Alert archive / Michigan / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 52, NWS Detroit, MI

July 29, 2019Saginaw County, Shiawassee County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Jul 29, 2019, 2:09 PM EDT for Saginaw County, Shiawassee County, Michigan. It was in force for 48 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 29, 2019, 2:09 PM EDT (18:09 UTC)
Expired
Jul 29, 2019, 2:57 PM EDT
In force
48 min
Issued by
NWS Detroit, MI
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Saginaw County, MI, Shiawassee County, MI

The radar

The Detroit radar (KDTX), 71 km from the middle of the area, began a volume at 18:10 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, 6.2 hours before the alert went out and 72 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 2019-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 286 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 2019-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 square meters per square second.1939Sfc1 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
286 J/kg
Mixed-layer CIN
-60 J/kg
Mixed-layer LCL
1071 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
4 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 Detroit, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 29, 6:49 AM EDT, 7 hours 20 minutes earlier.

Area forecast discussion, Jul 29, 6:49 AM EDT, 7 hours 20 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 29, 3:26 AM EDT, 10 hours 43 minutes before
Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
326 AM EDT Mon Jul 29 2019

MIZ047>049-053>055-060>063-068>070-075-076-082-083-300815-
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-Lapeer-
St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe-
326 AM EDT Mon Jul 29 2019

This hazardous weather outlook is for southeast Michigan.

.DAY ONE...Today and Tonight

Scattered thunderstorms are expected to develop this afternoon,
and gradually end this evening as a cold front moves through the
area. While a storm or two may become strong to marginally severe
(wind gusts 50-60 mph), most of the activity will only produce
locally heavy rainfall, small hail, and wind gusts to 45 mph. Storm
motion will be southwest to northeast at 35 mph.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

There is a chance of non-severe thunderstorms Tuesday afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-300815-
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-
326 AM EDT Mon Jul 29 2019

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

.DAY ONE...Today and Tonight

Scattered thunderstorms are expected to develop this afternoon,
and gradually end this evening as a cold front moves through the
area. Storms will be capable of producing wind gusts of 40 knots or
greater, along with small hail. Storm motion will be southwest to
northeast at 30 knots.

Small Craft advisories in effect for Saginaw Bay and Michigan Waters
of Lake Erie. Refer to latest marine forecast for details.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

There is a chance of non-severe thunderstorms Tuesday afternoon.

.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.

SF

In the hours before

Special weather statement, Jul 29, 2:01 PM EDT, 8 minutes before
Special Weather Statement
National Weather Service Detroit/Pontiac MI
201 PM EDT Mon Jul 29 2019

MIZ054-061-062-291915-
Tuscola MI-Genesee MI-Lapeer MI-
201 PM EDT Mon Jul 29 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN TUSCOLA...
NORTHWESTERN LAPEER AND NORTHEASTERN GENESEE COUNTIES UNTIL 315 PM
EDT...

At 201 PM EDT, Doppler radar was tracking a strong thunderstorm near
Otisville, or 7 miles east of Clio, moving northeast at 30 mph.

Penny size hail and wind gusts up to 50 mph will be possible with
this storm.

This strong thunderstorm will be near...
  Otisville around 210 PM EDT.
  Millington, Columbiaville and Otter Lake around 220 PM EDT.
  Mayville around 240 PM EDT.
  Clifford around 250 PM EDT.
  Kingston around 300 PM EDT.

Other locations impacted by this storm include East Dayton, Deford,
Wilmot, Thetford Township, Silverwood, Genesee and Fostoria.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4334 8310 4305 8350 4313 8367 4322 8361
      4361 8312
TIME...MOT...LOC 1801Z 228DEG 25KT 4314 8360

JVC

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 1:35 PM EDTSevere Thunderstorm WarningDTXOakland27 min
Jul 29, 2:01 PM EDTSpecial Weather StatementDTXTuscola74 min
Jul 29, 2:13 PM EDTSevere Thunderstorm WarningDTXLivingston62 min
Jul 29, 2:16 PM EDTSpecial Weather StatementDTXLapeer59 min
Jul 29, 2:26 PM EDTSpecial Weather StatementDTXTuscola64 min
Jul 29, 2:38 PM EDTSevere Thunderstorm WarningDTXTuscola42 min
Jul 29, 2:44 PM EDTSevere Thunderstorm WarningDTXOakland45 min
Jul 29, 2:56 PM EDTSevere Thunderstorm WarningDTXSaint Clair, Sanilac32 min
Jul 29, 3:03 PM EDTSpecial Marine WarningDTX117 min
Jul 29, 3:19 PM EDTSpecial Weather StatementDTXSaint Clair26 min
Jul 29, 3:27 PM EDTSpecial Weather StatementDTXLapeer63 min
Jul 29, 4:00 PM EDTSpecial Marine WarningDTX2 hr
Jul 29, 4:17 PM EDTSpecial Weather StatementDTXMacomb, Saint Clair, Wayne43 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2019Every 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.