Alert archive / Michigan / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 21, NWS Grand Rapids, MI

May 15, 2025Osceola County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at May 15, 2025, 10:54 PM EDT for Osceola County, Michigan. It was in force for 38 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: May 15, 2025, 10:54 PM EDT (02:54 UTC)
Expired: May 15, 2025, 11:32 PM EDT
In force: 38 min
Issued by: NWS Grand Rapids, MI
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

County Osceola County, MI

The radar

The NCL Michigan radar (KAPX), 112 km from the middle of the area, began a volume at 02:55 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
May 15, 11:13 PM EDT	TSTM WND DMG	2 Sse Gibos Corners, MI	Wires down. Time estimated.

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
May 15, 8:22 PM EDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 00:00Z, 2.9 hours before the alert went out and 198 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: 1413 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 1102 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 116 m²/s²
0-3 km storm-relative helicity: 216 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 5.8

Open this sounding in Storm Lab

The text

As transmitted.

613 
WUUS53 KGRR 160254
SVRGRR
MIC133-160400-
/O.NEW.KGRR.SV.W.0021.250516T0254Z-250516T0400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Rapids MI
1054 PM EDT Thu May 15 2025

The National Weather Service in Grand Rapids has issued a

* Severe Thunderstorm Warning for...
  Eastern Osceola County in central Michigan...

* Until midnight EDT.

* At 1054 PM EDT, a severe thunderstorm was located 8 miles south of
  Evart, moving northeast at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Evart...               Marion...              Hersey...
  Sears...               Avondale...            Lake Miramichi...
  Big Lake...            

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 300 AM EDT for central
Michigan.

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4381 8509 4382 8546 4417 8523 4416 8509
TIME...MOT...LOC 0254Z 216DEG 39KT 4378 8533 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

THOMAS

1 follow-up statement

645 
WWUS53 KGRR 160332
SVSGRR

Severe Weather Statement
National Weather Service Grand Rapids MI
1132 PM EDT Thu May 15 2025

MIC133-160342-
/O.CAN.KGRR.SV.W.0021.000000T0000Z-250516T0400Z/
Osceola MI-
1132 PM EDT Thu May 15 2025

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN OSCEOLA COUNTY IS
CANCELLED...

The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 300 AM EDT for central
Michigan.

LAT...LON 4381 8509 4382 8546 4417 8523 4416 8509
TIME...MOT...LOC 0329Z 216DEG 39KT 4412 8499 

$$

TJT

The office that day

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

Issued	Product	Office	Counties	Lasted
May 15, 8:21 PM EDT	Special Marine Warning	GRR		2 hr
May 15, 9:16 PM EDT	Severe Thunderstorm Warning Considerable damage threat	GRR	Mason, Muskegon, Oceana, Ottawa	89 min
May 15, 9:33 PM EDT	Severe Thunderstorm Warning Considerable damage threat	GRR	Allegan, Van Buren	87 min
May 15, 9:33 PM EDT	Tornado Warning	GRR	Muskegon, Newaygo, Ottawa	42 min
May 15, 9:52 PM EDT	Severe Thunderstorm Warning Destructive damage threat	GRR	Kent, Newaygo	83 min
May 15, 10:02 PM EDT	Tornado Warning	GRR	Allegan, Ottawa	43 min
May 15, 10:04 PM EDT	Severe Thunderstorm Warning Considerable damage threat	GRR	Lake	46 min
May 15, 10:12 PM EDT	Tornado Warning	GRR	Kent, Montcalm, Newaygo	33 min
May 15, 10:20 PM EDT	Severe Thunderstorm Warning Considerable damage threat	GRR	Mecosta	61 min
May 15, 10:24 PM EDT	Severe Thunderstorm Warning Considerable damage threat	GRR	Montcalm	81 min
May 15, 10:33 PM EDT	Severe Thunderstorm Warning	GRR	Barry, Ionia, Kalamazoo	71 min
May 15, 10:33 PM EDT	Tornado Warning	GRR	Allegan, Barry, Kent	42 min
May 15, 10:43 PM EDT	Tornado Warning	GRR	Allegan, Barry	47 min
May 15, 10:58 PM EDT	Tornado Warning	GRR	Barry, Eaton, Ionia	47 min
May 15, 11:01 PM EDT	Severe Thunderstorm Warning	GRR	Calhoun	59 min
May 15, 11:02 PM EDT	Tornado Warning	GRR	Calhoun, Kalamazoo	43 min
May 15, 11:07 PM EDT	Severe Thunderstorm Warning	GRR	Eaton	53 min
May 15, 11:18 PM EDT	Tornado Warning	GRR	Eaton	27 min
May 15, 11:22 PM EDT	Severe Thunderstorm Warning	GRR	Clare, Isabella	38 min
May 15, 11:24 PM EDT	Severe Thunderstorm Warning Considerable damage threat	GRR	Clinton	42 min
May 15, 11:26 PM EDT	Severe Thunderstorm Warning	GRR	Gratiot	42 min
May 15, 11:32 PM EDT	Tornado Warning	GRR	Clinton, Gratiot	32 min
May 15, 11:33 PM EDT	Severe Thunderstorm Warning	GRR	Jackson	67 min
May 15, 11:34 PM EDT	Tornado Warning	GRR	Ingham	41 min
May 16, 7:33 PM EDT	Special Weather Statement	GRR	Lake, Mason, Newaygo, Osceola	42 min
May 16, 7:35 PM EDT	Special Marine Warning	GRR		40 min
May 16, 7:42 PM EDT	Special Marine Warning	GRR		2 hr
May 16, 7:44 PM EDT	Severe Thunderstorm Warning	GRR	Lake, Mecosta, Newaygo, Osceola	91 min
May 16, 7:53 PM EDT	Severe Thunderstorm Warning	GRR	Lake, Mason	37 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2025 Every severe thunderstorm warning in 2025

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.