Alert archive / Texas / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 305

May 27, 200124 counties in Oklahoma; 26 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at May 27, 2001, 10:45 PM CDT for 24 counties in Oklahoma; 26 counties in Texas. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: May 27, 2001, 10:45 PM CDT (03:45 UTC)
Expired: May 28, 2001, 4:00 AM CDT
In force: 5 hr
Issued by: the Storm Prediction Center

All 50 counties

Beckham County, OK, Bryan County, OK, Caddo County, OK, Carter County, OK, Cleveland County, OK, Comanche County, OK, Cotton County, OK, Garvin County, OK, Grady County, OK, Greer County, OK, Jackson County, OK, Jefferson County, OK, Johnston County, OK, Kiowa County, OK, Love County, OK, Marshall County, OK, McClain County, OK, Murray County, OK, Pontotoc County, OK, Pottawatomie County, OK, Seminole County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK, Archer County, TX, Clay County, TX, Collin County, TX, Cooke County, TX, Dallas County, TX, Denton County, TX, Ellis County, TX, Fannin County, TX, Grayson County, TX, Hood County, TX, Hunt County, TX, Jack County, TX, Johnson County, TX, Kaufman County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Rains County, TX, Rockwall County, TX, Smith County, TX, Tarrant County, TX, Van Zandt County, TX, Wichita County, TX, Wilbarger County, TX, Wise County, TX, Young County, TX

The radar

The Norman radar (KTLX), 130 km from the middle of the area, began a volume at 03:48 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

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

Issued	Product	Office	Counties	Lasted
May 27, 10:48 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Murray	42 min
May 27, 10:48 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Grady, McClain	42 min
May 27, 10:48 PM CDT	Severe Thunderstorm Warning	OUN	Stephens	42 min
May 27, 10:57 PM CDT	Severe Thunderstorm Warning	OUN	Cotton	63 min
May 27, 11:01 PM CDT	Severe Thunderstorm Warning	OUN	Kiowa	29 min
May 27, 11:10 PM CDT	Tornado Warning	OUN	Carter	35 min
May 27, 11:13 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson	47 min
May 27, 11:23 PM CDT	Severe Thunderstorm Warning	OUN	Wichita, Wilbarger	67 min
May 27, 11:29 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Love, Marshall	61 min
May 27, 11:29 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, Stephens	61 min
May 27, 11:29 PM CDT	Severe Thunderstorm Warning	OUN	Johnston, Murray	61 min
May 27, 11:46 PM CDT	Severe Thunderstorm Warning	OUN	Tillman	29 min
May 27, 11:46 PM CDT	Severe Thunderstorm Warning	FWD	Montague	59 min
May 27, 11:53 PM CDT	Severe Thunderstorm Warning	OUN	Bryan	37 min
May 27, 11:54 PM CDT	Severe Thunderstorm Warning	FWD	Cooke	66 min
May 28, 12:00 AM CDT	Severe Thunderstorm Warning	OUN	Jefferson	30 min
May 28, 12:01 AM CDT	Severe Thunderstorm Warning	FWD	Grayson	59 min
May 28, 12:01 AM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor	59 min
May 28, 12:01 AM CDT	Severe Thunderstorm Warning	OUN	Clay	59 min
May 28, 12:21 AM CDT	Severe Thunderstorm Warning	OUN	Bryan, Johnston, Marshall	54 min
May 28, 12:29 AM CDT	Severe Thunderstorm Warning	OUN	Wichita	46 min
May 28, 12:34 AM CDT	Severe Thunderstorm Warning	FWD	Fannin	56 min
May 28, 12:48 AM CDT	Severe Thunderstorm Warning	FWD	Collin	57 min
May 28, 12:53 AM CDT	Severe Thunderstorm Warning	FWD	Jack	52 min
May 28, 12:59 AM CDT	Severe Thunderstorm Warning	FWD	Denton, Wise	46 min
May 28, 12:59 AM CDT	Severe Thunderstorm Warning	OUN	Archer, Clay	46 min
May 28, 1:07 AM CDT	Severe Thunderstorm Warning	FWD	Hunt	53 min
May 28, 1:23 AM CDT	Severe Thunderstorm Warning	FWD	Tarrant	67 min
May 28, 1:29 AM CDT	Severe Thunderstorm Warning	FWD	Parker	46 min
May 28, 1:37 AM CDT	Severe Thunderstorm Warning	FWD	Dallas	53 min
May 28, 1:48 AM CDT	Severe Thunderstorm Warning	FWD	Kaufman, Rains, Van Zandt	57 min
May 28, 2:17 AM CDT	Severe Thunderstorm Warning	OUN	Washita	43 min
May 28, 2:23 AM CDT	Severe Thunderstorm Warning	FWD	Ellis	67 min

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 3.8 hours before the alert went out and 116 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: 2894 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1394 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: 89 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.6

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, 7:00 PM CDT	Severe Thunderstorm Watch	SPC	Beaver, Beckham, Custer, Dewey, Ellis, Greer and 8 more	4 hr
May 27, 9:00 PM CDT	Severe Thunderstorm Watch	SPC	Bryan, Caddo, Canadian, Carter, Cleveland, Coal and 17 more	2 hr
May 27, 11:00 PM CDT	Severe Thunderstorm Watch	SPC	Atoka, Choctaw, Coal, Haskell, Hughes, Latimer and 11 more	5 hr
May 28, 1:30 AM CDT	Severe Thunderstorm Watch	SPC	Anderson, Angelina, Bosque, Camp, Cass, Cherokee and 46 more	5 hr

Nearby

Severe Thunderstorm Watches in Texas, 2001 Severe Thunderstorm Watches in Oklahoma, 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.