Overview Realtime Historical Map View
Heat Advisory
2026-07-15T20:00:00-04:00

* WHAT...Heat index values up to 100 expected. * WHERE...Portions of east central Ohio, northwest, southwest, and western Pennsylvania, and northern and the northern panhandle of West Virginia. * WHEN...From noon to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Allegheny River At Parker, Pa Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011
01-01 28525.0
01-02 28658.33
01-03 28116.67
01-04 26096.67
01-05 26783.33
01-06 23623.33
01-07 21921.82
01-08 21172.73
01-09 19107.27
01-10 20138.18
01-11 23372.0
01-12 23560.0
01-13 26381.82
01-14 27427.27
01-15 26418.18
01-16 24509.09
01-17 22665.45
01-18 21594.55
01-19 22000.0
01-20 21720.0
01-21 19890.91
01-22 17750.91
01-23 17193.0
01-24 20218.0
01-25 24292.22
01-26 32568.89
01-27 29030.0
01-28 33147.14
01-29 34107.14
01-30 27582.5
01-31 25357.5
02-01 23310.0
02-02 29514.44
02-03 29442.0
02-04 31152.0
02-05 21560.0
02-06 21098.75
02-07 20816.25
02-08 24167.78
02-09 22295.56
02-10 18808.89
02-11 20258.75
02-12 18412.22
02-13 18674.44
02-14 17880.0
02-15 16711.11
02-16 19202.5
02-17 18555.0
02-18 16025.0
02-19 16887.5
02-20 20730.0
02-21 20377.0
02-22 20190.0
02-23 21780.91
02-24 23654.55
02-25 22605.0
02-26 25076.67
02-27 25079.0
02-28 26370.0
02-29 25425.0
03-01 27480.0
03-02 29672.73
03-03 26881.67
03-04 26030.0
03-05 25333.33
03-06 24640.0
03-07 25733.33
03-08 25698.33
03-09 23682.5
03-10 22594.17
03-11 23130.0
03-12 23783.33
03-13 25350.0
03-14 22958.33
03-15 22633.33
03-16 22483.33
03-17 20941.67
03-18 19683.33
03-19 19385.71
03-20 20653.85
03-21 21525.71
03-22 19421.43
03-23 18152.0
03-24 17564.0
03-25 16812.67
03-26 16689.33
03-27 16482.0
03-28 17384.0
03-29 18305.33
03-30 18886.67
03-31 20041.43
04-01 22374.0
04-02 23636.0
04-03 22832.67
04-04 25930.67
04-05 25999.33
04-06 25866.67
04-07 24402.67
04-08 24611.33
04-09 26435.0
04-10 25253.33
04-11 24276.0
04-12 27473.57
04-13 28437.86
04-14 25111.43
04-15 23810.0
04-16 23352.31
04-17 23668.46
04-18 22690.0
04-19 21078.46
04-20 21043.85
04-21 20213.57
04-22 22071.43
04-23 19445.71
04-24 18123.57
04-25 16591.54
04-26 16347.86
04-27 18831.43
04-28 17460.71
04-29 16145.0
04-30 16060.71
05-01 20360.67
05-02 19598.57
05-03 19952.86
05-04 21854.67
05-05 23292.0
05-06 22312.67
05-07 23628.0
05-08 19892.86
05-09 20311.33
05-10 20569.33
05-11 20551.33
05-12 18208.67
05-13 18157.33
05-14 19425.33
05-15 19554.29
05-16 19676.43
05-17 21372.14
05-18 18204.67
05-19 16756.0
05-20 16006.43
05-21 15572.0
05-22 17631.43
05-23 18078.67
05-24 16781.33
05-25 15655.33
05-26 15042.67
05-27 14454.0
05-28 13172.67
05-29 14866.67
05-30 14262.0
05-31 13915.33
06-01 12771.33
06-02 12762.67
06-03 12639.33
06-04 11158.0
06-05 10305.0
06-06 10263.33
06-07 9667.14
06-08 9914.67
06-09 9624.0
06-10 10111.33
06-11 10166.0
06-12 9451.43
06-13 8971.43
06-14 10160.71
06-15 12839.33
06-16 11556.0
