Flash Flood Warning
2026-09-12T20:00:00-04:00

At 534 PM EDT, local law enforcement reported flash flooding across the warned area. Between 1.5 and 2.5 inches of rain have fallen. Additional rainfall amounts of 0.5 to 1 inch are possible in the warned area. Flash flooding is already occurring. HAZARD...Flash flooding caused by heavy rain. SOURCE...Law enforcement reported. 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... Indiana, Rural Valley, West Lebanon, Dayton, Chevy Chase Heights, Rossiter, Ernest, Marion Center, Elderton, Creekside, Plumville, Shelocta, Atwood, Dixonville, Jacksonville, Smicksburg and Rochester Mills.

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Pennsylvania

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Flash Flood Warning
Until 2026-09-12T20:00:00-04:00 • National Weather Service
At 534 PM EDT, local law enforcement reported flash flooding across the warned area. Between 1.5 and 2.5 inches of rain have fallen. Additional rainfall amounts of 0.5 to 1 inch are possible in the warned area. Flash flooding is already occurring. HAZARD...Flash flooding caused by heavy rain. SOURCE...Law enforcement reported. 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... Indiana, Rural Valley, West Lebanon, Dayton, Chevy Chase Heights, Rossiter, Ernest, Marion Center, Elderton, Creekside, Plumville, Shelocta, Atwood, Dixonville, Jacksonville, Smicksburg and Rochester Mills.

LITTLE MAHONING CREEK AT MCCORMICK, PA

Realtime Data • Report • Conditions

60

Discharge (cfs)

2.3

Gauge Height (ft)

USGS 03034500

Streamflow discharge was last observed at 60 cfs, and a gauge height of 2.33 feet. With the % decrease since yesterday, the streamflow average over the past 10 days is 111 .

Weather today, Tomorrow,

Flow is provided by precipitation, snowmelt, and groundwater. There are no major dams or tributaries that significantly affect this stream's flow. Seasonal trends show increased flow in the spring due to snowmelt and precipitation, while summer and fall tend to have lower flow. One interesting fact is that the stream is home to a diverse population of aquatic animals, including crayfish, hellbenders, and various fish species. Overall, the Little Mahoning Creek stream gauge provides important information about the hydrology of this small but ecologically important stream.

September 12, 2026

Elevation	1,173.0 ft
Last Updated
Gage height, ft	2.33 ft
Stream water level elevation above NAVD 1988, in ft	1166.23 ft
Temperature, water, °C	19.8 deg C
Streamflow, ft³/s	59.6 ft3/s
Percent of Normal	132%
Year Over Year Average	45 cfs
24hr Flow Prediction	cfs
Maximum Recorded	4,310 cfs
Geolocation	40.84, -79.11

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Little Mahoning Creek At Mccormick, Pa Realtime Data

LITTLE MAHONING CREEK AT MCCORMICK, PA

Realtime Data • Report • Conditions

60

Discharge (cfs)

2.3

Gauge Height (ft)

September 12, 2026

Seasonal Comparison

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Little Mahoning Creek At Mccormick, Pa Realtime Data

LITTLE MAHONING CREEK AT MCCORMICK, PA

Realtime Data • Report • Conditions

60

Discharge (cfs)

2.3

Gauge Height (ft)

September 12, 2026

Seasonal Comparison

Oceanic Nino Index

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