Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 85, NWS Detroit, MI
NWS Detroit, MI issued this severe thunderstorm warning at Aug 24, 2021, 7:45 PM EDT for Livingston County, Michigan. It was in force for 35 min. 2 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
- Aug 24, 2021, 7:45 PM EDT (23:45 UTC)
- Expired
- Aug 24, 2021, 8:20 PM EDT
- In force
- 35 min
- Issued by
- NWS Detroit, MI
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Livingston County, MI
The radar
The Detroit radar (KDTX), 40 km from the middle of the area, began a volume at 23:49 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 |
|---|---|---|---|
| Aug 24, 7:50 PM EDT | TSTM WND DMG | 6 Ne Fowlerville, MI | TREES DOWN OVER ROADWAY NEAR THE INTERSECTION OF STEINACKER AND SCHREPFER ROADS. |
| Aug 24, 8:04 PM EDT | TSTM WND DMG | Wsw Brighton, MI | LARGE TREE LIMB BLOWN DOWN ONTO THE ROAD AT THE CORNER OF SPENCER RD AND E MAIN ST IN BRIGHTON. TIME ESTIMATED BASED ON RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 11.8 hours before the alert went out and 44 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
- 298 J/kg
- Mixed-layer CIN
- -182 J/kg
- Mixed-layer LCL
- 1140 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -57 m²/s²
- 0-3 km storm-relative helicity
- -89 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
597
WUUS53 KDTX 242345
SVRDTX
MIC093-250045-
/O.NEW.KDTX.SV.W.0085.210824T2345Z-210825T0045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Detroit/Pontiac MI
745 PM EDT Tue Aug 24 2021
The National Weather Service in Detroit/Pontiac has issued a
* Severe Thunderstorm Warning for...
Livingston County in southeastern Michigan...
* Until 845 PM EDT.
* At 745 PM EDT, severe thunderstorms were located along a line
extending from Byron to Oak Grove to 7 miles southeast of
Williamston, moving southeast at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Severe thunderstorms will be near...
Howell and Oak Grove around 750 PM EDT.
Hartland and Gregory around 805 PM EDT.
Brighton around 810 PM EDT.
Pinckney around 815 PM EDT.
Hamburg around 825 PM EDT.
Whitmore Lake around 830 PM EDT.
Other locations impacted by these severe thunderstorms include
Parkers Corners, Lakeland, Plainfield, Island Lake State Recreation
Area, Chilson, Unadilla, Conway Township, Hell, Tyrone Township and
Deerfield Township.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4278 8369 4243 8367 4243 8412 4245 8414
4256 8414 4277 8416
TIME...MOT...LOC 2345Z 307DEG 28KT 4280 8392 4272 8394 4260 8420
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Mann2 follow-up statements
334
WWUS53 KDTX 250006
SVSDTX
Severe Weather Statement
National Weather Service Detroit/Pontiac MI
806 PM EDT Tue Aug 24 2021
MIC093-250045-
/O.CON.KDTX.SV.W.0085.000000T0000Z-210825T0045Z/
Livingston MI-
806 PM EDT Tue Aug 24 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR LIVINGSTON COUNTY...
At 806 PM EDT, severe thunderstorms were located along a line
extending from near Fenton to near Hartland to near Howell, moving
east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
These severe storms will be near...
Hartland around 810 PM EDT.
Brighton around 820 PM EDT.
Hamburg around 825 PM EDT.
Whitmore Lake around 835 PM EDT.
Other locations impacted by these severe thunderstorms include Island
Lake State Recreation Area, Chilson, Lakeland, Conway Township,
Tyrone Township and Deerfield Township.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4278 8369 4243 8367 4243 8391 4265 8410
4277 8416
TIME...MOT...LOC 0006Z 290DEG 25KT 4277 8374 4269 8376 4258 8391
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Mann982
WWUS53 KDTX 250020
SVSDTX
Severe Weather Statement
National Weather Service Detroit/Pontiac MI
820 PM EDT Tue Aug 24 2021
MIC093-250030-
/O.CAN.KDTX.SV.W.0085.000000T0000Z-210825T0045Z/
Livingston MI-
820 PM EDT Tue Aug 24 2021
...THE SEVERE THUNDERSTORM WARNING FOR LIVINGSTON COUNTY IS
CANCELLED...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled. However gusty winds are
still possible with these thunderstorms.
LAT...LON 4278 8369 4243 8367 4243 8391 4265 8410
4277 8416
TIME...MOT...LOC 0019Z 307DEG 28KT 4271 8362 4263 8364 4252 8379
$$
MannThe office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 24, 6:01 PM EDT | Special Weather Statement | DTX | Bay, Midland, Saginaw | 89 min |
| Aug 24, 6:07 PM EDT | Severe Thunderstorm Warning | DTX | Midland | 53 min |
| Aug 24, 6:38 PM EDT | Special Weather Statement | DTX | Bay, Saginaw | 52 min |
| Aug 24, 6:42 PM EDT | Special Marine Warning | DTX | 93 min | |
| Aug 24, 6:47 PM EDT | Severe Thunderstorm Warning | DTX | Bay | 28 min |
| Aug 24, 6:52 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw | 53 min |
| Aug 24, 7:08 PM EDT | Special Weather Statement | DTX | Shiawassee | 67 min |
| Aug 24, 7:13 PM EDT | Severe Thunderstorm Warning | DTX | Shiawassee | 62 min |
| Aug 24, 7:30 PM EDT | Severe Thunderstorm Warning | DTX | Genesee | 45 min |
| Aug 24, 7:52 PM EDT | Special Weather Statement | DTX | Huron, Sanilac | 53 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.