Alert archive / Michigan / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 37, NWS Marquette, MI

June 16, 2017Alger County, Marquette County, Michigan

NWS Marquette, MI issued this severe thunderstorm warning at Jun 16, 2017, 2:31 PM EDT for Alger County, Marquette County, Michigan. It was in force for 30 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
Jun 16, 2017, 2:31 PM EDT (18:31 UTC)
Expired
Jun 16, 2017, 3:01 PM EDT
In force
30 min
Issued by
NWS Marquette, MI
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Alger County, MI, Marquette County, MI

The radar

The Marquette radar (KMQT), 37 km from the middle of the area, began a volume at 18:31 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 6.5 hours before the alert went out and 245 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, Green Bay/Straub, WI at 12:00Z on 2017-06-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 32 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, Green Bay/Straub, WI at 12:00Z on 2017-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 101 square meters per square second.19395878Sfc1 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
32 J/kg
Mixed-layer CIN
-200 J/kg
Mixed-layer LCL
1563 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
101 m²/s²
0-3 km storm-relative helicity
170 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 Jun 16, 2:21 PM EDT, 10 minutes earlier.

Area forecast discussion, Jun 16, 2:21 PM EDT, 10 minutes before
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Hazardous weather outlook, Jun 16, 4:53 AM EDT, 9 hours 38 minutes before
Hazardous Weather Outlook
National Weather Service Marquette MI
453 AM EDT Fri Jun 16 2017

MIZ001>007-009>014-084-085-171200-
Keweenaw-Ontonagon-Northern Houghton-Baraga-Marquette-Alger-Luce-
Gogebic-Iron-Dickinson-Menominee-Delta-Southern Schoolcraft-
Southern Houghton-Northern Schoolcraft-
453 AM EDT Fri Jun 16 2017 /353 AM CDT Fri Jun 16 2017/

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

.DAY ONE...Today and Tonight

Scattered thunderstorms are expected this afternoon through
tonight. Some storms may produce small hail and gusty winds.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

There is a chance of thunderstorms Saturday into Saturday night.
Some storms may produce small hail and gusty winds.

More thunderstorms are possible Tuesday and Thursday, especially
during the afternoon hours.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report any observed hail or strong
winds 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>267-171200-
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-
453 AM EDT Fri Jun 16 2017 /353 AM CDT Fri Jun 16 2017/

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

.DAY ONE...Today and Tonight

There is a chance of thunderstorms this afternoon through tonight,
especially this afternoon into early this evening along the south
shore of Lake Superior from Marquette to Whitefish Point. Some
storms may produce small hail and gusty winds.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

There is a chance of thunderstorms Saturday into Saturday evening.
Some storms may produce small hail and gusty winds.

Fog may be dense at times Saturday night through Monday.

.SPOTTER INFORMATION STATEMENT...

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

LMZ221-248-250-171200-
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-
453 AM EDT Fri Jun 16 2017

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

.DAY ONE...Today and Tonight

Expect patchy dense fog this morning. Scattered thunderstorms are
expected late this afternoon with isolated thunderstorms tonight.
Some storms may produce small hail and gusty winds.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

There is a chance of thunderstorms Saturday into Saturday night.
Some storms may produce small hail and gusty winds. Patchy fog
could be dense Saturday night into Sunday morning.

More thunderstorms are possible Tuesday and Thursday, especially
during the afternoon hours.

.SPOTTER INFORMATION STATEMENT...

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

JLA

In the hours before

Local storm report, Jun 16, 2:01 PM EDT, 30 minutes before
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Local storm report, Jun 16, 2:04 PM EDT, 27 minutes before
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Special weather statement, Jun 16, 2:04 PM EDT, 27 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 15, 8:04 PM EDTSpecial Weather StatementMQTDelta41 min
Jun 16, 2:04 PM EDTSpecial Weather StatementMQTDickinson41 min
Jun 16, 2:52 PM EDTSpecial Weather StatementMQTMarquette23 min
Jun 16, 3:05 PM EDTSpecial Weather StatementMQTAlger25 min
Jun 16, 3:56 PM EDTSpecial Weather StatementMQTLuce49 min
Jun 16, 4:18 PM EDTSevere Thunderstorm WarningMQTMenominee42 min
Jun 16, 4:44 PM EDTSpecial Marine WarningMQT61 min
Jun 16, 5:01 PM EDTSpecial Weather StatementMQTAlger44 min
Jun 16, 5:19 PM EDTSpecial Marine WarningMQT56 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2017Every severe thunderstorm warning in 2017

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.