Tornado Warning for Chester, PA; Delaware, PA
Official alert fields
What you need to know
- Effective
- Ended
- Official severity
- Extreme
- Official urgency
- Immediate
- Official certainty
- Observed
What is happening
At 551 PM EDT, a severe squall line capable of producing both tornadoes and extensive straight line wind damage was located along a line extending from near Lionville-Marchwood to Concordville, moving east at 40 mph. HAZARD...Tornado. SOURCE...Radar indicated rotation. IMPACT...Flying debris will be dangerous to...
What the bulletin says to do
TAKE COVER NOW! Move to a basement or an interior room on the lowest floor of a sturdy building. Avoid windows. If you are outdoors, in a mobile home, or in a vehicle, move to the closest substantial shelter and protect yourself from flying debris. This line of thunderstorms is capable of producing tornadoes and widespread significant wind damage. Do not wait to see or hear the tornado. For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with these storms, and may lead to flash flooding. Do not drive your vehicle through flooded roadways.
Full official description
Bulletin details
At 551 PM EDT, a severe squall line capable of producing both tornadoes and extensive straight line wind damage was located along a line extending from near Lionville-Marchwood to Concordville, moving east at 40 mph. HAZARD...Tornado. SOURCE...Radar indicated rotation. IMPACT...Flying debris will be dangerous to those caught without shelter. Mobile homes will be damaged or destroyed. Damage to roofs, windows, and vehicles will occur. Tree damage is likely. Locations impacted include... West Chester, Chester, Westtown, Downingtown, Cheyney, Lima, Chelsea, Lionville-Marchwood, Gradyville, Paoli, Chester Springs, Chester Township, Lionville, Concordville, and Nether Providence Township.
Lifecycle record
Official revisions
- Update
Tornado Warning issued August 20 at 5:51PM EDT until August 20 at 6:00PM EDT by NWS Mount Holly NJ
Official revision - Update
Tornado Warning issued August 20 at 5:34PM EDT until August 20 at 6:00PM EDT by NWS Mount Holly NJ
Official revision - Alert
Tornado Warning issued August 20 at 5:22PM EDT until August 20 at 6:00PM EDT by NWS Mount Holly NJ
Official revision
Source and limitations
Publisher: Weather Alert Watch. Primary source: NWS Mount Holly NJ. This page reorganizes official fields and does not add a forecast or expand the affected area.
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