Alert archive / Michigan / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 11, NWS Marquette, MI

July 5, 20204 counties in Michigan

NWS Marquette, MI issued this severe thunderstorm warning at Jul 5, 2020, 7:53 PM CDT for 4 counties in Michigan. It was in force for 37 min. 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 5, 2020, 7:53 PM CDT (00:53 UTC)
Expired
Jul 5, 2020, 8:30 PM CDT
In force
37 min
Issued by
NWS Marquette, MI
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Gogebic County, MI, Houghton County, MI, Iron County, MI, Ontonagon County, MI

The radar

The Marquette radar (KMQT), 117 km from the middle of the area, began a volume at 00:55 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, 0.9 hours before the alert went out and 403 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 2020-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1134 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 2020-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -34 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
1134 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
1609 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
-34 m²/s²
0-3 km storm-relative helicity
-43 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Marquette, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 5, 6:46 PM CDT, 1 hour 7 minutes earlier.

Area forecast discussion, Jul 5, 6:46 PM CDT, 1 hour 7 minutes before
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Hazardous weather outlook, Jul 5, 2:05 PM CDT, 5 hours 48 minutes before
Hazardous Weather Outlook
National Weather Service Marquette MI
305 PM EDT Sun Jul 5 2020

MIZ001>007-009>014-084-085-061915-
Keweenaw-Ontonagon-Northern Houghton-Baraga-Marquette-Alger-Luce-
Gogebic-Iron-Dickinson-Menominee-Delta-Southern Schoolcraft-
Southern Houghton-Northern Schoolcraft-
305 PM EDT Sun Jul 5 2020 /205 PM CDT Sun Jul 5 2020/

This Hazardous Weather Outlook is for portions of western Upper
Michigan and central Upper Michigan.

.DAY ONE...Tonight

Thunderstorms along lake breeze boundaries will persist into this
evening, especially across the south central. Stronger storms
will be capable of producing heavy rain, strong wind gusts and hail.

Additional thunderstorms are possible across the west late
tonight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Strong to severe storms are possible Monday afternoon through
Monday evening. Stronger storms will be capable of producing
heavy rain, strong wind gusts and hail.

Thunderstorms are possible Tuesday through Thursday night,
including the potential for some overnight storms. Some storms
could be strong to severe at times.

The period of hot and humid weather is expected to continue
through this week. Make sure you and your pets stay hydrated.
Never leave pets or passengers unattended in hot vehicles!

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report any observed hail or wind
damage from thunderstorms to the National Weather Service in
Marquette. The public may also submit reports to the National
Weather Service via phone, on our website, or through Facebook or
Twitter.

LSZ162-240>251-263>267-061915-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-Saxon Harbor WI to Black River MI-
Black River to Ontonagon MI-
Ontonagon to Upper Entrance of Portage Canal MI-
Upper Entrance of Portage Canal to Eagle River MI-
Eagle River to Manitou Island MI-
Manitou Island to Point Isabelle MI-
Point Isabelle to Lower Entrance of Portage Canal MI-
Lower Entrance of Portage Canal To Huron Islands MI Including
Keweenaw and Huron Bays-Huron Islands to Marquette MI-
Marquette to Munising MI-Munising to Grand Marais MI-
Grand Marais to Whitefish Point MI-
Lake Superior from Saxon Harbor WI to Upper Entrance to Portage
Canal MI 5NM off shore to the US/Canadian border including Isle
Royale National Park-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
Lake Superior East of a line from Manitou Island to Marquette MI
and West of a line from Grand Marais MI to the US/Canadian Border
Beyond 5NM from shore-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
305 PM EDT Sun Jul 5 2020 /205 PM CDT Sun Jul 5 2020/

This Hazardous Weather Outlook is for portions of Eastern Lake
Superior...Central Lake Superior and Western Lake Superior.

.DAY ONE...Tonight

Thunderstorms will be possible over Lake Superior tonight, mainly
in the western and northern portions.

Areas of fog are expected tonight, mainly across the north and
eastern parts of the lake.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Thunderstorms are possible over much of Lake Superior each day
Monday through Thursday, including the potential for some
overnight storms. A few storms could be strong to severe.

.SPOTTER INFORMATION STATEMENT...

The need for weather spotter reports is not anticipated at this
time.

LMZ221-248-250-061915-
Green Bay North of line from Cedar River MI to Rock Island
Passage-Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
305 PM EDT Sun Jul 5 2020

This Hazardous Weather Outlook is for portions of Northern Lake
Michigan.

