What It Is
A generic wind-load screening value that translates the likely peak gust into an estimated pressure in pounds per square foot, then compares that value with broad threshold concepts drawn from Dr. Kim Coder's work.
Windward Tree case workspace
Geospatial evidence
Use an earlier date range to review weather and Storm Events associated with a suspected prior damage or loading episode. The primary incident date remains unchanged.
IEM is the Iowa Environmental Mesonet archive. Incident reconstruction includes 5-minute ASOS, routine METAR, and Special/SPECI reports. Report type is preserved for audit and selection.
Geocode the site to select nearby IEM ASOS stations across state boundaries, then pull weather around the incident.
| Station | Role | Distance | Elevation difference | Near-failure wind | Window peak | Window rainfall |
|---|
Station observation auditNo stored observation rows
| Valid | Station / elevation | Type | Wind | Gust | Dir | Rain |
|---|
Long-range wind context
Historical Storm Events
Official NOAA/NCEI high-wind and tornado reports preceding the incident.
Window: 2016-05-18 through 2026-05-18, preceding the case date.
NOAA/NCEI event auditNo matched records
| Date | Type | Speed | Direction | Location | Source |
|---|
Arboricultural assessment
Tree-failure screening
Screening facts are used to guide investigation and are not final causation, liability, legal, or insurance coverage conclusions.
Screening summary
Screening results classify support level and investigation priority, not final cause of failure.
Windward Tree should classify investigation priority and support level, not final cause of failure.
| Tree | Species | Failure | Defect | Exposure | Finding | Actions |
|---|
Weather tools
Pull localized IEM observations to replace sample values with station-backed wind and rainfall.
Weather data citations
Wind classification reference
Current case category is highlighted.
| Force | Category | Wind speed | Land / tree effects |
|---|
Scale ranges follow Beaufort force categories used by weather services. Use station metadata and site exposure to interpret tree effects.
Generic arboricultural screening
Current case pressure screen.
A generic wind-load screening value that translates the likely peak gust into an estimated pressure in pounds per square foot, then compares that value with broad threshold concepts drawn from Dr. Kim Coder's work.
T1 begins at about 56 mph and marks the point where crown drag reconfiguration is nearing exhaustion. T2 begins at about 96 mph and represents a more severe screening level where most-tree safety factors may be consumed.
Use it as context for whether wind loading was minor, notable, or near a general threshold. It should be read alongside station quality, exposure, defects, rooting conditions, rainfall, and observed failure mode.
It is not a tree-specific structural engineering calculation, proof of causation, or a substitute for field inspection. It does not directly model species, crown area, drag coefficient, shielding, decay, soil/root strength, load duration, or local turbulence.
This entire box is based on the published work of Dr. Kim Coder, including his tree storm wind-load threshold concepts. Treat it as a general screening aid, not a final engineering opinion.