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0–4,097 ft · OR🚗 Directions
Siuslaw National Forest and Oregon Dunes National Recreation Area along the central Oregon coast. Sitka spruce, Douglas fir, western hemlock, and shore pine on the coastal headlands; Oregon grape and salal understory. Mary\u2019s Peak (coast range high point), Cape Perpetua. Rich fall chanterelle (Pacific golden), hedgehog, matsutake, and cauliflower country; lobster mushrooms under spruce.
Updated Oct 11, 5:17 AM MT
Oregon Dunes rates Excellent: soil moisture has held at 0.24–0.25 VWC all week despite no rain in the last 7 days, and the moisture trigger is met with no drought. The high-confidence species are oyster, wavy cap, flying saucer, and the psilocybe group (Allen's, conifer, and Stuntz's blue legs), which are all fully satisfied at 45°F. Chanterelle, hedgehog, matsutake, king bolete, lobster, black trumpet, and the other moderate species are viable but marginal. Soil temperature is the only real drag, since 45°F sits below the 50–58°F minimums for most of them. Cauliflower is the weakest, with 0 of 7 days above its threshold, so don't plan a trip around it. Watch the soil temperature trend and the next rain event: a warm-up or a soaking would push the marginal species up, while continued dry days with falling temperatures will gradually erode that moisture buffer and shut the moderate species down first. Hot tip: Prioritize mossy, duff-rich conifer stands near the coast for matsutake and chanterelle, since they're the highest-value moderate species and matsutake has held its temperature minimum all 7 days.
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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Siuslaw 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.
0.00"
PRISM 4km · thru 10-09
Precip 14d
Observed precipitation from PRISM 4km gridded analysis, sampled at the region centroid through 2026-10-09. Used when no SNOTEL/SCAN station is mapped to this region.0.13"
PRISM 4km · thru 10-09
Soil Temp
45°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
soil temp marginal (45°F vs 55°F min, 5/7 days above), today 0.25 VWC, 7d avg 0.24 — moisture sustained
soil temp marginal (45°F vs 50°F min, 6/7 days above), today 0.25 VWC, 7d avg 0.24 — moisture sustained
soil temp marginal (45°F vs 55°F min, 5/7 days above), today 0.25 VWC, 7d avg 0.24 — moisture sustained
soil temp marginal (45°F vs 48°F min, 7/7 days above), today 0.25 VWC, 7d avg 0.24 — moisture sustained
soil temp marginal (45°F vs 58°F min, 0/7 days above), today 0.25 VWC, 7d avg 0.24 — moisture sustained
All conditions met (soil 45°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.24 — moisture sustained)
soil temp marginal (45°F vs 50°F min, 6/7 days above), today 0.25 VWC, 7d avg 0.24 — moisture sustained
soil temp marginal (45°F vs 55°F min, 5/7 days above), today 0.25 VWC, 7d avg 0.24 — moisture sustained
All conditions met (soil 45°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.24 — moisture sustained)
All conditions met (soil 45°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.24 — moisture sustained)
All conditions met (soil 45°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.24 — moisture sustained)
All conditions met (soil 45°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.24 — moisture sustained)
All conditions met (soil 45°F, sustained 7/7 days above threshold, today 0.25 VWC, 7d avg 0.24 — moisture sustained)
soil temp marginal (45°F vs 55°F min, 5/7 days above), today 0.25 VWC, 7d avg 0.24 — moisture sustained
soil temp marginal (45°F vs 50°F min, 6/7 days above), today 0.25 VWC, 7d avg 0.24 — 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.