Alert archive / Oklahoma / Tornado Warnings in 1998

Tornado Warning 4, NWS Tulsa, OK

March 30, 1998Adair County, Cherokee County, Oklahoma

NWS Tulsa, OK issued this tornado warning at Mar 30, 1998, 7:26 PM CST for Adair County, Cherokee County, Oklahoma. It was in force for 49 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Mar 30, 1998, 7:26 PM CST (01:26 UTC)
Expired: Mar 30, 1998, 8:15 PM CST
In force: 49 min
Issued by: NWS Tulsa, OK
Area: Whole counties

Counties Adair County, OK, Cherokee County, OK

The radar

The Tulsa radar (KINX), 73 km from the middle of the area, began a volume at 01:24 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
Mar 30, 7:28 PM CST	Thunderstorm Wind 52	Tahlequah, OK
Mar 30, 7:40 PM CST	Thunderstorm Wind 52	Proctor, 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
Mar 30, 1:00 PM CST	Tornado Watch	SPC	7 hr
Mar 30, 7:00 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 1.4 hours before the alert went out and 145 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: 368 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 1388 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 247 m²/s²
0-3 km storm-relative helicity: 389 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 5.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTUL 310126 RRA
TORTUL
OKC001-021-310215-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
726 PM CST MON MAR 30 1998

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 815 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN EAST CENTRAL OKLAHOMA

   ...ADAIR COUNTY
   ...EASTERN CHEROKEE COUNTY

STORM SPOTTERS REPORTED A POSSIBLE TORNADO NEAR KEYES. DOPPLER RADAR
SHOWED THE STORM ABOUT 3 MILES WEST OF PARK HILL AT 722 PM MOVING
NORTHEAST AT 50 MPH.

WELLING...ELDON...PROCTOR AND CHRISTIE ARE IN THE PATH OF THIS
TORNADO.

IN ADDITION...DAMAGING WINDS MAY AFFECT WESTERN PARTS OF ADAIR
COUNTY AHEAD OF THE DEVELOPING TORNADO. 60 TO 70 MPH WINDS WERE
REPORTED JUST NORTHWEST OF KEYES AT ABOUT 720 PM.

THIS IS A DANGEROUS STORM SITUATION. ACT QUICKLY. IF YOU ARE IN
THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF
AVAILABLE. OTHERWISE... GO TO A SMALL INTERIOR ROOM ON THE LOWEST
FLOOR. AVOID WINDOWS AND DOORS. ABANDON CARS AND MOBILE HOMES FOR
A STURDIER BUILDING OR GET INTO A DITCH OR CULVERT.

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 30, 6:14 PM CST	Severe Thunderstorm Warning	TSA	Muskogee	46 min
Mar 30, 6:23 PM CST	Tornado Warning	TSA	McIntosh	37 min
Mar 30, 6:32 PM CST	Severe Thunderstorm Warning	TSA	Pushmataha	43 min
Mar 30, 6:40 PM CST	Severe Thunderstorm Warning	TSA	Haskell, Latimer	50 min
Mar 30, 6:46 PM CST	Tornado Warning	TSA	Cherokee, Muskogee	44 min
Mar 30, 6:51 PM CST	Severe Thunderstorm Warning	TSA	Sequoyah	39 min
Mar 30, 6:53 PM CST	Severe Thunderstorm Warning	TSA	Pittsburg	52 min
Mar 30, 6:54 PM CST	Tornado Warning	TSA	Sequoyah	51 min
Mar 30, 7:30 PM CST	Severe Thunderstorm Warning	TSA	Latimer, LeFlore, Pushmataha	45 min
Mar 30, 7:30 PM CST	Severe Thunderstorm Warning	TSA	Haskell	45 min
Mar 30, 7:33 PM CST	Tornado Warning	TSA	Sequoyah	42 min
Mar 30, 7:38 PM CST	Severe Thunderstorm Warning	TSA	Delaware	52 min
Mar 30, 7:58 PM CST	Severe Thunderstorm Warning	TSA	Ottawa	32 min
Mar 30, 8:12 PM CST	Severe Thunderstorm Warning	TSA	LeFlore	48 min
Mar 30, 8:53 PM CST	Severe Thunderstorm Warning	TSA	LeFlore	22 min

Nearby

Tornado Warnings in Oklahoma, 1998 Every tornado warning in 1998 Tornadoes in 1998

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.