Alert archive / Wisconsin / Flash Flood Warnings in 2018

Flash Flood Warning 10, NWS Duluth, MN

June 17, 2018Ashland County, Bayfield County, Iron County, Wisconsin

NWS Duluth, MN issued this flash flood warning at Jun 17, 2018, 4:23 PM CDT for Ashland County, Bayfield County, Iron 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: Jun 17, 2018, 4:23 PM CDT (21:23 UTC)
Expired: Jun 17, 2018, 7:15 PM CDT
In force: 3 hr
Issued by: NWS Duluth, MN
Area: Storm-based polygon
Flood severity: None

Counties Ashland County, WI, Bayfield County, WI, Iron County, WI

The radar

The Duluth radar (KDLH), 120 km from the middle of the area, began a volume at 21:21 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, 9.4 hours before the alert went out and 288 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1067 J/kg
Mixed-layer CIN: -128 J/kg
Mixed-layer LCL: 1089 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 181 m²/s²
0-3 km storm-relative helicity: 175 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.4

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 Jun 17, 3:50 PM CDT, 33 minutes earlier.

Area forecast discussion, Jun 17, 3:50 PM CDT, 33 minutes before

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Hazardous weather outlook, Jun 17, 12:11 PM CDT, 4 hours 12 minutes before

Hazardous Weather Outlook
National Weather Service Duluth MN
1211 PM CDT Sun Jun 17 2018

MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-181100-
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-
1211 PM CDT Sun Jun 17 2018

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

.DAY ONE...This afternoon and Tonight

The potential for flooding and severe thunderstorms will continue
across the Northland today and tonight.

A Flash Flood Watch remains in effect for northwest Wisconsin and
parts of northern Minnesota. Thunderstorms will be on the increase
through the afternoon and evening and decrease later tonight.
Heavy rain will again be possible, especially across the already
hard hit areas of northwest Wisconsin.

Severe thunderstorms will also be possible this afternoon through
the evening, especially in an area from east central Minnesota
into northern Wisconsin. Large hail, damaging winds, and a tornado
will all be possible.

Flash Flood watches and Flood warnings are in effect for portions
of the Northland.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Thunderstorms are possible across northwest Wisconsin on Monday
morning. Thunderstorms will again be possible from Friday into
Sunday.

.SPOTTER INFORMATION STATEMENT...

Skywarn Spotters may be needed this afternoon into the evening.

LSZ121-140>148-181100-
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-
1211 PM CDT Sun Jun 17 2018

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

.DAY ONE...This afternoon and Tonight

Thunderstorms are possible this morning and again this afternoon
and tonight. Some storms may be strong to severe with large hail,
gusty winds, and frequent lightning.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

The probability for widespread hazardous weather is low.

Melde

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

In the hours before

Local storm report, Jun 17, 3:35 PM CDT, 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
335 PM CDT SUN JUN 17 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0143 PM     HEAVY RAIN       3 E PAYNE               47.10N 92.53W
06/17/2018  M3.00 INCH       ST. LOUIS          MN   PUBLIC

            TOTAL RAINFALL ACCUMULATION SINCE 12 PM
            YESTERDAY.

&&

WL

Local storm report, Jun 17, 3:36 PM CDT, 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
336 PM CDT SUN JUN 17 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1049 AM     HEAVY RAIN       4 E ISLAND LAKE         47.00N 92.11W
06/17/2018  M1.23 INCH       ST. LOUIS          MN   PUBLIC

&&

WL

Local storm report, Jun 17, 3:38 PM CDT, 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
338 PM CDT SUN JUN 17 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0329 PM     HAIL             2 ESE BENNETT           46.43N 91.81W
06/17/2018  E0.50 INCH       DOUGLAS            WI   PUBLIC

            REPORT RELAYED VIA MPING.

&&

WL

Special weather statement, Jun 17, 3:39 PM CDT, 44 minutes before

Special Weather Statement
National Weather Service Duluth MN
339 PM CDT SUN JUN 17 2018

WIZ002-003-172100-
Bayfield-Ashland-
339 PM CDT SUN JUN 17 2018

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN BAYFIELD
AND NORTHWESTERN ASHLAND COUNTIES INCLUDING ALL OF THE APOSTLE
ISLANDS...

At 339 PM CDT, strong thunderstorms were along a line extending from
11 miles north of Sand Island, to Sand Bay, to 9 miles south of
Cornucopia, and moving east at 45 mph.

