Alert archive / Oklahoma / Tornado Watches in 1998

Tornado Watch 139

March 30, 199843 counties in Oklahoma; 5 counties in Texas

The Storm Prediction Center issued this tornado watch at Mar 30, 1998, 1:00 PM CST for 43 counties in Oklahoma; 5 counties in Texas. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Mar 30, 1998, 1:00 PM CST (19:00 UTC)
Expired: Mar 30, 1998, 8:00 PM CST
In force: 7 hr
Issued by: the Storm Prediction Center

All 48 counties

Atoka County, OK, Bryan County, OK, Carter County, OK, Cherokee County, OK, Choctaw County, OK, Cleveland County, OK, Coal County, OK, Craig County, OK, Creek County, OK, Garvin County, OK, Grady County, OK, Hughes County, OK, Jefferson County, OK, Johnston County, OK, Kay County, OK, Latimer County, OK, Lincoln County, OK, Logan County, OK, Love County, OK, Marshall County, OK, Mayes County, OK, McClain County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Noble County, OK, Nowata County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Osage County, OK, Ottawa County, OK, Pawnee County, OK, Payne County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Rogers County, OK, Seminole County, OK, Stephens County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK, Clay County, TX, Cooke County, TX, Fannin County, TX, Grayson County, TX, Montague County, TX

The radar

The Norman radar (KTLX), 63 km from the middle of the area, began a volume at 19:04 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

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

Issued	Product	Office	Counties	Lasted
Mar 30, 1:00 PM CST	Severe Thunderstorm Warning	OUN	Canadian, Grady	45 min
Mar 30, 1:00 PM CST	Severe Thunderstorm Warning	OUN	Cotton, Jefferson, Stephens	45 min
Mar 30, 1:12 PM CST	Severe Thunderstorm Warning	OUN	Archer, Clay	48 min
Mar 30, 1:16 PM CST	Severe Thunderstorm Warning	OUN	Cleveland, McClain	44 min
Mar 30, 1:16 PM CST	Severe Thunderstorm Warning	OUN	Kingfisher, Logan, Oklahoma	44 min
Mar 30, 1:44 PM CST	Severe Thunderstorm Warning	OUN	Garvin, Grady, McClain, Stephens	46 min
Mar 30, 1:44 PM CST	Severe Thunderstorm Warning	OUN	Jefferson	46 min
Mar 30, 1:58 PM CST	Severe Thunderstorm Warning	OUN	Clay	47 min
Mar 30, 2:21 PM CST	Severe Thunderstorm Warning	TSA	Osage, Pawnee	54 min
Mar 30, 2:29 PM CST	Severe Thunderstorm Warning	OUN	Carter, Garvin, Jefferson, Stephens	46 min
Mar 30, 2:29 PM CST	Severe Thunderstorm Warning	OUN	Cleveland, McClain	46 min
Mar 30, 2:35 PM CST	Severe Thunderstorm Warning	OUN	Kay	40 min
Mar 30, 2:43 PM CST	Severe Thunderstorm Warning	FWD	Montague	47 min
Mar 30, 3:00 PM CST	Severe Thunderstorm Warning	OUN	Pottawatomie	45 min
Mar 30, 3:11 PM CST	Severe Thunderstorm Warning	TSA	Osage	64 min
Mar 30, 3:14 PM CST	Severe Thunderstorm Warning	OUN	Carter, Garvin, McClain, Murray	46 min
Mar 30, 3:14 PM CST	Severe Thunderstorm Warning	OUN	Love	46 min
Mar 30, 3:42 PM CST	Severe Thunderstorm Warning	OUN	Pottawatomie	63 min
Mar 30, 3:43 PM CST	Severe Thunderstorm Warning	FWD	Montague	47 min
Mar 30, 3:58 PM CST	Severe Thunderstorm Warning	OUN	Carter, Johnston, Murray, Pontotoc	62 min
Mar 30, 3:58 PM CST	Severe Thunderstorm Warning	OUN	Love, Marshall	62 min
Mar 30, 3:58 PM CST	Severe Thunderstorm Warning	FWD	Cooke	47 min
Mar 30, 4:04 PM CST	Severe Thunderstorm Warning	TSA	Okfuskee	56 min
Mar 30, 4:15 PM CST	Severe Thunderstorm Warning	TSA	Osage	45 min
Mar 30, 4:46 PM CST	Severe Thunderstorm Warning	OUN	Coal, Hughes	59 min
Mar 30, 4:57 PM CST	Severe Thunderstorm Warning	OUN	Johnston, Marshall	48 min
Mar 30, 5:06 PM CST	Severe Thunderstorm Warning	TSA	McIntosh, Pittsburg	39 min
Mar 30, 5:19 PM CST	Severe Thunderstorm Warning	TSA	Okfuskee, Okmulgee	41 min
Mar 30, 5:36 PM CST	Severe Thunderstorm Warning	OUN	Atoka	54 min
Mar 30, 5:37 PM CST	Severe Thunderstorm Warning	TSA	McIntosh, Pittsburg	53 min
Mar 30, 5:46 PM CST	Severe Thunderstorm Warning	OUN	Coal	29 min
Mar 30, 5:47 PM CST	Severe Thunderstorm Warning	OUN	Bryan	43 min
Mar 30, 5:59 PM CST	Severe Thunderstorm Warning	OUN	Atoka	31 min
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, 6:27 PM CST	Severe Thunderstorm Warning	OUN	Atoka	48 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, 6:53 PM CST	Severe Thunderstorm Warning	TSA	Pittsburg	52 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, 7:58 PM CST	Severe Thunderstorm Warning	TSA	Ottawa	32 min

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 7.0 hours before the alert went out and 59 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: 769 J/kg
Mixed-layer CIN: -178 J/kg
Mixed-layer LCL: 646 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 231 m²/s²
0-3 km storm-relative helicity: 255 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.9

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
Mar 29, 10:45 PM CST	Severe Thunderstorm Watch	SPC	Harper	6 hr
Mar 29, 11:15 PM CST	Tornado Watch	SPC	Alfalfa, Beaver, Beckham, Blaine, Caddo, Comanche and 13 more	6 hr
Mar 30, 3:15 PM CST	Tornado Watch	SPC	Bosque, Brown, Collin, Comanche, Coryell, Dallas and 24 more	5 hr

Nearby

Tornado Watches in Oklahoma, 1998 Tornado Watches in Texas, 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.