It's in effect until early Friday afternoon.
Doppler radar indicated slow-moving heavy showers and thunderstorms training over the same location and producing heavy rain across the warned area, the NWS said. With up to 2″ of rain already down and more to come, flash flooding is ongoing or expected to begin shortly, the weather service said.
It is possible around small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. Locations affected by the warning include Lititz, Mount Joy, Manheim, East Petersburg and Salunga-Landisville.Deciphering advisories, watches, and warnings: Understanding weather alertsA flash flood warning is issued when a flash flood is imminent or occurring. If you are in a flood-prone area, move immediately to high ground. A flash flood is a sudden violent flood that can take from minutes to hours to develop. It is even possible to experience a flash flood in areas not immediately receiving rain.A flood warning is declared when flooding is on the verge of happening or is already underway.A flood advisory is issued when flooding is not expected to be bad enough to issue a warning. However, it may cause significant inconvenience, and if caution is not exercised, it could lead to situations that may threaten life and/or property.A flood watch is issued when conditions are favorable for flooding. It doesn’t guarantee that flooding will occur, but it signifies that the possibility exists.In flood-prone regions or while camping in low-lying areas, understanding and following the weather service flood safety guidelines can be a lifesaver:If you reside in a flood-prone region or are camping in low-lying terrain, the first step to safety is relocating to higher ground.When local authorities issue an evacuation order, promptly comply. Before leaving, secure your home by locking it.If time allows, disconnect your utilities and appliances. This reduces the risk of electrical hazards during flooding.Steer clear of basements or rooms where water has submerged electrical outlets or cords. This helps prevent electrical accidents.If you notice sparks or hear buzzing, crackling, snapping, or popping noises, evacuate immediately. Avoid any water that may be charged with electricity.Never attempt to walk through floodwaters. Even just 6 inches of swiftly moving water can forcefully knock you off your feet.In the event you become trapped by moving water, make your way to the highest point available and contact emergency services by calling 911. During heavy rain, flooding is possible, especially in low-lying and flood-prone areas. Never drive through water on the road, even if it does not appear to be deep. It takes just 12 inches of rushing water to carry away most cars, according to the weather service. Prioritize your safety by staying informed and prepared.Heavy rainfall may lead to flooding if prolonged or if there is excessive runoff. Excessive runoff can be a result of saturated ground and/or rainfall intensity. Follow these recommendations from the weather service to stay safe in heavy rain:During heavy rain, avoid parking or walking near culverts or drainage ditches, where swift-moving water can pose a serious risk.Adhere to the two-second rule for maintaining a safe following distance behind the vehicle in front of you. In heavy rain, allow an additional two seconds of distance to compensate for reduced traction and braking effectiveness.On wet roads, reducing your speed is crucial. Ease off the gas pedal gradually and avoid abrupt braking to prevent skidding.Stick to the middle lanes to minimize the risk of hydroplaning. Outer lanes are more prone to accumulating water.Turn on your headlights and be careful of other vehicles to the rear and in blind spot areas as they are especially difficult to see through rain-spattered windows.The initial half-hour of rain is when roads are slickest due to a mixture of rain, grime, and oil. Exercise heightened caution during this period.Large trucks and buses can reduce your visibility with tire spray. Avoid tailgating and pass them swiftly and safely.Overloaded wiper blades can hinder visibility. If rain severely limits your sight, pull over and wait for conditions to improve. Seek refuge at rest areas or protected spots. If the roadside is your only option, pull off as far as possible, preferably past the end of a guard rail, and wait until the storm passes. Keep your headlights on and turn on emergency flashers to alert other drivers of your position. In the face of heavy rain, these precautions can make a significant difference in ensuring your safety on the road. Remember to stay informed about weather conditions and heed guidance from local authorities for a secure journey. Advance Local Weather Alerts is a service provided by United Robots, which uses machine learning to compile the latest data from the National Weather Service. If you purchase a product or register for an account through a link on our site, we may receive compensation.
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