Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 36, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Jul 24, 2021, 6:58 PM EDT for Clinton County, Eaton County, Ingham County, Michigan. It was in force for 62 min. 3 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
- Jul 24, 2021, 6:58 PM EDT (22:58 UTC)
- Expired
- Jul 24, 2021, 8:00 PM EDT
- In force
- 62 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Clinton County, MI, Eaton County, MI, Ingham County, MI
The radar
The Grand Rapids radar (KGRR), 79 km from the middle of the area, began a volume at 22:58 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 |
|---|---|---|---|
| Jul 24, 7:09 PM EDT | TSTM WND GST 47 | 3 Nne Edgemont Park, MI | ASOS STATION KLAN LANSING. |
| Jul 24, 7:18 PM EDT | TSTM WND DMG | 3 Ene Dimondale, MI | LARGE SECTION OF TREE SNAPPED NEAR I-96 AND MARTIN LUTHER KING BLVD. TIME ESTIMATED FROM RADAR. ADDITIONAL REPORTS AND PHOTOS OF VERY LARGE LIMBS DOWN HAVE BEEN RECEIVED FROM LANSING. |
| Jul 24, 7:20 PM EDT | TSTM WND DMG | 2 Nw Dimondale, MI | TREE LIMBS DOWN. |
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 |
|---|---|---|---|
| Jul 24, 3:16 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 11.0 hours before the alert went out and 95 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
- 588 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 557 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 113 m²/s²
- 0-3 km storm-relative helicity
- 129 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.8
The text
As transmitted.
235
WUUS53 KGRR 242258
SVRGRR
MIC037-045-065-250000-
/O.NEW.KGRR.SV.W.0036.210724T2258Z-210725T0000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Rapids MI
658 PM EDT Sat Jul 24 2021
The National Weather Service in Grand Rapids has issued a
* Severe Thunderstorm Warning for...
Northern Ingham County in south central Michigan...
Southern Clinton County in south central Michigan...
Northeastern Eaton County in south central Michigan...
* Until 800 PM EDT.
* At 658 PM EDT, a severe thunderstorm was located near Grand Ledge,
or 8 miles northwest of Lansing, moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Lansing... East Lansing... Grand Ledge...
Williamston... Edgemont Park... DeWitt...
Webberville... Waverly... Eagle...
Wacousta... Okemos... Bath...
Bell Oak... Haslett... Holt...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Damaging winds and frequent cloud to ground lightning is occurring
with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.
&&
LAT...LON 4269 8489 4277 8488 4277 8484 4291 8484
4292 8437 4278 8436 4278 8416 4261 8414
TIME...MOT...LOC 2258Z 277DEG 39KT 4280 8468
HAIL...<.75IN
WIND...60MPH
$$
DUKE2 follow-up statements
827
WWUS53 KGRR 242313
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
713 PM EDT Sat Jul 24 2021
MIC037-045-065-250000-
/O.CON.KGRR.SV.W.0036.000000T0000Z-210725T0000Z/
Ingham MI-Clinton MI-Eaton MI-
713 PM EDT Sat Jul 24 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR NORTHERN INGHAM...SOUTHEASTERN CLINTON AND NORTHEASTERN EATON
COUNTIES...
At 712 PM EDT, severe thunderstorms were located along a line
extending from 5 miles north of East Lansing to 5 miles west of
Lansing, moving east at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Lansing... East Lansing... Grand Ledge...
Williamston... Edgemont Park... DeWitt...
Webberville... Waverly... Okemos...
Bath... Bell Oak... Haslett...
Holt...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
&&
LAT...LON 4269 8489 4274 8488 4277 8477 4281 8468
4286 8460 4287 8437 4278 8436 4278 8416
4261 8414
TIME...MOT...LOC 2312Z 277DEG 35KT 4281 8444 4268 8465
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
DUKE490
WWUS53 KGRR 242332
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
732 PM EDT Sat Jul 24 2021
MIC037-045-242341-
/O.CAN.KGRR.SV.W.0036.000000T0000Z-210725T0000Z/
Clinton MI-Eaton MI-
732 PM EDT Sat Jul 24 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CLINTON AND
NORTHEASTERN EATON COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
south central Michigan.
LAT...LON 4266 8460 4272 8461 4273 8449 4277 8438
4277 8437 4278 8436 4278 8416 4266 8415
4263 8415 4262 8414 4261 8415
TIME...MOT...LOC 2331Z 277DEG 38KT 4277 8419 4264 8437
$$
MIC065-250000-
/O.CON.KGRR.SV.W.0036.000000T0000Z-210725T0000Z/
Ingham MI-
732 PM EDT Sat Jul 24 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR NORTHERN INGHAM COUNTY...
At 731 PM EDT, severe thunderstorms were located along a line
extending from near Perry to 5 miles northeast of Mason, moving east
at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Lansing... East Lansing... Williamston...
Webberville... Okemos... Bell Oak...
Haslett... Holt...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4266 8460 4272 8461 4273 8449 4277 8438
4277 8437 4278 8436 4278 8416 4266 8415
4263 8415 4262 8414 4261 8415
TIME...MOT...LOC 2331Z 277DEG 38KT 4277 8419 4264 8437
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
DUKEThe office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 12:30 PM EDT | Special Weather Statement | GRR | Clare, Lake, Osceola | 60 min |
| Jul 24, 2:58 PM EDT | Severe Thunderstorm Warning | GRR | Clare | 32 min |
| Jul 24, 4:38 PM EDT | Severe Thunderstorm Warning | GRR | Gratiot | 52 min |
| Jul 24, 5:50 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Barry, Kent, Ottawa | 55 min |
| Jul 24, 7:17 PM EDT | Severe Thunderstorm Warning | GRR | Eaton, Ingham | 43 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2021Every severe thunderstorm warning in 2021
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.