Alert archive / Oklahoma / Tornado Warnings in 2007

Tornado Warning 3, NWS Norman, OK

March 29, 2007Canadian County, Oklahoma County, Oklahoma

NWS Norman, OK issued this tornado warning at Mar 29, 2007, 4:12 PM CDT for Canadian County, Oklahoma County, Oklahoma. It was in force for 33 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: Mar 29, 2007, 4:12 PM CDT (21:12 UTC)
Expired: Mar 29, 2007, 4:45 PM CDT
In force: 33 min
Issued by: NWS Norman, OK
Area: Counties, with a storm outline in the text

Counties Canadian County, OK, Oklahoma County, OK

The radar

The Norman radar (KTLX), 50 km from the middle of the area, began a volume at 21:14 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
Mar 29, 4:20 PM CDT	TORNADO	4 Se Piedmont, OK	SPOTTER REPORTED TORNADO WITH POWER FLASHES.
Mar 29, 4:30 PM CDT	TORNADO	3 Ne Yukon, OK	HIGHWAY PATROL REPORTES KILPATRICK TURNPIKE SOUTHBOUND AT MORGAN ROAD IS CLOSED DUE TO TORNADO DAMAGE. REPORT OF 18 WHEELER AND 8-10 OTHER AUTOMOBILES BLOWN OFF HIGHWAY. HOUSE REPORTED DAMAGED IN THIS AREA AS WELL.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 9.2 hours before the alert went out and 51 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: 1152 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 475 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 248 m²/s²
0-3 km storm-relative helicity: 264 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 6.7

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KOUN 292111
TOROUN
OKC017-109-292145-
/O.NEW.KOUN.TO.W.0003.070329T2112Z-070329T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
412 PM CDT THU MAR 29 2007

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...
  CANADIAN COUNTY IN CENTRAL OKLAHOMA...
  OKLAHOMA COUNTY IN CENTRAL OKLAHOMA...

* UNTIL 445 PM CDT

* AT 412 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 5 MILES
  NORTHWEST OF BETHANY...MOVING NORTH AT 35 MPH.

* LOCATIONS IN THE WARNING INCLUDE BETHANY...PIEDMONT AND WARR ACRES.

TAKE COVER NOW. LEAVE MOBILE HOMES AND VEHICLES. IF POSSIBLE...MOVE
TO A BASEMENT OR STORM SHELTER. OTHERWISE MOVE TO AN INTERIOR ROOM OR
HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS AND OUTSIDE
WALLS.

LAT...LON 3552 9779 3548 9761 3573 9762 3573 9779

$$

BURKE

4 follow-up statements

000 
WWUS54 KOUN 292115
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
415 PM CDT THU MAR 29 2007

OKC017-109-292145-
/O.CON.KOUN.TO.W.0003.000000T0000Z-070329T2145Z/
CANADIAN OK-OKLAHOMA OK-
415 PM CDT THU MAR 29 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR OKLAHOMA
AND CANADIAN COUNTIES...

AT 415 PM CDT...DOPPLER RADAR AND STORM SPOTTERS OBSERVED AT 122ND 
STREET AND MORGAN ROAD...CAUSING DAMAGE MOVEMENT WAS NORTH AT 35 MPH.

* LOCATIONS IN THE WARNING INCLUDE BETHANY...PIEDMONT AND WARR ACRES.

* THE TORNADO WILL BE NEAR...
  PIEDMONT AROUND 425 PM CDT...

DO NOT STOP UNDER BRIDGES OR HIGHWAY OVERPASSES SINCE THEY OFFER NO
PROTECTION FROM TORNADO WINDS. STOPPING UNDER BRIDGES WILL BLOCK THE
ROAD AND PREVENT YOU AND OTHERS FROM REACHING SAFE SHELTER.

THIS TORNADO IS LIKELY OBSCURED BY RAIN AND MAY NOT BE VISIBLE.
ABANDON MOBILE HOMES AND VEHICLES. IF POSSIBLE... MOVE TO A BASEMENT
OR STORM SHELTER. OTHERWISE MOVE TO AN INTERIOR ROOM OR HALLWAY ON
THE LOWEST FLOOR. STAY AWAY FROM WINDOWS.

