Alert archive / Oklahoma / Tornado Warnings in 2003

Tornado Warning 64, NWS Norman, OK

May 9, 2003Canadian County, Oklahoma County, Oklahoma

NWS Norman, OK issued this tornado warning at May 9, 2003, 9:44 PM CDT for Canadian County, Oklahoma County, Oklahoma. 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 9, 2003, 9:44 PM CDT (02:44 UTC)
Expired
May 9, 2003, 10:30 PM CDT
In force
46 min
Issued by
NWS Norman, OK
Area
Counties, with a storm outline in the text
Emergency
Tornado emergency

Counties Canadian County, OK, Oklahoma County, OK

The radar

The Norman radar (KTLX), 51 km from the middle of the area, began a volume at 02:45 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 9, 7:45 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 2.7 hours before the alert went out and 47 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, Norman, OK at 00:00Z on 2003-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2823 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 00:00Z on 2003-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 square meters per square second.1939587897Sfc1 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
2823 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
1182 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
151 m²/s²
Significant tornado parameter
0.5
Supercell composite
2.1

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KOUN 100244
TOROKC
OKC017-109-100330-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
944 PM CDT FRI MAY 9 2003

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

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

* UNTIL 1030 PM CDT

* AT 943 PM CDT...A THUNDERSTORM WITH A HISTORY OF PRODUCING
  TORNADOES WAS LOCATED 3 MILES NORTHWEST OF UNION CITY...MOVING
  NORTHEAST AT 25 MPH.

* LOCATIONS IN THE WARNING INCLUDE BETHANY...DEL CITY...NICHOLS
  HILLS...OKLAHOMA CITY...THE VILLAGE...UNION CITY...WARR ACRES AND
  YUKON

THIS IS A DANGEROUS AND LIFE THREATENING SITUATION. PERSONS IN 
YUKON... MUSTANG... BETHANY... WHEATLAND AND WESTERN SECTION OF 
OKLAHOMA CITY SHOULD SEEK SHELTER IN A BASEMENT... SAFE ROOM... OR 
IN AN INTERIOR ROOM ON THE LOWEST FLOOR NOW TO PROTECT YOUR LIFE

TORNADOES ARE ESPECIALLY DANGEROUS AT NIGHT BECAUSE THEY ARE HARD TO
SEE. TAKE COVER NOW. IF A BASEMENT IS NOT AVAILABLE...MOVE TO AN
INTERIOR ROOM OR HALLWAY ON THE LOWEST FLOOR. LEAVE MOBILE HOMES AND
VEHICLES FOR REINFORCED SHELTER. STAY AWAY FROM WINDOWS.

LAT...LON 3548 9808 3538 9801 3539 9740 3570 9747

$$
 MILLER

The office that day

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

IssuedProductOfficeCountiesLasted
May 9, 7:08 PM CDTSevere Thunderstorm WarningOUNCanadian37 min
May 9, 7:14 PM CDTSevere Thunderstorm WarningOUNGarfield, Logan, Noble46 min
May 9, 7:19 PM CDTSevere Thunderstorm WarningOUNOklahoma41 min
May 9, 7:31 PM CDTSevere Thunderstorm WarningOUNWashita44 min
May 9, 7:39 PM CDTTornado WarningOUNLogan, Noble, Payne51 min
May 9, 7:41 PM CDTSevere Thunderstorm WarningOUNKingfisher34 min
May 9, 7:57 PM CDTSevere Thunderstorm WarningOUNGarfield33 min
May 9, 7:59 PM CDTSevere Thunderstorm WarningOUNOklahoma31 min
May 9, 8:10 PM CDTSevere Thunderstorm WarningOUNCaddo50 min
May 9, 8:16 PM CDTSevere Thunderstorm WarningOUNKay44 min
May 9, 8:17 PM CDTSevere Thunderstorm WarningOUNWashita13 min
May 9, 8:32 PM CDTSevere Thunderstorm WarningOUNNoble28 min
May 9, 8:34 PM CDTSevere Thunderstorm WarningOUNCuster41 min
May 9, 8:47 PM CDTSevere Thunderstorm WarningOUNCanadian, Grady58 min
May 9, 8:55 PM CDTSevere Thunderstorm WarningOUNCaddo35 min
May 9, 9:09 PM CDTTornado WarningOUNCaddo21 min
May 9, 9:16 PM CDTSevere Thunderstorm WarningOUNBlaine, Custer44 min
May 9, 9:18 PM CDTTornado WarningOUNCanadian, Grady27 min
May 9, 9:27 PM CDTTornado WarningOUNBlaine, Custer33 min
May 9, 9:58 PM CDTSevere Thunderstorm WarningOUNBlaine37 min
May 9, 10:07 PM CDTSevere Thunderstorm WarningOUNLogan38 min
May 9, 10:27 PM CDTTornado Warning EmergencyOUNOklahoma48 min
May 9, 10:32 PM CDTSevere Thunderstorm WarningOUNBlaine, Kingfisher43 min
May 9, 10:35 PM CDTSevere Thunderstorm WarningOUNLincoln, Logan55 min
May 9, 10:52 PM CDTTornado WarningOUNLincoln53 min
May 9, 10:55 PM CDTSevere Thunderstorm WarningOUNPayne50 min
May 9, 11:12 PM CDTTornado WarningOUNOklahoma43 min
May 9, 11:41 PM CDTTornado WarningOUNLincoln49 min
May 10, 12:20 AM CDTTornado WarningOUNLincoln25 min
May 10, 11:41 AM CDTSevere Thunderstorm WarningOUNStephens49 min
May 10, 11:57 AM CDTSevere Thunderstorm WarningOUNCleveland48 min
May 10, 11:58 AM CDTSevere Thunderstorm WarningOUNGarvin, McClain47 min
May 10, 12:00 PM CDTSevere Thunderstorm WarningOUNLincoln, Oklahoma45 min
May 10, 12:22 PM CDTSevere Thunderstorm WarningOUNPottawatomie38 min
May 10, 12:44 PM CDTSevere Thunderstorm WarningOUNGarvin, McClain, Pontotoc, Pottawatomie, Seminole46 min
May 10, 1:12 PM CDTSevere Thunderstorm WarningOUNHughes63 min
May 10, 1:31 PM CDTSevere Thunderstorm WarningOUNPontotoc, Seminole44 min
May 10, 2:01 PM CDTSevere Thunderstorm WarningOUNCarter, Jefferson, Love44 min
May 10, 2:20 PM CDTSevere Thunderstorm WarningOUNHughes, Pontotoc55 min
May 10, 2:23 PM CDTSevere Thunderstorm WarningOUNMurray52 min
May 10, 2:45 PM CDTSevere Thunderstorm WarningOUNCarter, Love45 min
May 10, 3:08 PM CDTSevere Thunderstorm WarningOUNCoal67 min
May 10, 3:12 PM CDTSevere Thunderstorm WarningOUNJohnston, Marshall48 min
May 10, 3:14 PM CDTSevere Thunderstorm WarningOUNHughes, Pontotoc61 min

Nearby

Tornado Warnings in Oklahoma, 2003Every tornado warning in 2003Tornadoes in 2003

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.