Alert archive / Michigan / Severe Thunderstorm Warnings in 2016
Severe Thunderstorm Warning 39, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Aug 20, 2016, 3:04 PM EDT for 4 counties in Michigan. It was in force for 41 min. 2 reports 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
- Aug 20, 2016, 3:04 PM EDT (19:04 UTC)
- Expired
- Aug 20, 2016, 3:45 PM EDT
- In force
- 41 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Barry County, MI, Clinton County, MI, Eaton County, MI, Ionia County, MI
The radar
The Grand Rapids radar (KGRR), 45 km from the middle of the area, began a volume at 19:04 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 |
|---|---|---|---|
| Aug 20, 3:10 PM EDT | TORNADO | E Orleans, MI | NWS DAMAGE SURVEY CONFIRMED AN EF-1 TORNADO IN IONIA AND MONTCALM COUNTIES. TORNADO DAMAGE BEGAN JUST EAST OF THE SMALL TOWN OF ORLEANS AND MOVED NORTHEAST WHERE IT CROSSED M-44... BRINGING DOWN SEVERAL LARGE TREES. ONE OF THE TREES FELL ON A HOUSE. THE TORNAD |
| Aug 20, 3:15 PM EDT | TORNADO | 2 Ne Orleans, MI | RADAR INDICATED TORNADO. NUMEROUS TREES DOWN...WITH ONE ACROSS ROAD. LIMBS ON POWER LINES. SEVERAL PINE TREES SNAPPED OFF 5 TO 6 FEET OFF OF GROUND. POWER OUT. TIME OF REPORT ESTIMATED FROM RADAR DATA. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 7.1 hours before the alert went out and 128 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
- 75 J/kg
- Mixed-layer CIN
- -170 J/kg
- Mixed-layer LCL
- 1500 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
889
WUUS53 KGRR 201904
SVRGRR
MIC015-037-045-067-201945-
/O.NEW.KGRR.SV.W.0039.160820T1904Z-160820T1945Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
304 PM EDT SAT AUG 20 2016
THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
IONIA COUNTY IN SOUTH CENTRAL MICHIGAN...
WESTERN CLINTON COUNTY IN SOUTH CENTRAL MICHIGAN...
NORTHWESTERN EATON COUNTY IN SOUTH CENTRAL MICHIGAN...
NORTHEASTERN BARRY COUNTY IN SOUTHWESTERN MICHIGAN...
* UNTIL 345 PM EDT
* AT 302 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
NASHVILLE... MOVING NORTHEAST AT 40 MPH. OTHER SEVERE STORMS WERE
LOCATED IN A LINE FROM BELDING TO HASTINGS.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES.
* LOCATIONS IMPACTED INCLUDE...
IONIA... ST. JOHNS... HASTINGS...
BELDING... PORTLAND... GRAND LEDGE...
LAKE ODESSA... NASHVILLE... SARANAC...
FREEPORT... ORLEANS... FOWLER...
SEBEWA... WESTPHALIA... LYONS...
VERMONTVILLE... MAPLE RAPIDS... MUIR...
SUNFIELD... MULLIKEN...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
&&
LAT...LON 4254 8495 4261 8534 4277 8531 4312 8531
4312 8461 4307 8451
TIME...MOT...LOC 1902Z 207DEG 35KT 4267 8501
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
MEADEThe office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 10:06 AM EDT | Special Marine Warning | GRR | 114 min | |
| Aug 20, 10:44 AM EDT | Special Weather Statement | GRR | Muskegon, Oceana, Ottawa | 61 min |
| Aug 20, 11:45 AM EDT | Special Weather Statement | GRR | Lake, Mason, Newaygo | 30 min |
| Aug 20, 12:40 PM EDT | Special Weather Statement | GRR | Allegan, Van Buren | 65 min |
| Aug 20, 1:12 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Van Buren | 48 min |
| Aug 20, 1:21 PM EDT | Tornado Warning | GRR | Allegan, Van Buren | 24 min |
| Aug 20, 1:47 PM EDT | Tornado Warning | GRR | Allegan, Ottawa | 28 min |
| Aug 20, 2:05 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Kent, Ottawa | 55 min |
| Aug 20, 2:12 PM EDT | Tornado Warning | GRR | Allegan, Kent, Ottawa | 33 min |
| Aug 20, 2:16 PM EDT | Severe Thunderstorm Warning | GRR | Barry, Calhoun, Eaton, Kalamazoo | 59 min |
| Aug 20, 2:35 PM EDT | Tornado Warning | GRR | Barry, Eaton | 25 min |
| Aug 20, 2:36 PM EDT | Tornado Warning | GRR | Kent | 24 min |
| Aug 20, 2:42 PM EDT | Severe Thunderstorm Warning | GRR | Newaygo | 24 min |
| Aug 20, 2:59 PM EDT | Areal Flood Advisory | GRR | Allegan, Barry, Ionia, Kent, Montcalm | 12 hr |
| Aug 20, 2:59 PM EDT | Tornado Warning | GRR | Kent, Montcalm | 31 min |
| Aug 20, 3:17 PM EDT | Tornado Warning | GRR | Ionia, Montcalm | 28 min |
| Aug 20, 3:33 PM EDT | Severe Thunderstorm Warning | GRR | Clinton, Gratiot, Ionia, Isabella, Montcalm | 42 min |
| Aug 20, 3:44 PM EDT | Severe Thunderstorm Warning | GRR | Lake | 46 min |
| Aug 20, 4:14 PM EDT | Severe Thunderstorm Warning | GRR | Clinton, Gratiot, Isabella | 31 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2016Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.