Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 97, NWS Northern Indiana
NWS Northern Indiana issued this severe thunderstorm warning at Aug 12, 2021, 5:52 AM EDT for Branch County, Hillsdale County, Saint Joseph County, Michigan. It was in force for 23 min. 7 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 12, 2021, 5:52 AM EDT (09:52 UTC)
- Expired
- Aug 12, 2021, 6:15 AM EDT
- In force
- 23 min
- Issued by
- NWS Northern Indiana
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Branch County, MI, Hillsdale County, MI, Saint Joseph County, MI
The radar
The Northern Indiana radar (KIWX), 79 km from the middle of the area, began a volume at 09:51 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 12, 5:53 AM EDT | TSTM WND DMG | 2 E Mendon, MI | NUMEROUS TREES DOWN OR DAMAGED ON A DRIVE FROM M60 AT THE ST. JOSEPH CO-BRANCH CO LINE, WEST TO M66, AND THEN SOUTH ON M66 TO STURGIS. LSR IS AT THE INTERSECTION OF M60 AND M66. |
| Aug 12, 5:57 AM EDT | TSTM WND DMG | Colon, MI | DELAYED REPORT. 2 FT DIAMETER HEALTHY TREE SNAPPED IN HALF. TOP HALF WAS THROWN INTO A HOUSE, CAUSING ROOF AND GUTTER DAMAGE. |
| Aug 12, 5:57 AM EDT | TSTM WND DMG | Findley, MI | DELAYED REPORT. HEALTHY 1 TO 3 FT DIAMETER TREE UPROOTED AND DOWNED ON A GARAGE. NEARBY, A TREE WITH PARTIAL ROTTING WAS SNAPPED AT THE BASE AND THE TOP LIMBS DID DAMAGE TO A HOUSE. SEVERAL SMALLER 3-6 INCH LIMBS DOWNED AROUND THE PROPERTY. POWERLINES BENT OR |
| Aug 12, 6:04 AM EDT | TSTM WND DMG | 1 Nnw Coldwater, MI | TREES DOWN ON UNION CITY ROAD AND STATE ROAD. |
| Aug 12, 6:07 AM EDT | TSTM WND DMG | 1 Nne Matteson Lake, MI | REPORT FROM MPING: TREES UPROOTED OR SNAPPED; ROOF BLOWN OFF. |
| Aug 12, 6:08 AM EDT | TSTM WND GST 59 | 2 Wsw Coldwater, MI | |
| Aug 12, 6:10 AM EDT | TSTM WND DMG | Coldwater, MI | DELAYED. 1 TO 2 FT DIAMETER TREE AND SEVERAL LIMBS DOWNED ON A HOUSE, CAUSING GUTTER AND SIDING DAMAGE. |
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 00:00Z, 9.9 hours before the alert went out and 167 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
- 12 J/kg
- Mixed-layer CIN
- -458 J/kg
- Mixed-layer LCL
- 1474 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 243 m²/s²
- 0-3 km storm-relative helicity
- 373 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
698 WUUS53 KIWX 120952 SVRIWX MIC023-059-149-121015- /O.NEW.KIWX.SV.W.0097.210812T0952Z-210812T1015Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Northern Indiana 552 AM EDT Thu Aug 12 2021 The National Weather Service in Northern Indiana has issued a * Severe Thunderstorm Warning for... Northeastern St. Joseph County in southwestern Michigan... Northwestern Branch County in southwestern Michigan... Northwestern Hillsdale County in southeastern Michigan... * Until 615 AM EDT. * At 552 AM EDT, severe thunderstorms were located along a line extending from Centreville to Bronson, moving northeast at 45 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Severe thunderstorms will be near... Bronson around 555 AM EDT. Coldwater around 605 AM EDT. Other locations in the path of these severe thunderstorms include Quincy, Union City and Litchfield. This includes Interstate 69 in Michigan between mile markers 11 and 21. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Continuous 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. Torrential rainfall is occurring with these storms, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4183 8516 4193 8565 4207 8528 4207 8459 TIME...MOT...LOC 0952Z 246DEG 41KT 4193 8550 4188 8519 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ JBALL
The office that day
Everything else NWS Northern Indiana issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 11:04 PM EDT | Special Weather Statement | IWX | Hillsdale | 26 min |
| Aug 12, 3:17 AM EDT | Heat Advisory | IWX | Branch, Cass, Hillsdale, Saint Joseph | 17 hr |
| Aug 12, 3:35 AM EDT | Special Weather Statement | IWX | Branch | 25 min |
| Aug 12, 6:12 AM EDT | Severe Thunderstorm Warning | IWX | Branch, Hillsdale | 33 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.