Alert archive / Michigan / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 99, NWS Northern Indiana
NWS Northern Indiana issued this severe thunderstorm warning at Aug 4, 2012, 6:50 PM EDT for Berrien County, Cass County, Saint Joseph County, Michigan. It was in force for 28 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 4, 2012, 6:50 PM EDT (22:50 UTC)
- Expired
- Aug 4, 2012, 7:18 PM EDT
- In force
- 28 min
- Issued by
- NWS Northern Indiana
- Area
- Storm-based polygon
- Hail
- 0.5 in
- Wind
- 60.0 mph
Counties Berrien County, MI, Cass County, MI, Saint Joseph County, MI
The radar
The Northern Indiana radar (KIWX), 90 km from the middle of the area, began a volume at 22:52 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 4, 6:52 PM EDT | TSTM WND DMG | Edwardsburg, MI | FOUR TREES DOWN. TIME ESTIMATED FROM RADAR. |
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 |
|---|---|---|---|
| Aug 4, 5:35 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 10.8 hours before the alert went out and 238 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
- 79 J/kg
- Mixed-layer CIN
- -100 J/kg
- Mixed-layer LCL
- 1364 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- -15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
318
WUUS53 KIWX 042250
SVRIWX
MIC021-027-149-042330-
/O.NEW.KIWX.SV.W.0099.120804T2250Z-120804T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
650 PM EDT SAT AUG 4 2012
THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CASS COUNTY IN SOUTHWEST MICHIGAN...
NORTHERN ST. JOSEPH COUNTY IN SOUTHWEST MICHIGAN...
NORTHEASTERN BERRIEN COUNTY IN SOUTHWEST MICHIGAN...
* UNTIL 730 PM EDT
* AT 647 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THESE SEVERE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM ST. JOSEPH TO BERRIEN SPRINGS TO EDWARDSBURG...AND
MOVING NORTHEAST AT 40 MPH.
* LOCATIONS IN THE PATH OF SEVERE THUNDERSTORMS INCLUDE...
BENTON HARBOR AND BENTON HEIGHTS...
DOWAGIAC AND CASSOPOLIS...
COLOMA AND LAKE MICHIGAN BEACH...
PAW PAW LAKE AND WATERVLIET...
MARCELLUS...
OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
POKAGON...DAILEY...EAGLE LAKE...SODUS...INDIAN LAKE...SPINKS
CORNERS...MILLBURG...RIVERSIDE...SANDY BEACH...LA GRANGE...PARADISE
LAKE AND MAGICIAN LAKE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
MPH. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS!
TO REPORT SEVERE WEATHER...POST YOUR INFORMATION ON THE NATIONAL
WEATHER SERVICE NORTHERN INDIANA FACEBOOK PAGE...OR YOU CAN POST ON
TWITTER WITH THE HASH TAG... @ N W S I W X. REPORTS CAN ALSO BE MADE
TO THE NATIONAL PUBLIC OBSERVATION REPORTING HOTLINE TOLL FREE AT
877-633-6772.
&&
LAT...LON 4225 8622 4208 8622 4207 8531 4189 8586
4177 8607 4193 8642 4207 8654 4213 8650
4218 8644 4225 8638
TIME...MOT...LOC 2250Z 235DEG 36KT 4209 8649 4199 8635
4178 8606
WIND...HAIL 60MPH <.50IN
$$1 follow-up statement
236
WWUS53 KIWX 042318
SVSIWX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
718 PM EDT SAT AUG 4 2012
MIC021-027-149-042328-
/O.CAN.KIWX.SV.W.0099.000000T0000Z-120804T2330Z/
BERRIEN MI-ST. JOSEPH MI-CASS MI-
718 PM EDT SAT AUG 4 2012
...THE SEVERE THUNDERSTORM WARNING FOR CASS...NORTHWESTERN ST. JOSEPH
AND NORTHEASTERN BERRIEN COUNTIES IS CANCELLED...
AT 715 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE LINE OF SEVERE THUNDERSTORMS WHICH PROMPTED THE WARNING HAD
WEAKENED AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TO REPORT SEVERE WEATHER...POST YOUR INFORMATION ON THE NATIONAL
WEATHER SERVICE NORTHERN INDIANA FACEBOOK PAGE...OR YOU CAN POST ON
TWITTER WITH THE HASH TAG... @ N W S I W X. REPORTS CAN ALSO BE MADE
TO THE NATIONAL PUBLIC OBSERVATION REPORTING HOTLINE TOLL FREE AT
877-633-6772.
&&
LAT...LON 4225 8622 4208 8622 4207 8531 4189 8586
4177 8607 4193 8642 4207 8654 4213 8650
4218 8644 4225 8638
TIME...MOT...LOC 2318Z 235DEG 36KT 4225 8618 4215 8604
4194 8575
$$The office that day
Everything else NWS Northern Indiana issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 4:17 PM EDT | Rip Current Statement | IWX | 38 hr | |
| Aug 4, 5:35 PM EDT | Severe Thunderstorm Warning | IWX | Berrien | 70 min |
| Aug 4, 6:08 PM EDT | Severe Thunderstorm Warning | IWX | Berrien, Cass | 52 min |
| Aug 4, 6:18 PM EDT | Tornado Warning | IWX | Berrien | 42 min |
| Aug 4, 6:39 PM EDT | Severe Thunderstorm Warning | IWX | Cass, Saint Joseph | 51 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2012Every severe thunderstorm warning in 2012
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.