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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 14.08 ft at 2026-10-18 11:00:00 UTC · Action stage.

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

Source checked 2026-10-18 12:35:05.508Z · 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: 23; target 24 hours, at most 96 reports per station. Recording began 2026-10-17 06:15:05.234Z; oldest available reading 2026-10-17 13:00:00 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.15.513.1ft10-17 13:00Z10-18 11:00Z2026-10-17 13:00:00 UTC · 14.46 ft2026-10-17 14:00:00 UTC · 14.46 ft2026-10-17 15:00:00 UTC · 14.49 ft2026-10-17 16:00:00 UTC · 14.45 ft2026-10-17 17:00:00 UTC · 14.37 ft2026-10-17 18:00:00 UTC · 14.38 ft2026-10-17 19:00:00 UTC · 14.37 ft2026-10-17 20:00:00 UTC · 14.39 ft2026-10-17 21:00:00 UTC · 14.3 ft2026-10-17 22:00:00 UTC · 14.26 ft2026-10-17 23:00:00 UTC · 14.28 ft2026-10-18 00:00:00 UTC · 14.26 ft2026-10-18 01:00:00 UTC · 14.24 ft2026-10-18 02:00:00 UTC · 14.2 ft2026-10-18 03:00:00 UTC · 14.25 ft2026-10-18 04:00:00 UTC · 14.16 ft2026-10-18 05:00:00 UTC · 14.12 ft2026-10-18 06:00:00 UTC · 14.13 ft2026-10-18 07:00:00 UTC · 14.15 ft2026-10-18 08:00:00 UTC · 14.07 ft2026-10-18 09:00:00 UTC · 14.15 ft2026-10-18 10:00:00 UTC · 14.05 ft2026-10-18 11:00:00 UTC · 14.08 ft
Observed stage and separate NWS forecast · 23 retained observations; 0 discontinuities. Lines join reported values only; missing intervals are not interpolated.

NWS forecast · current

No forecast maximum supplied.

