Alert archive / Oklahoma / Tornado Warnings in 1998

Tornado Warning 1, NWS Tulsa, OK

March 30, 1998McIntosh County, Oklahoma

NWS Tulsa, OK issued this tornado warning at Mar 30, 1998, 6:23 PM CST for McIntosh County, Oklahoma. It was in force for 37 min. 1 report 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, 6:23 PM CST (00:23 UTC)
Expired: Mar 30, 1998, 7:00 PM CST
In force: 37 min
Issued by: NWS Tulsa, OK
Area: Whole counties

County McIntosh County, OK

The radar

The Tulsa radar (KINX), 90 km from the middle of the area, began a volume at 00:25 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, 6:24 PM CST	Thunderstorm Wind 52	Eufaula, 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

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 0.4 hours before the alert went out and 158 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: 672 m above ground
0-6 km bulk shear: 92 kt
0-1 km storm-relative helicity: -325 m²/s²
0-3 km storm-relative helicity: -26 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.

332 
WFUS54 KTSA 310022 RRA
TORTUL
OKC091-310100-

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

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 700 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN EAST CENTRAL OKLAHOMA

   ...EASTERN MCINTOSH COUNTY

AT 620 PM...DOPPLER RADAR INDICATED A DEVELOPING TORNADO ABOUT 4
MILES SOUTHWEST OF CHECOTAH MOVING NORTHEAST AT 50 MPH.


WATCH FOR SIGNS OF DEVELOPING STORMS. LARGE HAILSTONES AND UNUSUALLY
LOW SWIRLING CLOUDS ARE MANY TIMES SEEN NEAR A DEVELOPING TORNADO.
STRONG DAMAGING WINDS AND TORNADOES OFTEN PRODUCE A LOUD ROARING
SOUND THAT CAN BE HEARD IN THE VICINITY OF STORMS. FREQUENT AND
DANGEROUS LIGHTNING OCCURS WITH MOST SEVERE THUNDERSTORMS.

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, 6:32 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, 7:26 PM CST	Tornado Warning	TSA	Adair, Cherokee	49 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.