Alert archive / Michigan / Special Weather Statements in 2021

Special Weather Statement, NWS Detroit, MI

July 6, 2021Oakland County, Michigan

NWS Detroit, MI issued this special weather statement at Jul 6, 2021, 10:51 PM EDT for Oakland County, Michigan. It was in force for 24 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 6, 2021, 10:51 PM EDT (02:51 UTC)
Expired: Jul 6, 2021, 11:15 PM EDT
In force: 24 min
Issued by: NWS Detroit, MI

County Oakland County, MI

The radar

The Detroit radar (KDTX), 21 km from the middle of the area, began a volume at 02:52 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 00:00Z, 2.9 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-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: 680 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 1346 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 28 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 Jul 6, 8:48 PM EDT, 2 hours 3 minutes earlier.

Area forecast discussion, Jul 6, 8:48 PM EDT, 2 hours 3 minutes before

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Hazardous weather outlook, Jul 6, 3:12 PM EDT, 7 hours 39 minutes before

Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
312 PM EDT Tue Jul 6 2021

MIZ047>049-053>055-060>063-068>070-075-076-082-083-070900-
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-Lapeer-
St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe-
312 PM EDT Tue Jul 6 2021

This hazardous weather outlook is for portions of southeast
Michigan.

.DAY ONE...This Afternoon and Tonight

There will be a chance of thunderstorms from late afternoon through
tonight. While severe weather is not expected, a few stronger storms
may produce wind gusts to 50 mph as well as very heavy downpours.
Storm movement will be from west to east at 25 mph.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Thunderstorms are expected from Wednesday into Wednesday night with
small chance of severe weather from roughly the M-59 corridor south.
Damaging wind gusts to 60 mph may occur with a few of the storms.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-070900-
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-
312 PM EDT Tue Jul 6 2021

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

.DAY ONE...This Afternoon and Tonight

There will be a chance of thunderstorms from late afternoon through
tonight. While severe weather is not expected, a few stronger storms
may produce wind gusts to 40 knots as well as very heavy downpours.
Storm movement will be from west to east at 20 knots.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Thunderstorms are expected from Wednesday into Wednesday night with
small chance of severe weather from Lake St Clair south to western
Lake Erie.. Damaging wind gusts to 50 knots may occur with a few of
the storms.

.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.

DG

In the hours before

Special weather statement, Jul 6, 10:13 PM EDT, 38 minutes before

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Local storm report, Jul 6, 10:25 PM EDT, 26 minutes before

PRELIMINARY LOCAL STORM REPORT
National Weather Service Detroit/Pontiac MI
1025 PM EDT TUE JUL 6 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0702 PM     MARINE TSTM WIND 5 ESE MOUNT CLEMENS     42.57N 82.80W
07/06/2021  M69 MPH          Macomb             MI   MESONET

            MEASURED GUST AT LAKE ST. CLAIR METROPARK.

&&

SF

Local storm report, Jul 6, 10:30 PM EDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
National Weather Service Detroit/Pontiac MI
1030 PM EDT TUE JUL 6 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0720 PM     MARINE TSTM WIND 4 WSW NEW BALTIMORE     42.65N 82.80W
07/06/2021  M49 MPH          Macomb             MI   MESONET

            HARBOR DR MESONET.

&&

SF

Local storm report, Jul 6, 10:35 PM EDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
National Weather Service Detroit/Pontiac MI
1035 PM EDT TUE JUL 6 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1015 PM     TSTM WND GST     3 N FENTON              42.84N 83.73W
07/06/2021  M56 MPH          Genesee            MI   MESONET

            LAKE FENTON - CRANE COVE.

&&

SF

Local storm report, Jul 6, 10:43 PM EDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
National Weather Service Detroit/Pontiac MI
1043 PM EDT TUE JUL 6 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0610 PM     TSTM WND GST     2 SSE HARTLAND          42.63N 83.74W
07/05/2021  M50.00 MPH       Livingston         MI   MESONET

            LONG LAKE CT.

&&

SF

Special weather statement, Jul 6, 10:51 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Detroit/Pontiac MI
1051 PM EDT Tue Jul 6 2021

MIZ069-070315-
Oakland MI-
1051 PM EDT Tue Jul 6 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN OAKLAND COUNTY UNTIL
1115 PM EDT...

