado, after the 2020 Cameron Peak Fire]
#GIS #spatial #mapping #debrisflow #geology #engineeringgeology #geology #massmovement #postfire #wildfire #water #sediment #hydrology #extremeweather #model #modeling #AI #deepleaning #algorithms #objectdection #monitoring #remotesensing #LiDAR #pointcloud #landform #geomorphometry #video #massmovement #risk #hazard #assessment #damage #infrastructure #rock #boulder #cost #economics #realtime #3D #wave #flow #dynamics

Landsliding Follows Signatures Of Wildfire History And Vegetation Regrowth In A Steep Coastal Shrubland
--
https://www.linkedin.com/posts/tmatthew_the-geoscience-community-is-finding-more-activity-7365791741355950080-VzES <-- shared LinkedIn post
--
https://pubs.geoscienceworld.org/gsa/geosphere/article/doi/10.1130/GES02856.1/660392/Landsliding-follows-signatures-of-wildfire-history <-- shared paper
---
#GIS #spatial #mapping #massmovement #debrisflow #debrisslide #California #USA #climatechange #extremeweather #fire #engineeringgeology #risk #hazard #geoscience #water #hydrology #rainfall #precipitation #wildfire #postwildfire #landslide #vegetation #cover #type #causality #coast #coastal #shrubland #model #modeling #atmosphericriver #storm #geomorphology #geomorphometry #SantaYnezMountains #imagery #remotesensing #delineation #downslope #sediment #damage #cost #economics #infrastructure #geology #regrowth #postfire
U.S. Geological Survey (USGS) USDA Forest Service California Geological Survey

New Research Aims To Better Predict And Understand Cascading Land Surface Hazards
--
https://phys.org/news/2025-06-aims-cascading-surface-hazards.html <-- shared technical article
--
https://doi.org/10.1126/science.adp9559 <-- shared paper
--
#interconnected #geology #engineeringgeology #landcover #landsurface #GIS #spatial #mapping #landcover #hydrology #water #geomorphology # geomiorphmetry #risk #hazard #extremeweather #climatechange #cascading #cascadinghazards #debrisflow #wildfire #massmovement #landslides #flood #flooding #mudflow #susceptibility #chainreaction #spatialanalysis #spatiotemporal #prediction #management #planning #mitigation #multifactor #sediment #erosion #fluvial #earthquake #fault #faulting #hazardassessment #riskassessment #volcano #vulcanism #sealevelchange #cryosphere #ice #snow #GLOF #humanimpacts #urban #infrastructure #cost #economics #loss #damage #earthobservation #remotesensing #LiDAR #UAV

Vulnerability Of California Roadways To Post-Wildfire Debris Flows
--
https://doi.org/10.1088/2634-4505/acb3f5 <-- shared paper
--
#GIS #spatial #mapping #California #geology #engineeringgeology #geomorphology #risk #hazard #water #hydrology #massmovement #landslide #debrisflow #roadway #road #highway #CalTrans #infrastructure #cost #damage #economics #fire #wildfire #postwildfire #transportation #watersheds #climatechange #extremeweather #rainfall #precipitation #naturalhazards #vegetation #spatialanalysis #vulnerability #assessment #soil

Mobile Radar Provides Insights Into Hydrologic Responses In Burn Areas
--
https://doi.org/10.1071/WF24163 <-- shared paper
--
#GIS #spatial #mapping #remotesensing #radar #water #hydrology #engineeringgeology #risk #hazard #massmovement #landslide #debrisflow #mobileobservatory #postfire #rainfall #precipitation #estimation #RockyMountains #streamradar #weatherradar #extremeweather # metrology #wildfire #fire #impacts #monitoring #hydrometeorological #instrumentation #burnarea #burnt #soil #basin #runoff #spatialanalysis #spatiotemporal #remoteareas #planning #management #mitigation

Quantifying The Compounding Effects Of Natural Hazard Events - A Case Study On Wildfires And Floods In California
--
https://doi.org/10.1038/s44304-025-00090-7 <-- shared paper
--
#GIS #spatial #mapping #spatialanalysis #spatiotemporal #casestudy #California #wildfire #fire #flood #flooding #climatechange #weather #extremeweather #risk #hazard #debrisflow #massmovement #impacts #damage #infrastructure #cost #economics #quantification #compoundinghazards #compound #compounding #framework #naturalhazard #naturaldisaster #recovery #temporal #regional #planning #policy #management #mitigation #geology #soils #engineeringgeology #geomorphology #resilience #preparation

Assessment Of Western Oregon Debris-Flow Hazards In Burned And Unburned Environments
--
https://doi.org/10.1002/esp.70045 <-- shared paper
--
[with more and more catastrophic wildfires, the engineering geology awareness and possible mapping of post-fire debris flow risk is important]
#GIS #spatial #mapping #wildfire #fire #oregon #risk #hazard #geology #geomorphology #risk #hazard #landslide #massmovement #landslide #postfire #soil #spatialanalysis #spatiotemporal #engineeringgeology #extremeweather #naturaldisaster #debrisflow #mechasisms #property #infrastrure #publicsafety #lossoflife #model #modeling #calibration #water #hydrology #inventory #hazardassessment #geomorphometry

Systemic Drivers of Electric-Grid-Caused Catastrophic Wildfires - Implications for Resilience in the United States
--
https://doi.org/10.3390/challe16010013 <-- shared paper
--
#wildfire #electricgrid #ignitioncauses #wildfireprevention #mapping #spatial #spatialanalysis #risk #hazard #fire #wildfire #climatechange #Anthropocene #humanimpacts #infrastructure #massmovement #debrisflow #engineeringgeology #denudation #environment #ecosystems #ecology #loss #cost #economics #residential #waterquality #water #hydrology #electricty #energy #LahainaFire #CampFire #MarshallFire #SmokehouseCreek #fires #bushfire #vegetation #wind #weather #landuse #humanimpacts #utilitycompanies #utilities #resiliency

LAFD has info and maps for the various #Evacuation warnings they've issued for the coming rains and #DebrisFlow risks.

