Alert archive / Michigan / Tornado Warnings in 2012
Tornado Warning 4, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this tornado warning at Mar 12, 2012, 6:08 PM EDT for Isabella County, Mecosta County, Michigan. It was in force for 37 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
- Mar 12, 2012, 6:08 PM EDT (22:08 UTC)
- Expired
- Mar 12, 2012, 6:45 PM EDT
- In force
- 37 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
Counties Isabella County, MI, Mecosta County, MI
The radar
The Grand Rapids radar (KGRR), 99 km from the middle of the area, began a volume at 22:08 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 |
|---|---|---|---|
| Mar 12, 6:30 PM EDT | HAIL 0.75 | 5 Ne Mount Pleasant, MI |
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 |
|---|---|---|---|
| Mar 12, 4:22 PM EDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 10.1 hours before the alert went out and 151 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
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
258
WFUS53 KGRR 122208
TORGRR
MIC073-107-122245-
/O.NEW.KGRR.TO.W.0004.120312T2208Z-120312T2245Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
608 PM EDT MON MAR 12 2012
THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A
* TORNADO WARNING FOR...
ISABELLA COUNTY IN CENTRAL MICHIGAN...
SOUTHEASTERN MECOSTA COUNTY IN CENTRAL MICHIGAN...
* UNTIL 645 PM EDT
* AT 604 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS
DANGEROUS STORM WAS LOCATED 7 MILES NORTH OF EDMORE...AND MOVING
NORTHEAST AT 55 MPH.
THE WARNING INCLUDES AREAS SURROUNDING THESE LOCATIONS...
MOUNT PLEASANT... ROSEBUSH... DELWIN...
LEATON... LOOMIS... WINN...
BEAL CITY... BLANCHARD... MILLBROOK...
HERRICK... DEERFIELD CENTER... BROOMFIELD CENTER...
ROLLAND CENTER... VERNON CENTER... WISE...
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 OBJECTS.
&&
LAT...LON 4361 8460 4346 8498 4347 8510 4353 8519
4382 8476 4381 8460
TIME...MOT...LOC 2208Z 234DEG 46KT 4353 8503
$$
HOVING3 follow-up statements
111
WWUS53 KGRR 122219
SVSGRR
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
619 PM EDT MON MAR 12 2012
MIC107-122228-
/O.CAN.KGRR.TO.W.0004.000000T0000Z-120312T2245Z/
MECOSTA MI-
619 PM EDT MON MAR 12 2012
...THE TORNADO WARNING FOR SOUTHEASTERN MECOSTA COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS EITHER WEAKENED OR MOVED OUT
OF THE WARNED AREA.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT MONDAY EVENING
FOR SOUTHWESTERN MICHIGAN.
LAT...LON 4349 8494 4355 8500 4359 8504 4381 8476
4381 8460 4361 8460
TIME...MOT...LOC 2218Z 234DEG 46KT 4360 8489
$$
MIC073-122245-
/O.CON.KGRR.TO.W.0004.000000T0000Z-120312T2245Z/
ISABELLA MI-
619 PM EDT MON MAR 12 2012
...A TORNADO WARNING REMAINS IN EFFECT FOR ISABELLA COUNTY UNTIL 645
PM EDT...
AT 617 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED 6 MILES WEST OF MOUNT PLEASANT...MOVING NORTHEAST
AT 55 MPH. TRAINED SPOTTERS REPORTED ROTATION IN THIS STORM NEAR
BLANCHARD AROUND 605 PM. SEEK SHELTER IMMEDIATELY!
LOCATIONS IMPACTED INCLUDE...
MOUNT PLEASANT... ROSEBUSH... DELWIN...
LEATON... LOOMIS... WINN...
BEAL CITY... HERRICK... DEERFIELD CENTER...
BROOMFIELD CENTER... VERNON CENTER... WISE...
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 OBJECTS.
&&
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT MONDAY EVENING
FOR SOUTHWESTERN MICHIGAN.
LAT...LON 4349 8494 4355 8500 4359 8504 4381 8476
4381 8460 4361 8460
TIME...MOT...LOC 2218Z 234DEG 46KT 4360 8489
$$
HOVING048
WWUS53 KGRR 122229
SVSGRR
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
629 PM EDT MON MAR 12 2012
MIC073-122245-
/O.CON.KGRR.TO.W.0004.000000T0000Z-120312T2245Z/
ISABELLA MI-
629 PM EDT MON MAR 12 2012
...A TORNADO WARNING REMAINS IN EFFECT FOR EASTERN ISABELLA COUNTY
UNTIL 645 PM EDT...
AT 625 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR ROSEBUSH...MOVING NORTHEAST AT 55 MPH.
TRAINED SPOTTERS HAVE REPORTED A WALL CLOUD IN THE MOUNT PLEASANT
AREA. THIS STORM HAS STRONG ROTATION ON RADAR AND COULD PRODUCE A
TORNADO AT ANY MOMENT. SEEK SHELTER IMMEDIATELY!
LOCATIONS IMPACTED INCLUDE...
MOUNT PLEASANT... ROSEBUSH... DELWIN...
LEATON... LOOMIS... HERRICK...
VERNON CENTER... WISE...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING OBJECTS.
&&
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT MONDAY EVENING
FOR SOUTHWESTERN MICHIGAN.
LAT...LON 4354 8480 4360 8487 4368 8491 4381 8476
4381 8460 4361 8460
TIME...MOT...LOC 2229Z 234DEG 46KT 4368 8473
$$
HOVING349
WWUS53 KGRR 122244
SVSGRR
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
644 PM EDT MON MAR 12 2012
MIC073-122254-
/O.EXP.KGRR.TO.W.0004.000000T0000Z-120312T2245Z/
ISABELLA MI-
644 PM EDT MON MAR 12 2012
...THE TORNADO WARNING FOR EASTERN ISABELLA COUNTY WILL EXPIRE AT 645
PM EDT...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT MONDAY EVENING
FOR SOUTHWESTERN MICHIGAN.
LAT...LON 4354 8480 4360 8487 4368 8491 4381 8476
4381 8460 4361 8460
TIME...MOT...LOC 2244Z 234DEG 46KT 4379 8451
$$
HOVINGThe 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, 5:38 PM EDT | Tornado Warning | GRR | Van Buren | 16 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, 6:36 PM EDT | Tornado Warning | GRR | Eaton | 24 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.