Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 55, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Aug 29, 2021, 1:37 PM EDT for 5 counties in Michigan. It was in force for 38 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
- Aug 29, 2021, 1:37 PM EDT (17:37 UTC)
- Expired
- Aug 29, 2021, 2:15 PM EDT
- In force
- 38 min
- Issued by
- NWS Gaylord, MI
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Antrim County, MI, Charlevoix County, MI, Emmet County, MI, Grand Traverse County, MI, Leelanau County, MI
The radar
The NCL Michigan radar (KAPX), 56 km from the middle of the area, began a volume at 17:40 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 29, 1:55 PM EDT | TSTM WND GST 39 | 1 Ssw Charlevoix, MI | AWOS STATION KCVX CHARLEVOIX - MUNICIPAL ARPT. |
| Aug 29, 1:55 PM EDT | NON-TSTM WND GST 39 | 1 Ssw Charlevoix, MI | AWOS STATION KCVX CHARLEVOIX - MUNICIPAL ARPT. |
| Aug 29, 2:00 PM EDT | TSTM WND GST 51 | 1 Wsw Ironton, MI | MESONET STATION DW7501 CHARLEVOIX. |
| Aug 29, 2:00 PM EDT | NON-TSTM WND GST 51 | 1 Wsw Ironton, MI | MESONET STATION DW7501 CHARLEVOIX. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Alpena, MI (KAPX), launched 12:00Z, 5.6 hours before the alert went out and 230 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
- 221 J/kg
- Mixed-layer CIN
- -108 J/kg
- Mixed-layer LCL
- 1035 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 113 m²/s²
- 0-3 km storm-relative helicity
- 149 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.6
The text
As transmitted.
149
WUUS53 KAPX 291737
SVRAPX
MIC009-029-047-055-089-291815-
/O.NEW.KAPX.SV.W.0055.210829T1737Z-210829T1815Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Gaylord MI
137 PM EDT Sun Aug 29 2021
The National Weather Service in Gaylord has issued a
* Severe Thunderstorm Warning for...
Southeastern Leelanau County in northern Michigan...
Northeastern Grand Traverse County in northern Michigan...
Western Antrim County in northern Michigan...
Southern Emmet County in northern Michigan...
Southeastern Charlevoix County in northern Michigan...
* Until 215 PM EDT.
* At 136 PM EDT, severe thunderstorms were located along a line
extending from near Fishermans Island State Park to Peshawbestown
to near Lake Ann, moving northeast at 50 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Severe thunderstorms will be near...
Charlevoix and Fishermans Island State Park around 140 PM EDT.
Norwood, Bayshore and Mapleton around 150 PM EDT.
Elk Rapids, Harbor Springs and Ironton around 155 PM EDT.
Other locations in the path of these severe thunderstorms include
Horton Bay, Kewadin, Petoskey, Torch Lake, Central Lake, Clarion,
Walloon Lake, Ellsworth, Bay View, Petoskey State Park, Boyne City,
East Jordan, Conway, Alanson, Oden, Young State Park and Jordan
Township.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4514 8551 4504 8552 4501 8555 4503 8548
4501 8543 4521 8544 4538 8525 4540 8505
4542 8508 4542 8507 4544 8475 4489 8515
4483 8589
TIME...MOT...LOC 1736Z 233DEG 64KT 4527 8536 4504 8561 4478 8589
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$1 follow-up statement
396
WWUS53 KAPX 291800
SVSAPX
Severe Weather Statement
National Weather Service Gaylord MI
200 PM EDT Sun Aug 29 2021
MIC055-089-291809-
/O.CAN.KAPX.SV.W.0055.000000T0000Z-210829T1815Z/
Leelanau MI-Grand Traverse MI-
200 PM EDT Sun Aug 29 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LEELANAU AND
NORTHEASTERN GRAND TRAVERSE COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 700 PM EDT for
northern Michigan.
LAT...LON 4524 8522 4542 8502 4544 8475 4501 8506
4497 8547
TIME...MOT...LOC 1759Z 233DEG 64KT 4551 8490 4528 8515 4503 8543
$$
MIC009-029-047-291815-
/O.CON.KAPX.SV.W.0055.000000T0000Z-210829T1815Z/
Antrim MI-Emmet MI-Charlevoix MI-
200 PM EDT Sun Aug 29 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM EDT
FOR NORTHWESTERN ANTRIM...SOUTHERN EMMET AND SOUTHEASTERN CHARLEVOIX
COUNTIES...
At 159 PM EDT, severe thunderstorms were located along a line
extending from Pleasant View to near Ironton to near Torch Lake,
moving northeast at 50 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Petoskey, Bay View, Petoskey State Park, East Jordan, Conway,
Alanson, Oden, Boyne City, Clarion and Walloon Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4524 8522 4542 8502 4544 8475 4501 8506
4497 8547
TIME...MOT...LOC 1759Z 233DEG 64KT 4551 8490 4528 8515 4503 8543
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$The office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 4:14 AM EDT | Special Weather Statement | APX | Emmet | 46 min |
| Aug 29, 5:53 AM EDT | Special Weather Statement | APX | Ogemaw | 22 min |
| Aug 29, 1:28 PM EDT | Special Marine Warning | APX | 47 min | |
| Aug 29, 1:30 PM EDT | Special Marine Warning | APX | 45 min | |
| Aug 29, 1:39 PM EDT | Severe Thunderstorm Warning | APX | Chippewa, Mackinac | 51 min |
| Aug 29, 1:58 PM EDT | Severe Thunderstorm Warning | APX | Cheboygan, Emmet | 47 min |
| Aug 29, 2:12 PM EDT | Severe Thunderstorm Warning | APX | Kalkaska, Missaukee, Wexford | 48 min |
| Aug 29, 2:17 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Charlevoix, Cheboygan, Emmet, Otsego | 43 min |
| Aug 29, 2:28 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Charlevoix, Kalkaska, Otsego | 32 min |
| Aug 29, 2:29 PM EDT | Special Marine Warning | APX | 91 min | |
| Aug 29, 2:55 PM EDT | Severe Thunderstorm Warning | APX | Cheboygan, Montmorency, Otsego, Presque Isle | 35 min |
| Aug 29, 3:01 PM EDT | Severe Thunderstorm Warning | APX | Crawford, Missaukee, Oscoda, Roscommon | 38 min |
| Aug 29, 3:22 PM EDT | Severe Thunderstorm Warning | APX | Alpena, Montmorency, Presque Isle | 53 min |
| Aug 29, 3:31 PM EDT | Special Marine Warning | APX | 89 min | |
| Aug 29, 3:36 PM EDT | Severe Thunderstorm Warning | APX | Ogemaw, Oscoda, Roscommon | 24 min |
| Aug 29, 5:00 PM EDT | Special Marine Warning | APX | 68 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.