LAT...LON 3552 9779 3548 9761 3573 9762 3573 9779

$$

BURKE

000 
WWUS54 KOUN 292121
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
421 PM CDT THU MAR 29 2007

OKC017-109-292145-
/O.CON.KOUN.TO.W.0003.000000T0000Z-070329T2145Z/
CANADIAN OK-OKLAHOMA OK-
421 PM CDT THU MAR 29 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR OKLAHOMA
AND CANADIAN COUNTIES...

AT 421 PM CDT...DOPPLER RADAR AND STORM SPOTTERS OBSERVED A TORNADO 4
MILES SOUTHEAST OF PIEDMONT...MOVING NORTH AT 35 MPH. THE TORNADO 
MAY TURN TOWARD THE NORTHWEST...BRINGING IT CLOSER TO PIEDMONT.

* LOCATIONS IN THE WARNING INCLUDE BETHANY...PIEDMONT AND WARR ACRES.

THIS TORNADO IS LIKELY OBSCURED BY RAIN AND MAY NOT BE VISIBLE.
ABANDON MOBILE HOMES AND VEHICLES. IF POSSIBLE... MOVE TO A BASEMENT
OR STORM SHELTER. OTHERWISE MOVE TO AN INTERIOR ROOM OR HALLWAY ON
THE LOWEST FLOOR. STAY AWAY FROM WINDOWS.

LAT...LON 3552 9779 3548 9761 3573 9762 3573 9779

$$

BURKE

000 
WWUS54 KOUN 292131
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
430 PM CDT THU MAR 29 2007

OKC017-109-292145-
/O.CON.KOUN.TO.W.0003.000000T0000Z-070329T2145Z/
CANADIAN OK-OKLAHOMA OK-
430 PM CDT THU MAR 29 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR OKLAHOMA
AND CANADIAN COUNTIES...

AT 430 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 4 MILES NORTHEAST 
OF PIEDMONT...MOVING NORTH AT 35 MPH. THE STORM WILL MOVE OUT OF 
CANADIAN COUNTY BY 445 PM.

* LOCATIONS IN THE WARNING INCLUDE BETHANY...PIEDMONT AND WARR ACRES.

TAKE COVER NOW. LEAVE MOBILE HOMES AND VEHICLES. IF POSSIBLE...MOVE
TO A BASEMENT OR STORM SHELTER. OTHERWISE MOVE TO AN INTERIOR ROOM OR
HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS AND OUTSIDE
WALLS.

LAT...LON 3552 9779 3548 9761 3573 9762 3573 9779

$$

BURKE

000 
WWUS54 KOUN 292136
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
435 PM CDT THU MAR 29 2007

OKC017-109-292145-
/O.EXP.KOUN.TO.W.0003.000000T0000Z-070329T2145Z/
CANADIAN OK-OKLAHOMA OK-
435 PM CDT THU MAR 29 2007

...THE TORNADO WARNING FOR OKLAHOMA AND CANADIAN COUNTIES EXPIRES AT
445 PM CDT...

THE STORM HAS MOVED OUT OF THE AREA... AND VIEWS FROM SEVERAL 
DOPPLER RADARS INDICATE THE CIRCULATION HAS WEAKENED CONSIDERABLY.

LAT...LON 3552 9779 3548 9761 3573 9762 3573 9779

$$

BURKE

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 29, 1:04 AM CDT	Severe Thunderstorm Warning	OUN	Ellis	26 min
Mar 29, 1:11 AM CDT	Severe Thunderstorm Warning	OUN	Harper	49 min
Mar 29, 3:45 PM CDT	Flood Watch	OUN	Alfalfa, Atoka, Blaine, Bryan, Caddo, Canadian and 33 more	36 hr
Mar 29, 4:47 PM CDT	Tornado Warning	OUN	Grant	28 min

Nearby

Tornado Warnings in Oklahoma, 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.