Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 7, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Jun 12, 2021, 6:55 PM EDT for Ogemaw County, Roscommon County, Michigan. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 12, 2021, 6:55 PM EDT (22:55 UTC)
- Expired
- Jun 12, 2021, 7:26 PM EDT
- In force
- 31 min
- Issued by
- NWS Gaylord, MI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Ogemaw County, MI, Roscommon County, MI
The radar
The NCL Michigan radar (KAPX), 56 km from the middle of the area, began a volume at 22:58 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.
The nearest sounding before it
Alpena, MI (KAPX), launched 12:00Z, 10.9 hours before the alert went out and 185 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 725 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- -48 m²/s²
- 0-3 km storm-relative helicity
- -21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
955
WUUS53 KAPX 122255
SVRAPX
MIC129-143-122345-
/O.NEW.KAPX.SV.W.0007.210612T2255Z-210612T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Gaylord MI
655 PM EDT Sat Jun 12 2021
The National Weather Service in Gaylord has issued a
* Severe Thunderstorm Warning for...
Northwestern Ogemaw County in northern Michigan...
Northeastern Roscommon County in northern Michigan...
* Until 745 PM EDT.
* At 655 PM EDT, a severe thunderstorm was located near South Higgins
Lake, or near Roscommon, moving southeast at 15 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...
Lake St. Helen, St. Helen and Clear Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4442 8469 4447 8466 4450 8455 4443 8420
4424 8450
TIME...MOT...LOC 2255Z 302DEG 14KT 4444 8459
HAIL...1.00IN
WIND...60MPH
$$
Cornish2 follow-up statements
711
WWUS53 KAPX 122311
SVSAPX
Severe Weather Statement
National Weather Service Gaylord MI
711 PM EDT Sat Jun 12 2021
MIC129-143-122345-
/O.CON.KAPX.SV.W.0007.000000T0000Z-210612T2345Z/
Ogemaw MI-Roscommon MI-
711 PM EDT Sat Jun 12 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR NORTHWESTERN OGEMAW AND NORTHEASTERN ROSCOMMON COUNTIES...
At 711 PM EDT, a severe thunderstorm was located over Lake St. Helen,
or near St. Helen, moving southeast at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
St. Helen, Clear Lake and Lake St. Helen.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4439 8461 4446 8455 4448 8447 4443 8420
4426 8447
TIME...MOT...LOC 2311Z 304DEG 18KT 4439 8448
HAIL...1.00IN
WIND...60MPH
$$
Cornish141
WWUS53 KAPX 122326
SVSAPX
Severe Weather Statement
National Weather Service Gaylord MI
726 PM EDT Sat Jun 12 2021
MIC129-143-122336-
/O.CAN.KAPX.SV.W.0007.000000T0000Z-210612T2345Z/
Ogemaw MI-Roscommon MI-
726 PM EDT Sat Jun 12 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN OGEMAW AND
NORTHEASTERN ROSCOMMON COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.
LAT...LON 4439 8461 4446 8455 4448 8447 4443 8420
4426 8447
TIME...MOT...LOC 2323Z 302DEG 14KT 4436 8441
$$
CornishThe office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 4:30 PM EDT | Special Weather Statement | APX | Ogemaw, Roscommon | 45 min |
| Jun 12, 6:18 PM EDT | Special Weather Statement | APX | Emmet | 42 min |
| Jun 12, 6:21 PM EDT | Severe Thunderstorm Warning | APX | Montmorency, Oscoda | 40 min |
| Jun 12, 6:29 PM EDT | Severe Thunderstorm Warning | APX | Gladwin, Roscommon | 48 min |
| Jun 12, 6:44 PM EDT | Severe Thunderstorm Warning | APX | Gladwin, Roscommon | 46 min |
| Jun 12, 7:22 PM EDT | Severe Thunderstorm Warning | APX | Gladwin | 38 min |
| Jun 12, 7:24 PM EDT | Severe Thunderstorm Warning | APX | Alcona | 51 min |
| Jun 12, 7:55 PM EDT | Severe Thunderstorm Warning | APX | Gladwin | 24 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.