Alert archive / Oklahoma / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 299

May 27, 20014 states

The Storm Prediction Center issued this severe thunderstorm watch at May 27, 2001, 1:45 PM CDT for 4 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: May 27, 2001, 1:45 PM CDT (18:45 UTC)
Expired: May 27, 2001, 7:00 PM CDT
In force: 5 hr
Issued by: the Storm Prediction Center

All 42 counties

Benton County, AR, Washington County, AR, Barber County, KS, Chautauqua County, KS, Cherokee County, KS, Cowley County, KS, Crawford County, KS, Elk County, KS, Harper County, KS, Kingman County, KS, Labette County, KS, Montgomery County, KS, Neosho County, KS, Pratt County, KS, Sedgwick County, KS, Sumner County, KS, Wilson County, KS, Barton County, MO, Jasper County, MO, McDonald County, MO, Newton County, MO, Adair County, OK, Alfalfa County, OK, Cherokee County, OK, Craig County, OK, Delaware County, OK, Garfield County, OK, Grant County, OK, Kay 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

The radar

The Wichita radar (KICT), 82 km from the middle of the area, began a volume at 18:45 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

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

Issued	Product	Office	Counties	Lasted
May 27, 2:10 PM CDT	Severe Thunderstorm Warning	ICT	Chautauqua, Cowley	50 min
May 27, 2:16 PM CDT	Tornado Warning	ICT	Sumner	44 min
May 27, 2:36 PM CDT	Severe Thunderstorm Warning	OUN	Grant, Kay	54 min
May 27, 2:54 PM CDT	Severe Thunderstorm Warning	ICT	Sedgwick	66 min
May 27, 3:00 PM CDT	Severe Thunderstorm Warning	ICT	Sumner	45 min
May 27, 3:04 PM CDT	Severe Thunderstorm Warning	TSA	Osage	71 min
May 27, 4:05 PM CDT	Severe Thunderstorm Warning	ICT	Harvey, Sedgwick	55 min
May 27, 4:06 PM CDT	Severe Thunderstorm Warning	TSA	Osage	54 min
May 27, 4:34 PM CDT	Severe Thunderstorm Warning	TSA	Tulsa	56 min
May 27, 5:12 PM CDT	Severe Thunderstorm Warning	TSA	Muskogee, Wagoner	63 min
May 27, 5:16 PM CDT	Severe Thunderstorm Warning	ICT	Cowley	59 min
May 27, 5:27 PM CDT	Severe Thunderstorm Warning	TSA	Tulsa	18 min
May 27, 5:39 PM CDT	Severe Thunderstorm Warning	ICT	Sumner	51 min
May 27, 5:42 PM CDT	Severe Thunderstorm Warning	ICT	Kingman, Sedgwick	63 min
May 27, 5:59 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Woods	46 min
May 27, 6:08 PM CDT	Severe Thunderstorm Warning	DDC	Pratt	67 min
May 27, 6:10 PM CDT	Severe Thunderstorm Warning	ICT	Cowley	65 min
May 27, 6:21 PM CDT	Tornado Warning	ICT	Kingman	54 min
May 27, 6:36 PM CDT	Severe Thunderstorm Warning	DDC	Barber	39 min
May 27, 6:39 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa	51 min
May 27, 6:43 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woods	47 min
May 27, 6:47 PM CDT	Severe Thunderstorm Warning	ICT	Sedgwick, Sumner	58 min
May 27, 6:55 PM CDT	Tornado Warning	OUN	Alfalfa	35 min

The nearest sounding before it

Lamont, OK (KLMN), launched 12:00Z, 6.8 hours before the alert went out and 66 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: 776 J/kg
Mixed-layer CIN: -64 J/kg
Mixed-layer LCL: 1272 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 112 m²/s²
Significant tornado parameter: 0.0
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
May 27, 5:00 PM CDT	Severe Thunderstorm Watch	SPC	Arkansas, Cleburne, Cleveland, Crittenden, Cross, Desha and 12 more	5 hr
May 27, 3:30 PM CDT	Severe Thunderstorm Watch	SPC	Clark, Comanche, Edwards, Finney, Ford, Gove and 21 more	6 hr
May 27, 5:45 PM CDT	Severe Thunderstorm Watch	SPC	Barber, Cowley, Harper, Kingman, Pratt, Reno and 3 more	5 hr
May 26, 11:00 PM CDT	Severe Thunderstorm Watch	SPC	Beckham, Harmon, Roger Mills	6 hr

Nearby

Severe Thunderstorm Watches in Oklahoma, 2001 Severe Thunderstorm Watches in Kansas, 2001 Severe Thunderstorm Watches in Missouri, 2001 Every severe thunderstorm 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.