As of August 20, 2026, your apiary is in solid late-summer shape overall — Hive #2 and Hive #3 remain textbook-healthy with tight brood clamping and perfectly stable acoustics, while Hive #1's gradual cooling trend has now leveled off this week and its acoustics remain a near-perfect baseline match; Iris continues her multi-week cooling drift but with fully intact, acoustically confirmed population, consistent with an August brood contraction or laying pause worth a brood-frame check on your next routine visit.
Across Hive #2 and Hive #3, a robust deconfounded coupling between in-hive temperature, humidity, and gas resistance (r=+0.77–0.83 and r=+0.53–0.60 respectively) reflects the thermodynamic link between active brood heating, evaporative moisture management, and honey-ripening VOC output — a multi-channel signature of peak late-summer store-curing activity documented by Seeley 1974 and Human et al. 2006.
All four hives show clear daily fanning and activity rhythms against an outdoor swing of 67.5–94.6°F (19.7–34.8°C) at a very dry 15.7–45.0% RH, with a rising barometric tendency (+1.74 hPa/3h) signaling clearing conditions favorable for good late-August foraging; Hive #2 maintains the tightest brood arc (~1.7°F/~0.9°C) and Hive #3 next (~2.9°F/~1.6°C), while Iris (~4.5°F/~2.5°C) and Hive #1 (~6.7°F/~3.7°C) show wider swings fully consistent with reduced brood mass during an August brood-contraction phase.
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Iris warning Score: 74/100📋 Overall Health
Your Iris hive's 24h average of 90.1°F (32.3°C) is essentially on her all-time average of 90.2°F (32.3°C) — the multi-week cooling drift has plateaued — and all 10 sound bands remain within ±0.7 dB of her all-time baseline, confirming the adult population is fully present and active; the most parsimonious explanation remains a brood contraction or brief laying pause, with acoustics showing no sign of population loss. Humidity averaged 40.8% (all-time avg 42.7%), appropriate for this dry-climate August; vibration at 17.2 mG avg with kurtosis 2.7 and a perfect 15/15-day fanning rhythm sits right at her all-time average — no concerns. On your next routine visit, a quick look at Iris's brood frames for fresh eggs will clarify whether the gentle cooling reflects a natural August contraction or a brief laying pause.
🌅 Diurnal Cycle PatternsIris shows a clear 24h temperature arc of 88.2–92.7°F (31.2–33.7°C), a +4.5°F (+2.5°C) daily swing consistent with reduced-brood August regulation; vibration peaks daily from ~16.6 mG to ~29.3 mG (1.8× baseline, 15/15 days), and sound energy shows a modest intra-day uptick in the lower bands (100–260 Hz +1.1–1.6 dB in the second half), consistent with afternoon foraging/recruitment activity. The per-band sound rhythm has shifted its dominant daily cycle from 150–200 Hz toward 200–260 Hz over the past two weeks — a subtle but stable spectral evolution that aligns with normal late-summer foraging recruitment (waggle-dance band) rather than any alarm signal. Gas heater-scan daily rhythm has shifted from 100°C to 150°C as dominant step, with no meaningful change in overall shape — consistent with slowly evolving ambient VOC composition as summer stores near completion.
🔬 Correlations & Discoveriestemperature vs sound_spectrum (14d) | r = +0.31The partial correlation between sound energy and in-hive temperature (controlling for outdoor temp, r=+0.31) reflects the well-documented link between brood-heating effort and colony acoustic activity — warmer in-hive temperatures are associated with more vigorous worker sound production, and the perfectly stable acoustic spectrum across the cooling trend confirms a brood-break rather than population loss.📚 Reference: Seeley & Tautz 2001, Ramsey et al. 2020temperature vs humidity (14d) | r = -0.51The deconfounded negative coupling between in-hive temperature and humidity (r=−0.51) is classic psychrometric behavior: as the colony heats the brood zone, the same absolute moisture content registers as lower RH% — a healthy thermoregulatory signature, not a drying event, explained by Human et al. 2006's hygroregulation work.📚 Reference: Human, Nicolson & Dietemann 2006, Eouzan et al. 2019⚠️ Issue: Multi-week gradual cooling drift now plateaued: 24h avg 90.1°F (32.3°C) is essentially on Iris's all-time avg of 90.2°F (32.3°C); weekly arc 91.2→88.9→90.1°F — acoustics fully stable (all bands within ±0.7 dB of baseline) confirming intact population, consistent with a brood-break or natural August brood contraction.▹ Action: On your next routine visit, check Iris's brood frames for fresh eggs and a solid laying pattern — the stable acoustics confirm a full, active population, and a quick look will confirm whether the cooling reflects a natural August brood contraction or a brief laying pause. -
Hive #2 healthy Score: 90/100📋 Overall Health
Your Hive #2 remains the apiary's thermal anchor — brood temperature averaged 95.3°F (35.2°C), exactly on its all-time average of 95.2°F (35.1°C) and squarely in the ideal 93–97°F (34–36°C) band, with a remarkably tight 24h arc of only 94.1–96.2°F (34.5–35.6°C) — outstanding late-summer brood clamping for a 15/15 fanning-day rhythm. Humidity averaged 47.2% (all-time avg 46.2%), comfortably in range; vibration at 15.1 mG avg with kurtosis 3.0 and daily peaks reaching ~50.6 mG (4.1× baseline) confirms vigorous colony metabolism — everything looks excellent heading into late August. Gas resistance at ~52 kΩ (all-time avg ~65 kΩ) remains below its historical baseline, sustained since early August and fully consistent with ongoing honey-ripening VOC activity with temperature and acoustics both normal.
