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NWS / NWPSSite ID: ARGW1active

NWS / NWPS ARGW1

North Fork Stillaguamish River near Arlington

North Fork Stillaguamish River • Snohomish • WA

Latest public reading1,320 cfsObserved May 13, 2026 at 10:15 PM CDT
TrendNo clear trendForecast available
Data freshness StaleObservation 321 minutes old
Flood contextNo source flood categoryFetched Timestamp unavailable

Stage and discharge

Observed source readings

Stage and discharge

Daily rollups and linked forecast values

Observed Forecast

Stage and discharge chart includes 1 observed point and 40 forecast points.

Line chart: Observed, Forecast02004006008001.0K1.2K1.4K2026-05-142026-07-01
Data series

Flood-stage context

Source-published thresholds where available

Action10.7 ftSource-backed threshold
Minor flood13 ftSource-backed threshold
Moderate flood14 ftSource-backed threshold
Major flood15 ftSource-backed threshold

Forecast

Linked NWS/NWPS values

HGIFZ • stage2.22 ftValid Jun 21, 2026 at 7:00 PM CDT
HGIFZ • stage2.21 ftValid Jun 22, 2026 at 1:00 AM CDT
HGIFZ • stage2.2 ftValid Jun 22, 2026 at 7:00 AM CDT
HGIFZ • stage2.2 ftValid Jun 22, 2026 at 1:00 PM CDT
HGIFZ • stage2.19 ftValid Jun 22, 2026 at 7:00 PM CDT
HGIFZ • stage2.18 ftValid Jun 23, 2026 at 1:00 AM CDT

Observations

flow

1,320 cfs

Observed May 13, 2026 at 7:00 PM CDT

Alerts

Alerts unavailable

Alerts are shown only when the API returns a source-backed match.

Official public sources

Readings and thresholds stay tied to USGS, NOAA/NWS, or source-backed records.

Source freshness

Observed and fetched timestamps are shown separately when the API returns them.

Transparent methodology

Unavailable forecasts, alerts, and thresholds are shown as unavailable states.