Alert archive / Michigan / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 32, NWS Detroit, MI

July 2, 2019Oakland County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Jul 2, 2019, 6:57 PM EDT for Oakland County, Michigan. It was in force for 26 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: Jul 2, 2019, 6:57 PM EDT (22:57 UTC)
Expired: Jul 2, 2019, 7:23 PM EDT
In force: 26 min
Issued by: NWS Detroit, MI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Oakland County, MI

The radar

The Detroit radar (KDTX), 8 km from the middle of the area, began a volume at 23:00 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

Detroit, MI (KDTX), launched 12:00Z, 11.0 hours before the alert went out and 8 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: 84 J/kg
Mixed-layer CIN: -138 J/kg
Mixed-layer LCL: 1213 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 61 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.3

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 Detroit, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 2, 6:49 PM EDT, 8 minutes earlier.

Area forecast discussion, Jul 2, 6:49 PM EDT, 8 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, Jul 2, 5:04 AM EDT, 13 hours 53 minutes before

Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
504 AM EDT Tue Jul 2 2019

MIZ047>049-053>055-060>063-068>070-075-076-082-083-030915-
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-Lapeer-
St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe-
504 AM EDT Tue Jul 2 2019

This hazardous weather outlook is for portions of southeast
Michigan.

.DAY ONE...Today and Tonight

There is a Marginal Risk for severe weather today. Threats include wind
gusts up to 50-60 mph and locally heavy rainfall. Hail up to one
inch may also be possible, but damaging winds and flooding of prone
locations, especially urban locations, will be the main threats.
Timing of the greatest severe weather potential will be between 2 pm
and 11 pm. Expecting scattered to numerous multi-cell clusters
moving northwest to southeast at around 30 mph.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Chances for thunderstorms will exist through the end of the week,
but there is low confidence in coverage of thunderstorms from day to
day. Stay up to date with the latest forecast as changes will be
possible throughout the week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-030915-
Lake St Clair-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM
off shore-
Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw
Bay-Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI-
Port Sanilac to Port Huron MI-
Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore-
Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore-
Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore-
504 AM EDT Tue Jul 2 2019

This hazardous weather outlook is for portions of Lake Erie, Lake
Huron and Lake St Clair.

.DAY ONE...Today and Tonight

There is a Marginal Risk for severe weather today. Threats include
wind
gusts up to 50-60 mph and locally heavy rainfall. Hail up to one
inch may also be possible, but damaging winds and flooding of prone
locations, especially urban locations, will be the main threats.
Timing of the greatest severe weather potential will be between 2 pm
and 11 pm. Expecting scattered to numerous multi-cell clusters
moving northwest to southeast at around 30 mph.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Chances for thunderstorms will exist through the end of the week,
but there is low confidence in coverage of thunderstorms from day to
day. Stay up to date with the latest forecast as changes will be
possible throughout the week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

You can obtain your latest National Weather Service forecasts online
at www.weather.gov/detroit.

AA

In the hours before

Local storm report, Jul 2, 5:45 PM EDT, 1 hour 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>

Local storm report, Jul 2, 6:02 PM EDT, 55 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>

Special weather statement, Jul 2, 6:19 PM EDT, 38 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, Jul 2, 6:36 PM EDT, 21 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, Jul 2, 6:43 PM EDT, 14 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>

Special weather statement, Jul 2, 6:47 PM EDT, 10 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 Detroit, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 2, 12:48 PM EDT	Special Weather Statement	DTX	Lenawee	42 min
Jul 2, 4:16 PM EDT	Special Weather Statement	DTX	Washtenaw	44 min
Jul 2, 4:30 PM EDT	Severe Thunderstorm Warning	DTX	Lenawee, Washtenaw	30 min
Jul 2, 4:36 PM EDT	Severe Thunderstorm Warning	DTX	Monroe	24 min
Jul 2, 4:43 PM EDT	Special Weather Statement	DTX	Lenawee	62 min
Jul 2, 4:48 PM EDT	Special Weather Statement	DTX	Livingston	57 min
Jul 2, 4:56 PM EDT	Severe Thunderstorm Warning	DTX	Livingston	32 min
Jul 2, 5:07 PM EDT	Special Weather Statement	DTX	Monroe	53 min
Jul 2, 5:16 PM EDT	Special Weather Statement	DTX	Oakland	44 min
Jul 2, 5:17 PM EDT	Special Marine Warning	DTX		43 min
Jul 2, 5:22 PM EDT	Special Weather Statement	DTX	Washtenaw	38 min
Jul 2, 5:24 PM EDT	Severe Thunderstorm Warning	DTX	Oakland	51 min
Jul 2, 5:34 PM EDT	Severe Thunderstorm Warning	DTX	Washtenaw	30 min
Jul 2, 5:37 PM EDT	Special Marine Warning	DTX		23 min
Jul 2, 6:14 PM EDT	Severe Thunderstorm Warning	DTX	Saginaw, Shiawassee	20 min
Jul 2, 6:17 PM EDT	Special Marine Warning	DTX		88 min
Jul 2, 6:19 PM EDT	Special Weather Statement	DTX	Livingston	26 min
Jul 2, 6:42 PM EDT	Severe Thunderstorm Warning	DTX	Livingston	24 min
Jul 2, 6:47 PM EDT	Special Weather Statement	DTX	Lapeer	28 min
Jul 2, 7:25 PM EDT	Special Weather Statement	DTX	Livingston	65 min
Jul 2, 7:31 PM EDT	Severe Thunderstorm Warning	DTX	Oakland, Wayne	47 min
Jul 2, 7:42 PM EDT	Special Marine Warning	DTX		66 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2019 Every severe thunderstorm warning in 2019

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.