Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 60, NWS Amarillo, TX

May 16, 1997Beaver County, Oklahoma

NWS Amarillo, TX issued this severe thunderstorm warning at May 16, 1997, 10:45 PM CDT for Beaver County, Oklahoma. It was in force for 45 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: May 16, 1997, 10:45 PM CDT (03:45 UTC)
Expired: May 16, 1997, 11:30 PM CDT
In force: 45 min
Issued by: NWS Amarillo, TX
Area: Whole counties

County Beaver County, OK

The radar

The Dodge City radar (KDDC), 121 km from the middle of the area, began a volume at 03:50 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
May 16, 10:50 PM CDT	Hail 1	Elmwood, 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
May 16, 7:15 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 3.8 hours before the alert went out and 124 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: 146 J/kg
Mixed-layer CIN: -101 J/kg
Mixed-layer LCL: 2206 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 269 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

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 May 16, 3:41 PM CDT, 7 hours 4 minutes earlier.

Area forecast discussion, May 16, 3:41 PM CDT, 7 hours 4 minutes before

TEXAS/OKLAHOMA PANHANDLES AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AMARILLO TX
315 PM CDT FRI MAY 16 1997

LOW-LVL MSTR HAS CONTD FEED INTO PNHDLS TDA...IN SPITE OF SWLY SFC
WNDS.  DWPTS HAVE HELD IN MID 50S OVR MOST SXNS.  WITH TEMPS IN UPR
70S TO LOWER 80S ATTM...RESULT IS LI/S FM -4 TO -6.  CAP IS NRLY
ERODED AREA-WIDE.  SFC TROF LYING JUST TO NE OF AREA HAS BCM ACTIVE
...WITH SVR WRNG FOR ERN UNION CO NM IN EFFECT ATTM.  WK FLOW ALF WL
DIRECT TSTMS TO SE.  HIEST POPS TNGT IN NERN ZNS WHERE PROXIMITY TO
SFC BNDRY IS CLOSEST AND WHERE STGR LOW-LVL WNDS WL PROVIDE BETTER
INFLOW.   H5 RDG UNDERGOES SOME DAMPENING DURG DAY ON SAT.  SFC WNDS
BCM MORE SLY AND BGN TO INCR DURG SAT AFTN...SPCLY OVR ERN ZNS.
GREATEST INSTBY WL LIE FM SW TO NE ACRS AREA...BUT SFC TROF EXPCD TO
RMN W OF AREA.  THUS WL CONT WITH LOW POPS SAT NGT THRU SUN NGT.  BY
SUN MRNG H5 RDG RETREATS TO WRN OLD MEX.  CDFNT MOVS THRU AREA MON.
H5 FLOW BACKS TO SWLY &AHD OF DVLPG TROF TUE AND WED.  ERGO GOOD CHC
TRW THRU EXTDD.  03

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

COCKRELL

In the hours before

Local storm report, May 16, 10:04 PM CDT, 41 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 16, 9:33 PM CDT	Severe Thunderstorm Warning	AMA	Beaver	62 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 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.