Alert archive / Michigan / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 4, NWS Marquette, MI

May 18, 2024Houghton County, Ontonagon County, Michigan

NWS Marquette, MI issued this severe thunderstorm warning at May 18, 2024, 6:06 PM EDT for Houghton County, Ontonagon County, Michigan. 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 counties it named.

The facts

Issued: May 18, 2024, 6:06 PM EDT (22:06 UTC)
Expired: May 18, 2024, 6:30 PM EDT
In force: 24 min
Issued by: NWS Marquette, MI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Houghton County, MI, Ontonagon County, MI

The radar

The Marquette radar (KMQT), 116 km from the middle of the area, began a volume at 22:07 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 18, 4:26 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 10.1 hours before the alert went out and 276 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1710 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 55 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 May 18, 5:54 PM EDT, 12 minutes earlier.

Area forecast discussion, May 18, 5:54 PM EDT, 12 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>

Hazardous weather outlook, May 18, 4:04 PM EDT, 2 hours 2 minutes before

Hazardous Weather Outlook
National Weather Service Marquette MI
404 PM EDT Sat May 18 2024

MIZ001>007-009>014-084-085-191200-
Keweenaw-Ontonagon-Northern Houghton-Baraga-Marquette-Alger-Luce-
Gogebic-Iron-Dickinson-Menominee-Delta-Southern Schoolcraft-
Southern Houghton-Northern Schoolcraft-
404 PM EDT Sat May 18 2024 /304 PM CDT Sat May 18 2024/

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

.DAY ONE...Tonight

Thunderstorms are likely this evening, spreading west to east
across the area. The storms will end by midnight over the west
half of Upper Michigan and will exit Luce County around 3 AM EDT.
A few thunderstorms may become severe with a threat for large hail
and damaging winds, mainly west of a line from Marquette to
Menominee.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Thunderstorms are possible Monday into Monday evening and also
Tuesday afternoon and night.

.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>267-191200-
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-
404 PM EDT Sat May 18 2024 /304 PM CDT Sat May 18 2024/

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

.DAY ONE...Tonight

Thunderstorms are likely across western Lake Superior this
evening and across eastern Lake Superior tonight. A few
thunderstorms may become severe with a threat for large hail and
damaging winds, mainly west of a line from Marquette to
Michipicoten Island.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Thunderstorms are possible Monday afternoon into Monday evening
across southern portions of Lake Superior and then Tuesday night
across all of Lake Superior.

.SPOTTER INFORMATION STATEMENT...

Captains are encouraged to submit reports of large hail and wind
damage to the National Weather Service office in Marquette.

LMZ221-248-250-191200-
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-
404 PM EDT Sat May 18 2024

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

.DAY ONE...Tonight

Thunderstorms are possible this evening.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Thunderstorms are possible Monday afternoon and night and also
Tuesday afternoon and night.

.SPOTTER INFORMATION STATEMENT...

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

EK/Rolfson

In the hours before

Special weather statement, May 18, 4:11 PM EDT, 1 hour 55 minutes before

Special Weather Statement
National Weather Service Marquette MI
411 PM EDT Sat May 18 2024

MIZ002-009-182045-
Ontonagon MI-Gogebic MI-
411 PM EDT Sat May 18 2024

...A STRONG THUNDERSTORM WILL IMPACT NORTH CENTRAL GOGEBIC AND WEST
CENTRAL ONTONAGON COUNTIES THROUGH 445 PM EDT/345 PM CDT/...

At 411 PM EDT/311 PM CDT/, Doppler radar was tracking a strong
thunderstorm 10 miles west of Porcupine Mountains State Park, moving
northeast at 40 mph.

HAZARD...Winds in excess of 30 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Porcupine Mountains State Park, Silver City, Mirror Lake, and Lake of
the Clouds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4681 8996 4687 8988 4689 8962 4680 8952
      4665 9002 4676 9009
TIME...MOT...LOC 2011Z 240DEG 35KT 4674 8994

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...30 MPH

jp

Special weather statement, May 18, 5:36 PM EDT, 30 minutes before

Special Weather Statement
National Weather Service Marquette MI
436 PM CDT Sat May 18 2024

MIZ009-182200-
Gogebic MI-
436 PM CDT Sat May 18 2024

...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN GOGEBIC COUNTY
THROUGH 500 PM CDT...

At 436 PM CDT, Doppler radar was tracking a strong thunderstorm over
Ironwood, moving northeast at 40 mph.

HAZARD...Winds in excess of 30 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Ironwood, Bessemer, Wakefield, Hurley, Thomaston, and Ironwood
Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
western Upper Michigan.

&&

LAT...LON 4667 8998 4650 8977 4636 9012 4641 9016
      4649 9021
TIME...MOT...LOC 2136Z 234DEG 35KT 4644 9013

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...30 MPH

jp

Special weather statement, May 18, 5:39 PM EDT, 27 minutes before

Special Weather Statement
National Weather Service Marquette MI
539 PM EDT Sat May 18 2024

MIZ002-182215-
Ontonagon MI-
539 PM EDT Sat May 18 2024

...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN ONTONAGON COUNTY
THROUGH 615 PM EDT...

At 539 PM EDT, Doppler radar was tracking a strong thunderstorm 9
miles south of Ontonagon, moving northeast at 40 mph.

HAZARD...Winds in excess of 30 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Ontonagon and Greenland.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
western Upper Michigan.

&&

LAT...LON 4665 8945 4668 8948 4674 8951 4693 8919
      4680 8901
TIME...MOT...LOC 2139Z 234DEG 35KT 4674 8938

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...30 MPH

jp

Special weather statement, May 18, 6:00 PM EDT, 6 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>

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 11:40 AM EDT	Small Craft Advisory	MQT		10 hr
May 18, 4:09 PM EDT	Special Marine Warning	MQT		36 min
May 18, 4:11 PM EDT	Special Weather Statement	MQT	Gogebic	34 min
May 18, 4:27 PM EDT	Special Marine Warning	MQT		33 min
May 18, 5:36 PM EDT	Special Weather Statement	MQT	Gogebic	24 min
May 18, 5:39 PM EDT	Special Weather Statement	MQT	Ontonagon	36 min
May 18, 5:48 PM EDT	Severe Thunderstorm Warning	MQT	Gogebic, Ontonagon	27 min
May 18, 5:57 PM EDT	Severe Thunderstorm Warning Considerable damage threat	MQT	Gogebic, Ontonagon	33 min
May 18, 6:00 PM EDT	Special Weather Statement	MQT	Houghton	30 min
May 18, 6:09 PM EDT	Special Marine Warning	MQT		23 min
May 18, 6:17 PM EDT	Severe Thunderstorm Warning	MQT	Ontonagon	28 min
May 18, 6:28 PM EDT	Severe Thunderstorm Warning	MQT	Houghton, Ontonagon	32 min
May 18, 6:31 PM EDT	Severe Thunderstorm Warning	MQT	Ontonagon	8 min
May 18, 7:55 PM EDT	Special Marine Warning	MQT		35 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2024 Every severe thunderstorm warning in 2024

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.