Alert archive / Minnesota / Flash Flood Warnings in 2022

Flash Flood Warning 11, NWS Duluth, MN

August 18, 2022Cass County, Itasca County, Minnesota

NWS Duluth, MN issued this flash flood warning at Aug 18, 2022, 12:44 AM CDT for Cass County, Itasca County, Minnesota. It was in force for 5 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
Aug 18, 2022, 12:44 AM CDT (05:44 UTC)
Expired
Aug 18, 2022, 5:45 AM CDT
In force
5 hr
Issued by
NWS Duluth, MN
Area
Storm-based polygon
Flood severity
None

Counties Cass County, MN, Itasca County, MN

The radar

The Duluth radar (KDLH), 141 km from the middle of the area, began a volume at 05:43 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.

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 Aug 17, 6:52 PM CDT, 5 hours 52 minutes earlier.

Area forecast discussion, Aug 17, 6:52 PM CDT, 5 hours 52 minutes before
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Hazardous weather outlook, Aug 17, 3:24 PM CDT, 9 hours 20 minutes before
Hazardous Weather Outlook
National Weather Service Duluth MN
324 PM CDT Wed Aug 17 2022

MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-182030-
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-
324 PM CDT Wed Aug 17 2022

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

.DAY ONE...This afternoon and Tonight

Scattered to numerous thunderstorms are possible into this evening.
Severe weather is not expected but some storms could contain
small hail, heavy rainfall, and briefly gusty winds. Localized
heavy rainfall could lead to localized flash flooding.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Scattered showers and thunderstorms will continue through
Saturday evening. Chances for more widespread storms and rainfall
on Thursday and Friday. Occasional strong storms and locally heavy
rainfall will be possible.

.SPOTTER INFORMATION STATEMENT...

Skywarn spotter activation is not anticipated this afternoon or
tonight.

LSZ121-140>148-150-182030-
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-
324 PM CDT Wed Aug 17 2022

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

.DAY ONE...This afternoon and Tonight

Scattered thunderstorms are possible into this evening. Storms
should not be severe but frequent lightning, small hail, heavy
rainfall, and briefly gusty winds are possible with the strongest
storms that may develop.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Chances for scattered showers and thunderstorms continues through
Saturday. Occasional strong storms and heavy rainfall will be
possible.

BJH

More information may be obtained at the following web address:
http://www.weather.gov/duluth (all lower case)

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 17, 7:34 PM CDTAreal Flood AdvisoryDLHCarlton, Saint Louis17 hr
Aug 18, 12:08 AM CDTAreal Flood AdvisoryDLHCass, Itasca2 hr
Aug 18, 12:57 AM CDTAreal Flood AdvisoryDLHLake11 hr
Aug 18, 1:14 AM CDTAreal Flood AdvisoryDLHAitkin, Itasca3 hr
Aug 18, 2:13 AM CDTFlash Flood WarningDLHAitkin, Cass, Itasca5 hr
Aug 18, 2:55 AM CDTAreal Flood AdvisoryDLHCass, Itasca3 hr
Aug 18, 5:44 AM CDTAreal Flood AdvisoryDLHCass, Itasca6 hr
Aug 18, 7:13 AM CDTAreal Flood WarningDLHAitkin, Cass, Itasca6 hr
Aug 18, 4:19 PM CDTAreal Flood AdvisoryDLHKoochiching, Saint Louis6 hr
Aug 18, 5:56 PM CDTAreal Flood AdvisoryDLHKoochiching, Saint Louis4 hr
Aug 18, 10:55 AM CDTAreal Flood AdvisoryDLHSawyer6 hr

Nearby

Flash Flood Warnings in Minnesota, 2022Every flash flood warning in 2022

Sources

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