Weather Alerts For Saint Lawrence, PA

# HEADLINE -------------------- FLOOD WATCH REMAINS IN EFFECT UNTIL 4 AM EDT FRIDAY # DETAILS -------------------- WHAT Flash flooding caused by excessive rainfall continues to be possible. WHERE Portions of New Jersey, including the following areas, Hunterdon, Mercer, Middlesex, Morris, Somerset, Sussex and Warren and Pennsylvania, including the following areas, Berks, Delaware, Eastern Chester, Eastern Montgomery, Lehigh, Lower Bucks, Northampton, Philadelphia, Upper Bucks, Western Chester and Western Montgomery. WHEN Until 4 AM EDT Friday. IMPACTS Flooding may occur in poor drainage and urban areas. ADDITIONAL DETAILS - Showers and thunderstorms continue this evening across eastern Pennsylvania and northern New Jersey. Rainfall rates up to 1 to 2 inches per hour remain possible in these storms with already saturated grounds from heavy rain earlier in the day. - http://www.weather.gov/safety/flood ISSUED AT Thursday, August 27, 2026 at 10:52 PM EDT ISSUED BY National Weather Service Mount Holly NJ HEADER Flood Watch # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. # AREAS AFFECTED -------------------- Lehigh, Berks, Delaware, Eastern Chester, Eastern Montgomery, Hunterdon, Lower Bucks, Mercer, Middlesex, Morris, Northampton, Philadelphia, Somerset, Sussex, Upper Bucks, Warren, Western Chester, Western Montgomery Including the cities of Somerville, Pottstown, Norristown, Chalfont, Washington, Flemington, Philadelphia, Kennett Square, Lansdale, West Chester, Newton, Doylestown, New Brunswick, Reading, Trenton, Honey Brook, Bethlehem, Media, Morrisville, Easton, Perkasie, Oxford, Collegeville, Allentown, and Morristown

A Weather Alert has been issued for a nearby area. While your current location is outside of the impacted area, please stay alert and monitor weather conditions. # SUMMARY -------------------- The National Weather Service in Mount Holly has issued a - Flash Flood Warning for... Southeastern Berks County in eastern Pennsylvania... North Central Chester County in southeastern Pennsylvania... West Central Montgomery County in southeastern Pennsylvania... - Until 130 AM EDT. - At 1036 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. The expected rainfall rate is 1 to 2 inches in 1 hour. Flash flooding is ongoing or expected to begin shortly. # DETAILS -------------------- HAZARD Flash flooding caused by thunderstorms. SOURCE Radar indicated. IMPACT Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE Pottstown, Birdsboro, Elverson, New Morgan, Cedarville, Stowe, Amity Gardens, South Pottstown, Kenilworth, Halfway House, Pottsgrove and Sanatoga. ISSUED AT Thursday, August 27, 2026 at 10:36 PM EDT ISSUED BY Issued by National Weather Service New York NY HEADER BULLETIN - EAS ACTIVATION REQUESTED | Flash Flood Warning | National Weather Service Mount Holly NJ # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely.

Closest strike: 2.74 miles Stay Alert! Remain in a safe area until there has been no lightning within 10 miles of this location for 30 minutes. Please be aware that lightning activity can remain high even when a storm is moving away from your location. Even if rain has stopped, do not leave your safe area until WeatherBug indicates that lightning is more than 10 miles away from this selected location. IF OUTDOORS Avoid water, high ground, and open spaces. Avoid all metal objects including electric wires, fences, and machinery. Find a safe area in a building or in a fully enclosed vehicle with the windows completely shut. Unsafe places include underneath canopies, small picnic or rain shelters, convertibles, or near trees. IF INDOORS Avoid water and stay away from doors and windows. Avoid using a hard line telephone. Take off headphones. Turn off, unplug, and stay away from appliances, computers, power tools, and TV sets. Lightning may strike exterior electric and phone lines, inducing shocks to inside equipment.

There is a Slight Severe Storm Risk for your location. Continue reading for today's outlook from the National Weather Service's Storm Prediction Center. -------------------- National Severe Storm Outlook THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR PARTS OF WEST-CENTRAL NE INTO NORTHWEST KS...NORTHERN MID-ATLANTIC...AND WEST-CENTRAL MT SUMMARY Storms capable of producing severe hail and wind remain possible this evening across west-central Nebraska into northwest Kansas. Localized wind damage also remains possible over parts of the Mid-Atlantic and Northeast. Storms with localized severe gusts will continue through the evening across west-central Montana. Central Plains Earlier supercells have congealed into a small southward-moving cluster across northwest NE. Steep lapse rates, strong buoyancy (MLCAPE of 2000-3000 J/kg) and effective shear of 40-50 kt (as observed on the 00Z LBF sounding) within a northwesterly flow regime will continue to support organized storms through the evening. The severe-wind (potentially exceeding 75 mph) threat associated with this small MCS is expected to spread towards parts of southwest NE and northwest KS. Any embedded supercells or discrete cells along the periphery of the cluster will also remain capable of producing large hail, given the favorable thermodynamic environment and relatively elongated hodographs. Longevity of this cluster into late tonight is uncertain, due to increasing MLCINH and generally modest large-scale ascent. Some severe potential could spread as far as west-central/southwest KS before diminishing. Parts of the Mid-Atlantic/Northeast Scattered strong to locally severe storms are ongoing this evening from the northern Mid-Atlantic into parts of the Northeast. While substantial convective overturning has occurred, a corridor of moderate MLCAPE remains in place from northern VA into eastern PA and southeast NE. A short-term threat for locally damaging wind and perhaps marginal hail may continue before storms generally weaken by late evening. See MCD 2157 for more information. West-central MT High-based convection is ongoing early this evening across parts of west-central MT. Weak buoyancy will continue to hamper storm intensity, but the favorable lapse rate environment will continue to support potential for strong to severe gusts. See MCD 2158 for more information. Parts of south-central TX Scattered storms across south-central TX are ongoing near a southward-moving composite outflow. These storms may be capable of producing localized damaging gusts through dusk, before weakening with the onset of nocturnal cooling/stabilization.