Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 21, NWS Amarillo, TX

April 6, 2001Beaver County, Oklahoma; Ochiltree County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Apr 6, 2001, 5:54 PM CDT for Beaver County, Oklahoma; Ochiltree County, Texas. It was in force for 66 min. 9 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Apr 6, 2001, 5:54 PM CDT (22:54 UTC)
Expired: Apr 6, 2001, 7:00 PM CDT
In force: 66 min
Issued by: NWS Amarillo, TX
Area: Whole counties

Counties Beaver County, OK, Ochiltree County, TX

The radar

The Dodge City radar (KDDC), 151 km from the middle of the area, began a volume at 22:53 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.

What was reported inside it

Time	Report	Where	Remark
Apr 6, 6:00 PM CDT	Thunderstorm Wind 61 E	Perryton, TX	Several roofs were reported blown off...cattle trucks were turned over...and power lines were blown down.
Apr 6, 6:00 PM CDT	Tornado F1	Perryton, TX	A tornado touched down southwest of Perryton and then moved northeast clipping the southern sections of the city. The tornado then lifted northeast of the city near the airport. Damage occurred to homes and businesses along the tornado's path. The path leng
Apr 6, 6:05 PM CDT	Thunderstorm Wind 84 E	Perryton, TX	Two hangers were destroyed at the airport...lots of roofs were damaged...and many power poles were reported down.
Apr 6, 6:14 PM CDT	Thunderstorm Wind 52 E	Perryton, TX
Apr 6, 6:14 PM CDT	Hail 0.75	Perryton, TX
Apr 6, 6:16 PM CDT	Hail 0.88	Perryton, TX
Apr 6, 6:22 PM CDT	Thunderstorm Wind 61 E	Turpin, OK	Thirty or more power poles were reported blown down.
Apr 6, 6:49 PM CDT	Thunderstorm Wind 65 E	Slapout, OK	Report was relayed by the Storm Prediction Center in Norman Oklahoma.
Apr 6, 6:50 PM CDT	Thunderstorm Wind 50 M	Slapout, OK

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 6, 4:00 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Dodge City, (KDDC), launched 12:00Z, 10.9 hours before the alert went out and 155 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2143 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 370 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KAMA 062254
SVRAMA
OKC007-TXC129-179-357-393-070000-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
554 PM CDT FRI APR 6 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BEAVER COUNTY IN THE OKLAHOMA PANHANDLE
  GRAY COUNTY IN THE TEXAS PANHANDLE
  OCHILTREE COUNTY IN THE TEXAS PANHANDLE
  DONLEY COUNTY IN THE TEXAS PANHANDLE
  ROBERTS COUNTY IN THE TEXAS PANHANDLE

* UNTIL 700 PM CDT

* AT 554 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 11 MILES NORTHWEST OF TURPIN TO
  15 MILES SOUTHWEST OF CLARENDON...MOVING EAST AT 50 MPH.

* SOME LOCATIONS AFFECTED BY THESE STORMS INCLUDE...
  CLARENDON...MIAMI...PAMPA...PERRYTON...BALKO...BOYD...BRYANS
  CORNER...FLORIS...GRAY...TURPIN...ALANREED...CODMAN...FARNSWORTH...
  GREENBELT LAKE...HEDLEY...HOWARDWICK...KINGSMILL...LAKE
  MCCLELLAN...LEFORS...LELIA LAKE...MCLEAN...WAKA AND WOLF CREEK PARK

DESTRUCTIVE WINDS CAN BE EXPECTED. IF YOU CANNOT GET UNDERGROUND...GO
TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID
WINDOWS!

A TORNADO WATCH IS ALSO IN EFF<ECT. TORNADOES CAN DEVELOP SUDDENLY
FROM SEVERE THUNDERSTORMS.

The office that day

Everything else NWS Amarillo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 6, 4:44 PM CDT	Severe Thunderstorm Warning	AMA	Cimarron, Texas	46 min
Apr 6, 5:13 PM CDT	Severe Thunderstorm Warning	AMA	Texas	62 min
Apr 6, 4:16 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hartley, Sherman	29 min
Apr 6, 4:27 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham, Potter, Randall	48 min
Apr 6, 4:44 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hartley, Moore	46 min
Apr 6, 5:13 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Hutchinson, Moore, Potter, Randall	62 min
Apr 6, 5:54 PM CDT	Severe Thunderstorm Warning	AMA	Donley, Gray	66 min
Apr 6, 5:54 PM CDT	Severe Thunderstorm Warning	AMA	Roberts	66 min
Apr 6, 6:19 PM CDT	Severe Thunderstorm Warning	AMA	Hemphill, Lipscomb, Wheeler	56 min
Apr 6, 6:19 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth	56 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2001 Severe Thunderstorm Warnings in Texas, 2001 Every severe thunderstorm warning 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.