.DAY ONE...Tonight

Thunderstorms will be possible into this evening, mainly along
the western and northern shorelines of the Bay of Green Bay.
Gusty winds and small hail may accompany stronger storms.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Thunderstorms are possible Monday through Friday, including the
potential for some overnight storms. A few storms could be strong
to severe at times.

.SPOTTER INFORMATION STATEMENT...

The need for weather spotter reports is not anticipated at this
time.

Ritzman

In the hours before

Local storm report, Jul 5, 3:37 PM CDT, 4 hours 16 minutes before
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Special weather statement, Jul 5, 3:46 PM CDT, 4 hours 7 minutes before
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Special weather statement, Jul 5, 3:54 PM CDT, 3 hours 59 minutes before
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Special weather statement, Jul 5, 4:33 PM CDT, 3 hours 20 minutes before
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Special weather statement, Jul 5, 6:45 PM CDT, 1 hour 8 minutes before
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Special weather statement, Jul 5, 7:38 PM CDT, 15 minutes before
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The office that day

Everything else NWS Marquette, MI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 5, 7:38 PM CDTSpecial Weather StatementMQTIron52 min
Jul 6, 11:30 AM CDTSpecial Weather StatementMQTOntonagon15 min
Jul 6, 11:46 AM CDTSpecial Weather StatementMQTOntonagon14 min
Jul 6, 12:05 PM CDTSpecial Weather StatementMQTOntonagon25 min
Jul 6, 12:27 PM CDTSpecial Weather StatementMQTBaraga33 min
Jul 6, 12:34 PM CDTSpecial Weather StatementMQTOntonagon26 min
Jul 6, 12:53 PM CDTSpecial Marine WarningMQT37 min
Jul 6, 1:06 PM CDTSpecial Marine WarningMQT24 min
Jul 6, 1:19 PM CDTSpecial Marine WarningMQT26 min
Jul 6, 1:23 PM CDTSpecial Weather StatementMQTIron37 min
Jul 6, 1:46 PM CDTSpecial Marine WarningMQT44 min
Jul 6, 1:52 PM CDTSpecial Weather StatementMQTMarquette23 min
Jul 6, 2:15 PM CDTSpecial Marine WarningMQT45 min
Jul 6, 2:30 PM CDTAreal Flood AdvisoryMQTGogebic3 hr
Jul 6, 2:30 PM CDTSpecial Marine WarningMQT45 min
Jul 6, 2:32 PM CDTSpecial Weather StatementMQTAlger28 min
Jul 6, 2:38 PM CDTSpecial Weather StatementMQTLuce52 min
Jul 6, 2:46 PM CDTSevere Thunderstorm WarningMQTAlger, Schoolcraft23 min
Jul 6, 2:47 PM CDTSevere Thunderstorm WarningMQTAlger, Luce29 min
Jul 6, 3:05 PM CDTSpecial Marine WarningMQT25 min
Jul 6, 3:07 PM CDTSpecial Weather StatementMQTMenominee53 min
Jul 6, 3:15 PM CDTSpecial Weather StatementMQTAlger30 min
Jul 6, 3:20 PM CDTSpecial Weather StatementMQTAlger25 min
Jul 6, 3:20 PM CDTSevere Thunderstorm WarningMQTLuce25 min
Jul 6, 3:26 PM CDTSevere Thunderstorm WarningMQTMenominee29 min
Jul 6, 3:27 PM CDTSpecial Marine WarningMQT48 min
Jul 6, 3:37 PM CDTSpecial Weather StatementMQTDelta53 min
Jul 6, 3:43 PM CDTSpecial Weather StatementMQTAlger47 min
Jul 6, 3:50 PM CDTSpecial Marine WarningMQT85 min
Jul 6, 3:52 PM CDTSevere Thunderstorm WarningMQTAlger, Delta, Menominee, Schoolcraft38 min
Jul 6, 3:54 PM CDTSpecial Marine WarningMQT36 min
Jul 6, 4:27 PM CDTSevere Thunderstorm WarningMQTDelta, Schoolcraft32 min
Jul 6, 4:56 PM CDTSpecial Marine WarningMQT49 min
Jul 6, 6:05 PM CDTSpecial Weather StatementMQTGogebic25 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2020Every severe thunderstorm warning in 2020

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.