Alert archive / Oklahoma / Tornado Watches in 1998

Tornado Watch 413

May 24, 199831 counties in Oklahoma

The Storm Prediction Center issued this tornado watch at May 24, 1998, 8:15 PM CDT for 31 counties in Oklahoma. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: May 24, 1998, 8:15 PM CDT (01:15 UTC)
Expired: May 25, 1998, 3:00 AM CDT
In force: 7 hr
Issued by: the Storm Prediction Center

All 31 counties

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, Lincoln 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, Roger Mills County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK, Woods County, OK, Woodward County, OK

The radar

The Tulsa radar (KINX), 111 km from the middle of the area, began a volume at 01:16 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

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

Issued	Product	Office	Counties	Lasted
May 24, 8:29 PM CDT	Tornado Warning	OUN	Grant	31 min
May 24, 8:42 PM CDT	Tornado Warning	OUN	Kay	33 min
May 24, 8:53 PM CDT	Tornado Warning	TSA	Osage	52 min
May 24, 8:59 PM CDT	Tornado Warning	OUN	Garfield, Grant, Kay, Noble	31 min
May 24, 9:12 PM CDT	Severe Thunderstorm Warning	TSA	Nowata	63 min
May 24, 9:14 PM CDT	Tornado Warning	OUN	Kay	31 min
May 24, 9:21 PM CDT	Tornado Warning	OUN	Grant	24 min
May 24, 9:30 PM CDT	Tornado Warning	OUN	Grant	30 min
May 24, 9:34 PM CDT	Tornado Warning	TSA	Nowata	41 min
May 24, 9:40 PM CDT	Tornado Warning	TSA	Osage	65 min
May 24, 9:44 PM CDT	Tornado Warning	OUN	Grant	46 min
May 24, 9:45 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa	45 min
May 24, 9:47 PM CDT	Severe Thunderstorm Warning	OUN	Kay	58 min
May 24, 9:53 PM CDT	Severe Thunderstorm Warning	TSA	Craig	37 min
May 24, 10:01 PM CDT	Flash Flood Warning	OUN	Grant, Kay	119 min
May 24, 10:08 PM CDT	Tornado Warning	OUN	Woods	37 min
May 24, 10:15 PM CDT	Tornado Warning	OUN	Alfalfa	30 min
May 24, 10:18 PM CDT	Severe Thunderstorm Warning	OUN	Woodward	42 min
May 24, 10:27 PM CDT	Tornado Warning	OUN	Kay	48 min
May 24, 10:31 PM CDT	Tornado Warning	OUN	Garfield, Grant	44 min
May 24, 10:37 PM CDT	Tornado Warning	OUN	Woods, Woodward	38 min
May 24, 10:43 PM CDT	Severe Thunderstorm Warning	OUN	Noble	47 min
May 24, 10:43 PM CDT	Tornado Warning	TSA	Osage	62 min
May 24, 10:52 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woods	38 min
May 24, 10:57 PM CDT	Severe Thunderstorm Warning	TSA	Craig	48 min
May 24, 11:05 PM CDT	Flash Flood Warning	OUN	Alfalfa	3 hr
May 24, 11:10 PM CDT	Tornado Warning	OUN	Alfalfa, Woods	35 min
May 24, 11:12 PM CDT	Severe Thunderstorm Warning	OUN	Kay	63 min
May 24, 11:14 PM CDT	Tornado Warning	OUN	Garfield	46 min
May 24, 11:17 PM CDT	Severe Thunderstorm Warning	OUN	Grant	58 min
May 24, 11:25 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Washington	50 min
May 24, 11:35 PM CDT	Tornado Warning	OUN	Noble	40 min
May 24, 11:37 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woods, Woodward	53 min
May 24, 11:46 PM CDT	Severe Thunderstorm Warning	TSA	Osage	44 min
May 24, 11:48 PM CDT	Tornado Warning	OUN	Alfalfa, Garfield, Major	27 min
May 24, 11:59 PM CDT	Flash Flood Warning	OUN	Alfalfa, Grant, Kay	3 hr
May 24, 11:59 PM CDT	Flash Flood Warning	OUN	Woods	3 hr
May 25, 12:10 AM CDT	Severe Thunderstorm Warning	OUN	Grant	50 min
May 25, 12:13 AM CDT	Tornado Warning	OUN	Garfield	47 min
May 25, 12:13 AM CDT	Flash Flood Warning	TSA	Osage	2 hr
May 25, 12:19 AM CDT	Severe Thunderstorm Warning	TSA	Craig	41 min
May 25, 12:30 AM CDT	Severe Thunderstorm Warning	OUN	Harper	30 min
May 25, 12:32 AM CDT	Severe Thunderstorm Warning	TSA	Osage	43 min
May 25, 12:37 AM CDT	Severe Thunderstorm Warning	OUN	Alfalfa	23 min
May 25, 12:43 AM CDT	Severe Thunderstorm Warning	TSA	Delaware, Ottawa	47 min
May 25, 12:44 AM CDT	Severe Thunderstorm Warning	OUN	Harper, Woods, Woodward	31 min
May 25, 1:00 AM CDT	Severe Thunderstorm Warning	OUN	Noble	45 min
May 25, 1:00 AM CDT	Severe Thunderstorm Warning	OUN	Alfalfa	20 min
May 25, 1:12 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Washington	48 min
May 25, 1:14 AM CDT	Severe Thunderstorm Warning	OUN	Woods, Woodward	46 min
May 25, 1:31 AM CDT	Severe Thunderstorm Warning	TSA	Nowata, Rogers	44 min
May 25, 1:36 AM CDT	Severe Thunderstorm Warning	OUN	Grant	39 min
May 25, 1:38 AM CDT	Tornado Warning	OUN	Alfalfa, Woods	37 min
May 25, 2:12 AM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Grant	48 min
May 25, 2:25 AM CDT	Severe Thunderstorm Warning	TSA	Mayes	50 min
May 25, 2:45 AM CDT	Severe Thunderstorm Warning	OUN	Garfield	60 min
May 25, 2:48 AM CDT	Severe Thunderstorm Warning	OUN	Dewey	32 min
May 25, 2:54 AM CDT	Severe Thunderstorm Warning	TSA	Delaware	36 min
May 25, 2:55 AM CDT	Flash Flood Warning	OUN	Alfalfa, Grant, Kay	2 hr
May 25, 3:00 AM CDT	Severe Thunderstorm Warning	OUN	Grant	45 min

