Alert archive / Michigan / Tornado Warnings in 2021
Tornado Warning 10, NWS Detroit, MI
NWS Detroit, MI issued this tornado warning at Jul 24, 2021, 7:56 PM EDT for Oakland County, Michigan. It was in force for 26 min. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 24, 2021, 7:56 PM EDT (23:56 UTC)
- Expired
- Jul 24, 2021, 8:22 PM EDT
- In force
- 26 min
- Issued by
- NWS Detroit, MI
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
County Oakland County, MI
The radar
The Detroit radar (KDTX), 12 km from the middle of the area, began a volume at 23:55 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 24, 8:01 PM EDT | TORNADO | 1 Ese White Lake, MI | REPORTED TORNADO NEAR OXBOW LAKE. DAMAGE TO COTTAGE. |
| Jul 24, 8:02 PM EDT | TSTM WND DMG | 3 Ssw Clarkston, MI | SEVERAL TREES DOWN OVER MACEDAY LAKE ROAD. LARGE TREE ALSO FELL ONTO A HOME LESS THAN A MILE EAST OF WILLIAMS LAKE ROAD MARKET ON WILLIAMS LAKE ROAD. TIME ESTIMATED BASED ON RADAR. |
| Jul 24, 8:11 PM EDT | TSTM WND GST 60 | 5 S Clarkston, MI | MEASURED BY PTK ASOS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 24, 3:16 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 11.9 hours before the alert went out and 11 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
- 588 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 557 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 113 m²/s²
- 0-3 km storm-relative helicity
- 129 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.8
The text
As transmitted.
366
WFUS53 KDTX 242356
TORDTX
MIC125-250045-
/O.NEW.KDTX.TO.W.0010.210724T2356Z-210725T0045Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Detroit/Pontiac MI
756 PM EDT Sat Jul 24 2021
The National Weather Service in Detroit/Pontiac has issued a
* Tornado Warning for...
East central Oakland County in southeastern Michigan...
* Until 845 PM EDT.
* At 756 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Clarkston, or 8 miles northeast of Milford, moving
east at 25 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* Locations impacted include...
Pontiac, Birmingham, Royal Oak, Troy and Rochester.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4264 8352 4270 8350 4269 8311 4252 8311
TIME...MOT...LOC 2356Z 284DEG 22KT 4266 8347
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
KDK3 follow-up statements
335
WWUS53 KDTX 250002
SVSDTX
Severe Weather Statement
National Weather Service Detroit/Pontiac MI
802 PM EDT Sat Jul 24 2021
MIC125-250045-
/O.CON.KDTX.TO.W.0010.000000T0000Z-210725T0045Z/
Oakland MI-
802 PM EDT Sat Jul 24 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM EDT FOR EAST
CENTRAL OAKLAND COUNTY...
At 802 PM EDT, a confirmed tornado was located near Clarkston, or 8
miles west of Pontiac, moving east at 15 mph.
HAZARD...Damaging tornado.
SOURCE...Radar confirmed tornado.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornado will be near...
Pontiac around 835 PM EDT.
Troy and Birmingham around 845 PM EDT.
Other locations impacted by this tornadic thunderstorm include
Bloomfield Hills, Rochester Hills, Keego Harbor, Waterford,
Bloomfield Township, White Lake, Clawson, Sylvan Lake, Auburn Hills
and Lake Angelus.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
&&
LAT...LON 4264 8352 4270 8350 4269 8311 4252 8311
TIME...MOT...LOC 0002Z 279DEG 13KT 4265 8345
TORNADO...OBSERVED
HAIL...<.75IN
$$
RBP317
WWUS53 KDTX 250012 RRA
SVSDTX
Severe Weather Statement
National Weather Service Detroit/Pontiac MI
812 PM EDT Sat Jul 24 2021
MIC125-250045-
/O.CON.KDTX.TO.W.0010.000000T0000Z-210725T0045Z/
Oakland MI-
812 PM EDT Sat Jul 24 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM EDT FOR EAST
CENTRAL OAKLAND COUNTY...
