Alert archive / Texas / Tornado Warnings in 1998

Tornado Warning 4, NWS Amarillo, TX

October 30, 1998Randall County, Texas

NWS Amarillo, TX issued this tornado warning at Oct 30, 1998, 8:00 PM CST for Randall County, Texas. It was in force for 60 min. 1 report 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: Oct 30, 1998, 8:00 PM CST (02:00 UTC)
Expired: Oct 30, 1998, 9:00 PM CST
In force: 60 min
Issued by: NWS Amarillo, TX
Area: Whole counties

County Randall County, TX

The radar

The Amarillo radar (KAMA), 34 km from the middle of the area, began a volume at 02:02 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
Oct 30, 8:06 PM CST	Hail 0.75	Canyon, TX

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
Oct 30, 3:15 PM CST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 2.0 hours before the alert went out and 34 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: 45 J/kg
Mixed-layer CIN: -123 J/kg
Mixed-layer LCL: 744 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 231 m²/s²
0-3 km storm-relative helicity: 354 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KAMA 310201
TORAMA
TXC381-310300-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
800 PM CST FRI OCT 30 1998

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A

* TORNADO WARNING FOR SOUTHERN RANDALL COUNTY IN THE TEXAS
  PANHANDLE.

* UNTIL 900 PM CST

* AT 756 PM CST... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A TORNADO 12 MILES SOUTH OF CANYON MOVING NORTHEAST AT 20 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR PALO DURO CANYON BETWEEN
  815 PM AND 830 PM.

GO TO A STORM CELLAR OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR!

SLATTERY

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 30, 6:30 PM CST	Severe Thunderstorm Warning	AMA	Deaf Smith	60 min
Oct 30, 7:44 PM CST	Severe Thunderstorm Warning	AMA	Randall	61 min
Oct 30, 9:24 PM CST	Flash Flood Warning	AMA	Deaf Smith, Oldham, Randall	4 hr
Oct 30, 9:24 PM CST	Flash Flood Warning	AMA	Armstrong, Carson, Potter	4 hr
Oct 31, 1:31 AM CST	Flash Flood Warning	AMA	Deaf Smith, Oldham, Randall	4 hr
Oct 31, 1:31 AM CST	Flash Flood Warning	AMA	Armstrong, Carson, Potter	4 hr
Oct 31, 5:35 AM CST	Flash Flood Warning	AMA	Deaf Smith, Oldham, Randall	6 hr
Oct 31, 5:35 AM CST	Flash Flood Warning	AMA	Armstrong, Carson, Potter	6 hr
Oct 31, 9:11 AM CST	Flash Flood Warning	AMA	Armstrong, Carson, Oldham, Potter, Randall	7 hr
Oct 31, 9:11 AM CST	Flash Flood Warning	AMA	Deaf Smith	7 hr

Nearby

Tornado Warnings in Texas, 1998 Every tornado warning in 1998 Tornadoes in 1998

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.