They've sent deputies into the field because while there are warnings for general areas, specific addresses will have mandatory evacuation orders. This is pretty smart really, and deputies can inform non-ordered addresses of risks, so educational.

https://lafd.org/news/evacuation-warnings-march-1213-due-high-mudslidedebris-flow-risk

Due to the forecasted high rains which have the potential to trigger mudslides and debris flows on March 12-13, the City of Los Angeles is issuing EVACUATION WARNINGS for several areas and limited, address specific Evacuation Orders which will go into effect from 7AM Wednesday (3/12/2025) to 6pm Thursday (3/13/2025)

#BridgeFire #MtBaldy #Glendora
#Mud #DebrisFlow #Risk

From: @easwatch
https://m.ai6yr.org/@easwatch/114145565564729814

#Mud #DebrisFlow

#PalisadesFire #FranklinFire #Topanga #Malibu #SunsetMesa

From: @easwatch
https://m.ai6yr.org/@easwatch/114145561901481395

Seismometers Reveal Earth's Longest-Runout Undersea Sediment Flows In Unprecedented Detail
--
https://phys.org/news/2025-02-seismometers-reveal-earth-longest-runout.html <-- shared technical article
--
https://doi.org/10.1038/s43247-025-02137-z <-- shared paper
--
https://doi.org/10.1016/j.geomorph.2024.109350 <-- shared paper
--
https://doi.org/10.1038/s41561-022-01017-x <-- shared paper
--
#GIS #spatial #mapping #remotesensing #Congo #CongoChannel #bathymetry #seismometers #monitoring #sediment #flow #submarine #massmovement #canyon #infrastructure #pipes #cables #engineeringgeology #geology #model #current #debrisflow #bathymetric #Africa #offshore #coast #coastal #river #WestAfrica #instrumentation #acoustic #doppler #moorings #turbidity #thalweg #morphology #landslides #stratigraphy #seismic #turbiditycurrent #flow #gradient #slope #erosion #risk #hazard #spatialanalysis #spatiotemporal #seabed

Grfin Tools—User Guide And Methods For Modeling Landslide Runout And Debris-Flow Growth And Inundation
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https://pubs.usgs.gov/publication/tm14A3 <-- shared USGS publication
--
https://code.usgs.gov/grfintools/grfintools <-- shared USGS software release
--
H/T Jonathan Perkins USGS
[ another open source resource for everyone from the USGS ~smile~ ]
#GIS #spatial #mapping #opensource #openlibrary #Grfin #software #package #regional #debrisflow #engineeringgeology #geology #inundation #spatialanalysis #spatiotemporal #geophysics #geophysical #massmovement #landslide #lahar #volcano #rock #avalanche #model #modeling #statistical #geostatistics #water #hydrology #downstream #elevation #remotesensing #DEM #flow #runout #risk #hazard #tools #slope #erosion #drainage #network #channel #channelisation #userguide
@USGS

Cities turn into torrents of debris flows after bushfires and rain
All that is solid melts into air...
>>
https://www.sciencenews.org/article/danger-after-la-fires-debris-flows
#FossilFuels #petrotopia #climate #infrastructure #fires #erosion #soil #sprawl #DebrisFlow

Flash Flood Warning issued February 13 at 5:30PM PST until February 13 at 8:00PM PST by NWS Los Angeles/Oxnard CA


At 530 PM PST, local law enforcement reported dangerous debris flows in Altadena as a result of extremely heavy rainfall that is moving over the area. THIS IS A VERY DANGEROUS SITUATION!

HAZARD...Life threatening debris flows in and around the Eaton
Burn Scar.

SOURCE...Law enforcement reported.

IMPACT...Mud, rock, and debris flows are impacting drainages,
roads, and residences in and directly below the burn
area.

#EatonFire #DebrisFlow #CAwx #Altadena

Info on #DebrisFlow cameras. Snipped from FB. #AtmosphericRiver #CAwx

"Update: all seven new cameras are now online
With a major atmospheric river projected to hit Southern California this week, ALERTCalifornia's field team has been working hard to install seven new cameras around Los Angeles to help emergency managers monitor potential debris flows from the Eaton and Palisades burn scars. The Bailey Canyon 1 & 2, Sierra Madre Canyon 1 & 2, and Sierra Madre Bridge cameras are already online for the the Eaton Fire scar. Cloudcroft 1 & 2 cameras will be online soon for the Palisades Fire scar. Search camera names at cameras.alertcalifornia.org to see their locations."

AlertLACounty: Emergency message from LASD: 02/12/25 6:10pm: Deputies are in the field notifying residents of local mud/debris flow risk from PALISADES AND FRANKLIN FIRE burn scars. PARTS OF MALIBU, TOPANGA AND ALL OF SUNSET MESA are under EVACUATION WARNING until at least 2/14/25 2pm due to risk to of losing access. PREPARE NOW. More info at alertla.org. #wildfires #PalisadesFire #FranklinFire #flooding #debrisflow #warning