Alert archive / Michigan / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 21, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Aug 2, 2018, 5:26 PM EDT for Van Buren County, Michigan. It was in force for 31 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
- Aug 2, 2018, 5:26 PM EDT (21:26 UTC)
- Expired
- Aug 2, 2018, 5:57 PM EDT
- In force
- 31 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Van Buren County, MI
The radar
The Grand Rapids radar (KGRR), 84 km from the middle of the area, began a volume at 21:28 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 2, 5:48 PM EDT | TSTM WND DMG | 3 Se Bangor, MI | TREE DOWN NEAR INTERSECTION OF CR 215 AND 38TH. |
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, 9.4 hours before the alert went out and 218 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
- 123 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 1153 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
769
WUUS53 KGRR 022126
SVRGRR
MIC159-022230-
/O.NEW.KGRR.SV.W.0021.180802T2126Z-180802T2230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Rapids MI
526 PM EDT THU AUG 2 2018
The National Weather Service in Grand Rapids has issued a
* Severe Thunderstorm Warning for...
Van Buren County in southwestern Michigan...
* Until 630 PM EDT.
* At 526 PM EDT, a severe thunderstorm was located 8 miles south of
Watervliet, or 8 miles southeast of Benton Heights, moving
northeast at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Paw Paw... Hartford... Mattawan...
Lawton... Decatur... Pine Grove...
Keeler... Lawrence... Gobles...
Kendall... Glendale... Mentha...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Large hail and damaging winds and continuous 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.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4207 8622 4223 8622 4242 8582 4242 8576
4207 8576
TIME...MOT...LOC 2126Z 242DEG 29KT 4206 8626
HAIL...1.00IN
WIND...60MPH
$$
DUKE1 follow-up statement
825
WWUS53 KGRR 022157
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
557 PM EDT THU AUG 2 2018
MIC159-022206-
/O.CAN.KGRR.SV.W.0021.000000T0000Z-180802T2230Z/
Van Buren MI-
557 PM EDT THU AUG 2 2018
...THE SEVERE THUNDERSTORM WARNING FOR VAN BUREN COUNTY IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.
LAT...LON 4207 8622 4223 8622 4242 8582 4242 8576
4207 8576
TIME...MOT...LOC 2155Z 242DEG 29KT 4217 8596
$$
HOVINGThe office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 8:36 PM EDT | Special Marine Warning | GRR | 40 min | |
| Aug 1, 8:38 PM EDT | Special Weather Statement | GRR | Mason | 67 min |
| Aug 2, 9:21 AM EDT | Special Weather Statement | GRR | Clare | 39 min |
| Aug 2, 10:00 AM EDT | Special Weather Statement | GRR | Clare | 30 min |
| Aug 2, 1:42 PM EDT | Special Weather Statement | GRR | Clare, Isabella, Mecosta | 63 min |
| Aug 2, 1:51 PM EDT | Severe Thunderstorm Warning | GRR | Clare, Isabella | 36 min |
| Aug 2, 4:39 PM EDT | Special Weather Statement | GRR | Barry, Clinton, Eaton, Gratiot, Ionia, Kalamazoo and 2 more | 3 hr |
| Aug 2, 5:39 PM EDT | Severe Thunderstorm Warning | GRR | Clinton, Gratiot, Ionia | 37 min |
| Aug 2, 6:02 PM EDT | Severe Thunderstorm Warning | GRR | Allegan | 20 min |
| Aug 2, 7:30 PM EDT | Special Weather Statement | GRR | Barry, Ionia | 60 min |
| Aug 2, 7:59 PM EDT | Special Weather Statement | GRR | Clinton, Gratiot, Ionia | 61 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2018Every severe thunderstorm warning in 2018
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.