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Flash Flood Warning issued October 10 at 10:56AM ChST until October 10 at 11:45AM ChST by NWS Tiyan GU

Latest captured source record. This is an archive, not a current warning service.

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First tracked
2026-10-10 00:44:51.079Z
Last seen in a feed
2026-10-10 00:59:51.083Z
Source classification
Severe · Source update
Issuer / area
NWS Tiyan GU · Guam, GU
Certainty / urgency
Likely / Immediate
Message expiry (not hazard end)
2026-10-10T01:45:00.000Z
Forecast onset / end
2026-10-10T00:56:00.000Z / 2026-10-10T01:45:00.000Z

Flash Flood Warning · Guam, GU. Severe; likely; urgency: immediate.

Archived official description

At 1056 AM ChST, Doppler radar and automated rain gauges indicated that heavy rain was falling across the warned area. Between 2 and 4 inches of rain have fallen. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by heavy rain. SOURCE...Radar and automated gauges. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. Some locations that will experience flash flooding include... Chalan Pago-Ordot, Yona, Talofofo, Inarajan, Asan, Merizo, Piti, Santa Rita and Umatac.

Instructions in this archived message

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.

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How the record changed

Only changes captured by this journal are listed; this is not the authority’s complete history. Timestamps distinguish publication from our capture. Missing messages are never treated as cancellations.

  1. newly tracked · Captured 2026-10-10 00:44:51.079Z

    Flash Flood Warning issued October 10 at 10:41AM ChST until October 10 at 11:45AM ChST by NWS Tiyan GU

    Flash Flood Warning · Guam, GU. Severe; likely; urgency: immediate.

    Source issued/updated 2026-10-10T00:41:00.000Z · Source alert

    Source for this capture ↗

  2. revised · Captured 2026-10-10 00:59:51.083Z

    Flash Flood Warning issued October 10 at 10:56AM ChST until October 10 at 11:45AM ChST by NWS Tiyan GU

    Flash Flood Warning · Guam, GU. Severe; likely; urgency: immediate.

    Source issued/updated 2026-10-10T00:56:00.000Z · Source update

    Source for this capture ↗