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 (23)
Observed (UTC)Stage / unitsSource category / water
2026-10-17 13:00:00 UTC14.46 ftAction stage · River gauge
2026-10-17 14:00:00 UTC14.46 ftAction stage · River gauge
2026-10-17 15:00:00 UTC14.49 ftAction stage · River gauge
2026-10-17 16:00:00 UTC14.45 ftAction stage · River gauge
2026-10-17 17:00:00 UTC14.37 ftAction stage · River gauge
2026-10-17 18:00:00 UTC14.38 ftAction stage · River gauge
2026-10-17 19:00:00 UTC14.37 ftAction stage · River gauge
2026-10-17 20:00:00 UTC14.39 ftAction stage · River gauge
2026-10-17 21:00:00 UTC14.3 ftAction stage · River gauge
2026-10-17 22:00:00 UTC14.26 ftAction stage · River gauge
2026-10-17 23:00:00 UTC14.28 ftAction stage · River gauge
2026-10-18 00:00:00 UTC14.26 ftAction stage · River gauge
2026-10-18 01:00:00 UTC14.24 ftAction stage · River gauge
2026-10-18 02:00:00 UTC14.2 ftAction stage · River gauge
2026-10-18 03:00:00 UTC14.25 ftAction stage · River gauge
2026-10-18 04:00:00 UTC14.16 ftAction stage · River gauge
2026-10-18 05:00:00 UTC14.12 ftAction stage · River gauge
2026-10-18 06:00:00 UTC14.13 ftAction stage · River gauge
2026-10-18 07:00:00 UTC14.15 ftAction stage · River gauge
2026-10-18 08:00:00 UTC14.07 ftAction stage · River gauge
2026-10-18 09:00:00 UTC14.15 ftAction stage · River gauge
2026-10-18 10:00:00 UTC14.05 ftAction stage · River gauge
2026-10-18 11:00:00 UTC14.08 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 13:00:00 UTC, captured 2026-10-17 13:45:07.143Z; source body SHA-256 152c859ad430a8e0d2ffc28a0f51f5130404f5f6721b81e140d5688b4fdcea57.
  • Observed 2026-10-17 14:00:00 UTC, captured 2026-10-17 14:45:09.236Z; source body SHA-256 a6833f55ffe1968d740aeafafef620a72fad0253d816679bb8a664b231f7709e.
  • Observed 2026-10-17 15:00:00 UTC, captured 2026-10-17 15:45:05.072Z; source body SHA-256 bc46093667a909a382a079b402336f71b796cc7127c1e4794ebdd3983666ee0c.
  • Observed 2026-10-17 16:00:00 UTC, captured 2026-10-17 16:45:35.615Z; source body SHA-256 0b40be2ac7a73e9497b09028d28aaaa9d33fa6164f556ed7412c6426a786a251.
  • Observed 2026-10-17 17:00:00 UTC, captured 2026-10-17 17:45:05.445Z; source body SHA-256 3cccde1ecb1a1c168ec49fc749b2d560958c18957a8f3242181fe5c64f160c46.
  • Observed 2026-10-17 18:00:00 UTC, captured 2026-10-17 18:45:07.189Z; source body SHA-256 05dd767c85748e9a16ef3da8d862ac7af6f3ea1e46e090022714a47205e48848.
  • Observed 2026-10-17 19:00:00 UTC, captured 2026-10-17 19:45:07.297Z; source body SHA-256 0c5c2e951418422e829868d6340e946c222cc8c6fefd6061bb657410339e4df2.
  • Observed 2026-10-17 20:00:00 UTC, captured 2026-10-17 20:45:05.720Z; source body SHA-256 7f2551438267833ec9353db6d05261524189c53bd2e697f348f7df87ddf399b5.
  • Observed 2026-10-17 21:00:00 UTC, captured 2026-10-17 21:45:07.045Z; source body SHA-256 43a2e7d545d29fab597c64dfa377979cf0e4cde3c006abfee356d3d9551278cc.
  • Observed 2026-10-17 22:00:00 UTC, captured 2026-10-17 22:45:06.961Z; source body SHA-256 81897733eaebfe0f53f6bd6934cb4096aec879e50dcd7cdd4ea70fc8c6e69354.
  • Observed 2026-10-17 23:00:00 UTC, captured 2026-10-17 23:45:07.141Z; source body SHA-256 e0aa2cdbffe75e84b482e35023ac443e84b1c9dd6a699489f102761b277e05b7.
  • Observed 2026-10-18 00:00:00 UTC, captured 2026-10-18 00:45:06.728Z; source body SHA-256 afec4416ea0f8de0c9a380660fb699f0e6f2f6de46c7f2306163e8220dd91163.
  • Observed 2026-10-18 01:00:00 UTC, captured 2026-10-18 01:45:07.743Z; source body SHA-256 96839b0335ecd43c6dabc983d11df8aeab91e36e5e3372f860eba9f2b2d95541.
  • Observed 2026-10-18 02:00:00 UTC, captured 2026-10-18 02:45:07.313Z; source body SHA-256 62c302570e4c9664062c4d26c0d93ac08750be9a01c8a2e2ac4de36859f02861.
  • Observed 2026-10-18 03:00:00 UTC, captured 2026-10-18 03:45:07.896Z; source body SHA-256 4887920066f1fd446f3fc0a9c54e7c8d1c5ed9910016019e90ef50b19ca74968.
  • Observed 2026-10-18 04:00:00 UTC, captured 2026-10-18 04:45:06.385Z; source body SHA-256 8cea083d6932c01bf6481890352407106b23688126b53d02872d2802cf6bae93.
  • Observed 2026-10-18 05:00:00 UTC, captured 2026-10-18 05:45:06.584Z; source body SHA-256 6ed9115dfead54b0e075dfbe05d2b62ebd3130e8f5d1f4f403faba9da112763a.
  • Observed 2026-10-18 06:00:00 UTC, captured 2026-10-18 06:45:07.545Z; source body SHA-256 9cc0eb80af90f52238c726b6d50cafa53d7706bcb8d83f269f808e2365fab14b.
  • Observed 2026-10-18 07:00:00 UTC, captured 2026-10-18 08:05:05.199Z; source body SHA-256 af8d5a866109b6c6c1b34388f3ca1846059323ab2b511b160e5438571fe1ce50.
  • Observed 2026-10-18 08:00:00 UTC, captured 2026-10-18 08:45:08.004Z; source body SHA-256 77057086dbcf79ff48990feddd832c0e48635fa92e67025d34584a9a07168b2d.
  • Observed 2026-10-18 09:00:00 UTC, captured 2026-10-18 09:45:07.931Z; source body SHA-256 d4e4cc77d19cc3ff72d6286cb8f725b077587b20c7ce618af7e66a4252b5b6ce.
  • Observed 2026-10-18 10:00:00 UTC, captured 2026-10-18 10:45:06.147Z; source body SHA-256 f9ec384b81483e72a9ae5337534a7a06fa87afcdf9f48f460f2ce7a8d1bfd304.
  • Observed 2026-10-18 11:00:00 UTC, captured 2026-10-18 11:45:06.462Z; source body SHA-256 b99d58187ca3ea4cc4b9d6c52c512aab30f4d472ae0434818778db973a9178fb.

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

2 total · source current; checked . Showing 2 on page 1. 0 gauges have suspect readings set aside.

Source status · Storm Mode