Alert archive / Michigan / Tornado Warnings in 2012

Tornado Warning 2, NWS Gaylord, MI

March 12, 2012Gladwin County, Michigan

NWS Gaylord, MI issued this tornado warning at Mar 12, 2012, 6:46 PM EDT for Gladwin County, Michigan. It was in force for 26 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
Mar 12, 2012, 6:46 PM EDT (22:46 UTC)
Expired
Mar 12, 2012, 7:12 PM EDT
In force
26 min
Issued by
NWS Gaylord, MI
Area
Storm-based polygon

County Gladwin County, MI

The radar

The NCL Michigan radar (KAPX), 121 km from the middle of the area, began a volume at 22:46 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.

IssuedProductOfficeLasted
Mar 12, 4:22 PM EDTTornado WatchSPC7 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 10.8 hours before the alert went out and 146 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-pSkew-T log-p diagram, Detroit, MI at 12:00Z on 2012-03-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Detroit, MI at 12:00Z on 2012-03-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 124 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1981 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
124 m²/s²
0-3 km storm-relative helicity
86 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

984 
WFUS53 KAPX 122246
TORAPX
MIC051-122330-
/O.NEW.KAPX.TO.W.0002.120312T2246Z-120312T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
646 PM EDT MON MAR 12 2012

THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN GLADWIN COUNTY IN NORTHERN LOWER MICHIGAN...

* UNTIL 730 PM EDT

* AT 642 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR COLEMAN...OR 11 MILES SOUTHEAST OF CLARE...
  AND MOVING NORTHEAST AT 40 MPH.

* THIS TORNADIC STORM WILL BE NEAR...
  RHODES AROUND 720 PM EDT.

LARGE HAIL UP TO THE SIZE OF QUARTERS IS ALSO POSSIBLE WITH THIS 
STORM AS IT CROSSES THE FAR SOUTHEAST CORNER OF GLADWIN COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4381 8454 4382 8454 4383 8451 4394 8421
      4395 8416 4394 8415 4383 8416 4382 8417
      4382 8436 4381 8437
TIME...MOT...LOC 2245Z 241DEG 33KT 4375 8455

$$

LAWRENCE
2 follow-up statements
686 
WWUS34 KAPX 122255
SVSAPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
655 PM EDT MON MAR 12 2012

MIC051-122330-
/O.CON.KAPX.TO.W.0002.000000T0000Z-120312T2330Z/
GLADWIN MI-
655 PM EDT MON MAR 12 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN GLADWIN
COUNTY UNTIL 730 PM EDT...

AT 650 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS 
DANGEROUS STORM WAS LOCATED 5 MILES EAST OF COLEMAN...OR 14 MILES 
EAST OF CLARE...MOVING NORTHEAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  RHODES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4381 8454 4383 8451 4394 8421 4395 8416
      4394 8415 4383 8416 4382 8417 4382 8436
      4381 8437
TIME...MOT...LOC 2255Z 240DEG 35KT 4380 8443
WIND...HAIL <50MPH <.50IN

$$

LAWRENCE
543 
WWUS34 KAPX 122312
SVSAPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
712 PM EDT MON MAR 12 2012

MIC051-122322-
/O.CAN.KAPX.TO.W.0002.000000T0000Z-120312T2330Z/
GLADWIN MI-
712 PM EDT MON MAR 12 2012

...THE TORNADO WARNING FOR SOUTHEASTERN GLADWIN COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

WHILE STORM HAS WEAKENED...IT REMAINS CAPABLE OF PRODUCING BRIEF 
WIND GUSTS TO 50 MPH AND HAIL UP TO THE SIZE OF PENNIES.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 11 PM THIS EVENING. 

LAT...LON 4381 8454 4383 8451 4394 8421 4395 8416
      4394 8415 4383 8416 4382 8417 4382 8436
      4381 8437
TIME...MOT...LOC 2312Z 240DEG 35KT 4388 8423
WIND...HAIL <50MPH <.50IN

$$

LAWRENCE

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 12, 10:55 AM EDTRiver Flood WarningAPXArenac4 days
Mar 12, 5:29 PM EDTTornado WarningAPXArenac, Gladwin, Ogemaw, Roscommon19 min
Mar 12, 5:59 PM EDTSevere Thunderstorm WarningAPXAlcona, Iosco, Ogemaw36 min

Nearby

Tornado Warnings in Michigan, 2012Every tornado warning in 2012Tornadoes in 2012

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.