Alert archive / Michigan / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 62, NWS Marquette, MI
NWS Marquette, MI issued this severe thunderstorm warning at Sep 1, 2018, 3:35 AM EDT for Baraga County, Michigan. It was in force for 28 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
- Sep 1, 2018, 3:35 AM EDT (07:35 UTC)
- Expired
- Sep 1, 2018, 4:03 AM EDT
- In force
- 28 min
- Issued by
- NWS Marquette, MI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Baraga County, MI
The radar
The Marquette radar (KMQT), 64 km from the middle of the area, began a volume at 07:37 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 00:00Z, 7.6 hours before the alert went out and 248 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.
- Mixed-layer CAPE
- 98 J/kg
- Mixed-layer CIN
- -222 J/kg
- Mixed-layer LCL
- 1182 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 147 m²/s²
- 0-3 km storm-relative helicity
- 189 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Sep 1, 2:34 AM EDT, 1 hour 1 minute earlier.
Area forecast discussion, Sep 1, 2:34 AM EDT, 1 hour 1 minute before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>Hazardous weather outlook, Aug 31, 5:06 PM EDT, 10 hours 29 minutes before
Hazardous Weather Outlook National Weather Service Marquette MI 506 PM EDT Fri Aug 31 2018 MIZ001>007-009>014-084-085-012115- Keweenaw-Ontonagon-Northern Houghton-Baraga-Marquette-Alger-Luce- Gogebic-Iron-Dickinson-Menominee-Delta-Southern Schoolcraft- Southern Houghton-Northern Schoolcraft- 506 PM EDT Fri Aug 31 2018 /406 PM CDT Fri Aug 31 2018/ This Hazardous Weather Outlook is for portions of western Upper Michigan and central Upper Michigan. .DAY ONE...Tonight Thunderstorms containing gusty winds and moderate to locally heavy rainfall may be possible. Areas that have already received multiple rounds of rain may experience localized flooding. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Multiple rounds of thunderstorms will be possible through mid- week. Late Sunday, thunderstorms may contain gusty winds and moderate to locally heavy rainfall. Areas that have already received multiple rounds of rain may experience localized flooding. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to submit reports to the National Weather Service in Marquette. The public may also submit reports at our webpage, Facebook page, or on Twitter. LSZ162-240>251-263>267-012115- 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- 506 PM EDT Fri Aug 31 2018 /406 PM CDT Fri Aug 31 2018/ This Hazardous Weather Outlook is for portions of Eastern Lake Superior...Central Lake Superior and Western Lake Superior. .DAY ONE...Tonight Thunderstorms containing gusty winds and moderate to locally heavy rainfall may be possible. Fog, reducing visibilities, may also be possible. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Multiple rounds of thunderstorms will be possible through mid- week. Late Sunday, thunderstorms may contain gusty winds and moderate to locally heavy rainfall. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to submit reports to the National Weather Service in Marquette. The public may also submit reports at our webpage, Facebook page, or on Twitter. LMZ221-248-250-012115- 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- 506 PM EDT Fri Aug 31 2018 This Hazardous Weather Outlook is for portions of Northern Lake Michigan. .DAY ONE...Tonight Thunderstorms containing gusty winds and moderate to locally heavy rainfall may be possible. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Multiple rounds of thunderstorms will be possible through mid- week. Late Sunday, thunderstorms may contain gusty winds and moderate to locally heavy rainfall. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to submit reports to the National Weather Service in Marquette. The public may also submit reports at our webpage, Facebook page, or on Twitter. lg
In the hours before
Local storm report, Aug 31, 10:26 PM EDT, 5 hours 9 minutes before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>Local storm report, Aug 31, 11:10 PM EDT, 4 hours 25 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MARQUETTE MI
1110 PM EDT FRI AUG 31 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0600 PM MARINE TSTM WIND STANNARD ROCK 47.18N 87.22W
08/31/2018 M45 MPH LSZ266 MI BUOY
BUOY STATION STDM4, STANNARD ROCK.
0400 PM MARINE TSTM WIND 29 N GRAND MARAIS 47.10N 85.90W
08/31/2018 M40 MPH LSZ267 MI SHIP
VESSEL ASSINIBOINE VCKQ, 29 N GRAND MARAIS.
0623 PM MARINE TSTM WIND COPPER HARBOR 47.47N 87.88W
08/31/2018 M36 MPH KEWEENAW MI ASOS
ASOS STATION P59, COPPER HARBOR.
0350 PM MARINE TSTM WIND MINNEAPOLIS SHOAL 45.58N 87.00W
08/31/2018 M35 MPH LMZ221 MI MESONET
MESONET STATION XMAPV, MINNEAPOLIS SHOAL.
