Alert archive / Michigan / Tornado Warnings in 2012

Tornado Warning 1, NWS Grand Rapids, MI

March 12, 2012Van Buren County, Michigan

NWS Grand Rapids, MI issued this tornado warning at Mar 12, 2012, 5:38 PM EDT for Van Buren County, Michigan. It was in force for 16 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, 5:38 PM EDT (21:38 UTC)
Expired: Mar 12, 2012, 5:54 PM EDT
In force: 16 min
Issued by: NWS Grand Rapids, MI
Area: Storm-based polygon

County Van Buren County, MI

The radar

The Grand Rapids radar (KGRR), 74 km from the middle of the area, began a volume at 21:38 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
Mar 12, 4:22 PM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 9.6 hours before the alert went out and 208 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: 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.

503 
WFUS53 KGRR 122138
TORGRR
MIC159-122215-
/O.NEW.KGRR.TO.W.0001.120312T2138Z-120312T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
538 PM EDT MON MAR 12 2012

THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN VAN BUREN COUNTY IN SOUTHWEST MICHIGAN...

* UNTIL 615 PM EDT

* AT 534 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS
  DANGEROUS STORM WAS LOCATED 5 MILES WEST OF PAW PAW...AND MOVING
  NORTHEAST AT 55 MPH.

THE WARNING INCLUDES AREAS SURROUNDING THESE LOCATIONS...
  PAW PAW...            KENDALL...            LAWTON...
  GOBLES...             BLOOMINGDALE...       GLENDALE...
  MATTAWAN...           MENTHA...             ARMSTRONG CORNERS...
  ALMENA...             TEAPOT DOME...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY TUNED FOR UPDATES ON THIS DANGEROUS WEATHER SITUATION.

&&

LAT...LON 4216 8597 4225 8608 4242 8596 4242 8580
      4242 8577 4216 8577
TIME...MOT...LOC 2138Z 230DEG 46KT 4225 8594

$$

TJT

1 follow-up statement

745 
WWUS53 KGRR 122154
SVSGRR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
554 PM EDT MON MAR 12 2012

MIC159-122204-
/O.CAN.KGRR.TO.W.0001.000000T0000Z-120312T2215Z/
VAN BUREN MI-
554 PM EDT MON MAR 12 2012

...THE TORNADO WARNING FOR EASTERN VAN BUREN COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA. OTHER THUNDERSTORMS WILL CONTINUE TO BE POSSIBLE THIS EVENING.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT MONDAY EVENING
FOR SOUTHWESTERN MICHIGAN.

LAT...LON 4216 8597 4225 8608 4242 8596 4242 8580
      4242 8577 4216 8577
TIME...MOT...LOC 2154Z 230DEG 46KT 4238 8572

$$

TJT

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 12, 3:18 AM EDT	Small Craft Advisory	GRR		17 hr
Mar 12, 11:54 AM EDT	River Flood Advisory	GRR	Ionia	5 days
Mar 12, 11:54 AM EDT	River Flood Advisory	GRR	Ingham	47 hr
Mar 12, 1:32 PM EDT	Special Marine Warning	GRR		100 min
Mar 12, 2:18 PM EDT	Special Weather Statement	GRR	Muskegon, Oceana	57 min
Mar 12, 2:45 PM EDT	Special Weather Statement	GRR	Mason	60 min
Mar 12, 3:01 PM EDT	Special Weather Statement	GRR	Lake, Newaygo	59 min
Mar 12, 3:10 PM EDT	Special Weather Statement	GRR	Muskegon	50 min
Mar 12, 3:15 PM EDT	Special Weather Statement	GRR	Newaygo	60 min
Mar 12, 3:43 PM EDT	Special Weather Statement	GRR	Mecosta	62 min
Mar 12, 4:00 PM EDT	Severe Thunderstorm Warning	GRR	Mecosta, Montcalm, Newaygo	45 min
Mar 12, 4:05 PM EDT	Severe Thunderstorm Warning	GRR	Clare, Osceola	40 min
Mar 12, 4:33 PM EDT	Severe Thunderstorm Warning	GRR	Isabella	21 min
Mar 12, 4:36 PM EDT	Special Marine Warning	GRR		84 min
Mar 12, 5:02 PM EDT	Special Weather Statement	GRR	Van Buren	58 min
Mar 12, 5:24 PM EDT	Special Weather Statement	GRR	Allegan	66 min
Mar 12, 5:32 PM EDT	Severe Thunderstorm Warning	GRR	Van Buren	43 min
Mar 12, 5:44 PM EDT	Special Weather Statement	GRR	Mecosta	61 min
Mar 12, 5:44 PM EDT	Tornado Warning	GRR	Kalamazoo	43 min
Mar 12, 5:59 PM EDT	Tornado Warning	GRR	Allegan, Barry	44 min
Mar 12, 6:08 PM EDT	Tornado Warning	GRR	Isabella, Mecosta	37 min
Mar 12, 6:36 PM EDT	Tornado Warning	GRR	Eaton	24 min

Nearby

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