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Storm Mode / Observations

Station and river observations

METAR/SPECI uses the existing AviationWeather.gov bulk cache over the lower 48 and its margin. NWPS retains only gauges in the existing action-stage-or-above observed list; forecast-only gauges can have no observation. Absence never establishes zero wind, low water, or safe conditions.

Water-level gauge MIWI4

current · Observed 14.51 ft at 2026-10-17 10:00:00 UTC · Action stage.

River gauge · Marshalltown · Iowa River · -92.9077, 42.065821. Units ft; datum not supplied.

Source checked 2026-10-17 11:45:05.506Z · current.

Stage in this gauge’s units, not a regional flood depth. Tide/lake gauges remain water levels; datum is not supplied by this feed. Historical observations and the latest forecast keep separate times.

Retained observations: 6; target 24 hours, at most 96 reports per station. Recording began 2026-10-17 06:15:05.234Z; oldest available reading 2026-10-17 05:00:00 UTC.

Observed stage and separate NWS forecast at MIWI4 (ft)Dots are retained observations. Lines break for missing fields, long intervals or changed station location or units. 0 recorded discontinuities. Dashed lines, when present, are the separately issued NWS forecast.15.613.5ft10-17 05:00Z10-17 10:00Z2026-10-17 05:00:00 UTC · 14.63 ft2026-10-17 06:00:00 UTC · 14.6 ft2026-10-17 07:00:00 UTC · 14.63 ft2026-10-17 08:00:00 UTC · 14.56 ft2026-10-17 09:00:00 UTC · 14.63 ft2026-10-17 10:00:00 UTC · 14.51 ft
Observed stage and separate NWS forecast · 6 retained observations; 0 discontinuities. Lines join reported values only; missing intervals are not interpolated.

NWS forecast · current

Highest listed forecast: 14.6 ft at 2026-10-17 12:00:00 UTC; issued 2026-10-17 01:14:00 UTC. Action stage.

Impacts and the full forecast are read for gauges in flood; this one is at action stage.

Gauge thresholds: action 14 ft; minor 19 ft; moderate 23 ft; major 26 ft.

Observed reports as a table (6)
Observed (UTC)Stage / unitsSource category / water
2026-10-17 05:00:00 UTC14.63 ftAction stage · River gauge
2026-10-17 06:00:00 UTC14.6 ftAction stage · River gauge
2026-10-17 07:00:00 UTC14.63 ftAction stage · River gauge
2026-10-17 08:00:00 UTC14.56 ftAction stage · River gauge
2026-10-17 09:00:00 UTC14.63 ftAction stage · River gauge
2026-10-17 10:00:00 UTC14.51 ftAction stage · River gauge
Capture times, quality and provenance

Each report keeps its observation time, first capture of this version, and the SHA-256 of the source bulk body. Corrections at the same observation time replace that point and are marked; unrelated bulk-file changes do not freshen a report.

  • Observed 2026-10-17 05:00:00 UTC, captured 2026-10-17 06:15:05.234Z; source body SHA-256 59def4ab364727656cb6987939ba27a3a22ae792b74344565dc73a5086b5ca2b.
  • Observed 2026-10-17 06:00:00 UTC, captured 2026-10-17 07:05:03.665Z; source body SHA-256 5669bcdb8c668c19675922a1e063b795649d4f988db328e21d7a7d4b91b9a3d4.
  • Observed 2026-10-17 07:00:00 UTC, captured 2026-10-17 08:05:04.368Z; source body SHA-256 65352b4d0286750024cc23e7fcd002a3abc32063acdeb744c720c908fcded24c.
  • Observed 2026-10-17 08:00:00 UTC, captured 2026-10-17 09:05:04.945Z; source body SHA-256 85af434a4d3836cda6aa7dfdfd7e5eef87a4fde33c9f1d747d91b57f894dac5f.
  • Observed 2026-10-17 09:00:00 UTC, captured 2026-10-17 10:05:03.340Z; source body SHA-256 1de62a16559f0f67aea45a5a3342bde8ec10276966859c007f757b8c42f4fa06.
  • Observed 2026-10-17 10:00:00 UTC, captured 2026-10-17 11:05:09.398Z; source body SHA-256 cbfb354adb92b821254e0b097a7b6ce494a1f9a55b161e0f970a7c89ce5ad67e.

Only observed gauge records enter this history. Forecast maxima and forecast hydrograph points never become observations. A missing datum or unsupported flow value remains unknown.

Observation source page · Cached readings as JSON · Official source

Gauges in the latest cached source

112 total · source current; checked . Showing 12 on page 2. 0 gauges have suspect readings set aside.

Source status · Storm Mode