Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 104, NWS Northern Indiana
NWS Northern Indiana issued this severe thunderstorm warning at Aug 24, 2021, 9:02 PM EDT for Berrien County, Cass County, Saint Joseph County, Michigan; Elkhart County, Saint Joseph County, Indiana. It was in force for 43 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 24, 2021, 9:02 PM EDT (01:02 UTC)
- Expired
- Aug 24, 2021, 9:45 PM EDT
- In force
- 43 min
- Issued by
- NWS Northern Indiana
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Elkhart County, IN, Saint Joseph County, IN, Berrien County, MI, Cass County, MI, Saint Joseph County, MI
The radar
The Northern Indiana radar (KIWX), 42 km from the middle of the area, began a volume at 01:03 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 24, 9:02 PM EDT | TSTM WND GST 42 | South Bend, IN |
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, 1.0 hours before the alert went out and 225 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
- 3040 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1099 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 25 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
539
WUUS53 KIWX 250102
SVRIWX
INC039-141-MIC021-027-149-250145-
/O.NEW.KIWX.SV.W.0104.210825T0102Z-210825T0145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Northern Indiana
902 PM EDT Tue Aug 24 2021
The National Weather Service in Northern Indiana has issued a
* Severe Thunderstorm Warning for...
Elkhart County in north central Indiana...
St. Joseph County in north central Indiana...
Cass County in southwestern Michigan...
St. Joseph County in southwestern Michigan...
Southeastern Berrien County in southwestern Michigan...
* Until 945 PM EDT.
* At 901 PM EDT, severe thunderstorms were located along a line
extending from 6 miles south of Decatur to near Lakeville, moving
east at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
South Bend, Elkhart, Mishawaka, Goshen, Niles, Three Rivers,
Nappanee, Dowagiac, Georgetown, Gulivoire Park, Granger, Dunlap,
Simonton Lake, Middlebury, Osceola, Walkerton, Constantine, North
Liberty, Cassopolis and Wakarusa.
This includes Interstate 80 in Indiana between mile markers 74 and
108.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4207 8529 4201 8529 4176 8555 4176 8566
4165 8566 4144 8587 4144 8606 4148 8606
4147 8647 4146 8648 4207 8610
TIME...MOT...LOC 0101Z 263DEG 34KT 4201 8596 4151 8631
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RTC1 follow-up statement
884
WWUS53 KIWX 250135
SVSIWX
Severe Weather Statement
National Weather Service Northern Indiana
935 PM EDT Tue Aug 24 2021
MIC021-250144-
/O.CAN.KIWX.SV.W.0104.000000T0000Z-210825T0145Z/
Berrien MI-
935 PM EDT Tue Aug 24 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BERRIEN COUNTY IS
CANCELLED...
The storms which prompted the warning have weakened and moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4146 8585 4155 8632 4207 8591 4207 8529
4201 8529 4176 8555 4176 8566 4165 8566
TIME...MOT...LOC 0134Z 265DEG 19KT 4205 8585 4162 8619
$$
INC039-141-MIC027-149-250145-
/O.CON.KIWX.SV.W.0104.000000T0000Z-210825T0145Z/
Elkhart IN-St. Joseph IN-Cass MI-St. Joseph MI-
935 PM EDT Tue Aug 24 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM EDT
FOR ELKHART...NORTHEASTERN ST. JOSEPH...EASTERN CASS AND ST. JOSEPH
COUNTIES...
At 934 PM EDT, severe thunderstorms were located along a line
extending from near Marcellus to near Gulivoire Park, moving east at
20 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
South Bend, Elkhart, Mishawaka, Goshen, Three Rivers, Gulivoire Park,
Granger, Dunlap, Simonton Lake, Middlebury, Osceola, Constantine,
Cassopolis, Wakarusa, Bristol, White Pigeon, Centreville,
Edwardsburg, Marcellus and New Paris.
This includes Interstate 80 in Indiana between mile markers 81 and
108.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4146 8585 4155 8632 4207 8591 4207 8529
4201 8529 4176 8555 4176 8566 4165 8566
TIME...MOT...LOC 0134Z 265DEG 19KT 4205 8585 4162 8619
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RTCThe office that day
Everything else NWS Northern Indiana issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 24, 8:14 PM EDT | Areal Flood Advisory | IWX | Berrien, Cass | 3 hr |
| Aug 24, 8:29 PM EDT | Severe Thunderstorm Warning | IWX | Berrien, Cass | 46 min |
| Aug 24, 8:30 PM EDT | Severe Thunderstorm Warning | IWX | Cass | 30 min |
| Aug 24, 9:40 PM EDT | Special Weather Statement | IWX | Branch | 35 min |
| Aug 24, 8:33 PM EDT | Special Marine Warning | IWX | 57 min | |
| Aug 24, 9:23 PM EDT | Special Marine Warning | IWX | 67 min | |
| Aug 24, 9:57 PM EDT | Special Weather Statement | IWX | LaGrange | 33 min |
| Aug 24, 10:20 PM EDT | Special Weather Statement | IWX | LaGrange | 25 min |
| Aug 24, 10:24 PM EDT | Special Weather Statement | IWX | LaPorte, Starke | 66 min |
| Aug 25, 6:26 PM EDT | Special Weather Statement | IWX | White | 34 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2021Severe Thunderstorm Warnings in Indiana, 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.