Alert archive / Michigan / Special Weather Statements in 2021

Special Weather Statement, NWS Detroit, MI

June 19, 2021Oakland County, Michigan

NWS Detroit, MI issued this special weather statement at Jun 19, 2021, 4:23 PM EDT for Oakland County, Michigan. It was in force for 52 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
Jun 19, 2021, 4:23 PM EDT (20:23 UTC)
Expired
Jun 19, 2021, 5:15 PM EDT
In force
52 min
Issued by
NWS Detroit, MI

County Oakland County, MI

The radar

The Detroit radar (KDTX), 16 km from the middle of the area, began a volume at 20:27 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, 8.4 hours before the alert went out and 18 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 2021-06-19Temperature 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 2021-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 66 square meters per square second.1939587897117136Sfc1 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
2433 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
66 m²/s²
0-3 km storm-relative helicity
133 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Jun 19, 3:26 PM EDT, 57 minutes earlier.

Area forecast discussion, Jun 19, 3:26 PM EDT, 57 minutes before
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Hazardous weather outlook, Jun 19, 4:02 PM EDT, 21 minutes before
Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
402 PM EDT Sat Jun 19 2021

MIZ047>049-053>055-060>063-068>070-075-076-082-083-201100-
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-Lapeer-
St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe-
402 PM EDT Sat Jun 19 2021

This hazardous weather outlook is for southeast Michigan.

.DAY ONE...This Afternoon and Tonight

An isolated marginally severe thunderstorm producing a wind gust to
60 mph remains possible along and south of M-59 for another couple
of hours before activity dissipates by sunset. Storm motion will be
southeast at 35 mph.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Severe thunderstorms are possible Sunday evening (after 7 PM) and/or
Sunday night as a warm front lifts into the area during the evening,
and strong cold front pushes through late Sunday night. Damaging
winds of 60-70 MPH will be the main hazard, with the best chance
south of I-69. Isolated tornadoes, flooding rain, and large hail will
be the secondary hazards.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-201100-
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-
402 PM EDT Sat Jun 19 2021

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

.DAY ONE...This Afternoon and Tonight

An isolated marginally severe thunderstorm producing a wind gust to
50 knots remains possible over Lake St. Clair and Lake Erie for
another couple of hours before activity dissipates by sunset. Storm
motion will be southeast at 35 knots.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Severe thunderstorms are possible Sunday evening (after 7 PM) and/or
Sunday night as a warm front lifts into the area during the evening,
and strong cold front pushes through late Sunday night. Wind gusts of
50 knots or greater will be the main hazard.

Winds will be strong behind the front on Monday as well, with gusts
at least to 30 knots over Lake Huron.

.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, Jun 19, 10:36 AM EDT, 5 hours 47 minutes before
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Special weather statement, Jun 19, 3:10 PM EDT, 1 hour 13 minutes before
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Special weather statement, Jun 19, 3:38 PM EDT, 45 minutes before
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Special weather statement, Jun 19, 4:23 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 19, 9:47 AM EDTSpecial Weather StatementDTXLenawee58 min
Jun 19, 10:36 AM EDTSpecial Weather StatementDTXMonroe54 min
Jun 19, 3:10 PM EDTSpecial Weather StatementDTXShiawassee35 min
Jun 19, 3:38 PM EDTSpecial Weather StatementDTXLivingston52 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.