Alert archive / Michigan / Tornado Warnings in 2011

Tornado Warning 7, NWS Detroit, MI

May 29, 2011Oakland County, Michigan

NWS Detroit, MI issued this tornado warning at May 29, 2011, 5:47 PM EDT for Oakland County, Michigan. It was in force for 42 min. 2 reports 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 29, 2011, 5:47 PM EDT (21:47 UTC)
Expired: May 29, 2011, 6:29 PM EDT
In force: 42 min
Issued by: NWS Detroit, MI
Area: Storm-based polygon

County Oakland County, MI

The radar

The Detroit radar (KDTX), 6 km from the middle of the area, began a volume at 21:50 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 29, 5:50 PM EDT	TSTM WND DMG	Commerce, MI	NUMEROUS 6 TO 8 INCH DIAMTER TREE LIMBS DOWN.
May 29, 5:50 PM EDT	TSTM WND DMG	Holly, MI	2 TO 5 INCH DIAMETER TREE LIMBS BLOWN DOWN.

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 29, 1:29 PM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 9.8 hours before the alert went out and 10 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: 12 J/kg
Mixed-layer CIN: -294 J/kg
Mixed-layer LCL: 499 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 128 m²/s²
0-3 km storm-relative helicity: 298 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

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

956 
WFUS53 KDTX 292147
TORDTX
MIC125-292245-
/O.NEW.KDTX.TO.W.0007.110529T2147Z-110529T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
547 PM EDT SUN MAY 29 2011

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A

* TORNADO WARNING FOR...
  OAKLAND COUNTY IN SOUTHEAST MICHIGAN...

* UNTIL 645 PM EDT

* AT 546 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE SQUALL LINE CAPABLE OF PRODUCING BRIEF RAIN-WRAPPED
  TORNADOES IN ADDITION TO WIDESPREAD STRAIGHT LINE WIND DAMAGE. THIS
  DANGEROUS STORM WAS LOCATED NEAR HARTLAND...AND MOVING EAST AT 55
  MPH.

* THIS DANGEROUS STORM WILL BE NEAR...
  WHITE LAKE AROUND 555 PM EDT.
  COMMERCE AND WOLVERINE LAKE AROUND 600 PM EDT.
  WATERFORD AND SYLVAN LAKE AROUND 605 PM EDT.
  PONTIAC AND AUBURN HILLS AROUND 610 PM EDT.
  ROCHESTER HILLS AND ROCHESTER AROUND 615 PM EDT.

THE WARNING INCLUDES AREAS SURROUNDING THESE LOCATIONS...
  WEST BLOOMFIELD...    TROY...               SOUTHFIELD...
  SOUTH LYON...         ROYAL OAK...          ROCHESTER...
  PONTIAC...            OXFORD...             ORTONVILLE...
  NOVI...               MILFORD...            HOLLY...
  CLARKSTON...          BIRMINGHAM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4243 8366 4273 8368 4274 8369 4287 8369
      4289 8310 4245 8308
TIME...MOT...LOC 2147Z 268DEG 49KT 4264 8369

$$

SF/AD

3 follow-up statements

356 
WWUS53 KDTX 292200
SVSDTX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
600 PM EDT SUN MAY 29 2011

MIC125-292245-
/O.CON.KDTX.TO.W.0007.000000T0000Z-110529T2245Z/
OAKLAND MI-
600 PM EDT SUN MAY 29 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR OAKLAND COUNTY UNTIL 645
PM EDT...

AT 558 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE SQUALL LINE CAPABLE OF PRODUCING DAMAGING STRAIGHT LINE WINDS
AND BRIEF RAIN-WRAPPED TORNADOES.  THESE DANGEROUS STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM ORTONVILLE TO WEST BLOOMFIELD...
MOVING EAST AT 55 MPH.

THESE DANGEROUS STORMS WILL BE NEAR...
  HAZEL PARK AND FERNDALE AROUND 610 PM EDT.
  LAKEVILLE AND ROCHESTER AROUND 615 PM EDT.

