Alert archive / Michigan / Tornado Warnings in 2007

Tornado Warning 18, NWS Northern Indiana

May 15, 2007Cass County, Michigan

NWS Northern Indiana issued this tornado warning at May 15, 2007, 5:14 PM EDT for Cass County, Michigan. It was in force for 46 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
May 15, 2007, 5:14 PM EDT (21:14 UTC)
Expired
May 15, 2007, 6:00 PM EDT
In force
46 min
Issued by
NWS Northern Indiana
Area
Counties, with a storm outline in the text

County Cass County, MI

The radar

The Northern Indiana radar (KIWX), 64 km from the middle of the area, began a volume at 21:13 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 15, 1:53 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 9.2 hours before the alert went out and 226 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-pSkew-T log-p diagram, Detroit, MI at 12:00Z on 2007-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Detroit, MI at 12:00Z on 2007-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 183 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1711 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
183 m²/s²
0-3 km storm-relative helicity
162 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS53 KIWX 152114
TORIWX
MIC027-152200-
/O.NEW.KIWX.TO.W.0018.070515T2114Z-070515T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
514 PM EDT TUE MAY 15 2007

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN CASS COUNTY IN SOUTHWEST MICHIGAN

* UNTIL 600 PM EDT

* AT 508 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION.  THIS SEVERE STORM WAS
  LOCATED 7 MILES WEST OF EAGLE LAKE...OR ABOUT 4 MILES NORTH OF
  GRANGER...AND MOVING EAST AT 40 MPH.

* LOCATIONS IN THE PATH OF THE SEVERE STORM INCLUDE...
  JUNO LAKE...ADAMSVILLE AND CASSOPOLIS...
  CALVIN CENTER...DIAMOND LAKE AND UNION...
  PARADISE LAKE...SHAVEHEAD LAKE AND DONNELL LAKE...
  JONES AND WAKELEE...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING  
DESTRUCTIVE STRAIGHT LINE WINDS IN EXCESS OF 70 MPH.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 4196 8607 4176 8607 4178 8576 4204 8576

$$
1 follow-up statement
000 
WWUS53 KIWX 152159
SVSIWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
559 PM EDT TUE MAY 15 2007

MIC027-152209-
/O.EXP.KIWX.TO.W.0018.000000T0000Z-070515T2200Z/
CASS MI-
559 PM EDT TUE MAY 15 2007

...THE TORNADO WARNING FOR EASTERN CASS COUNTY IN SOUTHWEST MICHIGAN
EXPIRES AT 600 PM EDT...

AT 558 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF 
THE AREA.  THEREFORE...THE TORNADO WARNING WILL BE  ALLOWED TO 
EXPIRE AT 600 PM EDT.

IF YOU HAVE SEVERE WEATHER TO REPORT...YOU CAN CALL YOUR LOCAL LAW
ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4196 8607 4176 8607 4178 8576 4204 8576

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 15, 2:30 PM EDTSevere Thunderstorm WarningIWXBranch38 min
May 15, 3:18 PM EDTSevere Thunderstorm WarningIWXHillsdale27 min
May 15, 4:13 PM EDTTornado WarningIWXBerrien41 min
May 15, 4:44 PM EDTTornado WarningIWXBerrien, Cass46 min
May 15, 5:04 PM EDTTornado WarningIWXBerrien26 min
May 15, 5:26 PM EDTSevere Thunderstorm WarningIWXBranch, Saint Joseph64 min
May 15, 5:37 PM EDTTornado WarningIWXSaint Joseph38 min
May 15, 6:13 PM EDTSevere Thunderstorm WarningIWXHillsdale47 min
May 15, 6:46 PM EDTSevere Thunderstorm WarningIWXHillsdale29 min

Nearby

Tornado Warnings in Michigan, 2007Every tornado warning in 2007Tornadoes in 2007

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.