Alert archive / Michigan / Special Weather Statements in 2021
Special Weather Statement, NWS Detroit, MI
NWS Detroit, MI issued this special weather statement at Jun 21, 2021, 4:01 AM EDT for 4 counties in Michigan. It was in force for 59 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 21, 2021, 4:01 AM EDT (08:01 UTC)
- Expired
- Jun 21, 2021, 5:00 AM EDT
- In force
- 59 min
- Issued by
- NWS Detroit, MI
Counties Macomb County, MI, Oakland County, MI, Washtenaw County, MI, Wayne County, MI
The radar
The Detroit radar (KDTX), 29 km from the middle of the area, began a volume at 08:03 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 00:00Z, 8.0 hours before the alert went out and 29 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.
- Mixed-layer CAPE
- 133 J/kg
- Mixed-layer CIN
- -112 J/kg
- Mixed-layer LCL
- 1501 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
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</html>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 21, 3:58 AM EDT, 3 minutes earlier.
Area forecast discussion, Jun 21, 3:58 AM EDT, 3 minutes before
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Hazardous Weather Outlook National Weather Service Detroit/Pontiac MI 507 AM EDT Sun Jun 20 2021 MIZ047>049-053>055-060>063-068>070-075-076-082-083-210930- Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-Lapeer- St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe- 507 AM EDT Sun Jun 20 2021 This hazardous weather outlook is for southeast Michigan. .DAY ONE...Today and Tonight Severe thunderstorms are likely across all of southeast Michigan tonight mainly after 8 PM. There is a marginal risk in the Tri Cities and northern Thumb, a slight risk across the I-69 corridor, and an enhanced risk mainly from the M-59 corridor south through metro Detroit to the Ohio border. There is a chance of tornadoes and large hail is likely. Hail could reach golf ball to tennis ball size with damaging wind up to 70 mph as storms moves southwest to northeast at 45 mph. Flooding rain is also likely before the pattern exits eastward early Monday. .DAYS TWO THROUGH SEVEN...Monday through Saturday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Dispatchers, please notify your emergency manager immediately. Spotter activation is likely tonight. LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-210930- 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- 507 AM EDT Sun Jun 20 2021 This hazardous weather outlook is for portions of Lake Erie, Lake Huron and Lake St Clair. .DAY ONE...Today and Tonight Thunderstorms are expected across the central Great Lakes tonight with severe storms likely south of Saginaw Bay to western Lake Erie mainly after 8 PM. There is a chance of tornadoes/waterspouts and large hail is likely. Hail could reach golf ball to tennis ball size with damaging wind up to 60 knots as storms move southwest to northeast at 40 knots. .DAYS TWO THROUGH SEVEN...Monday through Saturday A Gale Warning is in effect Monday for the north half of Lake Huron. Small Craft Advisories are in effect for Saginaw Bay and southern Lake Huron. .SPOTTER INFORMATION STATEMENT... Dispatchers, please notify your emergency manager immediately. Spotter activation is likely tonight. You can obtain your latest National Weather Service forecasts online at www.weather.gov/detroit. BT
In the hours before
Local storm report, Jun 20, 11:44 PM EDT, 4 hours 17 minutes before
PRELIMINARY LOCAL STORM REPORT
National Weather Service Detroit/Pontiac MI
1144 PM EDT SUN JUN 20 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0919 PM TSTM WND DMG 5 NNW TEMPERANCE 41.84N 83.61W
06/20/2021 Monroe MI 911 CALL CENTER
DISPATCH REPORTS MULTIPLE TREES DOWN AROUND MOROCCO RD
AND DOUGLAS RD
0926 PM TSTM WND DMG 5 SSE DUNDEE 41.90N 83.61W
06/20/2021 Monroe MI 911 CALL CENTER
DISPACTH REPORTS MULTIPLE TREES DOWN AROUND ALBAIN RD AND
DOUGLAS RD
0940 PM TSTM WND DMG 4 NE DUNDEE 42.00N 83.61W
06/20/2021 Monroe MI 911 CALL CENTER
DISPATCH REPORTS MULTIPLE TREES DOWN AROUND DAY RD AND
PLANK RD
&&
AMLocal storm report, Jun 21, 12:22 AM EDT, 3 hours 39 minutes before
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Special Weather Statement
National Weather Service Detroit/Pontiac MI
109 AM EDT Mon Jun 21 2021
MIZ082-083-210600-
Lenawee MI-Monroe MI-
109 AM EDT Mon Jun 21 2021
...SPECIAL WEATHER STATEMENT...