THE WARNING INCLUDES AREAS SURROUNDING THESE LOCATIONS...
  WEST BLOOMFIELD...    TROY...               SOUTHFIELD...
  SOUTH LYON...         ROYAL OAK...          ROCHESTER...
  PONTIAC...            OXFORD...             ORTONVILLE...
  NOVI...               MILFORD...            HOLLY...
  CLARKSTON...          BIRMINGHAM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 4243 8366 4273 8368 4274 8369 4287 8369
      4289 8310 4245 8308
TIME...MOT...LOC 2201Z 266DEG 49KT 4286 8344 4256 8329

$$

SF/AD

333 
WWUS53 KDTX 292215
SVSDTX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
615 PM EDT SUN MAY 29 2011

MIC125-292245-
/O.CON.KDTX.TO.W.0007.000000T0000Z-110529T2245Z/
OAKLAND MI-
615 PM EDT SUN MAY 29 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR EASTERN OAKLAND COUNTY
UNTIL 645 PM EDT...

AT 614 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE SQUALL LINE CAPABLE OF PRODUCING DAMAGING STRAIGHT LINE WINDS
AND BRIEF RAIN-WRAPPED TORNADOES.  THESE DANGEROUS STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM OXFORD TO STERLING HEIGHTS...
MOVING EAST AT 55 MPH.

THESE DANGEROUS STORMS WILL AFFECT MAINLY RURAL AREAS OF EASTERN
OAKLAND COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 4244 8335 4288 8337 4289 8310 4245 8308
TIME...MOT...LOC 2216Z 266DEG 49KT 4287 8316 4255 8305

$$

SF/AD

626 
WWUS53 KDTX 292229 RRA
SVSDTX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
629 PM EDT SUN MAY 29 2011

MIC125-292240-
/O.CAN.KDTX.TO.W.0007.000000T0000Z-110529T2245Z/
OAKLAND MI-
629 PM EDT SUN MAY 29 2011

...THE TORNADO WARNING FOR EASTERN OAKLAND COUNTY IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA.

LAT...LON 4244 8335 4288 8337 4289 8310 4245 8308
TIME...MOT...LOC 2230Z 266DEG 49KT 4288 8290 4256 8279

$$

SF/AD

The office that day

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

Issued	Product	Office	Counties	Lasted
May 29, 11:26 AM EDT	Flood Watch	DTX	Genesee, Lapeer, Lenawee, Livingston, Macomb, Monroe and 5 more	8 hr
May 29, 4:41 PM EDT	Severe Thunderstorm Warning	DTX	Lenawee	69 min
May 29, 4:55 PM EDT	Tornado Warning	DTX	Lenawee	56 min
May 29, 5:02 PM EDT	Tornado Warning	DTX	Livingston, Washtenaw	53 min
May 29, 5:04 PM EDT	Special Marine Warning	DTX		71 min
May 29, 5:18 PM EDT	Severe Thunderstorm Warning	DTX	Monroe	87 min
May 29, 5:22 PM EDT	Tornado Warning	DTX	Genesee, Shiawassee	83 min
May 29, 5:28 PM EDT	Severe Thunderstorm Warning	DTX	Oakland	77 min
May 29, 5:30 PM EDT	Special Marine Warning	DTX		75 min
May 29, 5:36 PM EDT	Tornado Warning	DTX	Monroe	45 min
May 29, 5:46 PM EDT	Severe Thunderstorm Warning	DTX	Wayne	34 min
May 29, 5:55 PM EDT	Flash Flood Warning	DTX	Shiawassee	2 hr
May 29, 5:57 PM EDT	Severe Thunderstorm Warning	DTX	Lapeer	78 min
May 29, 6:13 PM EDT	Severe Thunderstorm Warning	DTX	Macomb, Saint Clair	36 min
May 29, 6:16 PM EDT	Special Marine Warning	DTX		66 min

Nearby

Tornado Warnings in Michigan, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.