🌅 Diurnal Cycle PatternsHive #2's 24h temperature arc of 94.1–96.2°F (34.5–35.6°C) is the tightest in the apiary (+2.1°F/+1.1°C swing), a textbook compressed diurnal range reflecting active brood thermoregulation; the dominant sound rhythm has shifted from 150–200 Hz to 100–150 Hz between the first and second half of the window, and vibration's dominant rhythm has migrated from 80–120 Hz toward 160–200 Hz with the 120–160 Hz and 160–200 Hz bands both strengthening (~5.5→7.8–8.0 dB). The gas heater-scan shows a meaningful low-temperature step drop (100°C −27%, 150°C −23%, 200°C −20%) with the dominant daily rhythm shifting from 100°C to 300°C — this shape change in the low-temperature steps, occurring while mid- and high-temperature steps hold relatively stable, is consistent with a gradual reduction in heavier/less-reactive volatiles (likely as honey stores approach full curation) rather than any alarm signal. The vibration rhythm strengthening in the upper bands likely reflects increased fanning intensity as the colony works to cap late-summer stores.
🔬 Correlations & Discoveriestemperature vs gas_resistance (14d) | r = +0.83The strong deconfounded coupling between in-hive temperature and gas resistance (r=+0.83) in Hive #2 reflects the thermodynamic link between brood heating and honey-ripening VOC output — warmer brood-zone temperatures drive increased evaporative fanning, circulating honey volatiles and raising the MOX VOC load in a well-documented healthy pattern; this is the most active honey-processing signature in the apiary.📚 Reference: Seeley 1974, Frizzera et al. 2020temperature vs humidity (14d) | r = +0.8Unlike Iris's negative temp-humidity coupling (psychrometric drying effect), Hive #2 shows a positive deconfounded correlation (r=+0.80), consistent with active evaporative-cooling water-carrier behavior in a high-brood-mass colony: as temperature rises, water-carrying bees increase internal moisture to cool the brood, coupling RH to thermal demand — a sign of a large, actively thermoregulating colony (Human et al. 2006).📚 Reference: Human, Nicolson & Dietemann 2006, Ellis et al. 2008▹ Action: On your next routine visit, note the fill level and capping progress on Hive #2's supers — the gradual shape-shift in the gas heater-scan low-temperature steps (100°C and 150°C steps declining) suggests honey-processing VOC activity may be slowly tapering as stores approach full curation, and recording the capped-frame count will give you a useful late-summer benchmark. -
Hive #1 warning Score: 75/100📋 Overall Health
Your Hive #1's multi-week cooling trend has materially stabilized this week — the 24h average of 87.7°F (30.9°C) is essentially on its all-time average of 87.4°F (30.8°C), and crucially all 10 sound bands remain within ±0.1 dB of their all-time baseline, a near-perfect acoustic match confirming the worker population is fully present and the previous 'watch' flag for a cooling drift is now much less acute. Humidity averaged 38.2% (all-time avg 37.6%), essentially on its historical norm and unsurprising given this apiary's very dry ambient; vibration at 16.0 mG avg with kurtosis 3.5 and a 15/15-day fanning rhythm confirms active colony metabolism — the brood-frame question remains open but there is no urgency. On your next routine visit, a brood-frame check will confirm whether this is a natural August contraction or a brief laying pause.
🌅 Diurnal Cycle PatternsHive #1's 24h arc of 84.5–91.2°F (29.2–32.9°C) is a +6.7°F (+3.7°C) swing, the widest in the apiary and consistent with reduced brood mass during August; the vibration dominant rhythm band has shifted from 20–50 Hz toward 120–160 Hz over the window, suggesting a gradual change in the nature of colony mechanical activity — lower-frequency disturbance-band vibration is decreasing relative to mid-frequency communication/fanning harmonics, a benign and positive evolution. The gas heater-scan shows the strongest daily rhythm of any hive at 100°C (+41% swing across 10/10 bands), reflecting robust daily ventilation cycling of ambient VOCs — this is a high-fanning colony with vigorous gas exchange, and the partial correlation gas resistance ~ in-hive temp (r=−0.83, controlling for outdoor) confirms that as Hive #1 warms up each day it actively circulates and expels hive VOCs, a healthy metabolic signature.
