Alert archive / Michigan / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 4, NWS Marquette, MI

May 16, 20254 counties in Michigan

NWS Marquette, MI issued this severe thunderstorm warning at May 16, 2025, 5:13 PM EDT for 4 counties in Michigan. It was in force for 42 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 16, 2025, 5:13 PM EDT (21:13 UTC)
Expired
May 16, 2025, 5:55 PM EDT
In force
42 min
Issued by
NWS Marquette, MI
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Alger County, MI, Delta County, MI, Marquette County, MI, Menominee County, MI

The radar

The Marquette radar (KMQT), 57 km from the middle of the area, began a volume at 21:15 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, 9.2 hours before the alert went out and 196 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 2025-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2025-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 303 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1761 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
303 m²/s²
0-3 km storm-relative helicity
325 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 15, 7:19 PM EDT, 21 hours 54 minutes earlier.

Area forecast discussion, May 15, 7:19 PM EDT, 21 hours 54 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.

IssuedProductOfficeCountiesLasted
May 15, 8:03 PM EDTSpecial Weather StatementMQTGogebic42 min
May 15, 8:13 PM EDTSpecial Marine WarningMQT62 min
May 15, 8:38 PM EDTSpecial Marine WarningMQT67 min
May 15, 8:47 PM EDTSpecial Weather StatementMQTOntonagon43 min
May 15, 9:14 PM EDTSmall Craft AdvisoryMQT29 hr
May 15, 9:16 PM EDTSpecial Weather StatementMQTMenominee44 min
May 15, 9:24 PM EDTSpecial Weather StatementMQTBaraga51 min
May 15, 9:49 PM EDTSpecial Weather StatementMQTHoughton, Keweenaw41 min
May 15, 9:50 PM EDTSpecial Marine WarningMQT55 min
May 15, 9:57 PM EDTSpecial Weather StatementMQTMarquette48 min
May 15, 10:02 PM EDTSpecial Weather StatementMQTDelta43 min
May 15, 10:11 PM EDTSpecial Marine WarningMQT64 min
May 15, 10:38 PM EDTSpecial Marine WarningMQT67 min
May 15, 10:45 PM EDTSpecial Weather StatementMQTDelta45 min
May 15, 11:18 PM EDTSpecial Marine WarningMQT57 min
May 15, 11:37 PM EDTSpecial Weather StatementMQTSchoolcraft38 min
May 16, 12:13 AM EDTSpecial Marine WarningMQT62 min
May 16, 1:14 AM EDTSpecial Marine WarningMQT61 min
May 16, 4:03 PM EDTSpecial Marine WarningMQT57 min
May 16, 4:59 PM EDTSpecial Marine WarningMQT61 min
May 16, 6:48 PM EDTSpecial Marine WarningMQT57 min
May 16, 6:51 PM EDTSpecial Marine WarningMQT54 min
May 16, 6:54 PM EDTSpecial Weather StatementMQTLuce66 min
May 16, 7:32 PM EDTSevere Thunderstorm WarningMQTMenominee40 min
May 16, 7:49 PM EDTSpecial Marine WarningMQT56 min
May 16, 7:55 PM EDTSpecial Marine WarningMQT65 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2025Every severe thunderstorm warning in 2025

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.