OP

Storm drill

St. Lucie Nuclear Power Plant, Hutchinson Island, FL, 2024-05-19. Real NWS alerts and weather station observations, replayed minute by minute with no hindsight. Spot's round uses kit route M027.

Checking the drill's Neon branch…

11:45 AMEDT, 2024-05-19

GOHOLDRECALLRound finished

Dispatcher at 11:45 AM
Extra outdoor round launches 12:00 PM (the first quarter hour the dispatcher said GO; kit rounds run at 02:00, 10:00, 18:00) · 25 min · 10 stops
GO

Round can launch on schedule

No weather or health limits are close for this round.

Conditions at 11:45 AM: rain 0.0 mm/h · gust 41 km/h · 34 °C

Where Spot is
White dot = Spot. Blue line = the round's route.
WP01 Main Entrance: 85% inspections OK (17/20), 3 anomalies01WP02 Electrical Room: 69% inspections OK (9/13), 3 anomalies02WP03 Cooling Loop: 73% inspections OK (11/15), 3 anomalies03WP04 Pump Bay: 78% inspections OK (14/18), 1 anomalies04WP05 Pipe Gallery: 74% inspections OK (32/43), 8 anomalies05WP06 Compressor Area: 88% inspections OK (15/17), 2 anomalies06WP07 Control Room Corridor: 89% inspections OK (16/18), 3 anomalies07WP08 Turbine Hall North: 86% inspections OK (12/14), 2 anomalies08WP09 Turbine Hall South: 64% inspections OK (14/22), 6 anomalies09WP10 Valve Station: 92% inspections OK (11/12), 2 anomalies10
Floor 1
WP11 Battery Room: 91% inspections OK (20/22), 3 anomalies11WP12 Heat Exchanger Area: 93% inspections OK (13/14), 1 anomalies12WP13 Warehouse Corridor: 100% inspections OK (16/16), 1 anomalies13WP14 Auxiliary Systems Bay: 100% inspections OK (10/10), 0 anomalies14WP15 Inspection Dock: 69% inspections OK (11/16), 2 anomalies15DOCK
Floor 2

Color = share of inspections OK there (green ≥ 85%, yellow ≥ 70%, red below). Size = anomaly count. Dashed ring = outdoor leg (assumed).

Data sources and assumptions
  • Weather steps come from the Fort Pierce ASOS (FPR), about 21.0 km northwest of the plant on the mainland, not from the plant itself.
  • Each step summarizes the 15 minutes ending at its time, from ASOS 1-minute data: precipMmPerHour = mean 1-min precip (in) x 25.4 x 60; gustKmh = max 1-min gust (kt) x 1.852; tempC = last 1-min temperature (F) converted.
  • thunderPct is not a forecast probability. It is 100 when an FPR METAR or 5-min HFMETAR in the step's 15 minutes reports TS or VCTS, or a Severe Thunderstorm Warning with coversSite=true is active; otherwise null (unknown, not zero).
  • coversSite is true when the storm-based polygon contains the plant point, or when the product is county-wide for St. Lucie County (FLC111) or zone-wide for the plant's forecast zone (FLZ159). Alerts whose polygon misses the plant stay in the list with coversSite=false; area gives the distance.
  • Pop-up storm: no Severe Thunderstorm or Tornado Watch for St. Lucie County was active in the 2 hours before the first warning covering the plant (12:47). Severe Thunderstorm Watch MLB SV.A #258 was issued at 12:53, after that warning.
  • NCEI Storm Events times are EST (UTC-5) and were converted to EDT (UTC-4).
  • Missing 1-minute rows are skipped; a field is null only when its whole 15-minute block is missing.
  • nwsGrid comes from api.weather.gov/points for the site coordinates.
  • Return time = straight-line distance to the WP15 dock at 1 m/s, plus 1 min per floor change. Kit x/y units are assumed to be meters. Stairs are assumed walkable; Spot's guide says Autowalk is not meant for stairs, so a real route may need an elevator or a same-floor dock.