Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 64, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Aug 29, 2021, 3:36 PM EDT for Ogemaw County, Oscoda County, Roscommon County, Michigan. It was in force for 24 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 29, 2021, 3:36 PM EDT (19:36 UTC)
- Expired
- Aug 29, 2021, 4:00 PM EDT
- In force
- 24 min
- Issued by
- NWS Gaylord, MI
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Ogemaw County, MI, Oscoda County, MI, Roscommon County, MI
The radar
The NCL Michigan radar (KAPX), 65 km from the middle of the area, began a volume at 19:38 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, 3:42 PM EDT | TSTM WND DMG | Fairview, MI | TREES 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 29, 1:46 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Alpena, MI (KAPX), launched 12:00Z, 7.6 hours before the alert went out and 143 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.
807 WUUS53 KAPX 291936 SVRAPX MIC129-135-143-292000- /O.NEW.KAPX.SV.W.0064.210829T1936Z-210829T2000Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Gaylord MI 336 PM EDT Sun Aug 29 2021 The National Weather Service in Gaylord has issued a * Severe Thunderstorm Warning for... Northern Ogemaw County in northern Michigan... East central Roscommon County in northern Michigan... Oscoda County in northern Michigan... * Until 400 PM EDT. * At 336 PM EDT, severe thunderstorms were located along a line extending from near Garland to near Luzerne to St. Helen, moving east at 50 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Severe thunderstorms will be near... Mio, Comins and Mack Lake around 345 PM EDT. Fairview around 350 PM EDT. McKinley and Rose City around 355 PM EDT. Other locations in the path of these severe thunderstorms include Rose Township, Lupton and Rifle River State Park. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4438 8388 4432 8448 4486 8417 4486 8389 TIME...MOT...LOC 1936Z 248DEG 44KT 4481 8420 4458 8423 4438 8445 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, 1:37 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Charlevoix, Emmet, Grand Traverse, Leelanau | 38 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, 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.