Alert archive / Texas / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 105, NWS Amarillo, TX

June 11, 1997Collingsworth County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Jun 11, 1997, 10:09 PM CDT for Collingsworth County, Texas. It was in force for 66 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: Jun 11, 1997, 10:09 PM CDT (03:09 UTC)
Expired: Jun 11, 1997, 11:15 PM CDT
In force: 66 min
Issued by: NWS Amarillo, TX
Area: Whole counties

County Collingsworth County, TX

The radar

The Amarillo radar (KAMA), 134 km from the middle of the area, began a volume at 03:12 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
Jun 11, 10:10 PM CDT	Tornado F1	Wellington, TX	Tornado remained over open country and track was estimated.

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
Jun 11, 9:15 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 3.2 hours before the alert went out and 133 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: 875 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 2722 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 104 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

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.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Amarillo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 11, 3:15 PM CDT, 6 hours 54 minutes earlier.

Area forecast discussion, Jun 11, 3:15 PM CDT, 6 hours 54 minutes before

FPUS3 KAMA 111951
AFDAMA

TEXAS/OKLAHOMA PANHANDLES AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AMARILLO TX
315 PM CDT WED JUN 11 1997

TEMPS HAVE RISEN INTO MID TO UPR 80S ACRS AREA...XCP OVR ERN AND NERN
SXNS...WHICH LIE ON ERN SIDE OF SFC BNDRY ENHANCED BY OKLA OUTFLOW.
DWPTS NR 70 DEG F ARE POOLING VCNTY THIS BNDRY...AND MSTR FLUX CNVGNC
HAS BEEN MAXIMIZED ALG IT SINCE LATE MRNG.  OTHER FEATURE OF NOTE IS
DRYLN...MOVG THRU WRN OK PNHDL AND NWRN CORNER OF TX PNHDL.  WL GROUP
ZNS WITH AREAS W OF DRYLN HAVING NO MENTION OF SVR.  RMNG SXNS WL BE
UNDER THE GUN DUE TO VERY UNSTABLE AMS...EWD PROGRESSION OF DRYLN EXPCD
...AND H5 JET STREAK APCHG...WHICH WL AFFECT NRN ZNS.  LOW-LVL JET WL
INCR DURG NGT...SPCLY OVR ERN ZNS.  THUS HI TO VRY HI POPS IN ORDER 1ST
PD.  DRYLN NOT EXPCD TO RACE EWD ACRS AREA...BUT TSTMS WL MOV EWD OFF
OF IT THIS EVE AND TNGT.  GOOD SHEAR WL CONT...SPCLY OVR ERN ZNS.  SOME
ACTIVITY WL RMN OVR ERN ZNS BY ERY MRNG.  ON THU...LOW-LVL WLYS PVL MUCH
OF DAY WITH SOME BACKING OCRG LATE.  SHEARS DMSHD AND DRIER AIR WORKS IN.
SOME EVE TRW PSBL HOWEVER AS NEXT JET STREAK APCHS FM SW.  SLGT CHC THU
EVE THRU FRI EVE.  IN EXTDD...LONGWV TROF RMNS TO OUR W.  CONT WITH CHC
TRW THRU EXTDD.  03

.AMA...
TX...NONE.
OK...NONE.

COCKRELL

In the hours before

Special weather statement, Jun 11, 5:25 PM CDT, 4 hours 44 minutes before

OKZ002-003-TXZ003>005-008>010-112245-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
525 PM CDT WED JUN 11 1997

TORNADO WATCH NUMBER 402 HAS BEEN CANCELLED FOR THE FOLLOWING
COUNTIES...IN THE OKLAHOMA PANHANDLE...TEXAS...IN THE TEXAS
PANHANDLE...HANSFORD AND HUTCHINSON. THE THREAT OF SEVERE WEATHER
HAS DIMINISHED IN THIS AREA.

TORNADO WATCH NUMBER 402 REMAINS IN EFFECT UNTIL 9 PM CDT FOR BEAVER
COUNTY IN THE OKLAHOMA PANHANDLE...AND FOR OCHILTREE...LIPSCOMB...
ROBERTS...AND HEMPHILL COUNTIES IN THE TEXAS PANHANDLE.

ANDRADE

Special weather statement, Jun 11, 5:29 PM CDT, 4 hours 40 minutes before

OKZ002-003-TXZ003>005-008>010-112245-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
525 PM CDT WED JUN 11 1997

TORNADO WATCH NUMBER 402 HAS BEEN CANCELLED FOR THE FOLLOWING
COUNTIES...IN THE OKLAHOMA PANHANDLE...TEXAS...IN THE TEXAS
PANHANDLE...HANSFORD AND HUTCHINSON. THE THREAT OF SEVERE WEATHER
HAS DIMINISHED IN THIS AREA.

TORNADO WATCH NUMBER 402 REMAINS IN EFFECT UNTIL 9 PM CDT FOR BEAVER
COUNTY IN THE OKLAHOMA PANHANDLE...AND FOR OCHILTREE...LIPSCOMB...
ROBERTS...AND HEMPHILL COUNTIES IN THE TEXAS PANHANDLE.

ANDRADE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 7:00 PM CDT	Flash Flood Warning	AMA	Wheeler	4 hr
Jun 11, 7:04 PM CDT	Tornado Warning	AMA	Wheeler	56 min
Jun 11, 7:21 PM CDT	Tornado Warning	AMA	Collingsworth	69 min
Jun 11, 7:59 PM CDT	Tornado Warning	AMA	Collingsworth, Wheeler	61 min
Jun 11, 8:44 PM CDT	Tornado Warning	AMA	Donley, Gray	61 min
Jun 11, 9:02 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Wheeler	58 min
Jun 11, 9:43 PM CDT	Flash Flood Warning	AMA	Collingsworth, Wheeler	4 hr
Jun 11, 10:21 PM CDT	Tornado Warning	AMA	Collingsworth	39 min
Jun 12, 5:13 PM CDT	Severe Thunderstorm Warning	AMA	Hartley	62 min
Jun 12, 5:29 PM CDT	Severe Thunderstorm Warning	AMA	Dallam	61 min
Jun 12, 5:54 PM CDT	Severe Thunderstorm Warning	AMA	Moore	66 min
Jun 12, 6:11 PM CDT	Severe Thunderstorm Warning	AMA	Wheeler	64 min
Jun 12, 6:17 PM CDT	Severe Thunderstorm Warning	AMA	Hartley	43 min

Nearby

Severe Thunderstorm Warnings in Texas, 1997 Every severe thunderstorm warning in 1997

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.