Alert archive / Oklahoma / Tornado Warnings in 2000

Tornado Warning 31, NWS Tulsa, OK

May 8, 2000Nowata County, Washington County, Oklahoma

NWS Tulsa, OK issued this tornado warning at May 8, 2000, 8:50 PM CDT for Nowata County, Washington County, Oklahoma. It was in force for 25 min. 2 reports came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: May 8, 2000, 8:50 PM CDT (01:50 UTC)
Expired: May 8, 2000, 9:15 PM CDT
In force: 25 min
Issued by: NWS Tulsa, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Nowata County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 84 km from the middle of the area, began a volume at 01:54 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 8, 8:58 PM CDT	Hail 0.88	Bartlesville, OK
May 8, 9:03 PM CDT	Hail 1	Copan, OK

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

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 8, 6:30 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 1.8 hours before the alert went out and 180 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: 1344 J/kg
Mixed-layer CIN: -143 J/kg
Mixed-layer LCL: 1790 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 94 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.5

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KTSA 090151
TORTUL
OKC105-113-147-090215-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
850 PM CDT MON MAY 8 2000

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* TORNADO WARNING FOR
  NORTHERN NOWATA COUNTY IN NORTHEAST OKLAHOMA
  NORTHEASTERN OSAGE COUNTY IN NORTHEAST OKLAHOMA
  NORTHERN WASHINGTON COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 915 PM CDT

* AT 850 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG
  ROTATION 10 MILES WEST OF BARTLESVILLE. MOVING EAST AT 45 MPH...
  THIS DANGEROUS STORM COULD PRODUCE A TORNADO AT ANY TIME.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...  COPAN...
  DEWEY...BARTLESVILLE...HULAH...WANN AND LENAPAH

IF YOU ARE IN OR 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!

IN ADDITION TO THE THREAT OF A TORNADO...LARGE HAIL AND DAMAGING
STRAIGHT LINE WINDS CAN BE EXPECTED WITH THIS STORM. GO TO A SAFE
PLACE NOW!

CALL 1-800-722-2778 TO REPORT SEVERE WEATHER TO THE NATIONAL WEATHER
SERVICEt.

LAT...LON 3699 9581 3689 9620 3669 9611 3685 9549
          3699 9555

The office that day

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

Issued	Product	Office	Counties	Lasted
May 8, 7:31 PM CDT	Severe Thunderstorm Warning	TSA	Osage	59 min
May 8, 8:25 PM CDT	Severe Thunderstorm Warning	TSA	Osage	65 min
May 8, 8:40 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Osage, Washington	65 min
May 8, 8:42 PM CDT	Severe Thunderstorm Warning	TSA	Pawnee	48 min
May 8, 8:50 PM CDT	Tornado Warning	TSA	Osage	25 min
May 8, 9:29 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata	61 min
May 8, 9:34 PM CDT	Severe Thunderstorm Warning	TSA	Pawnee	56 min
May 8, 9:51 PM CDT	Severe Thunderstorm Warning	TSA	Osage	54 min
May 8, 10:46 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	59 min
May 8, 11:13 PM CDT	Severe Thunderstorm Warning	TSA	Washington	47 min
May 8, 11:29 PM CDT	Severe Thunderstorm Warning	TSA	Nowata	61 min
May 8, 11:45 PM CDT	Severe Thunderstorm Warning	TSA	Osage	60 min
May 8, 11:56 PM CDT	Severe Thunderstorm Warning	TSA	Washington	49 min
May 8, 11:58 PM CDT	Severe Thunderstorm Warning	TSA	Craig	62 min
May 9, 1:30 AM CDT	Severe Thunderstorm Warning	TSA	Nowata	45 min
May 9, 3:02 AM CDT	Severe Thunderstorm Warning	TSA	Delaware	43 min

Nearby

Tornado Warnings in Oklahoma, 2000 Every tornado warning in 2000 Tornadoes in 2000

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.