Chester County, PA Weather Alerts
Every National Weather Service alert issued for Chester County, Pennsylvania, pushed to your phone within moments — county code PAC029, forecast zone 4 zones (PAZ101, PAZ102, PAZ104, PAZ103). Free with StormCast.
Download on Google PlayHow the NWS identifies Chester County
These are the identifiers the National Weather Service uses when it issues a warning here. StormCast watches PAC029 directly rather than matching on place names, which is why an alert arrives whether you are in Atglen or anywhere else in the county.
NWS County Code
PAC029
Forecast Zones
4 zones (PAZ101, PAZ102, PAZ104, PAZ103)
Forecast Office
Mount Holly (PHI)
Radar Station
KDIX
Towns covered in Chester County
An NWS alert for Chester County applies to all 55 of these communities. You do not need a separate alert for each one.
River gauges in and around Chester County
StormCast tracks 7 gauges near Chester County. Set a flood-stage alert on any of them to get notified before the water reaches you.
Current conditions
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Alert types issued for Chester 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 →Chester County weather alert questions
Which NWS forecast zone is Chester County in?
Chester County, Pennsylvania is NWS county code PAC029 and spans 4 forecast zones (PAZ101, PAZ102, PAZ104, PAZ103). Alerts for it are issued by the Mount Holly (PHI) Weather Forecast Office, and the nearest NEXRAD radar is KDIX.
Which towns in Chester County are covered?
All of them. NWS alerts are issued at the county and zone level, so a warning for Chester County covers every community inside it, including Atglen, Avondale, Berwyn, Birchrunville, Brandamore, Chatham, Chester Springs, Coatesville, Cochranville, Devault, Devon, Downingtown, Elverson, Exton, Glenmoore, Honey Brook, Immaculata, Kelton, Kemblesville, Kennett Square, Kimberton, King Of Prussia, Landenberg, Lewisville, Lincoln University, Lionville, Lyndell, Malvern, Mendenhall, Modena, New London, Norristown, Nottingham, Oxford, Paoli, Parker Ford, Parkesburg, Phoenixville, Pocopson, Pomeroy, Pottstown, Sadsburyville, Saint Peters, Southeastern, Spring City, Suplee, Thorndale, Toughkenamon, Unionville, Uwchland, Valley Forge, Wagontown, West Chester, West Grove and Westtown.
Are there river gauges in Chester County?
Yes — StormCast monitors 7 river gauges in and around Chester County, including East Branch Brandywine Creek below Downingtown, West Branch Brandywine Creek at Modena, West Branch Brandywine Creek at Coatesville. 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 Chester County delivered?
StormCast polls the NWS alert feed every 30 seconds. When a warning is issued for PAC029, the push notification goes out within moments — even with your screen off.