At 811 PM EDT, a severe thunderstorm capable of producing a tornado
was located over West Bloomfield, or near Pontiac, moving southeast
at 25 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Troy, Pontiac, Royal Oak, Birmingham, Rochester, Rochester Hills,
Madison Heights, Auburn Hills, Clawson, Bloomfield Hills, Keego
Harbor, Sylvan Lake, Lake Angelus, Waterford and Bloomfield Township.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4262 8344 4270 8338 4269 8311 4252 8311
TIME...MOT...LOC 0011Z 318DEG 23KT 4259 8335
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
RBP274
WWUS53 KDTX 250022
SVSDTX
Severe Weather Statement
National Weather Service Detroit/Pontiac MI
822 PM EDT Sat Jul 24 2021
MIC125-250030-
/O.CAN.KDTX.TO.W.0010.000000T0000Z-210725T0045Z/
Oakland MI-
822 PM EDT Sat Jul 24 2021
...THE TORNADO WARNING FOR EAST CENTRAL OAKLAND COUNTY IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled. However, a Severe
Thunderstorm Warning still remains in effect for southern Oakland
County until 900 PM EDT.
A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
southeastern Michigan.
LAT...LON 4262 8344 4270 8338 4269 8311 4252 8311
TIME...MOT...LOC 0019Z 284DEG 22KT 4258 8327
$$
RBPThe office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 2:25 PM EDT | Special Marine Warning | DTX | 95 min | |
| Jul 24, 3:38 PM EDT | Severe Thunderstorm Warning | DTX | Bay, Midland | 67 min |
| Jul 24, 3:51 PM EDT | Special Marine Warning | DTX | 114 min | |
| Jul 24, 4:03 PM EDT | Severe Thunderstorm Warning | DTX | Bay, Midland, Saginaw | 57 min |
| Jul 24, 4:05 PM EDT | Special Marine Warning | DTX | 55 min | |
| Jul 24, 4:08 PM EDT | Severe Thunderstorm Warning | DTX | Huron | 67 min |
| Jul 24, 4:26 PM EDT | Tornado Warning | DTX | Huron | 37 min |
| Jul 24, 4:37 PM EDT | Severe Thunderstorm Warning | DTX | Huron, Sanilac, Tuscola | 53 min |
| Jul 24, 4:46 PM EDT | Tornado Warning | DTX | Saginaw | 44 min |
| Jul 24, 4:57 PM EDT | Severe Thunderstorm Warning | DTX | Bay, Genesee, Saginaw, Shiawassee | 63 min |
| Jul 24, 5:11 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Lapeer, Tuscola | 64 min |
| Jul 24, 5:23 PM EDT | Severe Thunderstorm Warning | DTX | Tuscola | 36 min |
| Jul 24, 5:49 PM EDT | Severe Thunderstorm Warning | DTX | Sanilac | 37 min |
| Jul 24, 6:06 PM EDT | Severe Thunderstorm Warning | DTX | Shiawassee | 54 min |
| Jul 24, 6:07 PM EDT | Special Marine Warning | DTX | 68 min | |
| Jul 24, 6:11 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Lapeer | 64 min |
| Jul 24, 6:21 PM EDT | Tornado Warning | DTX | Genesee | 22 min |
| Jul 24, 6:43 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer | 62 min |
| Jul 24, 7:07 PM EDT | Special Weather Statement | DTX | Livingston, Macomb, Oakland, Shiawassee | 53 min |
| Jul 24, 7:19 PM EDT | Areal Flood Advisory | DTX | Genesee, Lapeer, Oakland, Shiawassee | 3 hr |
| Jul 24, 7:40 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Oakland | 80 min |
| Jul 24, 7:52 PM EDT | Tornado Warning | DTX | Macomb | 22 min |
Nearby
Tornado Warnings in Michigan, 2021Every tornado warning in 2021Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.