Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 30, NWS Northern Indiana
NWS Northern Indiana issued this severe thunderstorm warning at Jun 20, 2021, 8:57 PM EDT for Hillsdale County, Michigan. It was in force for 33 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
- Jun 20, 2021, 8:57 PM EDT (00:57 UTC)
- Expired
- Jun 20, 2021, 9:30 PM EDT
- In force
- 33 min
- Issued by
- NWS Northern Indiana
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Hillsdale County, MI
The radar
The Northern Indiana radar (KIWX), 110 km from the middle of the area, began a volume at 01:00 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 |
|---|---|---|---|
| Jun 20, 9:05 PM EDT | TSTM WND DMG | Hillsdale, MI | LARGE LIMBS DOWNED. |
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 |
|---|---|---|---|
| Jun 20, 6:06 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Detroit, MI (KDTX), launched 00:00Z, 1.0 hours before the alert went out and 133 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
- 133 J/kg
- Mixed-layer CIN
- -112 J/kg
- Mixed-layer LCL
- 1501 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
972
WUUS53 KIWX 210057
SVRIWX
MIC059-210130-
/O.NEW.KIWX.SV.W.0030.210621T0057Z-210621T0130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Northern Indiana
857 PM EDT Sun Jun 20 2021
The National Weather Service in Northern Indiana has issued a
* Severe Thunderstorm Warning for...
Hillsdale County in southeastern Michigan...
* Until 930 PM EDT.
* At 857 PM EDT, a severe thunderstorm was located near Reading, or 8
miles south of Hillsdale, moving northeast at 50 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Hillsdale, Jonesville, Reading, Long Lake, Jerome, Somerset,
Cambria, Pittsford, Moscow, Ransom, Camden, North Adams, Bear Lake,
Lake Wilson, Frontier, Shadyside, Osseo and Somerset Center.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4188 8436 4170 8466 4170 8468 4183 8483
4187 8482 4207 8454 4207 8437
TIME...MOT...LOC 0057Z 227DEG 43KT 4181 8468
HAIL...0.75IN
WIND...60MPH
$$
Brown3 follow-up statements
575
WWUS53 KIWX 210110
SVSIWX
Severe Weather Statement
National Weather Service Northern Indiana
910 PM EDT Sun Jun 20 2021
MIC059-210130-
/O.CON.KIWX.SV.W.0030.000000T0000Z-210621T0130Z/
Hillsdale MI-
910 PM EDT Sun Jun 20 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR CENTRAL HILLSDALE COUNTY...
At 910 PM EDT, a severe thunderstorm was located near Hillsdale,
moving northeast at 50 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Hillsdale, Jonesville, Jerome, Somerset, Cambria, Pittsford, Moscow,
North Adams, Bear Lake, Lake Wilson, Frontier, Shadyside, Osseo and
Somerset Center.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4188 8436 4176 8457 4177 8462 4185 8474
4190 8475 4207 8454 4207 8437
TIME...MOT...LOC 0110Z 227DEG 43KT 4192 8452
HAIL...0.75IN
WIND...60MPH
$$
Brown588
WWUS53 KIWX 210119
SVSIWX
Severe Weather Statement
National Weather Service Northern Indiana
919 PM EDT Sun Jun 20 2021
MIC059-210130-
/O.CON.KIWX.SV.W.0030.000000T0000Z-210621T0130Z/
Hillsdale MI-
919 PM EDT Sun Jun 20 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR NORTHEASTERN HILLSDALE COUNTY...
At 919 PM EDT, a severe thunderstorm was located near Addison, or 10
miles north of Hudson, moving northeast at 50 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Jerome, Somerset, Pittsford, Moscow, North Adams and Somerset Center.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4181 8447 4184 8450 4191 8455 4200 8462
4207 8454 4207 8437 4188 8436
TIME...MOT...LOC 0119Z 227DEG 43KT 4199 8441
HAIL...0.75IN
WIND...60MPH
$$
Brown046
WWUS53 KIWX 210125
SVSIWX
Severe Weather Statement
National Weather Service Northern Indiana
925 PM EDT Sun Jun 20 2021
MIC059-210135-
/O.EXP.KIWX.SV.W.0030.000000T0000Z-210621T0130Z/
Hillsdale MI-
925 PM EDT Sun Jun 20 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN HILLSDALE COUNTY
WILL EXPIRE AT 930 PM EDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However heavy rain
is still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 100 AM EDT for
southeastern Michigan.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Northern Indiana.
LAT...LON 4181 8447 4184 8450 4191 8455 4200 8462
4207 8454 4207 8437 4188 8436
TIME...MOT...LOC 0125Z 227DEG 43KT 4202 8437
$$
BrownThe office that day
Everything else NWS Northern Indiana issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 8:11 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Saint Joseph | 37 min |
| Jun 20, 9:38 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Hillsdale | 52 min |
| Jun 20, 9:57 PM EDT | Tornado Warning | IWX | Branch, Hillsdale | 33 min |
| Jun 20, 10:15 PM EDT | Tornado Warning | IWX | Branch, Hillsdale | 45 min |
| Jun 20, 10:57 PM EDT | Special Weather Statement | IWX | Berrien | 33 min |
| Jun 20, 11:37 PM EDT | Special Weather Statement | IWX | Cass | 23 min |
| Jun 20, 11:47 PM EDT | Special Weather Statement | IWX | Cass | 28 min |
| Jun 21, 12:37 AM EDT | Severe Thunderstorm Warning | IWX | Berrien | 38 min |
| Jun 21, 12:47 AM EDT | Severe Thunderstorm Warning | IWX | Berrien, Cass | 43 min |
| Jun 21, 1:26 AM EDT | Tornado Warning | IWX | Berrien, Cass, Saint Joseph | 34 min |
| Jun 21, 1:30 AM EDT | Severe Thunderstorm Warning | IWX | Berrien, Cass | 45 min |
| Jun 21, 1:58 AM EDT | Severe Thunderstorm Warning | IWX | Branch, Cass, Saint Joseph | 34 min |
| Jun 21, 2:35 AM EDT | Special Weather Statement | IWX | Branch, Hillsdale | 55 min |
| Jun 21, 2:49 AM EDT | Special Weather Statement | IWX | Branch, Hillsdale | 26 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.