Alert archive / Minnesota / Special Weather Statements in 2018

Special Weather Statement, NWS Duluth, MN

July 4, 2018Cook County, Minnesota

NWS Duluth, MN issued this special weather statement at Jul 4, 2018, 11:21 AM CDT for Cook County, Minnesota. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 4, 2018, 11:21 AM CDT (16:21 UTC)
Expired
Jul 4, 2018, 11:45 AM CDT
In force
24 min
Issued by
NWS Duluth, MN

County Cook County, MN

The radar

The Duluth radar (KDLH), 176 km from the middle of the area, began a volume at 16:22 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, 4.4 hours before the alert went out and 416 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 2018-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2175 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 2018-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 134 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
2175 J/kg
Mixed-layer CIN
-127 J/kg
Mixed-layer LCL
1013 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
134 m²/s²
0-3 km storm-relative helicity
136 m²/s²
Significant tornado parameter
0.4
Supercell composite
4.1

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 4, 8:48 AM CDT, 2 hours 33 minutes earlier.

Area forecast discussion, Jul 4, 8:48 AM CDT, 2 hours 33 minutes before
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Hazardous weather outlook, Jul 4, 3:55 AM CDT, 7 hours 26 minutes before
Hazardous Weather Outlook
National Weather Service Duluth MN
355 AM CDT Wed Jul 4 2018

MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-050900-
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-
355 AM CDT Wed Jul 4 2018

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

.DAY ONE...Today and Tonight

Strong to severe thunderstorms are possible across northeast
Minnesota and northwest Wisconsin today and this evening,
especially later in the day. Damaging winds, hail, heavy rain, and
lightning will be the main threats. There could be isolated
flooding in areas of central into northeast Minnesota, where a
Flood Watch is in effect through early this evening.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Thunderstorms are possible at various times from Saturday night
through Tuesday night.

.SPOTTER INFORMATION STATEMENT...

Skywarn Spotters may be needed today and this evening to report
hail, wind damage, and rainfall with potentially strong to severe
storms.

LSZ121-140>148-050900-
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-
355 AM CDT Wed Jul 4 2018

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

.DAY ONE...Today and Tonight

Thunderstorms are possible today, mainly this afternoon and
evening. Some storms could be strong to severe.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Thunderstorms are possible at various times from Saturday night
through Tuesday night.

DAP/Grochocinski

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

In the hours before

Special weather statement, Jul 4, 8:55 AM CDT, 2 hours 26 minutes before
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Local storm report, Jul 4, 8:58 AM CDT, 2 hours 23 minutes before
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Special weather statement, Jul 4, 9:48 AM CDT, 1 hour 33 minutes before
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Special weather statement, Jul 4, 10:17 AM CDT, 1 hour 4 minutes before
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Special weather statement, Jul 4, 10:43 AM CDT, 38 minutes before
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Special weather statement, Jul 4, 11:21 AM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 4:33 AM CDTSpecial Weather StatementDLHKoochiching12 min
Jul 4, 4:44 AM CDTSpecial Weather StatementDLHKoochiching16 min
Jul 4, 5:03 AM CDTSpecial Weather StatementDLH12 min
Jul 4, 5:14 AM CDTSpecial Weather StatementDLH16 min
Jul 4, 5:20 AM CDTSpecial Weather StatementDLHKoochiching25 min
Jul 4, 5:28 AM CDTSpecial Weather StatementDLH17 min
Jul 4, 5:43 AM CDTSpecial Weather StatementDLH17 min
Jul 4, 5:46 AM CDTSpecial Weather StatementDLHKoochiching14 min
Jul 4, 6:11 AM CDTSpecial Weather StatementDLHKoochiching19 min
Jul 4, 6:23 AM CDTSpecial Weather StatementDLHKoochiching37 min
Jul 4, 6:28 AM CDTSpecial Weather StatementDLH17 min
Jul 4, 6:41 AM CDTSpecial Weather StatementDLHKoochiching34 min
Jul 4, 6:43 AM CDTSpecial Weather StatementDLHCass, Crow Wing32 min
Jul 4, 6:55 AM CDTSevere Thunderstorm WarningDLHCass, Crow Wing50 min
Jul 4, 6:57 AM CDTSevere Thunderstorm WarningDLHKoochiching48 min
Jul 4, 7:14 AM CDTSpecial Weather StatementDLHItasca, Koochiching31 min
Jul 4, 7:30 AM CDTSpecial Weather StatementDLHAitkin30 min
Jul 4, 7:43 AM CDTSpecial Weather StatementDLHKoochiching32 min
Jul 4, 7:45 AM CDTSpecial Weather StatementDLHItasca15 min
Jul 4, 7:52 AM CDTSpecial Weather StatementDLHAitkin, Crow Wing23 min
Jul 4, 7:56 AM CDTSpecial Weather StatementDLHItasca34 min
Jul 4, 8:13 AM CDTSpecial Weather StatementDLHItasca, Saint Louis32 min
Jul 4, 8:15 AM CDTSpecial Weather StatementDLHAitkin30 min
Jul 4, 8:43 AM CDTSevere Thunderstorm WarningDLHSaint Louis32 min
Jul 4, 8:53 AM CDTSpecial Weather StatementDLHSaint Louis52 min
Jul 4, 8:55 AM CDTSpecial Weather StatementDLHCarlton, Pine50 min
Jul 4, 9:10 AM CDTSevere Thunderstorm WarningDLHLake, Saint Louis50 min
Jul 4, 9:48 AM CDTSpecial Weather StatementDLHLake42 min
Jul 4, 10:17 AM CDTSpecial Weather StatementDLHLake28 min
Jul 4, 10:43 AM CDTSpecial Weather StatementDLHLake32 min
Jul 4, 11:49 AM CDTSpecial Marine WarningDLH44 min
Jul 4, 11:51 AM CDTSevere Thunderstorm WarningDLHAshland24 min
Jul 4, 12:17 PM CDTSpecial Weather StatementDLHAshland, Iron43 min
Jul 4, 12:50 PM CDTSpecial Weather StatementDLHIron, Price25 min
Jul 4, 1:13 PM CDTSpecial Weather StatementDLHIron, Price32 min
Jul 4, 1:42 PM CDTSpecial Weather StatementDLHPrice33 min
Jul 4, 4:20 PM CDTSpecial Weather StatementDLHSawyer25 min
Jul 4, 4:37 PM CDTSevere Thunderstorm WarningDLHSawyer23 min
Jul 4, 4:59 PM CDTSevere Thunderstorm WarningDLHPrice, Sawyer31 min
Jul 4, 5:31 PM CDTSpecial Weather StatementDLHPrice29 min
Jul 4, 5:53 PM CDTSpecial Weather StatementDLHSawyer37 min

Nearby

Special Weather Statements in Minnesota, 2018Every special weather statement 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.