Alert archive / Oklahoma / Tornado Warnings in 2004

Tornado Warning 47, NWS Norman, OK

May 29, 2004Canadian County, Oklahoma

NWS Norman, OK issued this tornado warning at May 29, 2004, 8:58 PM CDT for Canadian County, Oklahoma. It was in force for 17 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 29, 2004, 8:58 PM CDT (01:58 UTC)
Expired: May 29, 2004, 9:15 PM CDT
In force: 17 min
Issued by: NWS Norman, OK
Area: Counties, with a storm outline in the text

County Canadian County, OK

The radar

The Norman radar (KTLX), 60 km from the middle of the area, began a volume at 02:01 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.

Issued	Product	Office	Lasted
May 29, 2:55 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 2.0 hours before the alert went out and 62 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: 2169 J/kg
Mixed-layer CIN: -70 J/kg
Mixed-layer LCL: 1245 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 194 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 4.6

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KOUN 300158
TOROKC
OKC017-300215-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
857 PM CDT SAT MAY 29 2004

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

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

* UNTIL 915 PM CDT

* AT 857 PM CDT...A TORNADO WAS DETECTED BY DOPPLER RADAR 3 MILES
  NORTHWEST OF PIEDMONT...MOVING EAST AT 20 MPH.

* LOCATIONS IN THE WARNING INCLUDE PIEDMONT

PERSONS IN PIEDMONT SHOULD REMAIN IN A SAFE PLACE. 

IN ADDITION TO A TORNADO THREAT... THIS STORM LIKELY CONTAINS 
DAMAGING HAIL TO THE SIZE OF BASEBALLS OR LARGER AND WIND GUSTS 
TO 100 MPH.

LAT...LON 3573 9787 3561 9787 3559 9766 3573 9766

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 29, 7:15 PM CDT	Tornado Warning	OUN	Blaine, Canadian	30 min
May 29, 7:19 PM CDT	Severe Thunderstorm Warning	OUN	Kingfisher	41 min
May 29, 7:44 PM CDT	Tornado Warning	OUN	Canadian	31 min
May 29, 7:56 PM CDT	Severe Thunderstorm Warning	OUN	Kingfisher, Logan	49 min
May 29, 8:12 PM CDT	Severe Thunderstorm Warning	OUN	Oklahoma	33 min
May 29, 8:16 PM CDT	Tornado Warning	OUN	Canadian	44 min
May 29, 8:42 PM CDT	Severe Thunderstorm Warning	OUN	Kingfisher, Logan, Oklahoma	48 min
May 29, 8:51 PM CDT	Tornado Warning	OUN	Oklahoma	24 min
May 29, 9:13 PM CDT	Tornado Warning	OUN	Logan, Oklahoma	47 min
May 29, 9:39 PM CDT	Severe Thunderstorm Warning	OUN	Grant	51 min
May 29, 9:57 PM CDT	Tornado Warning	OUN	Lincoln, Logan	48 min
May 29, 10:00 PM CDT	Severe Thunderstorm Warning	OUN	Oklahoma	30 min
May 29, 10:42 PM CDT	Tornado Warning	OUN	Lincoln	48 min
May 29, 10:46 PM CDT	Severe Thunderstorm Warning	OUN	Payne	44 min
May 30, 12:06 PM CDT	Severe Thunderstorm Warning	OUN	Hughes	29 min
May 30, 2:29 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Bryan	46 min

Nearby

Tornado Warnings in Oklahoma, 2004 Every tornado warning in 2004 Tornadoes in 2004

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.