Alert archive / Oklahoma / Tornado Watches in 2001

Tornado Watch 720

September 7, 200114 counties in Kansas; 9 counties in Missouri; 39 counties in Oklahoma

The Storm Prediction Center issued this tornado watch at Sep 7, 2001, 7:00 PM CDT for 14 counties in Kansas; 9 counties in Missouri; 39 counties in Oklahoma. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Sep 7, 2001, 7:00 PM CDT (00:00 UTC)
Expired: Sep 8, 2001, 12:00 AM CDT
In force: 5 hr
Issued by: the Storm Prediction Center

All 62 counties

Allen County, KS, Anderson County, KS, Bourbon County, KS, Chautauqua County, KS, Cherokee County, KS, Coffey County, KS, Crawford County, KS, Elk County, KS, Labette County, KS, Linn County, KS, Montgomery County, KS, Neosho County, KS, Wilson County, KS, Woodson County, KS, Barton County, MO, Cedar County, MO, Dade County, MO, Hickory County, MO, Jasper County, MO, McDonald County, MO, Newton County, MO, St. Clair County, MO, Vernon County, MO, Atoka County, OK, Carter County, OK, Cherokee County, OK, Cleveland County, OK, Coal County, OK, Comanche County, OK, Cotton County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Garvin County, OK, Grady County, OK, Hughes County, OK, Johnston County, OK, Lincoln County, OK, Logan 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

The radar

The Norman radar (KTLX), 84 km from the middle of the area, began a volume at 00:05 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

