Alert archive / Wisconsin / Flash Flood Warnings in 2025

Flash Flood Warning 9, NWS Duluth, MN

July 15, 2025Bayfield County, Douglas County, Wisconsin

NWS Duluth, MN issued this flash flood warning at Jul 15, 2025, 6:55 PM CDT for Bayfield County, Douglas County, Wisconsin. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 15, 2025, 6:55 PM CDT (23:55 UTC)
Expired
Jul 15, 2025, 10:00 PM CDT
In force
3 hr
Issued by
NWS Duluth, MN
Area
Storm-based polygon
Damage threat
Considerable
Flood severity
None

Counties Bayfield County, WI, Douglas County, WI

The radar

The Duluth radar (KDLH), 60 km from the middle of the area, began a volume at 23:57 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.9 hours before the alert went out and 248 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2025-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1199 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2025-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 256 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1199 J/kg
Mixed-layer CIN
-196 J/kg
Mixed-layer LCL
1415 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
256 m²/s²
0-3 km storm-relative helicity
267 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The office that day

Everything else NWS Duluth, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 15, 3:12 AM CDTAreal Flood AdvisoryDLHKoochiching, Saint Louis5 hr
Jul 15, 3:23 AM CDTSevere Thunderstorm WarningDLHSaint Louis52 min
Jul 15, 3:53 AM CDTSmall Craft AdvisoryDLH42 hr
Jul 15, 4:38 AM CDTFlood WatchDLHAitkin, Carlton, Cook, Lake, Pine, Saint Louis19 hr
Jul 15, 4:57 AM CDTAreal Flood AdvisoryDLHSaint Louis4 hr
Jul 15, 7:59 AM CDTAreal Flood AdvisoryDLHKoochiching, Saint Louis4 hr
Jul 15, 8:21 AM CDTSevere Thunderstorm Warning Considerable damage threatDLHPine27 min
Jul 15, 10:45 AM CDTSpecial Marine WarningDLH60 min
Jul 15, 2:12 PM CDTSpecial Marine WarningDLH63 min
Jul 15, 3:22 PM CDTAreal Flood AdvisoryDLHLake, Saint Louis7 hr
Jul 15, 4:49 PM CDTAreal Flood AdvisoryDLHCarlton, Saint Louis6 hr
Jul 15, 5:25 PM CDTAreal Flood AdvisoryDLHCarlton, Pine6 hr
Jul 15, 5:40 PM CDTAreal Flood AdvisoryDLHPine5 hr
Jul 15, 6:36 PM CDTAreal Flood AdvisoryDLHLake, Saint Louis4 hr
Jul 15, 2:14 PM CDTSevere Thunderstorm WarningDLHBayfield46 min
Jul 15, 2:35 PM CDTSevere Thunderstorm WarningDLHAshland, Bayfield, Iron40 min
Jul 15, 2:51 PM CDTAreal Flood AdvisoryDLHAshland, Bayfield, Douglas3 hr
Jul 15, 3:12 PM CDTSevere Thunderstorm WarningDLHAshland, Iron33 min
Jul 15, 3:49 PM CDTSevere Thunderstorm WarningDLHBayfield, Douglas21 min
Jul 15, 4:33 PM CDTFlash Flood WarningDLHBayfield3 hr
Jul 15, 5:16 PM CDTSevere Thunderstorm WarningDLHWashburn44 min
Jul 15, 5:51 PM CDTFlash Flood WarningDLHAshland, Bayfield, Douglas5 hr
Jul 15, 6:14 PM CDTFlash Flood WarningDLHBurnett, Douglas, Washburn4 hr
Jul 15, 6:54 PM CDTSevere Thunderstorm WarningDLHAshland, Sawyer51 min

Nearby

Flash Flood Warnings in Wisconsin, 2025Every flash flood warning in 2025

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.