Alert archive / Michigan / Tornado Warnings in 2007

Tornado Warning 2, NWS Grand Rapids, MI

May 15, 2007Calhoun County, Kalamazoo County, Michigan

NWS Grand Rapids, MI issued this tornado warning at May 15, 2007, 6:10 PM EDT for Calhoun County, Kalamazoo County, Michigan. It was in force for 20 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: May 15, 2007, 6:10 PM EDT (22:10 UTC)
Expired: May 15, 2007, 6:30 PM EDT
In force: 20 min
Issued by: NWS Grand Rapids, MI
Area: Counties, with a storm outline in the text

Counties Calhoun County, MI, Kalamazoo County, MI

The radar

The Grand Rapids radar (KGRR), 77 km from the middle of the area, began a volume at 22:13 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.

What was reported inside it

Time	Report	Where	Remark
May 15, 6:18 PM EDT	TSTM WND DMG	Battle Creek, MI	14 TREES DOWN IN THE CITY OF BATTLE CREEK...MOST OF THEM ON THE NORTH SIDE

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
May 15, 1:53 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 10.2 hours before the alert went out and 163 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: 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 KGRR 152210
TORGRR
MIC025-077-152230-
/O.NEW.KGRR.TO.W.0002.070515T2210Z-070515T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
610 PM EDT TUE MAY 15 2007

THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS
HAS ISSUED A

* TORNADO WARNING FOR...
  KALAMAZOO COUNTY IN SOUTHWEST MICHIGAN
  CALHOUN COUNTY IN SOUTH CENTRAL MICHIGAN

* UNTIL 630 PM EDT

* AT 609 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM PRODUCING A TORNADO. THIS STORM WAS LOCATED 4
  MILES SOUTHWEST OF CLIMAX...OR ABOUT 11 MILES SOUTHWEST OF BATTLE
  CREEK...AND MOVING NORTHEAST AT 40 MPH.

* THE TORNADO WILL BE NEAR...
  CLIMAX BY 615 PM EDT
  BATTLE CREEK AND SPRINGFIELD BY 625 PM EDT
  BROWNLEE PARK BY 630 PM EDT

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.

LAT...LON 4218 8549 4209 8541 4227 8498 4242 8517

$$


COBB

2 follow-up statements

000 
WWUS53 KGRR 152219
SVSGRR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
619 PM EDT TUE MAY 15 2007

MIC025-077-152230-
/O.CON.KGRR.TO.W.0002.000000T0000Z-070515T2230Z/
KALAMAZOO MI-CALHOUN MI-
619 PM EDT TUE MAY 15 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM EDT FOR CALHOUN
AND KALAMAZOO COUNTIES...

AT 618 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STORM PRODUCING A TORNADO.  THIS TORNADO WAS LOCATED NEAR WEST
LEROY...OR ABOUT NEAR BATTLE CREEK...AND MOVING NORTHEAST AT 40 MPH.

THE TORNADO WILL BE NEAR...
  LAKEVIEW...BATTLE CREEK...SPRINGFIELD AND OAK PARK BY 625 PM EDT
  SUNRISE HEIGHTS...VERONA...BROWNLEE PARK AND GREENFIELD PARK BY 630
  PM EDT

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.

LAT...LON 4225 8541 4212 8538 4227 8498 4242 8517

$$
BEACHLER

000 
WWUS53 KGRR 152229
SVSGRR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
629 PM EDT TUE MAY 15 2007

MIC025-077-152239-
/O.EXP.KGRR.TO.W.0002.000000T0000Z-070515T2230Z/
KALAMAZOO MI-CALHOUN MI-
629 PM EDT TUE MAY 15 2007

...THE TORNADO WARNING FOR CALHOUN AND KALAMAZOO COUNTIES WILL BE
ALLOWED TO EXPIRE...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORM WHICH PROMPTED THE WARNING HAS EXITED THE WARNED AREA.
THEREFORE THE TORNADO WARNING HAS BEEN ALLOWED TO EXPIRE.

LAT...LON 4225 8541 4212 8538 4227 8498 4242 8517

$$
BEACHLER

The office that day

Everything else NWS Grand Rapids, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 15, 3:22 AM EDT	Severe Thunderstorm Warning	GRR	Newaygo	23 min
May 15, 3:34 AM EDT	Severe Thunderstorm Warning	GRR	Montcalm	41 min
May 15, 4:38 AM EDT	Special Weather Statement	GRR	Gratiot	37 min
May 15, 2:00 PM EDT	Special Weather Statement	GRR	Jackson	30 min
May 15, 2:48 PM EDT	Special Weather Statement	GRR	Jackson	27 min
May 15, 3:12 PM EDT	Special Weather Statement	GRR	Lenawee	33 min
May 15, 3:15 PM EDT	Special Weather Statement	GRR	Isabella	30 min
May 15, 5:00 PM EDT	Severe Thunderstorm Warning	GRR	Van Buren	48 min
May 15, 5:44 PM EDT	Severe Thunderstorm Warning	GRR	Calhoun, Jackson, Kalamazoo	61 min
May 15, 6:29 PM EDT	Severe Thunderstorm Warning	GRR	Eaton, Ingham	46 min

Nearby

Tornado Warnings in Michigan, 2007 Every tornado warning in 2007 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.