06-17 13120.0
06-18 12254.0
06-19 14460.71
06-20 14719.29
06-21 13638.57
06-22 14640.0
06-23 11475.71
06-24 11722.14
06-25 12287.86
06-26 13774.29
06-27 12133.57
06-28 13757.14
06-29 14872.86
06-30 12610.71
07-01 12467.14
07-02 13348.57
07-03 12627.86
07-04 11086.43
07-05 9492.0
07-06 9032.0
07-07 8677.86
07-08 9126.43
07-09 8316.43
07-10 8163.33
07-11 7944.67
07-12 8100.0
07-13 7792.86
07-14 8121.33
07-15 7522.14
07-16 7524.29
07-17 7927.86
07-18 10748.57
07-19 10487.69
07-20 11236.15
07-21 9480.71
07-22 8905.71
07-23 8576.43
07-24 7744.29
07-25 7095.71
07-26 7172.14
07-27 7121.43
07-28 7055.0
07-29 6934.29
07-30 6834.29
07-31 6040.71
08-01 5620.0
08-02 4932.14
08-03 4592.14
08-04 4634.29
08-05 4926.43
08-06 4820.0
08-07 5091.43
08-08 5205.38
08-09 4748.46
08-10 4309.23
08-11 4183.57
08-12 4642.86
08-13 5533.57
08-14 6335.71
08-15 6269.29
08-16 6129.23
08-17 5310.0
08-18 5280.83
08-19 5436.92
08-20 6155.38
08-21 5450.0
08-22 6323.33
08-23 5955.0
08-24 5856.92
08-25 6100.77
08-26 6792.14
08-27 5675.71
08-28 5007.14
08-29 5253.57
08-30 4975.71
08-31 4699.29
09-01 4755.71
09-02 4889.29
09-03 4765.71
09-04 4570.0
09-05 4847.86
09-06 4652.86
09-07 4458.57
09-08 4245.71
09-09 4422.14
09-10 5155.0
09-11 6385.71
09-12 5808.57
09-13 5726.43
09-14 5801.43
09-15 6034.29
09-16 5924.29
09-17 5647.86
09-18 5477.14
09-19 5299.29
09-20 5320.0
09-21 4817.14
09-22 4477.69
09-23 4978.57
09-24 5312.14
09-25 5127.86
09-26 5921.43
09-27 6017.14
09-28 6432.86
09-29 7132.14
09-30 7104.62
10-01 6268.46
10-02 5363.08
10-03 5250.0
10-04 5300.77
10-05 6551.43
10-06 6342.14
10-07 6009.29
10-08 6673.57
10-09 6636.92
10-10 6188.57
10-11 6130.0
10-12 5979.29
10-13 5710.0
10-14 5767.86
10-15 6041.54
10-16 6019.29
10-17 6818.57
10-18 7422.14
10-19 7800.0
10-20 7731.43
10-21 7956.92
10-22 9903.57
10-23 10157.14
10-24 9434.29
10-25 9185.71
10-26 9845.71
10-27 9708.57
10-28 11659.29
10-29 13900.71
10-30 16682.14
10-31 17907.14
11-01 19305.71
11-02 19892.86
11-03 19707.86
11-04 18837.86
11-05 15996.15
11-06 16246.15
11-07 17435.38
11-08 15570.77
11-09 14642.31
11-10 14129.23
11-11 13201.54
11-12 14060.0
11-13 15050.77
11-14 13634.29
11-15 13797.14
11-16 15204.29
11-17 14622.86
11-18 13566.15
11-19 15428.46
11-20 17703.33
11-21 14897.14
11-22 14076.15
11-23 15096.43
11-24 12482.31
11-25 13413.85
11-26 14485.0
11-27 14764.29
11-28 15472.86
11-29 15432.14
11-30 15395.0
12-01 16340.71
12-02 16537.14
12-03 16727.14
12-04 16925.0
12-05 16977.14
12-06 17549.23
12-07 19900.0
12-08 19216.43
12-09 18102.86
12-10 17596.43
12-11 19547.14
12-12 18478.57
12-13 16875.0
12-14 15959.23
12-15 15821.54
12-16 14424.62
12-17 15001.54
12-18 16827.5
12-19 16381.54
12-20 18353.33
12-21 17945.0
12-22 23816.92
12-23 27430.77
12-24 25507.69
12-25 25593.85
12-26 26553.85
12-27 25200.0
12-28 29118.18
12-29 25100.0
12-30 29963.64
12-31 29136.36

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index