Wind gusts up to 50 mph, half-inch hail, torrential rainfall, and
frequent cloud to ground lightning can be expected with these storms.

Locations impacted include...
Ashland, Washburn, Barksdale, Bayfield, La Pointe, Sand Island,
Cornucopia, Madeline Island, Bayfield Peninsula Sea Caves, Odanah,
Sand Bay, Red Cliff, Herbster, Big Bay State Park, Stockton Island,
New Odanah, Apostle Islands National Lake Shore, Red Cliff
Reservation, Outer Island, and Bad River Reservation.

Seek shelter inside a sturdy building and away from windows until
these storms pass. Get off area lakes and seek shelter on shore in a
sturdy shelter or a hard-topped vehicle.

LAT...LON 4701 9036 4694 9046 4692 9039 4687 9042
      4673 9072 4661 9046 4658 9048 4666 9137
      4691 9117 4692 9108 4696 9109 4702 9100
      4704 9094 4702 9083 4711 9075 4709 9067
      4711 9056 4705 9051 4710 9047 4709 9035
TIME...MOT...LOC 2039Z 268DEG 40KT 4714 9090 4692 9089 4672 9110

 Miller

Local storm report, Jun 17, 4:09 PM CDT, 14 minutes before

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Special weather statement, Jun 17, 4:22 PM CDT, 1 minute before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 16, 9:12 PM CDT	Areal Flood Advisory	DLH	Saint Louis	3 hr
Jun 16, 9:58 PM CDT	Special Weather Statement	DLH	Carlton	17 min
Jun 16, 10:09 PM CDT	Special Weather Statement	DLH	Cass	36 min
Jun 16, 10:19 PM CDT	Special Marine Warning	DLH		41 min
Jun 16, 10:20 PM CDT	Special Weather Statement	DLH	Aitkin, Carlton	10 min
Jun 16, 10:46 PM CDT	Special Weather Statement	DLH	Aitkin, Carlton, Cass, Crow Wing	29 min
Jun 16, 10:50 PM CDT	Special Weather Statement	DLH	Aitkin, Carlton, Crow Wing	25 min
Jun 16, 11:06 PM CDT	Flash Flood Warning	DLH	Aitkin, Carlton, Pine	5 hr
Jun 16, 11:11 PM CDT	Flash Flood Warning	DLH	Cass, Crow Wing	4 hr
Jun 16, 11:24 PM CDT	Special Weather Statement	DLH	Carlton	21 min
Jun 17, 12:11 AM CDT	Flash Flood Warning Emergency	DLH	Carlton, Pine	5 hr
Jun 17, 3:17 AM CDT	Areal Flood Advisory	DLH	Cass, Crow Wing	3 hr
Jun 17, 3:59 AM CDT	Areal Flood Warning	DLH	Aitkin, Carlton, Pine	3 hr
Jun 17, 5:02 AM CDT	Areal Flood Warning	DLH	Carlton, Pine	48 hr
Jun 17, 7:28 AM CDT	Areal Flood Warning	DLH	Aitkin, Carlton, Pine	4 days
Jun 17, 11:36 AM CDT	Special Weather Statement	DLH	Crow Wing	9 min
Jun 17, 11:57 AM CDT	Special Weather Statement	DLH	Crow Wing	18 min
Jun 17, 12:18 PM CDT	Special Weather Statement	DLH	Aitkin	12 min
Jun 17, 12:30 PM CDT	Severe Thunderstorm Warning	DLH	Aitkin, Carlton	30 min
Jun 17, 12:33 PM CDT	Special Weather Statement	DLH	Crow Wing	12 min
Jun 17, 12:43 PM CDT	Special Weather Statement	DLH	Crow Wing	17 min
Jun 17, 1:01 PM CDT	Severe Thunderstorm Warning	DLH	Aitkin, Carlton, Saint Louis	29 min
Jun 17, 1:09 PM CDT	Severe Thunderstorm Warning	DLH	Aitkin, Cass, Crow Wing	36 min
Jun 17, 1:32 PM CDT	Severe Thunderstorm Warning	DLH	Carlton, Saint Louis	43 min
Jun 17, 1:46 PM CDT	Special Weather Statement	DLH	Aitkin	14 min
Jun 17, 1:47 PM CDT	Special Weather Statement	DLH		13 min
