Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 47, NWS Detroit, MI
NWS Detroit, MI issued this severe thunderstorm warning at Jul 24, 2021, 4:03 PM EDT for Bay County, Midland County, Saginaw County, Michigan. It was in force for 57 min. 9 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, 4:03 PM EDT (20:03 UTC)
- Expired
- Jul 24, 2021, 5:00 PM EDT
- In force
- 57 min
- Issued by
- NWS Detroit, MI
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Bay County, MI, Midland County, MI, Saginaw County, MI
The radar
The Detroit radar (KDTX), 112 km from the middle of the area, began a volume at 20:03 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 24, 4:07 PM EDT | TSTM WND DMG | 4 N Midland, MI | REPORTS OF SEVERAL TREES AND POWERLINES DOWN IN LARKIN TWP |
| Jul 24, 4:07 PM EDT | TSTM WND DMG | 4 N Midland, MI | REPORTS OF SEVERAL TREES AND POWERLINES DOWN IN LARKIN TWP. |
| Jul 24, 4:25 PM EDT | TSTM WND DMG | 1 Wsw Midland, MI | REPORTS OF SEVERAL TREES AND POWERLINES DOWN |
| Jul 24, 4:25 PM EDT | TSTM WND DMG | 1 Wsw Midland, MI | REPORTS OF SEVERAL TREES AND POWERLINES DOWN. |
| Jul 24, 4:36 PM EDT | TSTM WND DMG | 5 W Auburn, MI | LARGE TREE LIMB SNAPPED REPORTED VIA SOCIAL MEDIA PHOTO. |
| Jul 24, 4:45 PM EDT | TSTM WND DMG | 4 Sw Freeland, MI | 12 TO 14 INCH DIAMETER TREE DOWN. RELAYED VIA SOCIAL MEDIA PHOTO. |
| Jul 24, 4:55 PM EDT | TSTM WND GST 55 | 5 S Auburn, MI | MEASURED AT MBS INTERNATIONAL AIRPORT |
| Jul 24, 4:55 PM EDT | TSTM WND GST 55 | 5 S Auburn, MI | MEASURED AT MBS INTERNATIONAL AIRPORT. |
| Jul 24, 5:09 PM EDT | FUNNEL CLOUD | 1 S Saginaw, MI | TRAINED SPOTTER REPORTS FUNNEL CLOUD 1 MILE SOUTH OF SAGINAW. |
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, 8.1 hours before the alert went out and 112 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.
228
WUUS53 KDTX 242003
SVRDTX
MIC017-111-145-242100-
/O.NEW.KDTX.SV.W.0047.210724T2003Z-210724T2100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Detroit/Pontiac MI
403 PM EDT Sat Jul 24 2021
The National Weather Service in Detroit/Pontiac has issued a
* Severe Thunderstorm Warning for...
Southern Bay County in southeastern Michigan...
Northern Saginaw County in southeastern Michigan...
Midland County in southeastern Michigan...
* Until 500 PM EDT.
* At 402 PM EDT, severe thunderstorms were located along a line
extending from near Rhodes to 6 miles southwest of Mount Pleasant,
moving east-southeast 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...
Pleasant Valley and Merrill.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4370 8461 4367 8389 4360 8370 4338 8370
4329 8437 4347 8437 4347 8461
TIME...MOT...LOC 2002Z 288DEG 25KT 4385 8414 4354 8488
HAIL...0.75IN
WIND...60MPH
$$
KDK3 follow-up statements
400
WWUS53 KDTX 242021
SVSDTX
Severe Weather Statement
National Weather Service Detroit/Pontiac MI
421 PM EDT Sat Jul 24 2021
MIC017-111-145-242100-
/O.CON.KDTX.SV.W.0047.000000T0000Z-210724T2100Z/
Bay MI-Saginaw MI-Midland MI-
421 PM EDT Sat Jul 24 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR SOUTHERN BAY...NORTHERN SAGINAW AND SOUTHERN MIDLAND COUNTIES...
At 420 PM EDT, severe thunderstorms were located along a line
extending from near Pinconning to near Midland to near Pleasant
Valley, moving east at 35 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Saginaw, Midland, Bay City, Auburn, Sanford, Freeland, Kawkawlin,
Essexville, Zilwaukee, Merrill, Bridgeport, Pleasant Valley, Munger,
Carrollton, Nelson, Swan Creek, Garfield, Arthur, Gera and Buena
Vista Township.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4358 8460 4369 8448 4367 8389 4360 8370
4338 8370 4329 8437 4347 8437 4347 8461
TIME...MOT...LOC 2020Z 290DEG 29KT 4381 8398 4365 8427 4348 8458
TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
$$
TF804
WWUS53 KDTX 242036
SVSDTX
Severe Weather Statement
National Weather Service Detroit/Pontiac MI
436 PM EDT Sat Jul 24 2021
MIC017-111-145-242100-
/O.CON.KDTX.SV.W.0047.000000T0000Z-210724T2100Z/
Bay MI-Saginaw MI-Midland MI-
436 PM EDT Sat Jul 24 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR SOUTHERN BAY...NORTHERN SAGINAW AND SOUTHEASTERN MIDLAND
COUNTIES...
At 435 PM EDT, severe thunderstorms were located along a line
extending from near Essexville to Auburn to near Merrill, 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...
Saginaw, Midland, Bay City, Auburn, Freeland, Kawkawlin, Essexville,
Zilwaukee, Merrill, Bridgeport, Munger, Carrollton, Nelson, Swan
Creek, Garfield, Arthur, Gera, Buena Vista Township, Indiantown and
Hemlock.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4368 8428 4367 8389 4360 8370 4338 8370
4329 8437 4347 8437 4347 8450
TIME...MOT...LOC 2035Z 291DEG 32KT 4366 8379 4359 8409 4346 8434
TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
$$
TF356
WWUS53 KDTX 242053
SVSDTX
Severe Weather Statement
National Weather Service Detroit/Pontiac MI
453 PM EDT Sat Jul 24 2021
MIC111-242103-
/O.CAN.KDTX.SV.W.0047.000000T0000Z-210724T2100Z/
Midland MI-
453 PM EDT Sat Jul 24 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MIDLAND COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
southeastern Michigan.
LAT...LON 4347 8437 4348 8434 4348 8417 4355 8417
4367 8389 4360 8370 4338 8370 4329 8437
TIME...MOT...LOC 2053Z 288DEG 30KT 4363 8365 4349 8396 4334 8432
$$
MIC017-145-242100-
/O.CON.KDTX.SV.W.0047.000000T0000Z-210724T2100Z/
Bay MI-Saginaw MI-
453 PM EDT Sat Jul 24 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR SOUTHERN BAY AND NORTHERN SAGINAW COUNTIES...
At 453 PM EDT, severe thunderstorms were located along a line
extending from near Quanicassee to near Zilwaukee to near Merrill,
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...
Saginaw, Bay City, Freeland, Essexville, Zilwaukee, Merrill, Munger,
Bridgeport, Carrollton, Nelson, Swan Creek, Garfield, Arthur, Gera,
Buena Vista Township, Indiantown, Shiawassee National Wildlife
Refuge, Hemlock and Shields.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4347 8437 4348 8434 4348 8417 4355 8417
4367 8389 4360 8370 4338 8370 4329 8437
TIME...MOT...LOC 2053Z 288DEG 30KT 4363 8365 4349 8396 4334 8432
TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
$$
TFThe 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, 4:05 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.