Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 25, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Aug 10, 2021, 10:58 PM EDT for 4 counties in Michigan. It was in force for 32 min. 1 report 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, 10:58 PM EDT (02:58 UTC)
- Expired
- Aug 10, 2021, 11:30 PM EDT
- In force
- 32 min
- Issued by
- NWS Gaylord, MI
- Area
- Storm-based polygon
- Hail
- 1.0 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), 11 km from the middle of the area, began a volume at 03:01 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, 11:30 PM EDT | TSTM WND DMG | Frederic, MI | TREES AND POWERLINES DOWN. |
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, 3.0 hours before the alert went out and 182 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.
659
WUUS53 KAPX 110258
SVRAPX
MIC009-039-079-137-110330-
/O.NEW.KAPX.SV.W.0025.210811T0258Z-210811T0330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Gaylord MI
1058 PM EDT Tue Aug 10 2021
The National Weather Service in Gaylord has issued a
* Severe Thunderstorm Warning for...
Southern Otsego County in northern Michigan...
East central Antrim County in northern Michigan...
Northern Crawford County in northern Michigan...
Northeastern Kalkaska County in northern Michigan...
* Until 1130 PM EDT.
* At 1058 PM EDT, a severe thunderstorm was located near Frederic, or
8 miles northwest of Grayling, moving northeast at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* This severe thunderstorm will be near...
Waters around 1115 PM EDT.
Other locations in the path of this severe thunderstorm include
Otsego Lake State Park, Chester Township and Gaylord.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4467 8470 4472 8485 4480 8493 4509 8484
4488 8437 4486 8437
TIME...MOT...LOC 0258Z 210DEG 31KT 4476 8481
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Cornish1 follow-up statement
681
WWUS53 KAPX 110313
SVSAPX
Severe Weather Statement
National Weather Service Gaylord MI
1113 PM EDT Tue Aug 10 2021
MIC009-079-110323-
/O.CAN.KAPX.SV.W.0025.000000T0000Z-210811T0330Z/
Antrim MI-Kalkaska MI-
1113 PM EDT Tue Aug 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL ANTRIM AND
NORTHEASTERN KALKASKA COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 300 AM EDT for
northern Michigan.
LAT...LON 4474 8458 4490 8485 4502 8485 4503 8486
4509 8484 4488 8437 4486 8437
TIME...MOT...LOC 0313Z 210DEG 34KT 4490 8469
$$
MIC039-137-110330-
/O.CON.KAPX.SV.W.0025.000000T0000Z-210811T0330Z/
Otsego MI-Crawford MI-
1113 PM EDT Tue Aug 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT
FOR SOUTHERN OTSEGO AND NORTHEASTERN CRAWFORD COUNTIES...
At 1113 PM EDT, a severe thunderstorm was located over Waters, or 9
miles south of Gaylord, moving northeast at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Chester Township and Gaylord.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4474 8458 4490 8485 4502 8485 4503 8486
4509 8484 4488 8437 4486 8437
TIME...MOT...LOC 0313Z 210DEG 34KT 4490 8469
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 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, 10:45 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, 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.