Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 24, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Aug 10, 2021, 10:45 PM EDT for 6 counties in Michigan. It was in force for 45 min. 5 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 10, 2021, 10:45 PM EDT (02:45 UTC)
- Expired
- Aug 10, 2021, 11:30 PM EDT
- In force
- 45 min
- Issued by
- NWS Gaylord, MI
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Hail
- 0.88 in
- Wind
- 70.0 mph
Counties Benzie County, MI, Grand Traverse County, MI, Kalkaska County, MI, Leelanau County, MI, Missaukee County, MI, Wexford County, MI
The radar
The NCL Michigan radar (KAPX), 54 km from the middle of the area, began a volume at 02:45 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 10, 10:45 PM EDT | HAIL 0.75 | 2 Sw Greilickville, MI | FROM TV 7/4. |
| Aug 10, 11:00 PM EDT | TSTM WND DMG | Kalkaska, MI | WIDESPREAD TREE AND POWER LINE DAMAGE OVER NORTHERN HALF OF COUNTY BETWEEN APPROXIMATELY 1055 PM AND 1125 PM. |
| Aug 10, 11:00 PM EDT | TSTM WND GST 49 | 2 Se Traverse City, MI | ASOS STATION KTVC TRAVERSE CITY - CHERRY CAPITAL AIRPORT. |
| Aug 10, 11:00 PM EDT | TSTM WND GST 58 | 3 N Bates, MI | MESONET STATION MIWMT WILLIAMSBURG. |
| Aug 10, 11:00 PM EDT | TSTM WND GST 59 | 1 Ne Bingham, MI | MESONET STATION MINWM 0.8 NE BINGHAM (MAWN). |
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 |
|---|---|---|---|
| Aug 10, 8:38 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Alpena, MI (KAPX), launched 00:00Z, 2.8 hours before the alert went out and 236 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
- 579 J/kg
- Mixed-layer CIN
- -163 J/kg
- Mixed-layer LCL
- 1058 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.8
The text
As transmitted.
734
WUUS53 KAPX 110245
SVRAPX
MIC019-055-079-089-113-165-110330-
/O.NEW.KAPX.SV.W.0024.210811T0245Z-210811T0330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Gaylord MI
1045 PM EDT Tue Aug 10 2021
The National Weather Service in Gaylord has issued a
* Severe Thunderstorm Warning for...
Southeastern Leelanau County in northern Michigan...
Northeastern Benzie County in northern Michigan...
Northeastern Wexford County in northern Michigan...
Grand Traverse County in northern Michigan...
Kalkaska County in northern Michigan...
Northern Missaukee County in northern Michigan...
* Until 1130 PM EDT.
* At 1044 PM EDT, severe thunderstorms were located along a line
extending from near Traverse City State Park to near Spider Lake to
Interlochen, moving southeast at 50 mph.
HAZARD...70 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to
mobile homes, roofs, and outbuildings.
* Severe thunderstorms will be near...
Spider Lake and Williamsburg around 1050 PM EDT.
Barker Creek around 1055 PM EDT.
Kingsley and Fife Lake around 1100 PM EDT.
Other locations in the path of these severe thunderstorms include
Kalkaska, South Boardman, Sharon, Manton, Sigma, Morey and
Moorestown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4492 8580 4495 8554 4489 8538 4483 8538
4481 8533 4485 8532 4486 8529 4469 8484
4460 8485 4443 8496 4439 8534 4473 8598
TIME...MOT...LOC 0244Z 303DEG 41KT 4479 8548 4468 8556 4466 8574
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Cornish3 follow-up statements
657
WWUS53 KAPX 110256
SVSAPX
Severe Weather Statement
National Weather Service Gaylord MI
1056 PM EDT Tue Aug 10 2021
MIC019-089-110305-
/O.CAN.KAPX.SV.W.0024.000000T0000Z-210811T0330Z/
Leelanau MI-Benzie MI-
1056 PM EDT Tue Aug 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LEELANAU AND
NORTHEASTERN BENZIE COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 300 AM EDT for
northern Michigan.
