Alert archive / Michigan / Special Weather Statements in 2021

Special Weather Statement, NWS Detroit, MI

July 13, 2021Saginaw County, Michigan

NWS Detroit, MI issued this special weather statement at Jul 13, 2021, 12:01 PM EDT for Saginaw County, Michigan. It was in force for 74 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
Jul 13, 2021, 12:01 PM EDT (16:01 UTC)
Expired
Jul 13, 2021, 1:15 PM EDT
In force
74 min
Issued by
NWS Detroit, MI

County Saginaw County, MI

The radar

The Detroit radar (KDTX), 91 km from the middle of the area, began a volume at 16:03 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, 4.0 hours before the alert went out and 91 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, Detroit, MI at 12:00Z on 2021-07-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 749 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, Detroit, MI at 12:00Z on 2021-07-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 98 square meters per square second.19395878Sfc1 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
749 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
630 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
98 m²/s²
0-3 km storm-relative helicity
116 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.8

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 Detroit, MI wrote its last area forecast discussion before this special weather statement went out at Jul 13, 6:06 AM EDT, 5 hours 55 minutes earlier.

Area forecast discussion, Jul 13, 6:06 AM EDT, 5 hours 55 minutes before
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Hazardous weather outlook, Jul 13, 4:44 AM EDT, 7 hours 17 minutes before
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</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.
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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In the hours before

Special weather statement, Jul 13, 12:01 PM EDT, 0 minutes before
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    <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.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 13, 12:52 PM EDTSpecial Weather StatementDTXSaint Clair68 min
Jul 13, 1:14 PM EDTSpecial Weather StatementDTXTuscola76 min
Jul 13, 1:19 PM EDTSpecial Weather StatementDTXHuron26 min
Jul 13, 1:42 PM EDTSpecial Weather StatementDTXMacomb, Wayne78 min
Jul 13, 2:30 PM EDTSpecial Weather StatementDTXSaint Clair60 min
Jul 13, 2:41 PM EDTSpecial Weather StatementDTXLenawee64 min
Jul 13, 3:08 PM EDTSpecial Weather StatementDTXShiawassee67 min
Jul 13, 3:22 PM EDTSpecial Weather StatementDTXTuscola53 min
Jul 13, 3:29 PM EDTSpecial Weather StatementDTXWashtenaw46 min
Jul 13, 3:34 PM EDTSpecial Weather StatementDTXLivingston71 min
Jul 13, 3:54 PM EDTSpecial Weather StatementDTXWayne66 min
Jul 13, 3:58 PM EDTSpecial Weather StatementDTXTuscola77 min
Jul 13, 4:01 PM EDTSpecial Weather StatementDTXGenesee44 min
Jul 13, 4:14 PM EDTSpecial Weather StatementDTXOakland76 min
Jul 13, 4:27 PM EDTSpecial Weather StatementDTXLenawee78 min
Jul 13, 4:32 PM EDTSpecial Weather StatementDTXSanilac88 min
Jul 13, 4:36 PM EDTSpecial Weather StatementDTXLapeer69 min
Jul 13, 4:57 PM EDTSpecial Weather StatementDTXMacomb, Saint Clair93 min
Jul 13, 5:02 PM EDTSpecial Weather StatementDTXMonroe, Wayne73 min
Jul 13, 5:21 PM EDTSpecial Weather StatementDTXSaint Clair, Sanilac54 min
Jul 13, 5:24 PM EDTSpecial Marine WarningDTX68 min
Jul 13, 5:35 PM EDTSpecial Weather StatementDTXMonroe40 min

Nearby

Special Weather Statements in Michigan, 2021Every special weather statement in 2021

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.