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 1.3 hours before the alert went out and 151 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: 3427 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 1455 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 75 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 16.4

Open this sounding in Storm Lab

The text

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

809 
WWUS9 KMKC 250052
SEL3  
MKC WW 250052
OKZ000-250800-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 413
STORM PREDICTION CENTER NORMAN OK
752 PM CDT SUN MAY 24 1998

THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

   NORTHERN OKLAHOMA                           

EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 815 PM UNTIL
300 AM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 150 STATUTE MILES EAST AND WEST
OF A LINE FROM 25 MILES NORTHWEST OF PONCA CITY OKLAHOMA TO 65
MILES SOUTHEAST OF ENID OKLAHOMA.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. 
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...  CONTINUE...WW 407...WW 408...WW
409...WW 410...WW 411...WW 412...

DISCUSSION...SRN K SUPERCELLS LIKELY TO BEGIN DEVELOPING/MOVING
SEWD LATER THIS EVENING AS 25 KT SSE LOW-LEVEL FLOW CONTINUES TO
ADVECT UPPER 60S DEWPOINTS INTO REGION.  COUPLED WITH HIGH SURFACE
TEMPERATURES...MODERATE /40 KT/ WLY FLOW ALOFT AND SEVERAL E/W
BOUNDARY TO FOCUS DEVELOPMENT...ACTIVITY SHOULD REMAIN SEVERE
THROUGH THE EVENING.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. 
MEAN STORM MOTION VECTOR 26035.


...CORFIDI

365,0944 354,0942 354,0994 365,1000

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 25, 12:30 AM CDT	Tornado Watch	SPC	Adair	6 hr
May 25, 2:45 AM CDT	Severe Thunderstorm Watch	SPC	Adair, Beckham, Blaine, Caddo, Canadian, Cherokee and 47 more	6 hr
May 25, 4:30 PM CDT	Tornado Watch	SPC	Carter, Comanche, Cotton, Garvin, Jefferson, Love and 3 more	6 hr

Nearby

Tornado Watches in Oklahoma, 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.