Jun 17, 1:53 PM CDT	Special Marine Warning	DLH		67 min
Jun 17, 1:53 PM CDT	Severe Thunderstorm Warning	DLH	Saint Louis	22 min
Jun 17, 2:05 PM CDT	Severe Thunderstorm Warning	DLH	Aitkin, Carlton, Pine	25 min
Jun 17, 2:16 PM CDT	Severe Thunderstorm Warning	DLH	Carlton, Saint Louis	29 min
Jun 17, 2:23 PM CDT	Special Weather Statement	DLH	Lake	22 min
Jun 17, 2:25 PM CDT	Severe Thunderstorm Warning	DLH	Carlton, Saint Louis	35 min
Jun 17, 2:29 PM CDT	Severe Thunderstorm Warning	DLH	Carlton, Pine	31 min
Jun 17, 2:41 PM CDT	Areal Flood Advisory	DLH	Saint Louis	2 hr
Jun 17, 2:51 PM CDT	Areal Flood Advisory	DLH	Lake, Saint Louis	114 min
Jun 17, 3:00 PM CDT	Special Marine Warning	DLH		60 min
Jun 17, 3:01 PM CDT	Severe Thunderstorm Warning	DLH	Pine	44 min
Jun 17, 3:31 PM CDT	Special Marine Warning	DLH		79 min
Jun 16, 8:41 PM CDT	Special Weather Statement	DLH	Burnett	19 min
Jun 16, 8:59 PM CDT	Special Weather Statement	DLH	Douglas	16 min
Jun 16, 9:22 PM CDT	Severe Thunderstorm Warning	DLH	Burnett, Douglas, Washburn	23 min
Jun 16, 10:02 PM CDT	Severe Thunderstorm Warning	DLH	Burnett, Douglas, Washburn	28 min
Jun 16, 10:25 PM CDT	Special Weather Statement	DLH	Ashland	20 min
Jun 16, 10:39 PM CDT	Flash Flood Warning	DLH	Ashland, Bayfield, Burnett, Douglas, Iron, Sawyer and 1 more	8 hr
Jun 16, 11:46 PM CDT	Flash Flood Warning Emergency	DLH	Bayfield	5 hr
Jun 17, 4:33 AM CDT	Areal Flood Warning	DLH	Burnett, Price, Sawyer, Washburn	3 hr
Jun 17, 6:27 AM CDT	Areal Flood Warning	DLH	Ashland, Bayfield, Douglas	48 hr
Jun 17, 2:53 PM CDT	Severe Thunderstorm Warning	DLH	Douglas	22 min
Jun 17, 3:17 PM CDT	Special Weather Statement	DLH	Bayfield	13 min
Jun 17, 3:36 PM CDT	Severe Thunderstorm Warning	DLH	Bayfield, Douglas, Sawyer, Washburn	24 min
Jun 17, 3:39 PM CDT	Special Weather Statement	DLH	Bayfield	21 min
Jun 17, 3:42 PM CDT	Severe Thunderstorm Warning	DLH	Burnett, Washburn	33 min
Jun 17, 3:47 PM CDT	Flash Flood Warning	DLH	Bayfield, Douglas	3 hr
Jun 17, 3:57 PM CDT	Severe Thunderstorm Warning	DLH	Ashland, Bayfield, Iron, Price, Sawyer	78 min
Jun 17, 4:14 PM CDT	Severe Thunderstorm Warning	DLH	Sawyer, Washburn	31 min
Jun 17, 4:22 PM CDT	Special Weather Statement	DLH	Burnett	23 min
Jun 17, 4:34 PM CDT	Special Weather Statement	DLH	Sawyer	11 min
Jun 17, 4:48 PM CDT	Special Weather Statement	DLH	Sawyer, Washburn	27 min
Jun 17, 4:59 PM CDT	Areal Flood Advisory	DLH	Bayfield, Sawyer	3 hr
Jun 17, 5:02 PM CDT	Special Weather Statement	DLH	Price	13 min
Jun 17, 5:15 PM CDT	Special Weather Statement	DLH	Sawyer	30 min
Jun 17, 5:17 PM CDT	Special Weather Statement	DLH	Iron	28 min
Jun 17, 5:43 PM CDT	Special Weather Statement	DLH	Price	17 min
Jun 17, 6:03 PM CDT	Special Weather Statement	DLH	Price	12 min
Jun 17, 6:17 PM CDT	Special Weather Statement	DLH	Price	13 min
Jun 17, 6:33 PM CDT	Special Weather Statement	DLH	Price	12 min

Nearby

Flash Flood Warnings in Wisconsin, 2018 Every flash flood warning in 2018

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.