LAT...LON 4485 8555 4489 8538 4483 8538 4481 8533
4482 8532 4485 8532 4486 8529 4469 8484
4460 8485 4443 8496 4439 8534 4458 8558
4466 8562
TIME...MOT...LOC 0255Z 303DEG 41KT 4473 8536 4462 8544 4460 8562
$$
MIC055-079-113-165-110330-
/O.CON.KAPX.SV.W.0024.000000T0000Z-210811T0330Z/
Wexford MI-Grand Traverse MI-Kalkaska MI-Missaukee MI-
1056 PM EDT Tue Aug 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT
FOR NORTHEASTERN WEXFORD...SOUTHEASTERN GRAND TRAVERSE...KALKASKA AND
NORTHERN MISSAUKEE COUNTIES...
At 1055 PM EDT, severe thunderstorms were located along a line
extending from near Williamsburg to near Spider Lake to Hannah,
moving southeast at 45 mph.
HAZARD...70 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
These severe storms will be near...
Kalkaska, Fife Lake and South Boardman around 1105 PM EDT.
Other locations in the path of these severe thunderstorms include
Sharon, Sigma, Morey and Moorestown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4485 8555 4489 8538 4483 8538 4481 8533
4482 8532 4485 8532 4486 8529 4469 8484
4460 8485 4443 8496 4439 8534 4458 8558
4466 8562
TIME...MOT...LOC 0255Z 303DEG 41KT 4473 8536 4462 8544 4460 8562
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Cornish856
WWUS53 KAPX 110305
SVSAPX
Severe Weather Statement
National Weather Service Gaylord MI
1105 PM EDT Tue Aug 10 2021
MIC055-079-113-165-110330-
/O.CON.KAPX.SV.W.0024.000000T0000Z-210811T0330Z/
Wexford MI-Grand Traverse MI-Kalkaska MI-Missaukee MI-
1105 PM EDT Tue Aug 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT
FOR NORTHEASTERN WEXFORD...SOUTHEASTERN GRAND TRAVERSE...KALKASKA AND
NORTHERN MISSAUKEE COUNTIES...
At 1105 PM EDT, severe thunderstorms were located along a line
extending from Kalkaska to near South Boardman to near Fife Lake,
moving east at 55 mph.
HAZARD...70 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
These severe storms will be near...
Sharon, Darragh and Sigma around 1110 PM EDT.
Other locations in the path of these severe thunderstorms include
Moorestown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4463 8547 4468 8539 4475 8536 4481 8536
4482 8535 4481 8533 4482 8532 4485 8532
4486 8529 4469 8484 4460 8485 4443 8496
4439 8534 4458 8558
TIME...MOT...LOC 0305Z 284DEG 47KT 4475 8518 4464 8519 4454 8529
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Cornish096
WWUS53 KAPX 110318
SVSAPX
Severe Weather Statement
National Weather Service Gaylord MI
1118 PM EDT Tue Aug 10 2021
MIC055-165-110328-
/O.CAN.KAPX.SV.W.0024.000000T0000Z-210811T0330Z/
Wexford MI-Grand Traverse MI-
1118 PM EDT Tue Aug 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WEXFORD AND
SOUTHEASTERN GRAND TRAVERSE COUNTIES 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 300 AM EDT for
northern Michigan.
LAT...LON 4456 8521 4465 8513 4473 8515 4480 8512
4469 8484 4460 8485 4443 8496 4439 8534
4450 8533
TIME...MOT...LOC 0318Z 293DEG 47KT 4470 8496 4460 8497 4451 8507
$$
MIC079-113-110330-
/O.CON.KAPX.SV.W.0024.000000T0000Z-210811T0330Z/
Kalkaska MI-Missaukee MI-
1118 PM EDT Tue Aug 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT
FOR EASTERN KALKASKA AND NORTHERN MISSAUKEE COUNTIES...
