Warning Vector

Flash Flood Warning

NWS Jacksonville FL ยท US

New
This event was updated at .

Details

Flash Flood Warning Issued September 20 At 3:43PM EDT Until September 20 At 6:45PM EDT By NWS Jacksonville FL

Event
Flash Flood Warning
Issued
Onset
Message expires
Expected end
Category
Meteorological
Urgency
Immediate
Severity
Severe
Certainty
Likely
Response
Avoid

Description

Overview

FFWJAX The National Weather Service in Jacksonville has issued a * Flash Flood Warning for... Northwestern Hamilton County in northern Florida... * Until 645 PM EDT. * At 343 PM EDT, 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 in the warned area. Flash flooding is ongoing or expected to begin shortly.

Hazard

Flash flooding caused by thunderstorms.

Source

Radar indicated.

Impacts

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... Mainly rural areas of Northwestern Hamilton County.

Instructions

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

Affected areas

  • Hamilton County, FL

Public contact

Issuer
NWS Jacksonville FL

Message record

Received
Issue to receipt
~1m2s
CAP status
Actual
CAP message type
Alert
Lifecycle
New
Source
NWWS-OI
Feed
NWWS
Recovered
No
CAP routing and identity
ULID
01M305HNBZWNJK509QGNX1CWYQ
Identifier
urn:oid:2.49.0.1.840.0.249b3c5c00f8c72a919dbca7c60a3fe5ca4b23b7.001.1
Sender
w-nws.webmaster@noaa.gov
Scope
Public
CAP source
211803 v2.3.0
Handling codes
IPAWSv1.0
Issuing office
NWS Jacksonville FL
AWIPS ID
CAPJAX
NWWS sequence
nwws_processor.2839
WMO heading
XOUS52
WMO data type
CAP alert message XML (XO)
WMO geography
United States (US)
WMO bulletin number
52

Event codes

NameValue
SAMEFFW
NationalWeatherServiceFFW

Parameters

NameValue
AWIPSidentifierFFWJAX
WMOidentifierWGUS52 KJAX 201943
flashFloodDetectionRADAR INDICATED
BLOCKCHANNELEAS
BLOCKCHANNELNWEM
EAS-ORGWXR
VTEC/O.NEW.KJAX.FF.W.0026.260920T1943Z-260920T2245Z/
eventEndingTime2026-09-20T18:45:00-04:00
BLOCKCHANNELCMAS
Locations

Location data

  • Hamilton County, FL
NameValue
SAME012047
UGCFLC047
Polygons
30.58,-83.13 30.58,-83.21 30.57,-83.21 30.57,-83.23 30.53,-83.23 30.53,-83.22 30.52,-83.22 30.52,-83.12 30.53,-83.12 30.54,-83.11 30.54,-83.12 30.55,-83.12 30.55,-83.11 30.58,-83.11 30.58,-83.13