&&
JSSSpecial weather statement, Aug 31, 11:47 PM EDT, 3 hours 48 minutes before
Special Weather Statement
National Weather Service Marquette MI
1147 PM EDT FRI AUG 31 2018
MIZ001-010430-
Keweenaw MI-
1147 PM EDT FRI AUG 31 2018
...SIGNIFICANT WEATHER ADVISORY FOR ISLE ROYALE IN KEWEENAW COUNTY
UNTIL 1230 AM EDT...
At 1145 PM EDT, Doppler radar was tracking a strong thunderstorm 7
miles southwest of Windigo, or 24 miles west of Siskiwit Lake, moving
east at 50 mph.
Very heavy rainfall and winds up to 40 mph will be possible with
this storm.
Locations impacted include...
Siskiwit Lake, Mott Island Park Headquarters, Windigo, Rock Harbor
and Mount Desor.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek safe
shelter inside a building if possible.
Persons in campgrounds should consider seeking sturdy shelter until
this storm passes.
&&
LAT...LON 4819 8839 4814 8833 4799 8855 4778 8916
4781 8934 4792 8934 4803 8909 4818 8869
TIME...MOT...LOC 0345Z 252DEG 42KT 4786 8929
RolfsonLocal storm report, Sep 1, 12:32 AM EDT, 3 hours 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MARQUETTE MI
1232 AM EDT SAT SEP 1 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1153 PM MARINE TSTM WIND ROCK OF AGES 47.87N 89.31W
08/31/2018 M43 MPH LSZ263 MI C-MAN STATION
&&Special weather statement, Sep 1, 2:57 AM EDT, 38 minutes before
Special Weather Statement
National Weather Service Marquette MI
257 AM EDT SAT SEP 1 2018
MIZ001-003-010745-
Keweenaw MI-Houghton MI-
257 AM EDT SAT SEP 1 2018
...SIGNIFICANT WEATHER ADVISORY FOR KEWEENAW AND NORTHEASTERN
HOUGHTON COUNTIES UNTIL 345 AM EDT...
At 256 AM EDT, Doppler radar was tracking a strong thunderstorm over
Dollar Bay, or near Houghton, moving northeast at 40 mph.
Torrential rain and winds up to 40 mph will be possible with this
storm.
Locations impacted include...
Houghton, Calumet, Eagle Harbor, Copper Harbor, Eagle River, Hancock,
Laurium, Chassell, Lake Linden, Brockway Mountain, Bete Grise,
Houghton County Airport, Lac La Belle, Phoenix, Dollar Bay, Hubbell,
The Upper Entrance of Portage Canal, Mohawk, Gay and Allouez.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
Persons in campgrounds should consider seeking sturdy shelter until
this storm passes.
&&
LAT...LON 4738 8751 4734 8758 4732 8784 4717 8811
4713 8814 4701 8852 4725 8873 4753 8816
4754 8784
TIME...MOT...LOC 0656Z 246DEG 36KT 4713 8846
RolfsonThe office that day
Everything else NWS Marquette, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 9:17 PM EDT | Special Marine Warning | MQT | 58 min | |
| Aug 31, 10:54 PM EDT | Special Marine Warning | MQT | 2 hr | |
| Aug 31, 11:47 PM EDT | Special Weather Statement | MQT | 43 min | |
| Sep 1, 12:39 AM EDT | Special Marine Warning | MQT | 51 min | |
| Sep 1, 12:43 AM EDT | Special Marine Warning | MQT | 92 min | |
| Sep 1, 1:10 AM EDT | Severe Thunderstorm Warning | MQT | Gogebic, Ontonagon | 65 min |
| Sep 1, 2:07 AM EDT | Severe Thunderstorm Warning | MQT | Ontonagon | 53 min |
| Sep 1, 2:13 AM EDT | Special Marine Warning | MQT | 62 min | |
| Sep 1, 2:57 AM EDT | Special Weather Statement | MQT | Keweenaw | 48 min |
| Sep 1, 3:02 AM EDT | Special Marine Warning | MQT | 58 min | |
| Sep 1, 4:08 AM EDT | Special Weather Statement | MQT | Baraga | 37 min |
| Sep 1, 4:30 AM EDT | Beach Hazards Statement | MQT | Schoolcraft | 16 hr |
| Sep 1, 6:59 AM EDT | Special Weather Statement | MQT | Houghton | 16 min |
| Sep 1, 7:01 AM EDT | Special Marine Warning | MQT | 59 min | |
| Sep 1, 7:26 AM EDT | Special Marine Warning | MQT | 94 min | |
| Sep 1, 7:43 AM EDT | Special Weather Statement | MQT | Keweenaw | 47 min |
| Sep 1, 6:14 PM EDT | Special Weather Statement | MQT | Marquette | 61 min |
| Sep 1, 6:30 PM EDT | Special Marine Warning | MQT | 60 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2018Every severe thunderstorm 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.