add model training

cmd/ingestd/web/app.js

@@ -289,6 +289,60 @@ function updateText(id, text) {
   if (el) el.textContent = text;
 }
 
+function lastNonNull(points, key) {
+  for (let i = points.length - 1; i >= 0; i -= 1) {
+    const v = points[i][key];
+    if (v !== null && v !== undefined) {
+      return v;
+    }
+  }
+  return null;
+}
+
+function computeRainProbability(latest, pressureTrend1h) {
+  if (!latest) {
+    return null;
+  }
+
+  let prob = 0.1;
+  if (pressureTrend1h !== null && pressureTrend1h !== undefined) {
+    if (pressureTrend1h <= -3.0) {
+      prob += 0.5;
+    } else if (pressureTrend1h <= -2.0) {
+      prob += 0.35;
+    } else if (pressureTrend1h <= -1.0) {
+      prob += 0.2;
+    } else if (pressureTrend1h <= -0.5) {
+      prob += 0.1;
+    }
+  }
+
+  if (latest.rh !== null && latest.rh !== undefined) {
+    if (latest.rh >= 95) {
+      prob += 0.2;
+    } else if (latest.rh >= 90) {
+      prob += 0.15;
+    } else if (latest.rh >= 85) {
+      prob += 0.1;
+    }
+  }
+
+  if (latest.wind_m_s !== null && latest.wind_m_s !== undefined && latest.wind_m_s >= 6) {
+    prob += 0.05;
+  }
+
+  prob = Math.max(0.05, Math.min(0.95, prob));
+
+  let label = "Low";
+  if (prob >= 0.6) {
+    label = "High";
+  } else if (prob >= 0.35) {
+    label = "Medium";
+  }
+
+  return { prob, label };
+}
+
 function updateSiteMeta(site, model, tzLabel) {
   const home = document.getElementById("site-home");
   const suffix = document.getElementById("site-meta-suffix");
@@ -400,6 +454,13 @@ function renderDashboard(data) {
 
   const obsFiltered = filterRange(obs, rangeStart, rangeEnd);
   const forecast = filterRange(forecastAll, rangeStart, rangeEnd);
+  const lastPressureTrend = lastNonNull(obsFiltered, "pressure_trend_1h");
+  const rainProb = computeRainProbability(latest, lastPressureTrend);
+  if (rainProb) {
+    updateText("live-rain-prob", `${Math.round(rainProb.prob * 100)}% (${rainProb.label})`);
+  } else {
+    updateText("live-rain-prob", "--");
+  }
 
   const obsTemps = obsFiltered.map((p) => p.temp_c);
   const obsWinds = obsFiltered.map((p) => p.wind_m_s);

cmd/ingestd/web/index.html

@@ -58,6 +58,10 @@
             <div class="label">Pressure hPa</div>
             <div class="value" id="live-pressure">--</div>
           </div>
+          <div class="metric">
+            <div class="label">Rain 1h %</div>
+            <div class="value" id="live-rain-prob">--</div>
+          </div>
           <div class="metric">
             <div class="label">Wind m/s</div>
             <div class="value" id="live-wind">--</div>