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500–1,200 ft · MO🚗 Directions
Rich bottomland hardwoods along the Missouri River corridor. Cottonwood, elm, and ash dominate floodplains. Dead and dying elms are morel magnets. Easy access from Columbia and Jefferson City. Morels emerge early here due to low elevation and river-warmed soils.
Updated May 29, 4:08 AM MT
# Missouri River Valley – S Tier | 29 May 2026 This is a clean spring flush window. Soil temps have hit the sweet spot (71.6°F), the valley just took 4 inches over two weeks, and sustained soil moisture is locked in at 0.27 VWC. You've got 28 species live right now across saprophytes, lignicolous polypores, and cup fungi—the full spectrum. The limiting factor is desiccation creeping in over the next 48–72 hours if we don't catch rain; evaporation at this soil temp accelerates fast in May. Priority hits: *Dryad's Saddle* (peak window closing), *Wine Cap* (still climbing), and anything in the cup fungi complex (*Green Elfcup, Black Cup*) before they desiccate. The polypores and jelly fungi are insurance plays—they'll hang through the dry spell. Watch the forecast; if a dry high-pressure system sets up, the fresh flushes crater by June 2nd. **Hot tip:** Scrape *King Alfred's Cakes* from charred wood now—they're at peak hydration and won't reconstitute as cleanly once the soil dries.
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
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Mark Twain National Forest
Mark Twain National Forest
⚠ 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.
0.47"
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.4.08"
PRISM 4km · thru 05-27
Soil Temp
72°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 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — moisture sustained)
All conditions met (soil 72°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.27 — 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.