Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 71, NWS Northern Indiana
NWS Northern Indiana issued this severe thunderstorm warning at Aug 6, 2021, 8:33 PM EDT for Branch County, Hillsdale County, Michigan. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 6, 2021, 8:33 PM EDT (00:33 UTC)
- Expired
- Aug 6, 2021, 9:12 PM EDT
- In force
- 39 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
The radar
The Northern Indiana radar (KIWX), 93 km from the middle of the area, began a volume at 00:33 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.
The nearest sounding before it
Detroit, MI (KDTX), launched 00:00Z, 0.6 hours before the alert went out and 148 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
- 229 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 1292 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 108 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
331
WUUS53 KIWX 070033
SVRIWX
MIC023-059-070130-
/O.NEW.KIWX.SV.W.0071.210807T0033Z-210807T0130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Northern Indiana
833 PM EDT Fri Aug 6 2021
The National Weather Service in Northern Indiana has issued a
* Severe Thunderstorm Warning for...
Central Branch County in southwestern Michigan...
Northwestern Hillsdale County in southeastern Michigan...
* Until 930 PM EDT.
* At 832 PM EDT, a severe thunderstorm was located near Coldwater,
moving northeast at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Coldwater, Jonesville, Quincy, Union City, Litchfield, Girard,
Kinderhook, Batavia, Sherwood, Allen, South Butler, Marble Lake,
Lake Of The Woods, Hodunk and Coldwater Lake.
This includes Interstate 69 in Michigan between mile markers 1 and
21.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4207 8455 4176 8498 4176 8500 4199 8524
4207 8512
TIME...MOT...LOC 0032Z 239DEG 24KT 4191 8508
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
NWS2 follow-up statements
028
WWUS53 KIWX 070059
SVSIWX
Severe Weather Statement
National Weather Service Northern Indiana
859 PM EDT Fri Aug 6 2021
MIC023-059-070130-
/O.CON.KIWX.SV.W.0071.000000T0000Z-210807T0130Z/
Branch MI-Hillsdale MI-
859 PM EDT Fri Aug 6 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR EASTERN BRANCH AND NORTHWESTERN HILLSDALE COUNTIES...
At 859 PM EDT, severe thunderstorms were located along a line
extending from near Coldwater to 6 miles north of Fremont, moving
northeast at 20 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Coldwater, Jonesville, Quincy, Litchfield, Girard, Kinderhook, Allen,
South Butler, Marble Lake, Hodunk and Coldwater Lake.
This includes Interstate 69 in Michigan between mile markers 1 and
21.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4207 8455 4176 8498 4176 8500 4201 8507
4207 8508
TIME...MOT...LOC 0059Z 234DEG 16KT 4201 8502 4183 8490
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
NWS333
WWUS53 KIWX 070112
SVSIWX
Severe Weather Statement
National Weather Service Northern Indiana
912 PM EDT Fri Aug 6 2021
MIC023-059-070121-
/O.CAN.KIWX.SV.W.0071.000000T0000Z-210807T0130Z/
Branch MI-Hillsdale MI-
912 PM EDT Fri Aug 6 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN BRANCH AND
NORTHWESTERN HILLSDALE COUNTIES IS CANCELLED...
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning has
been cancelled.
LAT...LON 4207 8455 4176 8498 4176 8500 4201 8507
4207 8508
TIME...MOT...LOC 0108Z 239DEG 24KT 4204 8495 4186 8483
$$
NWSThe office that day
Everything else NWS Northern Indiana issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 8:07 PM EDT | Special Weather Statement | IWX | Branch | 53 min |
| Aug 7, 12:23 AM EDT | Areal Flood Advisory | IWX | Cass | 3 hr |
| Aug 7, 12:54 AM EDT | Areal Flood Advisory | IWX | Saint Joseph | 3 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.