Alert archive / Oklahoma / Tornado Warnings in 2003

Tornado Warning 21, NWS Tulsa, OK

May 1, 2003Cherokee County, Muskogee County, Wagoner County, Oklahoma

NWS Tulsa, OK issued this tornado warning at May 1, 2003, 5:55 PM CDT for Cherokee County, Muskogee County, Wagoner County, Oklahoma. It was in force for 50 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 1, 2003, 5:55 PM CDT (22:55 UTC)
Expired: May 1, 2003, 6:45 PM CDT
In force: 50 min
Issued by: NWS Tulsa, OK
Area: Counties, with a storm outline in the text

Counties Cherokee County, OK, Muskogee County, OK, Wagoner County, OK

The radar

The Tulsa radar (KINX), 49 km from the middle of the area, began a volume at 22:56 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 1, 3:45 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 10.9 hours before the alert went out and 175 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: 816 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: -340 m²/s²
0-3 km storm-relative helicity: -135 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.

981 
WFUS54 KTSA 012255
TORTUL
OKC021-101-145-012345-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
555 PM CDT THU MAY 1 2003

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* TORNADO WARNING FOR
  SOUTHWESTERN CHEROKEE COUNTY IN EAST CENTRAL OKLAHOMA
  NORTHEASTERN MUSKOGEE COUNTY IN EAST CENTRAL OKLAHOMA
  SOUTHEASTERN WAGONER COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 645 PM CDT

* AT 555 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH
  STRONG ROTATION 2 MILES NORTHEAST OF OKAY...MOVING SOUTHEAST AT 20
  MPH. THIS DANGEROUS STORM COULD PRODUCE A TORNADO AT ANY TIME.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...OKAY...BRAGGS
  AND FORT GIBSON.

IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW IF NO
UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS

LAT...LON 3596 9529 3586 9543 3563 9517 3574 9499

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 11:41 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Washington	64 min
May 1, 12:46 AM CDT	Severe Thunderstorm Warning	TSA	Osage	59 min
May 1, 4:21 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee	54 min
May 1, 4:23 PM CDT	Severe Thunderstorm Warning	TSA	Mayes	37 min
May 1, 4:45 PM CDT	Severe Thunderstorm Warning	TSA	Delaware	45 min
May 1, 4:53 PM CDT	Severe Thunderstorm Warning	TSA	Wagoner	37 min
May 1, 5:07 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee	53 min
May 1, 5:25 PM CDT	Severe Thunderstorm Warning	TSA	Delaware	50 min
May 1, 5:30 PM CDT	Severe Thunderstorm Warning	TSA	Wagoner	45 min
May 1, 5:31 PM CDT	Severe Thunderstorm Warning	TSA	Pushmataha	44 min
May 1, 5:57 PM CDT	Flash Flood Warning	TSA	Cherokee	3 hr
May 1, 6:01 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	59 min
May 1, 6:12 PM CDT	Tornado Warning	TSA	Pushmataha	48 min
May 1, 6:29 PM CDT	Tornado Warning	TSA	Sequoyah	46 min
May 1, 6:43 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee	17 min
May 1, 6:56 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	64 min

Nearby

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