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

Issued	Product	Office	Counties	Lasted
Sep 7, 7:12 PM CDT	Severe Thunderstorm Warning	ICT	Allen, Neosho	63 min
Sep 7, 7:19 PM CDT	Severe Thunderstorm Warning	OUN	Payne	41 min
Sep 7, 7:23 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Oklahoma	67 min
Sep 7, 7:26 PM CDT	Severe Thunderstorm Warning	ICT	Montgomery	64 min
Sep 7, 7:27 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Grady, McClain	63 min
Sep 7, 7:27 PM CDT	Severe Thunderstorm Warning	TSA	Creek	63 min
Sep 7, 7:30 PM CDT	Severe Thunderstorm Warning	TOP	Anderson, Douglas, Franklin, Osage	30 min
Sep 7, 7:38 PM CDT	Severe Thunderstorm Warning	EAX	Linn	52 min
Sep 7, 7:38 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Washington	52 min
Sep 7, 7:38 PM CDT	Severe Thunderstorm Warning	TSA	Pawnee	52 min
Sep 7, 7:43 PM CDT	Severe Thunderstorm Warning	SGF	Bourbon	77 min
Sep 7, 7:51 PM CDT	Severe Thunderstorm Warning	ICT	Labette	69 min
Sep 7, 7:58 PM CDT	Severe Thunderstorm Warning	OUN	Pottawatomie	47 min
Sep 7, 7:59 PM CDT	Severe Thunderstorm Warning	TSA	Nowata	61 min
Sep 7, 8:03 PM CDT	Severe Thunderstorm Warning	SGF	Crawford	72 min
Sep 7, 8:03 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Tulsa	57 min
Sep 7, 8:03 PM CDT	Severe Thunderstorm Warning	TSA	Rogers	57 min
Sep 7, 8:06 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, Stephens	39 min
Sep 7, 8:10 PM CDT	Severe Thunderstorm Warning	SGF	Vernon	80 min
Sep 7, 8:10 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	50 min
Sep 7, 8:22 PM CDT	Severe Thunderstorm Warning	TSA	Craig	38 min
Sep 7, 8:25 PM CDT	Severe Thunderstorm Warning	ICT	Montgomery	65 min
Sep 7, 8:26 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, McClain	34 min
Sep 7, 8:30 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln	30 min
Sep 7, 8:31 PM CDT	Severe Thunderstorm Warning	SGF	Cherokee	74 min
Sep 7, 8:39 PM CDT	Severe Thunderstorm Warning	TSA	Okmulgee, Wagoner	51 min
Sep 7, 8:42 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Stephens	48 min
Sep 7, 8:44 PM CDT	Severe Thunderstorm Warning	OUN	Pottawatomie, Seminole	61 min
Sep 7, 8:55 PM CDT	Severe Thunderstorm Warning	TSA	Tulsa	35 min
Sep 7, 8:57 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Mayes, Rogers	63 min
Sep 7, 8:57 PM CDT	Severe Thunderstorm Warning	TSA	Ottawa	63 min
Sep 7, 8:57 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	33 min
Sep 7, 9:00 PM CDT	Severe Thunderstorm Warning	ICT	Labette	30 min
Sep 7, 9:00 PM CDT	Severe Thunderstorm Warning	OUN	McClain	30 min
Sep 7, 9:05 PM CDT	Severe Thunderstorm Warning	SGF	Barton	70 min
Sep 7, 9:10 PM CDT	Severe Thunderstorm Warning	OUN	Murray, Pontotoc	55 min
Sep 7, 9:13 PM CDT	Severe Thunderstorm Warning	SGF	Crawford	17 min
Sep 7, 9:13 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee	62 min
Sep 7, 9:13 PM CDT	Severe Thunderstorm Warning	TSA	Wagoner	62 min
Sep 7, 9:16 PM CDT	Severe Thunderstorm Warning	SGF	Jasper	74 min
Sep 7, 9:21 PM CDT	Severe Thunderstorm Warning	SGF	Cedar, St. Clair	54 min
Sep 7, 9:28 PM CDT	Severe Thunderstorm Warning	OUN	Hughes	47 min
Sep 7, 9:39 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	66 min
Sep 7, 9:40 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Jefferson, Love	50 min
Sep 7, 9:40 PM CDT	Severe Thunderstorm Warning	TSA	Delaware	65 min
Sep 7, 9:41 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee	64 min
Sep 7, 9:44 PM CDT	Severe Thunderstorm Warning	OUN	Seminole	31 min
Sep 7, 9:50 PM CDT	Severe Thunderstorm Warning	SGF	McDonald, Newton	55 min
Sep 7, 9:52 PM CDT	Severe Thunderstorm Warning	SGF	Cherokee	38 min
Sep 7, 9:58 PM CDT	Severe Thunderstorm Warning	SGF	Hickory, Polk	62 min
Sep 7, 10:00 PM CDT	Severe Thunderstorm Warning	OUN	Murray, Pontotoc	50 min
Sep 7, 10:04 PM CDT	Severe Thunderstorm Warning	SGF	Dade, Lawrence	71 min
Sep 7, 10:11 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee, Okmulgee	64 min
Sep 7, 10:30 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	60 min
Sep 7, 10:46 PM CDT	Severe Thunderstorm Warning	OUN	Coal	44 min
Sep 7, 10:54 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Sequoyah, Wagoner	66 min
Sep 7, 10:59 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	46 min
Sep 7, 11:13 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh	47 min

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 0.0 hours before the alert went out and 101 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: 3154 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 1262 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 156 m²/s²
0-3 km storm-relative helicity: 166 m²/s²
Significant tornado parameter: 2.3
Supercell composite: 17.3

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
Sep 7, 8:45 PM CDT	Severe Thunderstorm Watch	SPC	Adair, Audrain, Bates, Benton, Boone, Callaway and 27 more	5 hr
Sep 7, 10:30 PM CDT	Severe Thunderstorm Watch	SPC	Barry, Camden, Christian, Crawford, Dade, Dallas and 17 more	6 hr
Sep 8, 1:15 AM CDT	Severe Thunderstorm Watch	SPC	McCurtain	5 hr
Sep 8, 3:00 PM CDT	Severe Thunderstorm Watch	SPC	Adair, Atoka, Bryan, Cherokee, Choctaw, Coal and 14 more	6 hr
Sep 8, 5:45 PM CDT	Severe Thunderstorm Watch	SPC	Carter, Jefferson, Love, Marshall	6 hr

Nearby

Tornado Watches in Oklahoma, 2001 Tornado Watches in Kansas, 2001 Tornado Watches in Missouri, 2001 Every tornado watch in 2001

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.