Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 46, NWS Detroit, MI
NWS Detroit, MI issued this severe thunderstorm warning at Jul 24, 2021, 3:38 PM EDT for Bay County, Midland County, Michigan. It was in force for 67 min. 4 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, 3:38 PM EDT (19:38 UTC)
- Expired
- Jul 24, 2021, 4:45 PM EDT
- In force
- 67 min
- Issued by
- NWS Detroit, MI
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Bay County, MI, Midland County, MI
The radar
The NCL Michigan radar (KAPX), 125 km from the middle of the area, began a volume at 19:39 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, 4:03 PM EDT | TSTM WND DMG | 3 Ne Bombay, MI | MULTIPLE REPORTS OF DOWN TREES AND POWER LINES DOWN |
| Jul 24, 4:03 PM EDT | TSTM WND DMG | 3 Ne Bombay, MI | MULTIPLE REPORTS OF DOWN TREES AND POWER LINES DOWN. |
| Jul 24, 4:17 PM EDT | TSTM WND DMG | 1 W Linwood, MI | REPORT OF A TREE DOWN ON ANDERSON RD AND MACKINAW RD |
| Jul 24, 4:17 PM EDT | TSTM WND DMG | 1 W Linwood, MI | REPORT OF A TREE DOWN ON ANDERSON RD AND MACKINAW RD. |
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, 7.6 hours before the alert went out and 139 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.
445
WUUS53 KDTX 241938
SVRDTX
MIC017-111-242045-
/O.NEW.KDTX.SV.W.0046.210724T1938Z-210724T2045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Detroit/Pontiac MI
338 PM EDT Sat Jul 24 2021
The National Weather Service in Detroit/Pontiac has issued a
* Severe Thunderstorm Warning for...
Northwestern Bay County in southeastern Michigan...
Northern Midland County in southeastern Michigan...
* Until 445 PM EDT.
* At 338 PM EDT, a severe thunderstorm was located near Beaverton, or
near Gladwin, moving east at 35 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Bentley and Pinconning.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4381 8460 4381 8437 4383 8436 4383 8417
4400 8416 4400 8405 4391 8404 4391 8391
4392 8390 4392 8387 4374 8391 4367 8389
4370 8461
TIME...MOT...LOC 1938Z 274DEG 29KT 4391 8444
TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
$$
KDK4 follow-up statements
420
WWUS53 KDTX 241954
SVSDTX
Severe Weather Statement
National Weather Service Detroit/Pontiac MI
354 PM EDT Sat Jul 24 2021
MIC017-111-242045-
/O.CON.KDTX.SV.W.0046.000000T0000Z-210724T2045Z/
Bay MI-Midland MI-
354 PM EDT Sat Jul 24 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR NORTHWESTERN BAY AND NORTHERN MIDLAND COUNTIES...
At 354 PM EDT, severe thunderstorms were located along a line
extending from Bentley to near Edenville to near Coleman, moving east
at 35 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
These severe storms will be near...
Bentley around 400 PM EDT.
Pinconning around 415 PM EDT.
Linwood around 425 PM EDT.
Other locations impacted by these severe thunderstorms include Mount
Forest, Crump, Bombay, Hope and North Bradley.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4381 8460 4381 8437 4383 8436 4383 8417
4400 8416 4400 8405 4391 8404 4391 8391
4392 8390 4392 8387 4374 8391 4367 8389
4370 8461
TIME...MOT...LOC 1954Z 286DEG 30KT 4395 8415 4381 8432 4373 8467
TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
$$
RBP265
WWUS53 KDTX 242017
SVSDTX
Severe Weather Statement
National Weather Service Detroit/Pontiac MI
417 PM EDT Sat Jul 24 2021
MIC017-111-242045-
/O.CON.KDTX.SV.W.0046.000000T0000Z-210724T2045Z/
Bay MI-Midland MI-
417 PM EDT Sat Jul 24 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR NORTHWESTERN BAY AND NORTHEASTERN MIDLAND COUNTIES...
At 417 PM EDT, severe thunderstorms were located along a line
extending from near Pinconning to near Linwood to Sanford, moving
east at 35 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
These severe storms will be near...
Pinconning and Linwood around 420 PM EDT.
Other locations impacted by these severe thunderstorms include Crump,
Bombay and Hope.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4383 8436 4383 8417 4391 8404 4391 8391
4392 8390 4392 8387 4374 8391 4367 8389
4370 8447
TIME...MOT...LOC 2017Z 277DEG 32KT 4388 8386 4374 8403 4366 8438
TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
$$
TF804
WWUS53 KDTX 242044
SVSDTX
Severe Weather Statement
National Weather Service Detroit/Pontiac MI
444 PM EDT Sat Jul 24 2021
MIC017-111-242053-
/O.EXP.KDTX.SV.W.0046.000000T0000Z-210724T2045Z/
Bay MI-Midland MI-
444 PM EDT Sat Jul 24 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN BAY AND
NORTHEASTERN MIDLAND COUNTIES WILL EXPIRE AT 445 PM EDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
southeastern Michigan.
LAT...LON 4383 8436 4383 8417 4391 8404 4391 8391
4392 8390 4392 8387 4374 8391 4367 8389
4370 8447
TIME...MOT...LOC 2043Z 274DEG 29KT 4387 8358 4373 8375 4365 8411
$$
TF344
WWUS53 KDTX 242045
SVSDTX
Severe Weather Statement
National Weather Service Detroit/Pontiac MI
445 PM EDT Sat Jul 24 2021
MIC017-111-242051-
/O.EXP.KDTX.SV.W.0046.000000T0000Z-210724T2045Z/
Bay MI-Midland MI-
445 PM EDT Sat Jul 24 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN BAY AND
NORTHEASTERN MIDLAND COUNTIES WILL EXPIRE AT 445 PM EDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
southeastern Michigan.
LAT...LON 4383 8436 4383 8417 4391 8404 4391 8391
4392 8390 4392 8387 4374 8391 4367 8389
4370 8447
TIME...MOT...LOC 2041Z 274DEG 29KT 4387 8361 4373 8378 4365 8413
$$
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, 3:51 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 |
| Jul 24, 7:56 PM EDT | Tornado Warning | DTX | Oakland | 26 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.