Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 39, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Aug 11, 2021, 6:09 PM EDT for 4 counties in Michigan. It was in force for 35 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 11, 2021, 6:09 PM EDT (22:09 UTC)
- Expired
- Aug 11, 2021, 6:44 PM EDT
- In force
- 35 min
- Issued by
- NWS Gaylord, MI
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Antrim County, MI, Crawford County, MI, Kalkaska County, MI, Otsego County, MI
The radar
The NCL Michigan radar (KAPX), 14 km from the middle of the area, began a volume at 22:09 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 11, 6:18 PM EDT | TSTM WND DMG | 4 Sse Elmira, MI | TREES DOWN NEAR ESTELLE RD AND VAN TYLE RD. |
| Aug 11, 6:23 PM EDT | TSTM WND DMG | 3 Nnw Gaylord, MI | CORRECTS TIME ON PREVIOUS TSTM WND DMG REPORT FROM 3 NNW GAYLORD. TREES DOWN NEAR PARMATER RD AND PYKE SCHOOL RD. |
| Aug 11, 6:25 PM EDT | TSTM WND DMG | 1 S Waters, MI | TREE DOWNED ON TOP OF VEHICLE. |
| Aug 11, 6:28 PM EDT | TSTM WND GST 52 | 1 Ssw Gaylord, MI | ASOS STATION KGLR GAYLORD - OTSEGO COUNTY AIRPORT. |
| Aug 11, 6:30 PM EDT | TSTM WND DMG | 3 W Johannesburg, MI | TREES DOWN NEAR M-32 AND ROCK 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 |
|---|---|---|---|
| Aug 11, 4:48 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
The nearest sounding before it
Alpena, MI (KAPX), launched 12:00Z, 10.2 hours before the alert went out and 190 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
- 2 J/kg
- Mixed-layer CIN
- -340 J/kg
- Mixed-layer LCL
- 1366 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 158 m²/s²
- 0-3 km storm-relative helicity
- 172 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
179
WUUS53 KAPX 112209
SVRAPX
MIC009-039-079-137-112300-
/O.NEW.KAPX.SV.W.0039.210811T2209Z-210811T2300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Gaylord MI
609 PM EDT Wed Aug 11 2021
The National Weather Service in Gaylord has issued a
* Severe Thunderstorm Warning for...
Otsego County in northern Michigan...
Southeastern Antrim County in northern Michigan...
Northwestern Crawford County in northern Michigan...
Northeastern Kalkaska County in northern Michigan...
* Until 700 PM EDT.
* At 608 PM EDT, a severe thunderstorm was located over Mancelona,
moving east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* This severe thunderstorm will be near...
Alba around 620 PM EDT.
Other locations in the path of this severe thunderstorm include
Gaylord, Otsego Lake State Park, Waters, Sparr, Chester Township and
Johannesburg.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4480 8504 4498 8500 4509 8514 4512 8494
4512 8474 4515 8474 4520 8437 4486 8438
TIME...MOT...LOC 2208Z 263DEG 47KT 4492 8507
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MG3 follow-up statements
350
WWUS53 KAPX 112222
SVSAPX
Severe Weather Statement
National Weather Service Gaylord MI
622 PM EDT Wed Aug 11 2021
MIC009-079-112232-
/O.CAN.KAPX.SV.W.0039.000000T0000Z-210811T2300Z/
Antrim MI-Kalkaska MI-
622 PM EDT Wed Aug 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ANTRIM AND
NORTHEASTERN KALKASKA COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
northern Michigan.
LAT...LON 4486 8438 4482 8484 4484 8485 4512 8476
4512 8474 4515 8474 4520 8437
TIME...MOT...LOC 2222Z 263DEG 47KT 4494 8480
$$
MIC039-137-112300-
/O.CON.KAPX.SV.W.0039.000000T0000Z-210811T2300Z/
Otsego MI-Crawford MI-
622 PM EDT Wed Aug 11 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR OTSEGO AND NORTHWESTERN CRAWFORD COUNTIES...
At 622 PM EDT, a severe thunderstorm was located near Otsego Lake
State Park, or 8 miles southwest of Gaylord, moving east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Gaylord, Sparr, Johannesburg and Chester Township.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4486 8438 4482 8484 4484 8485 4512 8476
4512 8474 4515 8474 4520 8437
TIME...MOT...LOC 2222Z 263DEG 47KT 4494 8480
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MG766
WWUS53 KAPX 112233
SVSAPX
Severe Weather Statement
National Weather Service Gaylord MI
633 PM EDT Wed Aug 11 2021
MIC039-112242-
/O.CAN.KAPX.SV.W.0039.000000T0000Z-210811T2300Z/
Crawford MI-
633 PM EDT Wed Aug 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CRAWFORD COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
northern Michigan.
LAT...LON 4486 8455 4500 8438 4486 8438
TIME...MOT...LOC 2232Z 270DEG 47KT 4495 8460
$$
MIC137-112300-
/O.CON.KAPX.SV.W.0039.000000T0000Z-210811T2300Z/
Otsego MI-
633 PM EDT Wed Aug 11 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR SOUTHEASTERN OTSEGO COUNTY...
At 632 PM EDT, a severe thunderstorm was located near Chester
Township, or near Gaylord, moving east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
This severe thunderstorm will remain over mainly rural areas of
southeastern Otsego County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4486 8455 4500 8438 4486 8438
TIME...MOT...LOC 2232Z 270DEG 47KT 4495 8460
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MG223
WWUS53 KAPX 112244
SVSAPX
Severe Weather Statement
National Weather Service Gaylord MI
644 PM EDT Wed Aug 11 2021
MIC137-112254-
/O.CAN.KAPX.SV.W.0039.000000T0000Z-210811T2300Z/
Otsego MI-
644 PM EDT Wed Aug 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN OTSEGO COUNTY IS
CANCELLED...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
northern Michigan.
LAT...LON 4486 8455 4500 8438 4486 8438
TIME...MOT...LOC 2242Z 263DEG 47KT 4497 8437
$$
MGThe 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, 10:45 PM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Kalkaska, Leelanau, Missaukee, Wexford | 45 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, 6:24 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.