Flash Flood Warning for Northwestern Hamilton County
If you are in immediate danger, call emergency services now.
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Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
NWS Jacksonville has issued a Flash Flood Warning for Northwestern Hamilton County in northern Florida until 6:45 PM EDT.
This weather record, quickly
- Record type
- Flash Flood Warning
- Affected area
- Northern Florida
- Issued
- September 20, 2026
- Issuing authority
- NWS Jacksonville FL
Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.
Record status: publication date is recent, but current status is not stored on this page. Check the issuing agency's live warning service before acting because warnings can be updated, narrowed, or cancelled.
Alert Details
Flash Flood Warning issued by NWS Jacksonville FL. Effective from 2026-09-20T15:43:00-04:00 until 2026-09-20T18:45:00-04:00. Severity: Severe. Urgency: Immediate. Certainty: Likely.
Affected Areas
Northwestern Hamilton County in northern Florida. Mainly rural areas.
What You Should Do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Expected Conditions
Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 2.5 and 3.5 inches of rain have fallen. Additional rainfall amounts of 1 to 3 inches are possible. Flash flooding is ongoing or expected to begin shortly.
Timeline
Alert in effect from September 20 at 3:43 PM EDT until September 20 at 6:45 PM EDT.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Similar notices nationwide by length or severity timing 8
Two cross-category peer sets, both computed from Areazine's own archive: notices with a similar body length, and notices near the same severity and agency date. These are drawn from other categories, not the same-feed Related list above.
Similar body length
Nearest notices by article body length (772 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to September 20, 2026.
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Common questions about this NWS weather alert.