Alert archive / Oklahoma / Tornado Warnings in 2001

Tornado Warning 8, NWS Amarillo, TX

May 20, 2001Beaver County, Texas County, Oklahoma

NWS Amarillo, TX issued this tornado warning at May 20, 2001, 11:08 PM CDT for Beaver County, Texas County, Oklahoma. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: May 20, 2001, 11:08 PM CDT (04:08 UTC)
Expired: May 20, 2001, 11:45 PM CDT
In force: 37 min
Issued by: NWS Amarillo, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Beaver County, OK, Texas County, OK

The radar

The Dodge City radar (KDDC), 141 km from the middle of the area, began a volume at 04:08 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.

The nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 4.1 hours before the alert went out and 146 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: 184 J/kg
Mixed-layer CIN: -80 J/kg
Mixed-layer LCL: 1698 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 91 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 
WFUS54 KAMA 210408
TORAMA
OKC007-139-210445-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
1108 PM CDT SUN MAY 20 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN BEAVER COUNTY IN THE OKLAHOMA PANHANDLE
  EASTERN TEXAS COUNTY IN THE OKLAHOMA PANHANDLE

* UNTIL 1145 PM CDT

* AT 1108 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE MOST DANGEROUS
  PORTION OF THE STORM WAS LOCATED 2 MILES NORTHEAST OF ADAMS...OR
  ABOUT 20 MILES SOUTH OF LIBERAL...MOVING NORTHEAST AT 20 MPH.

* SOME LOCATIONS AFFECTED BY THE STORM INCLUDE...
  ADAMS...BAKER...BOYD...BRYANS CORNER...FLORIS...GRAY...HARDESTY...
  HOOKER...TURPIN AND TYRONE

TORNADOES AT NIGHT ARE ESPECIALLY DANGEROUS. DO NOT WAIT UNTIL YOU
SEE OR HEAR THE TORNADO-IT MAY BE TOO LATE. TAKE COVER NOW!

THIS IS AN EXTREMELY DANGEROUS AND LIFE gTHREATENING SITUATION. IF YOU
ARE NEAR THE PATH OF THIS LARGE AND DESTRUCTIVE TORNADO...TAKE COVER
NOW!

LAT...LON 3698 10122 3652 10127 3654 10070 3696 10062

The office that day

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

Issued	Product	Office	Counties	Lasted
May 20, 10:12 PM CDT	Severe Thunderstorm Warning	AMA	Texas	63 min
May 20, 10:22 PM CDT	Severe Thunderstorm Warning	AMA	Cimarron	38 min
May 20, 10:43 PM CDT	Severe Thunderstorm Warning	AMA	Beaver	62 min
May 20, 11:45 PM CDT	Severe Thunderstorm Warning	AMA	Beaver	45 min

Nearby

Tornado Warnings in Oklahoma, 2001 Every tornado warning in 2001 Tornadoes 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.