Alert archive / Michigan / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 73, NWS Detroit, MI

July 26, 2023Saint Clair County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Jul 26, 2023, 3:54 PM EDT for Saint Clair County, Michigan. It was in force for 44 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 26, 2023, 3:54 PM EDT (19:54 UTC)
Expired
Jul 26, 2023, 4:38 PM EDT
In force
44 min
Issued by
NWS Detroit, MI
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

County Saint Clair County, MI

The radar

The Detroit radar (KDTX), 71 km from the middle of the area, began a volume at 19:55 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.

IssuedProductOfficeLasted
Jul 26, 2:03 PM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 7.9 hours before the alert went out and 67 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 2023-07-26Temperature 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, Detroit, MI at 12:00Z on 2023-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 50 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1873 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
50 m²/s²
0-3 km storm-relative helicity
81 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 26, 3:32 PM EDT, 22 minutes earlier.

Area forecast discussion, Jul 26, 3:32 PM EDT, 22 minutes before
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Hazardous weather outlook, Jul 26, 3:39 PM EDT, 15 minutes before
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In the hours before

Special weather statement, Jul 26, 2:28 PM EDT, 1 hour 26 minutes before
Special Weather Statement
National Weather Service Detroit/Pontiac MI
228 PM EDT Wed Jul 26 2023

MIZ068-075-261930-
Livingston MI-Washtenaw MI-
228 PM EDT Wed Jul 26 2023

...Strong thunderstorms will impact portions of Livingston and
Washtenaw Counties through 330 PM EDT...

At 226 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Mason to 7 miles south of Leslie to 6
miles west of Cement City. Movement was east at 35 mph.

HAZARD...Wind gusts of 50 to 55 mph and pea size hail.

SOURCE...Radar indicated.

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

Strong thunderstorms will be near...
  Fowlerville and Gregory around 250 PM EDT.
  Chelsea around 255 PM EDT.
  Pinckney and Manchester around 300 PM EDT.
  Howell, Dexter and Oak Grove around 305 PM EDT.
  Ann Arbor, Brighton and Hamburg around 315 PM EDT.
  Hartland and Whitmore Lake around 320 PM EDT.
  Dixboro around 325 PM EDT.
  Ypsilanti, Milan and Salem around 330 PM EDT.

Other locations impacted by these storms include Pittsfield Township,
Whittaker, Plainfield, Hudson Mills Metropark, Island Lake State
Recreation Area, Bridgewater, Delhi Mills, Pleasant Lake, Barton
Hills and Conway Township.

People attending Fowlerville Family Fair should seek safe shelter
immediately!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

These storms 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.

A Severe Thunderstorm Watch remains in effect until 700 PM EDT for
southeastern Michigan.

&&

LAT...LON 4278 8369 4243 8366 4243 8355 4209 8354
      4207 8413 4277 8416
TIME...MOT...LOC 1826Z 270DEG 32KT 4262 8439 4236 8438 4209 8446

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...55 MPH

AA
Local storm report, Jul 26, 3:23 PM EDT, 31 minutes before
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Local storm report, Jul 26, 3:26 PM EDT, 28 minutes before
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Local storm report, Jul 26, 3:37 PM EDT, 17 minutes before
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Special weather statement, Jul 26, 3:40 PM EDT, 14 minutes before
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Local storm report, Jul 26, 3:47 PM EDT, 7 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 26, 2:12 PM EDTSpecial Weather StatementDTXBay, Midland63 min
Jul 26, 2:18 PM EDTSevere Thunderstorm WarningDTXLenawee72 min
Jul 26, 2:28 PM EDTSpecial Weather StatementDTXLivingston, Washtenaw62 min
Jul 26, 2:32 PM EDTSevere Thunderstorm WarningDTXWashtenaw58 min
Jul 26, 2:43 PM EDTSevere Thunderstorm WarningDTXLivingston60 min
Jul 26, 2:50 PM EDTSpecial Marine WarningDTX97 min
Jul 26, 2:58 PM EDTSevere Thunderstorm WarningDTXMonroe62 min
Jul 26, 3:05 PM EDTSevere Thunderstorm WarningDTXWayne55 min
Jul 26, 3:09 PM EDTSevere Thunderstorm WarningDTXOakland66 min
Jul 26, 3:28 PM EDTSevere Thunderstorm WarningDTXMacomb62 min
Jul 26, 3:40 PM EDTSpecial Weather StatementDTXBay, Saginaw, Tuscola50 min
Jul 26, 3:58 PM EDTSpecial Marine WarningDTX58 min
Jul 26, 4:06 PM EDTSevere Thunderstorm WarningDTXLapeer39 min
Jul 26, 4:45 PM EDTSpecial Weather StatementDTXSanilac60 min
Jul 26, 4:58 PM EDTSevere Thunderstorm WarningDTXSanilac49 min
Jul 26, 5:06 PM EDTSpecial Marine WarningDTX73 min
Jul 26, 6:58 PM EDTSpecial Weather StatementDTXLenawee47 min
Jul 26, 7:15 PM EDTSpecial Weather StatementDTXWashtenaw45 min
Jul 26, 7:44 PM EDTSpecial Weather StatementDTXLenawee31 min
Jul 26, 7:45 PM EDTSpecial Weather StatementDTXMonroe45 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2023Every severe thunderstorm warning in 2023

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.