Alert archive / Michigan / Tornado Warnings in 2016
Tornado Warning 2, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this tornado warning at Aug 12, 2016, 2:17 PM EDT for Allegan County, Michigan. It was in force for 28 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 12, 2016, 2:17 PM EDT (18:17 UTC)
- Expired
- Aug 12, 2016, 2:45 PM EDT
- In force
- 28 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
County Allegan County, MI
The radar
The Grand Rapids radar (KGRR), 44 km from the middle of the area, began a volume at 18:20 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
Detroit, MI (KDTX), launched 12:00Z, 6.3 hours before the alert went out and 211 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
- 1934 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 603 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- -1 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
598
WFUS53 KGRR 121817
TORGRR
MIC005-121845-
/O.NEW.KGRR.TO.W.0002.160812T1817Z-160812T1845Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
217 PM EDT FRI AUG 12 2016
THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A
* TORNADO WARNING FOR...
NORTHWESTERN ALLEGAN COUNTY IN SOUTHWESTERN MICHIGAN...
* UNTIL 245 PM EDT
* AT 216 PM EDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED NORTH OF FENNVILLE...MOVING NORTHEAST AT 25
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 TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
NORTHWESTERN ALLEGAN COUNTY...INCLUDING THE FOLLOWING LOCATIONS:
HAMILTON AND OVERISEL.
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.
&&
LAT...LON 4277 8597 4266 8580 4260 8613 4265 8619
TIME...MOT...LOC 1816Z 243DEG 22KT 4264 8613
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$
CAS2 follow-up statements
224
WWUS53 KGRR 121830
SVSGRR
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
230 PM EDT FRI AUG 12 2016
MIC005-121845-
/O.CON.KGRR.TO.W.0002.000000T0000Z-160812T1845Z/
ALLEGAN MI-
230 PM EDT FRI AUG 12 2016
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 245 PM EDT FOR NORTH
CENTRAL ALLEGAN COUNTY...
AT 229 PM EDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR HAMILTON...MOVING NORTHEAST AT 25 MPH.
HAZARD...TORNADO.
SOURCE...RADAR INDICATED ROTATION.
IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE
TO ROOFS...WINDOWS...AND VEHICLES WILL OCCUR. TREE DAMAGE
IS LIKELY.
LOCATIONS IMPACTED INCLUDE...
HAMILTON... OVERISEL...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN
A MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4277 8597 4266 8580 4262 8602 4269 8611
TIME...MOT...LOC 1829Z 243DEG 22KT 4268 8603
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
WEBB550
WWUS53 KGRR 121842
SVSGRR
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
242 PM EDT FRI AUG 12 2016
MIC005-121851-
/O.EXP.KGRR.TO.W.0002.000000T0000Z-160812T1845Z/
ALLEGAN MI-
242 PM EDT FRI AUG 12 2016
...THE TORNADO WARNING FOR NORTH CENTRAL ALLEGAN COUNTY WILL EXPIRE
AT 245 PM EDT...
THE TORNADO THREAT HAS DIMINISHED AND THE TORNADO WARNING HAS BEEN
CANCELLED. HOWEVER... DAMAGING WINDS REMAIN POSSIBLE AND A SEVERE
THUNDERSTORM WARNING REMAINS IN EFFECT FOR THE AREA UNTIL 315 PM
EDT. GUSTY WINDS AND HEAVY RAIN ARE STILL EXPECTED WITH THIS
THUNDERSTORM.
LAT...LON 4277 8597 4266 8580 4262 8602 4269 8611
TIME...MOT...LOC 1839Z 243DEG 22KT 4268 8603
$$
WEBBThe office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 1:24 PM EDT | Special Weather Statement | GRR | Allegan, Van Buren | 51 min |
| Aug 12, 2:12 PM EDT | Severe Thunderstorm Warning | GRR | Allegan | 45 min |
| Aug 12, 3:40 PM EDT | Flood Watch | GRR | Allegan, Barry, Calhoun, Clinton, Eaton, Ingham and 6 more | 16 hr |
Nearby
Tornado Warnings in Michigan, 2016Every tornado warning in 2016Tornadoes in 2016
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.