At 1118 PM EDT, severe thunderstorms were located along a line
extending from Bear Lake to near Sigma to near Sharon, moving
southeast at 55 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
These severe thunderstorms will remain over mainly rural areas of
eastern Kalkaska and northern Missaukee Counties, including the
following locations... Stittsville and Smithville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4456 8521 4465 8513 4473 8515 4480 8512
4469 8484 4460 8485 4443 8496 4439 8534
4450 8533
TIME...MOT...LOC 0318Z 293DEG 47KT 4470 8496 4460 8497 4451 8507
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
CornishThe office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 9:00 PM EDT | Special Marine Warning | APX | 2 hr | |
| Aug 10, 9:44 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Charlevoix | 46 min |
| Aug 10, 10:04 PM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Leelanau, Manistee, Wexford | 41 min |
| Aug 10, 10:30 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Kalkaska | 30 min |
| Aug 10, 10:52 PM EDT | Flash Flood Warning | APX | Antrim, Grand Traverse | 3 hr |
| Aug 10, 10:58 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Crawford, Kalkaska, Otsego | 32 min |
| Aug 10, 11:24 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Crawford, Kalkaska, Otsego | 51 min |
| Aug 10, 11:28 PM EDT | Severe Thunderstorm Warning | APX | Crawford, Kalkaska, Missaukee, Roscommon | 32 min |
| Aug 11, 12:13 AM EDT | Flash Flood Warning | APX | Leelanau | 3 hr |
| Aug 11, 12:28 AM EDT | Severe Thunderstorm Warning | APX | Alcona, Arenac, Iosco, Ogemaw, Oscoda | 47 min |
| Aug 11, 12:31 AM EDT | Severe Thunderstorm Warning | APX | Alcona, Alpena, Montmorency, Oscoda, Presque Isle | 44 min |
| Aug 11, 12:37 AM EDT | Special Marine Warning | APX | 83 min | |
| Aug 11, 1:46 AM EDT | Areal Flood Warning | APX | Antrim, Grand Traverse | 3 hr |
| Aug 11, 4:12 AM EDT | Small Craft Advisory | APX | 16 hr | |
| Aug 11, 2:52 PM EDT | Special Marine Warning | APX | 53 min | |
| Aug 11, 2:59 PM EDT | Special Weather Statement | APX | Mackinac | 31 min |
| Aug 11, 3:11 PM EDT | Special Marine Warning | APX | 64 min | |
| Aug 11, 3:18 PM EDT | Special Weather Statement | APX | Chippewa | 42 min |
| Aug 11, 3:38 PM EDT | Special Marine Warning | APX | 52 min | |
| Aug 11, 3:47 PM EDT | Severe Thunderstorm Warning | APX | Chippewa, Mackinac | 43 min |
| Aug 11, 3:58 PM EDT | Special Marine Warning | APX | 92 min | |
| Aug 11, 4:11 PM EDT | Severe Thunderstorm Warning | APX | Chippewa, Mackinac | 49 min |
| Aug 11, 4:24 PM EDT | Special Marine Warning | APX | 2 hr | |
| Aug 11, 4:54 PM EDT | Severe Thunderstorm Warning | APX | Cheboygan | 51 min |
| Aug 11, 5:00 PM EDT | Severe Thunderstorm Warning | APX | Emmet | 18 min |
| Aug 11, 5:24 PM EDT | Severe Thunderstorm Warning | APX | Charlevoix, Cheboygan, Emmet | 36 min |
| Aug 11, 5:28 PM EDT | Special Marine Warning | APX | 2 hr | |
| Aug 11, 5:30 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Benzie, Grand Traverse, Kalkaska, Leelanau | 45 min |
| Aug 11, 5:43 PM EDT | Severe Thunderstorm Warning | APX | Cheboygan, Emmet, Presque Isle | 47 min |
| Aug 11, 5:52 PM EDT | Severe Thunderstorm Warning | APX | Cheboygan, Presque Isle | 38 min |
| Aug 11, 6:00 PM EDT | Severe Thunderstorm Warning | APX | Benzie, Leelanau | 30 min |
| Aug 11, 6:09 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Crawford, Kalkaska, Otsego | 35 min |
| Aug 11, 6:24 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Benzie, Grand Traverse, Kalkaska, Leelanau | 51 min |
| Aug 11, 6:26 PM EDT | Special Marine Warning | APX | 34 min | |
| Aug 11, 6:31 PM EDT | Severe Thunderstorm Warning | APX | Crawford, Montmorency, Oscoda, Otsego | 44 min |
| Aug 11, 6:58 PM EDT | Severe Thunderstorm Warning | APX | Alcona, Alpena, Presque Isle | 47 min |
| Aug 11, 7:26 PM EDT | Special Marine Warning | APX | 46 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.