🔬 Correlations & Discoveriesgas_resistance vs temperature (14d) | r = -0.83Hive #1's strong negative partial correlation between gas resistance and in-hive temperature (controlling for outdoor weather, r=−0.83) reflects active fanning-driven VOC circulation: as the colony heats up each day, intensified fanning ventilates hive volatiles outward, reducing in-hive VOC concentration and raising gas resistance — a healthy, high-activity metabolic signature distinct from a passive ambient-tracking response.📚 Reference: Seeley 1974, Southwick & Moritz 1987vibration_spectrum vs vibration_kurtosis (14d) | r = +0.49The deconfounded vibration RMS–kurtosis coupling (r=+0.49) is consistent with normal impulsive activity superimposed on steady fanning — when overall vibration amplitude rises (peak foraging/fanning), brief higher-kurtosis events (landing, take-off, comb-contact signals) also increase proportionally, a well-documented diurnal metabolic pattern (Ramsey et al. 2020).📚 Reference: Ramsey et al. 2020, Tautz 1996⚠️ Issue: Gradual multi-week cooling now stabilizing: 24h avg 87.7°F (30.9°C) is near Hive #1's all-time avg of 87.4°F (30.8°C); weekly arc 88.5→87.8→86.0→87.7°F shows the drift has leveled — acoustics perfectly stable (all bands within ±0.1 dB of baseline) confirming the adult population is fully present and active, consistent with a brood-break or natural August brood contraction.▹ Action: On your next routine visit, check Hive #1's brood frames for fresh eggs and a solid laying pattern — the perfectly stable acoustics confirm a fully present worker population, and a quick look will clarify whether the multi-week temperature trend reflects a natural August brood contraction or a brief laying pause. -
Hive #3 healthy Score: 92/100📋 Overall Health
Your Hive #3 continues its outstanding run — brood temperature averaged 93.4°F (34.1°C) with a remarkably flat weekly arc (93.2→93.7→93.2°F), squarely in the ideal 93–97°F (34–36°C) band and exactly on its all-time average of 93.4°F (34.1°C); all 10 sound bands are within ±0.1 dB of their all-time baseline — a textbook stable, active colony heading into late August. Humidity averaged 47.4% (all-time avg 48.1%), the most consistently brood-optimal RH in the apiary; vibration at 20.7 mG avg with kurtosis 3.0 and daily peaks to ~35 mG (1.8× baseline, 15/15 days) sits right at its all-time average of 20.7 mG — everything looks excellent. Gas resistance at ~92 kΩ (all-time avg ~95 kΩ) is essentially on its historical baseline, a reassuring sign of stable hive chemistry.
🌅 Diurnal Cycle PatternsHive #3's 24h arc of 92.5–95.4°F (33.6–35.2°C) is a tight +2.9°F (+1.6°C) swing — excellent brood clamping against the outdoor 27°F range; the vibration dominant rhythm band has shifted from 5–20 Hz toward 160–200 Hz over the window, suggesting the colony's mechanical signature is moving from low-frequency structural activity toward upper harmonic fanning signals as late-summer honey-curing work intensifies. The gas heater-scan shows only 1/10 bands with a meaningful daily cycle (100°C, +14% swing), and the dominant rhythm step shifted from 150°C to 100°C — the very quiet, shape-stable gas scan indicates a settled, low-VOC-variation hive environment consistent with well-advanced honey curing where active processing has largely completed.
🔬 Correlations & Discoveriestemperature vs gas_resistance vs humidity (14d) | r = +0.77Hive #3's triple deconfounded coupling (temp~gas r=+0.77, temp~humidity r=+0.72, humidity~gas r=+0.60) mirrors Hive #2's pattern but at a quieter amplitude — higher brood temperature drives both greater moisture management and VOC circulation in a tightly integrated thermoregulatory system; the lower absolute gas VOC load relative to Hive #2 is consistent with more complete honey curation, corroborating the quieter gas heater-scan daily cycle.📚 Reference: Human, Nicolson & Dietemann 2006, Frizzera et al. 2020, Seeley 1974vibration_spectrum vs temperature (14d) | r = +0.36The partial correlation between in-hive humidity and temperature controlling for outdoor weather (r=+0.36) in Hive #3 reflects the same evaporative-cooling coupling seen in Hive #2 — a large population actively managing brood zone moisture in response to thermal demand, consistent with Nieh & Tautz 2000's vibration-activity coupling during peak foraging and fanning periods.📚 Reference: Ramsey et al. 2020, Nieh & Tautz 2000▹ Action: On your next routine visit, note the fill level and capping progress on Hive #3's supers — the very quiet, shape-stable gas heater-scan daily cycle suggests honey processing may be largely complete, and a capped-frame count will confirm whether this colony is ready for harvest.