Alert archive / Michigan / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 101, NWS Northern Indiana

August 24, 2021Berrien County, Michigan

NWS Northern Indiana issued this severe thunderstorm warning at Aug 24, 2021, 6:20 PM EDT for Berrien County, Michigan. It was in force for 25 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 24, 2021, 6:20 PM EDT (22:20 UTC)
Expired: Aug 24, 2021, 6:45 PM EDT
In force: 25 min
Issued by: NWS Northern Indiana
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Berrien County, MI

The radar

The Northern Indiana radar (KIWX), 92 km from the middle of the area, began a volume at 22:19 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

Lincoln, IL (KILX), launched 12:00Z, 10.3 hours before the alert went out and 252 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1513 J/kg
Mixed-layer CIN: -147 J/kg
Mixed-layer LCL: 1124 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 65 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

394 
WUUS53 KIWX 242220
SVRIWX
MIC021-242245-
/O.NEW.KIWX.SV.W.0101.210824T2220Z-210824T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Northern Indiana
620 PM EDT Tue Aug 24 2021

The National Weather Service in Northern Indiana has issued a

* Severe Thunderstorm Warning for...
  South central Berrien County in southwestern Michigan...

* Until 645 PM EDT.

* At 619 PM EDT, a severe thunderstorm was located over
  Shorewood-Tower Hills-Harbert, or 12 miles west of Buchanan, and is
  nearly stationary.

  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...
  Bridgman, Three Oaks, Shorewood-Tower Hills-Harbert,
  Shorewood-Tower Hill, New Troy, Harbert, Sawyer, Turner Shores and
  Lakeside In Berrien County.

This includes Interstate 94 in Michigan between mile markers 6 and
16.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4177 8663 4186 8671 4197 8658 4182 8646
TIME...MOT...LOC 2219Z 235DEG 3KT 4186 8661 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

RTC

1 follow-up statement

782 
WWUS53 KIWX 242233
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
633 PM EDT Tue Aug 24 2021

MIC021-242245-
/O.CON.KIWX.SV.W.0101.000000T0000Z-210824T2245Z/
Berrien MI-
633 PM EDT Tue Aug 24 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR SOUTH CENTRAL BERRIEN COUNTY...

At 633 PM EDT, a severe thunderstorm was located over Shorewood-Tower
Hills-Harbert, or 11 miles west of Buchanan, moving east at 5 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...
Bridgman, Three Oaks, Shorewood-Tower Hills-Harbert, Shorewood-Tower
Hill, New Troy, Harbert, Sawyer, Turner Shores and Lakeside In
Berrien County.

This includes Interstate 94 in Michigan between mile markers 6 and
16.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4185 8648 4182 8647 4180 8653 4181 8666
      4183 8669 4187 8670 4195 8661 4195 8656
TIME...MOT...LOC 2233Z 255DEG 6KT 4187 8659 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

RTC

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 24, 3:30 AM EDT	Heat Advisory	IWX	Branch, Cass, Hillsdale, Saint Joseph	18 hr
Aug 24, 3:53 PM EDT	Heat Advisory	IWX	Branch, Cass, Hillsdale, Saint Joseph	29 hr
Aug 24, 5:10 PM EDT	Special Weather Statement	IWX	Berrien	50 min
Aug 24, 6:02 PM EDT	Special Weather Statement	IWX	Berrien	43 min
Aug 24, 6:12 PM EDT	Areal Flood Advisory	IWX	Berrien	3 hr
Aug 24, 6:53 PM EDT	Special Weather Statement	IWX	Cass	52 min
Aug 24, 7:53 PM EDT	Special Weather Statement	IWX	Cass	22 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2021 Every 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.