Alert archive / Wisconsin / Flash Flood Warnings in 2023

Flash Flood Warning 5, NWS Duluth, MN

July 27, 2023Pine County, Minnesota; Burnett County, Washburn County, Wisconsin

NWS Duluth, MN issued this flash flood warning at Jul 27, 2023, 7:48 PM CDT for Pine County, Minnesota; Burnett County, Washburn County, Wisconsin. It was in force for 4 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 27, 2023, 7:48 PM CDT (00:48 UTC)
Expired
Jul 27, 2023, 11:45 PM CDT
In force
4 hr
Issued by
NWS Duluth, MN
Area
Storm-based polygon
Flood severity
None

Counties Pine County, MN, Burnett County, WI, Washburn County, WI

The radar

The Duluth radar (KDLH), 98 km from the middle of the area, began a volume at 00:47 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 00:00Z, 0.8 hours before the alert went out and 160 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 00:00Z on 2023-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3091 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 00:00Z on 2023-07-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 81 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
3091 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
1283 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
75 m²/s²
Significant tornado parameter
0.7
Supercell composite
4.5

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Duluth, MN wrote its last area forecast discussion before this flash flood warning went out at Jul 27, 6:57 PM CDT, 51 minutes earlier.

Area forecast discussion, Jul 27, 6:57 PM CDT, 51 minutes before
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Hazardous weather outlook, Jul 27, 11:45 AM CDT, 8 hours 3 minutes before
Hazardous Weather Outlook...CORRECTED
National Weather Service Duluth MN
1145 AM CDT Thu Jul 27 2023

MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-281645-
Koochiching-North St. Louis-Northern Cook/Northern Lake-
North Itasca-Central St. Louis-Southern Lake/North Shore-
Southern Cook/North Shore-North Cass-South Itasca-South Cass-
Crow Wing-Northern Aitkin-South Aitkin-Carlton/South St. Louis-
Pine-Douglas-Bayfield-Ashland-Iron-Burnett-Washburn-Sawyer-Price-
1145 AM CDT Thu Jul 27 2023

This Hazardous Weather Outlook is for portions of northeast
Minnesota and northwest Wisconsin.

.DAY ONE...This afternoon and Tonight

Hot temperatures are forecast again today. Heat indices of 90 to
100 degrees are forecast from the Brainerd Lakes towards Hinckley.

Severe storms are possible this afternoon and evening. Storms may
be capable of producing damaging winds to around 75 mph and large
hail to tennis ball size. The area where widespread severe storms
are the most likely is from Aitkin to the Twin Ports and
southeast across northwest Wisconsin and the I-35 corridor.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

There is a slight chance of thunderstorms Friday and again at
times next week. At this time a few strong storms are possible,
but widespread severe weather is not expected Friday and next
week.

.SPOTTER INFORMATION STATEMENT...

Skywarn spotters are encouraged to report hail of any size, wind
damage, and rainfall amounts to the National Weather Service.

LSZ121-140>148-150-281645-
Bayfield to Oak Point WI-Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-Two Harbors to Duluth MN-
Duluth MN to Port Wing WI-Port Wing to Sand Island WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
1145 AM CDT Thu Jul 27 2023

This Hazardous Weather Outlook is for portions of Lake Superior
and the Nearshore waters of western Lake Superior.

.DAY ONE...This afternoon and Tonight

There is a chance of strong to severe thunderstorms today. Storms
may be capable of producing large hail to tennis ball size and
gusty winds of 45 to 65 knots.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Northeast winds on Friday of 5 to 15 knots with gusts to 20 knots
will build waves to 2 to 4 feet on the waters of the southwest
arm of Lake Superior.

There will be several chances of thunderstorms next week.

Levens/Huyck

More information may be obtained at the following web address:
http://www.weather.gov/duluth

In the hours before

Local storm report, Jul 27, 7:08 PM CDT, 40 minutes before
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Local storm report, Jul 27, 7:22 PM CDT, 26 minutes before
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Local storm report, Jul 27, 7:24 PM CDT, 24 minutes before
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Local storm report, Jul 27, 7:27 PM CDT, 21 minutes before
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Local storm report, Jul 27, 7:30 PM CDT, 18 minutes before
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Local storm report, Jul 27, 7:42 PM CDT, 6 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 7:24 PM CDTSevere Thunderstorm WarningDLHPine23 min
Jul 28, 6:42 AM CDTMarine Dense Fog AdvisoryDLH3 hr
Jul 28, 9:16 AM CDTSmall Craft AdvisoryDLH10 hr
Jul 28, 9:42 AM CDTBeach Hazards StatementDLHCarlton, Saint Louis9 hr
Jul 27, 7:31 PM CDTFlash Flood WarningDLHPrice4 hr
Jul 27, 7:46 PM CDTSevere Thunderstorm WarningDLHPrice39 min
Jul 27, 8:59 PM CDTAreal Flood AdvisoryDLHBayfield, Sawyer6 hr
Jul 28, 6:34 PM CDTSevere Thunderstorm WarningDLHPrice41 min

Nearby

Flash Flood Warnings in Wisconsin, 2023Flash Flood Warnings in Minnesota, 2023Every flash flood warning in 2023

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.