Alert archive / Michigan / Special Weather Statements in 2020

Special Weather Statement, NWS Marquette, MI

August 8, 2020Gogebic County, Michigan

NWS Marquette, MI issued this special weather statement at Aug 8, 2020, 2:13 AM CDT for Gogebic County, Michigan. It was in force for 77 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
Aug 8, 2020, 2:13 AM CDT (07:13 UTC)
Expired
Aug 8, 2020, 3:30 AM CDT
In force
77 min
Issued by
NWS Marquette, MI

County Gogebic County, MI

The radar

The Duluth radar (KDLH), 161 km from the middle of the area, began a volume at 07:13 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

International Fa, MN (KINL), launched 00:00Z, 7.2 hours before the alert went out and 325 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, International Fa, MN at 00:00Z on 2020-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 677 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, International Fa, MN at 00:00Z on 2020-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 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
677 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
1011 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
62 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Marquette, MI wrote its last area forecast discussion before this special weather statement went out at Aug 8, 1:59 AM CDT, 14 minutes earlier.

Area forecast discussion, Aug 8, 1:59 AM CDT, 14 minutes before
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Hazardous weather outlook, Aug 7, 2:25 PM CDT, 11 hours 48 minutes before
Hazardous Weather Outlook
National Weather Service Marquette MI
325 PM EDT Fri Aug 7 2020

MIZ001>007-009>013-084-085-081200-
Keweenaw-Ontonagon-Northern Houghton-Baraga-Marquette-Alger-Luce-
Gogebic-Iron-Dickinson-Menominee-Delta-Southern Houghton-
Northern Schoolcraft-
325 PM EDT Fri Aug 7 2020 /225 PM CDT Fri Aug 7 2020/

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

.DAY ONE...Tonight

Thunderstorms are possible late tonight over the western half of
Upper Michigan. Some storms could produce gusty winds, small
hail and heavy rain.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Thunderstorms are possible Saturday through Monday. Some of the
storms could produce some small hail, gusty winds and heavy rain.

.SPOTTER INFORMATION STATEMENT...

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

MIZ014-081200-
Southern Schoolcraft-
325 PM EDT Fri Aug 7 2020

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

.DAY ONE...Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Thunderstorms are possible Saturday through Monday.

High waves will cause concerns for minor lakeshore flooding and a
high swim risk Saturday through Saturday evening for beaches and
the shoreline of Schoolcraft County.

.SPOTTER INFORMATION STATEMENT...

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

LSZ162-240>251-263>267-081200-
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-
325 PM EDT Fri Aug 7 2020 /225 PM CDT Fri Aug 7 2020/

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

.DAY ONE...Tonight

Thunderstorms are possible late tonight, mainly over western and
central Lake Superior. Some storms could produce gusty winds, small
hail and heavy rain. A few gale force gusts to 35 knots are
possible over the western half of Lake Superior.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Thunderstorms are possible across all of Lake Superior Saturday
through Monday.

.SPOTTER INFORMATION STATEMENT...

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

LMZ221-248-250-081200-
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-
325 PM EDT Fri Aug 7 2020

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

.DAY ONE...Tonight

Thunderstorms are possible late tonight.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Thunderstorms are possible Saturday through Monday.

.SPOTTER INFORMATION STATEMENT...

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

07

In the hours before

Special weather statement, Aug 8, 2:13 AM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 8:31 PM CDTBeach Hazards StatementMQTSchoolcraft34 hr
Aug 8, 3:20 AM CDTSpecial Weather StatementMQTGogebic, Ontonagon55 min
Aug 8, 4:08 AM CDTSpecial Weather StatementMQTOntonagon37 min
Aug 8, 4:48 AM CDTSpecial Weather StatementMQTBaraga, Iron72 min
Aug 8, 5:55 AM CDTSpecial Weather StatementMQTDickinson, Marquette65 min
Aug 8, 6:45 AM CDTSpecial Weather StatementMQTMenominee60 min

Nearby

Special Weather Statements in Michigan, 2020Every special weather statement 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.