Saint Johns County, FL Weather Alerts
Every National Weather Service alert issued for Saint Johns County, Florida, pushed to your phone within moments — county code FLC109, forecast zone 5 zones (FLZ633, FLZ533, FLZ433, FLZ233, FLZ333). Free with StormCast.
Download on Google PlayHow the NWS identifies Saint Johns County
These are the identifiers the National Weather Service uses when it issues a warning here. StormCast watches FLC109 directly rather than matching on place names, which is why an alert arrives whether you are in Elkton or anywhere else in the county.
NWS County Code
FLC109
Forecast Zones
5 zones (FLZ633, FLZ533, FLZ433, FLZ233, FLZ333)
Forecast Office
Jacksonville (JAX)
Radar Station
KJAX
Towns covered in Saint Johns County
An NWS alert for Saint Johns County applies to all 7 of these communities. You do not need a separate alert for each one.
River gauges in and around Saint Johns County
StormCast tracks 12 gauges near Saint Johns County. Set a flood-stage alert on any of them to get notified before the water reaches you.
- Trout Creek Marina near St. Johns River (in MHHW)
- Tolomato River above St. Augustine Airport (in MHHW)
- Durbin Creek at Racetrack Road (in NAVD88)
- St. Johns River at Shands Bridge (in MHHW)
- Guana River below Guana River Dam (in MHHW)
- St. Johns River at Shands Bridge
- Tide Station at St Augustine Municipal Marina (in MHHW)
- Guana River near Ponte Vedra South (in NAVD88)
- Julington Creek at Old Saint Augustine Road (in MHHW)
- Mizell Outfall on Matanzas River (in MHHW)
- St. Johns River at Racy Point (in MHHW)
- St. Johns River at Racy Point (in MHHW)
Current conditions
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Alert types issued for Saint Johns County
Tornado
Tornado Warning, Tornado Watch, Tornado Emergency and Severe Thunderstorm Warning.
How tornado alerts work →Flooding
Flash Flood Warning, Flood Watch, Flood Advisory and River Flood Warning.
How flood alerts work →Winter
Winter Storm Warning, Ice Storm Warning, Blizzard Warning and Winter Weather Advisory.
Winter warnings explained →Fire Weather
Red Flag Warning and Fire Weather Watch when conditions favor rapid fire spread.
Fire weather alerts →Heat & Cold
Excessive Heat Warning, Heat Advisory, Freeze Warning and Frost Advisory.
Frost & freeze alerts →Saint Johns County weather alert questions
Which NWS forecast zone is Saint Johns County in?
Saint Johns County, Florida is NWS county code FLC109 and spans 5 forecast zones (FLZ633, FLZ533, FLZ433, FLZ233, FLZ333). Alerts for it are issued by the Jacksonville (JAX) Weather Forecast Office, and the nearest NEXRAD radar is KJAX.
Which towns in Saint Johns County are covered?
All of them. NWS alerts are issued at the county and zone level, so a warning for Saint Johns County covers every community inside it, including Elkton, Hastings, Jacksonville, Ponte Vedra, Ponte Vedra Beach, Saint Augustine and Saint Johns.
Are there river gauges in Saint Johns County?
Yes — StormCast monitors 12 river gauges in and around Saint Johns County, including Trout Creek Marina near St. Johns River (in MHHW), Tolomato River above St. Augustine Airport (in MHHW), Durbin Creek at Racetrack Road (in NAVD88). You can set a flood-stage alert on any of them and get a push notification when the water rises.
How fast are alerts for Saint Johns County delivered?
StormCast polls the NWS alert feed every 30 seconds. When a warning is issued for FLC109, the push notification goes out within moments — even with your screen off.