At 1051 PM EDT, Doppler radar was tracking a strong thunderstorm near
Clarkston, or near Pontiac, moving northeast at 25 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

This strong thunderstorm will be near...
  Oxford around 1100 PM EDT.
  Rochester around 1115 PM EDT.

Other locations impacted by this storm include Rochester Hills,
Lakeville, Leonard, Lake Orion, Auburn Hills, Lake Angelus and
Waterford.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4265 8309 4263 8334 4278 8343 4288 8310
TIME...MOT...LOC 0251Z 245DEG 20KT 4273 8331

SC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 8:06 PM EDT	Special Weather Statement	DTX	Saint Clair	54 min
Jul 6, 8:07 PM EDT	Special Marine Warning	DTX		53 min
Jul 6, 8:26 PM EDT	Special Marine Warning	DTX		79 min
Jul 6, 9:22 PM EDT	Special Weather Statement	DTX	Saginaw	53 min
Jul 6, 9:31 PM EDT	Severe Thunderstorm Warning	DTX	Saginaw	25 min
Jul 6, 9:37 PM EDT	Special Marine Warning	DTX		21 min
Jul 6, 9:45 PM EDT	Severe Thunderstorm Warning	DTX	Huron	41 min
Jul 6, 10:13 PM EDT	Special Weather Statement	DTX	Oakland	62 min
Jul 6, 10:16 PM EDT	Severe Thunderstorm Warning	DTX	Lapeer, Tuscola	45 min
Jul 6, 10:49 PM EDT	Severe Thunderstorm Warning	DTX	Sanilac	32 min
Jul 6, 11:00 PM EDT	Special Weather Statement	DTX	Saginaw	30 min
Jul 7, 3:38 AM EDT	Small Craft Advisory	DTX		24 hr
Jul 7, 12:35 PM EDT	Special Weather Statement	DTX	Huron	70 min
Jul 7, 1:43 PM EDT	Special Weather Statement	DTX	Huron	47 min
Jul 7, 1:49 PM EDT	Severe Thunderstorm Warning	DTX	Shiawassee	41 min
Jul 7, 1:54 PM EDT	Special Weather Statement	DTX	Livingston	51 min
Jul 7, 2:08 PM EDT	Special Weather Statement	DTX	Lenawee	52 min
Jul 7, 2:24 PM EDT	Special Marine Warning	DTX		48 min
Jul 7, 2:39 PM EDT	Severe Thunderstorm Warning	DTX	Monroe	50 min
Jul 7, 2:41 PM EDT	Special Marine Warning	DTX		65 min
Jul 7, 2:47 PM EDT	Special Weather Statement	DTX	Oakland	43 min
Jul 7, 2:47 PM EDT	Severe Thunderstorm Warning	DTX	Lapeer, Oakland	58 min
Jul 7, 2:53 PM EDT	Special Weather Statement	DTX	Saint Clair	37 min
Jul 7, 2:54 PM EDT	Severe Thunderstorm Warning	DTX	Oakland	46 min
Jul 7, 3:10 PM EDT	Severe Thunderstorm Warning	DTX	Saint Clair	65 min
Jul 7, 3:11 PM EDT	Special Marine Warning	DTX		105 min
Jul 7, 3:26 PM EDT	Severe Thunderstorm Warning	DTX	Macomb	49 min
Jul 7, 3:38 PM EDT	Severe Thunderstorm Warning	DTX	Livingston, Washtenaw	67 min
Jul 7, 3:51 PM EDT	Special Weather Statement	DTX	Oakland	84 min
Jul 7, 4:15 PM EDT	Severe Thunderstorm Warning	DTX	Saint Clair	30 min
Jul 7, 4:18 PM EDT	Severe Thunderstorm Warning	DTX	Oakland	57 min
Jul 7, 5:07 PM EDT	Special Weather Statement	DTX	Wayne	53 min
Jul 7, 5:08 PM EDT	Special Marine Warning	DTX		68 min
Jul 7, 5:09 PM EDT	Severe Thunderstorm Warning	DTX	Macomb	51 min
Jul 7, 5:31 PM EDT	Areal Flood Advisory	DTX	Macomb, Oakland	112 min
Jul 7, 5:44 PM EDT	Special Weather Statement	DTX	Macomb	31 min
Jul 7, 7:07 PM EDT	Special Weather Statement	DTX	Monroe	53 min
Jul 7, 7:22 PM EDT	Areal Flood Advisory	DTX	Genesee	99 min

Nearby

Special Weather Statements in Michigan, 2021 Every 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.