Station Name: East Branch Brandywine Creek below Downingtown, PA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 213 feet

Nearest Address:
Downingtown Pike
Downingtown, PA 19380
Chester County

GPS Coordinates: 39.9687191, -75.6732715

Nearby Water Temperatures

Heat Advisory issued June 12 at 3:59AM EDT until June 12 at 8:00PM EDT by NWS Mount Holly NJ

Effective: Fri June 12, 2026, 3:59 AM
Expires: Fri June 12, 2026, 5:00 PM

* WHAT...Heat index values up to 103 degrees expected. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Conditions will turn much less humid this weekend in the wake of a cold front tonight, however high temperatures will remain near 90 degrees.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. If you do not have air conditioning in your home or lack shelter, you can call 211, or visit your county or state health department website for assistance locating appropriate shelter from the heat.

Heat Advisory issued June 12 at 3:59AM EDT until June 12 at 8:00PM EDT by NWS Mount Holly NJ

Effective: Fri June 12, 2026, 3:59 AM
Expires: Fri June 12, 2026, 5:00 PM

* WHAT...Heat index values up to 101 degrees expected. * WHERE...Portions of northern and northwest New Jersey and east central and southeast Pennsylvania. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Conditions will turn much less humid this weekend in the wake of a cold front tonight, however high temperatures will remain in the mid 80s to near 90 degrees.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

Heat Advisory issued June 12 at 8:19AM EDT until June 12 at 8:00PM EDT by NWS Baltimore MD/Washington DC

Effective: Fri June 12, 2026, 8:19 AM
Expires: Fri June 12, 2026, 4:30 PM

* WHAT...Heat index values around 105 expected. * WHERE...DC and portions of central, north central, northeast, northern, and southern Maryland, and central, northern, and northwest Virginia. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.

Heat Advisory issued June 12 at 12:25AM EDT until June 12 at 8:00PM EDT by NWS State College PA

Effective: Fri June 12, 2026, 12:25 AM
Expires: Fri June 12, 2026, 12:30 PM

* WHAT...Heat index values up to 104. * WHERE...Adams, Cumberland, Dauphin, Lancaster, Lebanon, and York Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Some showers and thunderstorms today may provide local relief from the heat, but it will remain very humid.

Drink plenty of fluids, stay out of the sun, and stay in an air-conditioned room. Check up on relatives and neighbors, and provide pets with adequate water and shelter from the sun. Young children and pets should never be left unattended in vehicles under any circumstances. This is especially true during hot weather when car interiors can reach lethal temperatures in a matter of minutes. LOOK BEFORE YOU LOCK. Know the signs and symptoms of heat exhaustion and heat stroke. Review heat safety and preparedness information at weather.gov/safety/heat.

Heat Advisory issued June 12 at 6:23AM EDT until June 12 at 8:00PM EDT by NWS State College PA

Effective: Fri June 12, 2026, 6:23 AM
Expires: Fri June 12, 2026, 8:00 PM

* WHAT...Heat index values up to 103. * WHERE...Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon, and York Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay out of the sun, and stay in an air-conditioned room. Check up on relatives and neighbors, and provide pets with adequate water and shelter from the sun. Young children and pets should never be left unattended in vehicles under any circumstances. This is especially true during hot weather when car interiors can reach lethal temperatures in a matter of minutes. LOOK BEFORE YOU LOCK. Know the signs and symptoms of heat exhaustion and heat stroke. Review heat safety and preparedness information at weather.gov/safety/heat.