Steelhead Alley Storm Watch

Live active storms, NWS alerts, and the next 5-day rainfall outlook — followed by the historical archive of past storm events.

Active & Forecasted

Updates every ~15 min

🌩️ New York (Lake Ontario) — Moderate

Explorer Map →

1 river rising 3.4×+ in 6h

1 rivers affected

🌧️ Forecasted Rain

Rain likely Thursday — 58% chance per NWS (Showers And Thunderstorms Likely). 31 rivers in the precipitation window.

Storm Archive

Published past storm events with rainfall, flow, and forecast accuracy.

Moderate Jul 23, 2026 09:49 - Jul 24, 2026 04:04 (18.3h)

Thu July 23-24 New York (Lake Ontario) & Ohio Storm

Jul 23-24 Alley front -- 0.0" delivered, Genesee River peaked +14hrs as expected.

Max Rain: 0.00"

Forecast Accuracy: Grade A

Buckets: NY · Ontario, OH · Erie

Moderate Jul 14, 2026 07:18 - Jul 16, 2026 07:18 (48.0h)

Tue July 14-16 New York (Lake Ontario) Storm

Jul 14-16 New front -- 0.0" delivered, Genesee River peaked +14hrs as expected.

Max Rain: 0.00"

Forecast Accuracy: Grade B

Buckets: NY · Ontario

Moderate Jul 4, 2026 00:00 - Jul 4, 2026 02:00 (2.0h)

Sat July 4 Alley Storm

Jul 4 Alley front -- 0.4" delivered, Johnson Creek peaked +4hrs as expected.

Max Rain: 0.42"

Forecast Accuracy: Grade A

Buckets: Steelhead Alley

Moderate Jul 4, 2026 00:00 - Jul 4, 2026 01:00 (1.0h)

Sat July 4 New York (Lake Ontario) & Ohio & Pennsylvania Storm

Jul 4 Alley front -- 0.4" delivered, Johnson Creek peaked +14hrs as expected.

Max Rain: 0.39"

Forecast Accuracy: Grade N/A

Buckets: NY · Ontario, OH · Erie, PA · Erie

Moderate Jul 2, 2026 23:00 - Jul 3, 2026 01:00 (2.0h)

Thu July 2-3 New York (Lake Ontario) & Ohio & Pennsylvania Storm

Jul 2-3 Alley front -- 0.4" delivered, Johnson Creek peaked +22hrs as expected.

Max Rain: 0.43"

Forecast Accuracy: Grade A

Buckets: NY · Ontario, OH · Erie, PA · Erie

Moderate Jul 2, 2026 23:00 - Jul 3, 2026 01:00 (2.0h)

Thu July 2-3 New York (Lake Ontario) & Ohio Storm

Jul 2-3 Alley front -- 0.4" delivered, Johnson Creek peaked +14hrs as expected.

Max Rain: 0.43"

Forecast Accuracy: Grade A

Buckets: NY · Ontario, OH · Erie

Severe Jul 1, 2026 23:00 - Jul 2, 2026 01:00 (2.0h)

Wed July 1-2 New York (Lake Erie) & New York (Lake Ontario) & Ohio Storm

Jul 1-2 severe storm -- 1.4" of rain across Steelhead Alley. Lake Erie tribs out through Thursday.

Max Rain: 1.44"

Forecast Accuracy: Grade A

Buckets: NY · Erie, NY · Ontario, OH · Erie

Major Jun 30, 2026 17:00 - Jul 1, 2026 06:00 (13.0h)

Tue June 30 - July 1 New York (Lake Erie) & New York (Lake Ontario) & Ohio Storm

Jun 30-Jul 1 alley-wide storm -- 0.8" in 13hrs, Oak Orchard Creek blew out, Salmon River fishable Wednesday.

Max Rain: 0.83"

Forecast Accuracy: Grade A

Buckets: NY · Erie, NY · Ontario, OH · Erie

Severe Jun 25, 2026 11:00 - Jun 26, 2026 09:00 (22.0h)

Thu June 25-26 Alley Storm

Jun 25-26 severe storm -- 1.1" of rain across Steelhead Alley. Lake Erie tribs out through Thursday.

Max Rain: 1.05"

Forecast Accuracy: Grade B

Buckets: Steelhead Alley

Severe Jun 14, 2026 14:00 - Jun 15, 2026 07:00 (17.0h)

Sun June 14-15 Alley Storm

Jun 14-15 superstorm -- 2.0" of rain across Steelhead Alley. Lake Erie tribs out through Thursday.

Max Rain: 1.99"

Forecast Accuracy: Grade C

Buckets: Steelhead Alley

Severe Jun 9, 2026 20:00 - Jun 12, 2026 12:00 (64.0h)

Tue June 9-12 Alley Storm

Jun 9-12 superstorm -- 9.5" of rain across Steelhead Alley. Lake Erie tribs out through Friday.

Max Rain: 9.54"

Forecast Accuracy: Grade B

Buckets: Steelhead Alley

Moderate Jun 6, 2026 12:00 - Jun 7, 2026 04:00 (16.0h)

Sat June 6-7 New York (Lake Ontario) & Ohio Storm

Jun 6-7 Alley front -- 0.4" delivered, Sandy Creek (Adams) peaked +4hrs as expected.

Max Rain: 0.43"

Forecast Accuracy: Grade B

Buckets: NY · Ontario, OH · Erie