Alert archive / Oklahoma / Tornado Watches in 1998

Tornado Watch 293

May 6, 199822 counties in Kansas; 29 counties in Oklahoma

The Storm Prediction Center issued this tornado watch at May 6, 1998, 3:00 PM CDT for 22 counties in Kansas; 29 counties in Oklahoma. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: May 6, 1998, 3:00 PM CDT (20:00 UTC)
Expired: May 6, 1998, 9:00 PM CDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 51 counties

Allen County, KS, Barber County, KS, Bourbon County, KS, Butler County, KS, Chautauqua County, KS, Cherokee County, KS, Clark County, KS, Comanche County, KS, Cowley County, KS, Crawford County, KS, Elk County, KS, Ford County, KS, Harper County, KS, Kingman County, KS, Kiowa County, KS, Labette County, KS, Montgomery County, KS, Neosho County, KS, Pratt County, KS, Sedgwick County, KS, Sumner County, KS, Wilson County, KS, Adair County, OK, Alfalfa County, OK, Blaine County, OK, Cherokee County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Grant County, OK, Harper County, OK, Kay County, OK, Kingfisher County, OK, Logan County, OK, Major County, OK, Mayes County, OK, Noble County, OK, Nowata County, OK, Osage County, OK, Ottawa County, OK, Pawnee County, OK, Payne County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK, Woods County, OK, Woodward County, OK

The radar

The Vance AFB radar (KVNX), 42 km from the middle of the area, began a volume at 20:00 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.

Warnings issued inside it

30 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
May 6, 3:58 PM CDT	Severe Thunderstorm Warning	OUN	Woods	47 min
May 6, 4:36 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Noble	39 min
May 6, 4:56 PM CDT	Flash Flood Warning	SGF	Cherokee	6 hr
May 6, 4:57 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Major	48 min
May 6, 5:07 PM CDT	Severe Thunderstorm Warning	ICT	Montgomery	43 min
May 6, 5:07 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okmulgee	53 min
May 6, 5:12 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Noble	33 min
May 6, 5:25 PM CDT	Tornado Warning	OUN	Blaine, Dewey	35 min
May 6, 5:49 PM CDT	Severe Thunderstorm Warning	TSA	Wagoner	56 min
May 6, 5:55 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Tulsa	65 min
May 6, 6:00 PM CDT	Tornado Warning	OUN	Blaine	30 min
May 6, 6:11 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Washington	64 min
May 6, 6:20 PM CDT	Tornado Warning	TSA	Nowata, Washington	40 min
May 6, 6:26 PM CDT	Severe Thunderstorm Warning	OUN	Payne	19 min
May 6, 6:34 PM CDT	Severe Thunderstorm Warning	OUN	Kingfisher	41 min
May 6, 6:36 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee	54 min
May 6, 6:38 PM CDT	Severe Thunderstorm Warning	TSA	Craig	52 min
May 6, 6:42 PM CDT	Severe Thunderstorm Warning	OUN	Payne	33 min
May 6, 6:43 PM CDT	Severe Thunderstorm Warning	TSA	Mayes, Rogers, Wagoner	77 min
May 6, 6:54 PM CDT	Flash Flood Warning	TSA	Tulsa	3 hr
May 6, 6:59 PM CDT	Severe Thunderstorm Warning	TSA	Creek	61 min
May 6, 7:13 PM CDT	Tornado Warning	DDC	Ford	32 min
May 6, 7:21 PM CDT	Severe Thunderstorm Warning	TSA	Delaware	54 min
May 6, 7:32 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee	58 min
May 6, 7:45 PM CDT	Severe Thunderstorm Warning	DDC	Ford	30 min
May 6, 7:46 PM CDT	Tornado Warning	TSA	Adair	29 min
May 6, 8:05 PM CDT	Tornado Warning	TSA	Adair	25 min
May 6, 8:16 PM CDT	Severe Thunderstorm Warning	DDC	Ford	29 min
May 6, 8:28 PM CDT	Severe Thunderstorm Warning	DDC	Clark, Meade	62 min
May 6, 8:58 PM CDT	Severe Thunderstorm Warning	DDC	Comanche	62 min

The nearest sounding before it

Lamont, OK (KLMN), launched 12:00Z, 8.0 hours before the alert went out and 54 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: 201 J/kg
Mixed-layer CIN: -145 J/kg
Mixed-layer LCL: 461 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: 110 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 5, 7:00 PM CDT	Severe Thunderstorm Watch	SPC	Cheyenne, Finney, Grant, Greeley, Hamilton, Haskell and 12 more	6 hr
May 6, 4:00 PM CDT	Severe Thunderstorm Watch	SPC	Finney, Gove, Grant, Gray, Greeley, Hamilton and 12 more	6 hr

Nearby

Tornado Watches in Oklahoma, 1998 Tornado Watches in Kansas, 1998 Every tornado watch 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.