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1,000–1,500 ft · IA🚗 Directions
Loess Hills along the Missouri River in Harrison, Monona, and Pottawattamie counties — windblown silt bluffs up to 200 feet tall, found at this scale only here and in China. Steep south-facing slopes hold goat prairie; north slopes hold bur oak, shagbark hickory, basswood, and ironwood. Morels in the ravine bottoms; chanterelles in protected oak draws. Preparation Canyon and Broken Kettle Grasslands for access.
Updated May 29, 4:17 AM MT
**Loess Hills - Tier A (May 29)** This region is firing on all cylinders: soil temps have climbed to 74°F, sustained moisture at 0.21 VWC averaged over seven days, and recent precipitation (2.8" in two weeks) has triggered a full flush window across 31 documented species. The diversity here is unusually broad—you're looking at prime conditions for everything from choice edibles (Dryad's Saddle, Wine Cap) to medicinals (Turkey Tail, Artist's Conk) to oddball specialties (Dune Stinkhorn, Lantern Stinkhorn). There's no limiting factor *right now*, but desiccation risk is flagged as elevated, meaning this window is time-bound. Watch the next 48–72 hours closely. Loess Hills terrain dries fast once soil temps stabilize above 70°F without fresh input, and your current 0.18 VWC is already trending toward the lower edge of the trigger band. A dry spell here collapses the season. **Hot tip:** Prioritize the Dryad's Saddle and half-free Morels *today*—they fruit hardest in the leading edge of warm-soil conditions and will peter out fastest once desiccation kicks in.
Generated by Claude (Anthropic) from the structured weather, soil, and phenology data on this page. The LLM can misread edge cases — treat this as a starting hypothesis, not a guarantee. Always verify conditions on the ground before committing to a long drive.
Precip 7d
Log your find on iNaturalist to help the community and get expert ID assistance. Photos, location, and habitat notes all help with identification.
⚠ Road Access Notice
Always verify road access is public before following GPS directions to mountain areas. Many forest roads are seasonal, gated, or require 4WD. Dispersed camping follows USFS/BLM rules (typically 14-day limit). Check ranger district offices for current road and campground conditions.
0.93"
PRISM 4km · thru 05-27
Precip 14d
Observed precipitation from PRISM 4km gridded analysis, sampled at the region centroid through 2026-05-27. Used when no SNOTEL/SCAN station is mapped to this region.2.80"
PRISM 4km · thru 05-27
Soil Temp
74°F
SWE
Snow Water Equivalent — how much water is in the snowpack vs. normal. Declining SWE means snowmelt is adding moisture to the soil.0%
Drought
None
Snowmelt
complete
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
All conditions met (soil 74°F, sustained 7/7 days above threshold, today 0.18 VWC, 7d avg 0.21 — moisture sustained)
Primordia readiness: Cold = mycelium dormant. Activating = soil warming, primordia building. Primed = 5+ sustained warm days at species threshold; fruiting imminent if moisture cooperates. Based on Schmidt 1983 / Mihail 2007.