At 108 AM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Hudson to near Adrian to near Ida.
Movement was east at 40 mph.
Winds in excess of 30 mph will be possible with these storms.
Strong thunderstorms will be near...
Luna Pier around 115 AM EDT.
Monroe and Blissfield around 120 AM EDT.
Deerfield around 125 AM EDT.
Petersburg around 130 AM EDT.
Dundee around 135 AM EDT.
Ida around 140 AM EDT.
Maybee around 145 AM EDT.
Carleton and Britton around 155 AM EDT.
Other locations impacted by these storms include Newport, Manitou
Beach-Devils Lake, Ogden Center, Canandaigua, Erie, Woodland Beach,
Ridgeway, Stony Point, Palmyra and Bolles Harbor.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
A Severe Thunderstorm Watch remains in effect until 600 AM EDT for
southeastern Michigan.
LAT...LON 4207 8436 4209 8328 4203 8320 4203 8318
4208 8319 4207 8314 4199 8313 4190 8325
4189 8331 4182 8337 4175 8339 4173 8345
4171 8435
TIME...MOT...LOC 0508Z 258DEG 35KT 4184 8440 4189 8399 4186 8356
MannLocal storm report, Jun 21, 1:53 AM EDT, 2 hours 8 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
153 AM EDT MON JUN 21 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0941 PM TSTM WND DMG 3 SSE DETROIT 42.34N 83.10W
06/20/2021 WAYNE MI PUBLIC
TREE DOWN AND PARTIALLY BLOCKING RIGHT TURN LANE AT
INTERSECTION OF MARTIN LUTHER KING JR BLVD AND JEFFRIES
SERVICE DR. RELAYED VIA SOCIAL MEDIA PHOTO.
&&
MVSpecial weather statement, Jun 21, 3:15 AM EDT, 46 minutes before
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</html>The office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 8:35 PM EDT | Special Marine Warning | DTX | 55 min | |
| Jun 20, 8:45 PM EDT | Special Weather Statement | DTX | Wayne | 60 min |
| Jun 20, 8:53 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 67 min |
| Jun 20, 9:02 PM EDT | Severe Thunderstorm Warning | DTX | Monroe | 58 min |
| Jun 20, 9:12 PM EDT | Severe Thunderstorm Warning | DTX | Wayne | 63 min |
| Jun 20, 9:20 PM EDT | Special Marine Warning | DTX | 85 min | |
| Jun 20, 9:23 PM EDT | Special Marine Warning | DTX | 45 min | |
| Jun 20, 9:34 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Shiawassee | 44 min |
| Jun 20, 9:42 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee, Monroe, Washtenaw, Wayne | 63 min |
| Jun 20, 9:56 PM EDT | Special Weather Statement | DTX | Macomb | 64 min |
| Jun 20, 10:07 PM EDT | Special Weather Statement | DTX | Genesee | 53 min |
| Jun 20, 10:14 PM EDT | Special Weather Statement | DTX | Oakland | 61 min |
| Jun 20, 10:25 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 41 min |
| Jun 20, 10:42 PM EDT | Special Marine Warning | DTX | 93 min | |
| Jun 20, 10:44 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 61 min |
| Jun 20, 10:54 PM EDT | Special Weather Statement | DTX | Washtenaw | 51 min |
| Jun 20, 11:09 PM EDT | Special Weather Statement | DTX | Lapeer, Saint Clair, Sanilac | 51 min |
| Jun 20, 11:36 PM EDT | Special Weather Statement | DTX | Monroe | 39 min |
| Jun 20, 11:39 PM EDT | Special Marine Warning | DTX | 66 min | |
| Jun 21, 1:09 AM EDT | Special Weather Statement | DTX | Lenawee, Monroe | 51 min |
| Jun 21, 3:15 AM EDT | Special Weather Statement | DTX | Lenawee, Livingston, Washtenaw | 60 min |
| Jun 21, 3:35 AM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 40 min |
| Jun 21, 3:54 AM EDT | Severe Thunderstorm Warning | DTX | Monroe | 51 min |
| Jun 21, 3:56 AM EDT | Special Marine Warning | DTX | 35 min | |
| Jun 21, 4:58 AM EDT | Special Weather Statement | DTX | Macomb, Saint Clair | 62 min |
| Jun 21, 5:01 AM EDT | Special Marine Warning | DTX | 34 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.