Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 93, NWS Detroit, MI
NWS Detroit, MI issued this severe thunderstorm warning at Aug 28, 2021, 10:00 PM EDT for Shiawassee County, Michigan. It was in force for 20 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
- Aug 28, 2021, 10:00 PM EDT (02:00 UTC)
- Expired
- Aug 28, 2021, 10:20 PM EDT
- In force
- 20 min
- Issued by
- NWS Detroit, MI
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Shiawassee County, MI
The radar
The Detroit radar (KDTX), 59 km from the middle of the area, began a volume at 02:00 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, 2.0 hours before the alert went out and 61 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
- 1935 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 1213 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
505 WUUS53 KDTX 290200 SVRDTX MIC155-290245- /O.NEW.KDTX.SV.W.0093.210829T0200Z-210829T0245Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Detroit/Pontiac MI 1000 PM EDT Sat Aug 28 2021 The National Weather Service in Detroit/Pontiac has issued a * Severe Thunderstorm Warning for... Eastern Shiawassee County in southeastern Michigan... * Until 1045 PM EDT. * At 1000 PM EDT, a severe thunderstorm was located over Corunna, or near Owosso, moving east at 25 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * This severe thunderstorm will be near... Bancroft around 1005 PM EDT. Durand around 1015 PM EDT. Lennon around 1020 PM EDT. Other locations impacted by this severe thunderstorm include Juddville and Vernon. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4306 8419 4309 8393 4282 8393 4288 8417 TIME...MOT...LOC 0200Z 273DEG 21KT 4297 8410 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ DG
1 follow-up statement
057
WWUS53 KDTX 290220
SVSDTX
Severe Weather Statement
National Weather Service Detroit/Pontiac MI
1020 PM EDT Sat Aug 28 2021
MIC155-290227-
/O.CAN.KDTX.SV.W.0093.000000T0000Z-210829T0245Z/
Shiawassee MI-
1020 PM EDT Sat Aug 28 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN SHIAWASSEE COUNTY IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled. However gusty winds are still possible with this
thunderstorm.
LAT...LON 4306 8419 4309 8393 4282 8393 4288 8417
TIME...MOT...LOC 0217Z 273DEG 21KT 4296 8396
$$
DGThe office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 8:18 PM EDT | Special Weather Statement | DTX | Saginaw | 72 min |
| Aug 28, 8:22 PM EDT | Special Weather Statement | DTX | Saint Clair, Sanilac | 68 min |
| Aug 28, 10:17 PM EDT | Special Weather Statement | DTX | Genesee | 28 min |
| Aug 29, 1:53 AM EDT | Special Weather Statement | DTX | Bay, Midland | 67 min |
| Aug 29, 2:16 AM EDT | Severe Thunderstorm Warning | DTX | Bay, Midland | 44 min |
| Aug 29, 2:32 AM EDT | Special Marine Warning | DTX | 42 min | |
| Aug 29, 3:40 PM EDT | Special Weather Statement | DTX | Bay, Midland | 65 min |
| Aug 29, 3:54 PM EDT | Special Marine Warning | DTX | 108 min | |
| Aug 29, 4:07 PM EDT | Special Weather Statement | DTX | Saginaw, Shiawassee | 83 min |
| Aug 29, 4:30 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw, Shiawassee | 75 min |
| Aug 29, 4:38 PM EDT | Special Weather Statement | DTX | Huron | 67 min |
| Aug 29, 4:58 PM EDT | Severe Thunderstorm Warning | DTX | Huron | 62 min |
| Aug 29, 5:11 PM EDT | Severe Thunderstorm Warning | DTX | Bay, Genesee, Tuscola | 79 min |
| Aug 29, 5:25 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 65 min |
| Aug 29, 5:32 PM EDT | Special Marine Warning | DTX | 118 min | |
| Aug 29, 5:56 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 64 min |
| Aug 29, 5:58 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer | 62 min |
| Aug 29, 6:00 PM EDT | Severe Thunderstorm Warning | DTX | Huron | 59 min |
| Aug 29, 6:13 PM EDT | Severe Thunderstorm Warning | DTX | Sanilac | 77 min |
| Aug 29, 6:37 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Saint Clair | 83 min |
| Aug 29, 6:45 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 75 min |
| Aug 29, 6:51 PM EDT | Special Marine Warning | DTX | 114 min | |
| Aug 29, 7:00 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 57 min |
| Aug 29, 7:23 PM EDT | Special Weather Statement | DTX | Monroe | 67 min |
| Aug 29, 7:29 PM EDT | Special Weather Statement | DTX | Wayne | 61 min |
| Aug 29, 7:30 PM EDT | Special Marine Warning | DTX | 68 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2021Every severe thunderstorm warning 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.