Alert archive / Michigan / Tornado Warnings in 2018

Tornado Warning 3, NWS Gaylord, MI

August 28, 2018Alpena County, Montmorency County, Michigan

NWS Gaylord, MI issued this tornado warning at Aug 28, 2018, 9:02 PM EDT for Alpena County, Montmorency County, Michigan. It was in force for 8 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: Aug 28, 2018, 9:02 PM EDT (01:02 UTC)
Expired: Aug 28, 2018, 9:10 PM EDT
In force: 8 min
Issued by: NWS Gaylord, MI
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Alpena County, MI, Montmorency County, MI

The radar

The NCL Michigan radar (KAPX), 80 km from the middle of the area, began a volume at 01:05 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 28, 6:23 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Alpena, MI (KAPX), launched 00:00Z, 1.0 hours before the alert went out and 103 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1666 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 766 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 196 m²/s²
0-3 km storm-relative helicity: 165 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 7.5

Open this sounding in Storm Lab

The text

As transmitted.

421 
WFUS53 KAPX 290102
TORAPX
MIC007-119-290130-
/O.NEW.KAPX.TO.W.0003.180829T0102Z-180829T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Gaylord MI
902 PM EDT TUE AUG 28 2018

The National Weather Service in Gaylord has issued a

* Tornado Warning for...
  Southwestern Alpena County in northern Michigan...
  East central Montmorency County in northern Michigan...

* Until 930 PM EDT.
    
* At 902 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Fletcher Pond, or 11 miles southwest of Lachine,
  moving east at 40 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Spratt and Ossineke Township around 915 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 4505 8355 4488 8350 4492 8397 4501 8398
TIME...MOT...LOC 0102Z 268DEG 34KT 4496 8391 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

MEK

2 follow-up statements

736 
WWUS53 KAPX 290107
SVSAPX

Severe Weather Statement
National Weather Service Gaylord MI
907 PM EDT TUE AUG 28 2018

MIC119-290117-
/O.CAN.KAPX.TO.W.0003.000000T0000Z-180829T0130Z/
Montmorency MI-
907 PM EDT TUE AUG 28 2018

...THE TORNADO WARNING FOR EAST CENTRAL MONTMORENCY COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has 
weakened and moved out of the warned area. Therefore, the warning
has been cancelled.

A Severe Thunderstorm Watch remains in effect until 100 AM EDT for
northern Michigan.

LAT...LON 4505 8355 4488 8350 4493 8389 4500 8389
TIME...MOT...LOC 0107Z 268DEG 34KT 4496 8384 

$$

MIC007-290130-
/O.CON.KAPX.TO.W.0003.000000T0000Z-180829T0130Z/
Alpena MI-
907 PM EDT TUE AUG 28 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM EDT FOR
SOUTHWESTERN ALPENA COUNTY...
    
At 907 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Fletcher Pond, or 9 miles southwest of Lachine,
moving east at 40 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Spratt and Ossineke Township around 915 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4505 8355 4488 8350 4493 8389 4500 8389
TIME...MOT...LOC 0107Z 268DEG 34KT 4496 8384 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

MEK

801 
WWUS53 KAPX 290110
SVSAPX

Severe Weather Statement
National Weather Service Gaylord MI
910 PM EDT TUE AUG 28 2018

MIC007-290119-
/O.CAN.KAPX.TO.W.0003.000000T0000Z-180829T0130Z/
Alpena MI-
910 PM EDT TUE AUG 28 2018

...THE TORNADO WARNING FOR SOUTHWESTERN ALPENA COUNTY IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.  However gusty winds are
still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 100 AM EDT for
northern Michigan.

LAT...LON 4505 8355 4488 8350 4493 8389 4500 8389
TIME...MOT...LOC 0109Z 268DEG 34KT 4496 8381 

$$

MEK

The office that day

Everything else NWS Gaylord, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 28, 8:22 PM EDT	Severe Thunderstorm Warning	APX	Charlevoix, Cheboygan, Montmorency, Otsego	36 min
Aug 28, 8:29 PM EDT	Severe Thunderstorm Warning	APX	Alcona, Arenac, Crawford, Gladwin, Iosco, Ogemaw and 2 more	46 min
Aug 28, 8:54 PM EDT	Special Marine Warning	APX		96 min
Aug 28, 8:57 PM EDT	Special Weather Statement	APX	Alcona, Alpena, Montmorency, Oscoda	33 min
Aug 29, 4:07 AM EDT	Beach Hazards Statement	APX	Benzie, Cheboygan, Leelanau, Manistee, Presque Isle	20 hr

Nearby

Tornado Warnings in Michigan, 2018 Every tornado warning in 2018 Tornadoes in 2018

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.