Alert archive / Oklahoma / Tornado Warnings in 1999

Tornado Warning 108, NWS Tulsa, OK

December 3, 1999Delaware County, Ottawa County, Oklahoma

NWS Tulsa, OK issued this tornado warning at Dec 3, 1999, 10:04 PM CST for Delaware County, Ottawa County, Oklahoma. It was in force for 41 min. 3 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: Dec 3, 1999, 10:04 PM CST (04:04 UTC)
Expired: Dec 3, 1999, 10:45 PM CST
In force: 41 min
Issued by: NWS Tulsa, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Delaware County, OK, Ottawa County, OK

What was reported inside it

Time	Report	Where
Dec 3, 10:10 PM CST	Hail 0.88	Grove, OK
Dec 3, 10:15 PM CST	Hail 0.88	Wyandotte, OK
Dec 3, 10:25 PM CST	Hail 1	Wyandotte, 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
Dec 3, 8:45 PM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 4.1 hours before the alert went out and 91 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: 1329 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 132 m²/s²
0-3 km storm-relative helicity: 245 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KTSA 040405 RRA
TORTUL
OKC041-115-040445-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
1004 PM CST FRI DEC 3 1999

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* TORNADO WARNING FOR
  NORTHERN DELAWARE COUNTY IN NORTHEAST OKLAHOMA
  SOUTHERN OTTAWA COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 1045 PM CST

* AT 1004 PM CST...RADAR INDICATED A DEVELOPING TORNADO 4 MILES
  NORTHWEST OF GROVE. THIS DANGEROUS STORM IS MOVING NORTH AT 25 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...  WYANDOTTE...
  FAIRLAND...BERNICE AND GROVE

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!

LAT...LON 3666 9496 3658 9489 3654 9480 3678 9445
          3694 9465

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tulsa, OK wrote its last area forecast discussion before this tornado warning went out at Dec 3, 8:55 PM CST, 1 hour 9 minutes earlier.

Area forecast discussion, Dec 3, 8:55 PM CST, 1 hour 9 minutes before

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
855 PM CST FRI DEC 3 1999

UPDATED ZONES TO INCLUDE THE SEVERE THUNDERSTORM WATCH. SEVERE
STORMS DEVELOPED QUaICKLY OVER FAR NORTHEAST OK AND HAVE PRODUCED
DIME TO QUARTER SIZE HAIL.

GENERAL FORECAST LOOKS OKAY AND WILL NOT MAKE ANY CHANGES AT THIS
TIME.

FCSTID = 02

.TUL...
AR...NONE.
OK...NONE.

ABBAS

E

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 3, 8:00 PM CST	Severe Thunderstorm Warning	TSA	Mayes	45 min
Dec 3, 8:02 PM CST	Severe Thunderstorm Warning	TSA	Delaware	28 min
Dec 3, 8:05 PM CST	Severe Thunderstorm Warning	TSA	Ottawa	40 min
Dec 3, 8:11 PM CST	Severe Thunderstorm Warning	TSA	Delaware	49 min
Dec 3, 8:40 PM CST	Severe Thunderstorm Warning	TSA	Nowata, Rogers	50 min
Dec 3, 8:44 PM CST	Severe Thunderstorm Warning	TSA	Mayes	61 min
Dec 3, 8:44 PM CST	Severe Thunderstorm Warning	TSA	Ottawa	61 min
Dec 3, 8:50 PM CST	Severe Thunderstorm Warning	TSA	Tulsa	40 min
Dec 3, 9:08 PM CST	Severe Thunderstorm Warning	TSA	Craig	52 min
Dec 3, 9:47 PM CST	Severe Thunderstorm Warning	TSA	Ottawa	43 min
Dec 3, 9:54 PM CST	Severe Thunderstorm Warning	TSA	Craig	51 min
Dec 3, 10:10 PM CST	Severe Thunderstorm Warning	TSA	Okmulgee	50 min
Dec 3, 10:14 PM CST	Severe Thunderstorm Warning	TSA	Creek, Tulsa	46 min
Dec 3, 10:43 PM CST	Severe Thunderstorm Warning	TSA	Osage, Pawnee	62 min
Dec 3, 10:56 PM CST	Severe Thunderstorm Warning	TSA	Rogers, Tulsa	49 min
Dec 3, 11:20 PM CST	Severe Thunderstorm Warning	TSA	Craig	55 min
Dec 3, 11:26 PM CST	Tornado Warning	TSA	Craig, Mayes, Rogers	34 min
Dec 3, 11:29 PM CST	Tornado Warning	TSA	Tulsa, Wagoner	31 min
Dec 3, 11:39 PM CST	Severe Thunderstorm Warning	TSA	Creek	51 min
Dec 3, 11:51 PM CST	Tornado Warning	TSA	Craig	39 min
Dec 3, 11:57 PM CST	Severe Thunderstorm Warning	TSA	Rogers	48 min
Dec 4, 12:11 AM CST	Severe Thunderstorm Warning	TSA	Ottawa	49 min
Dec 4, 12:14 AM CST	Severe Thunderstorm Warning	TSA	Osage, Pawnee	46 min
Dec 4, 8:11 AM CST	Severe Thunderstorm Warning	TSA	Delaware	49 min
Dec 4, 10:18 AM CST	Severe Thunderstorm Warning	TSA	Sequoyah	42 min
Dec 4, 10:32 AM CST	Severe Thunderstorm Warning	TSA	Adair, Cherokee	43 min

Nearby

Tornado Warnings in Oklahoma, 1999 Every tornado warning in 1999 Tornadoes in 1999

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.