Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 69, NWS Amarillo, TX

May 23, 2002Beaver County, Oklahoma

NWS Amarillo, TX issued this severe thunderstorm warning at May 23, 2002, 7:52 PM CDT for Beaver County, Oklahoma. It was in force for 38 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 23, 2002, 7:52 PM CDT (00:52 UTC)
Expired: May 23, 2002, 8:30 PM CDT
In force: 38 min
Issued by: NWS Amarillo, TX
Area: Counties, with a storm outline in the text

County Beaver County, OK

The radar

The Dodge City radar (KDDC), 138 km from the middle of the area, began a volume at 00:56 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 23, 8:05 PM CDT	Hail 0.88	Balko, OK
May 23, 8:34 PM CDT	Hail 0.88	Beaver, 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

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 23, 5:00 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 0.9 hours before the alert went out and 142 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: 1332 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 192 m²/s²
0-3 km storm-relative helicity: 260 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KAMA 240052
SVRAMA
OKC007-240130-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
751 PM CDT THU MAY 23 2002

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BEAVER COUNTY IN THE OKLAHOMA PANHANDLE

* UNTIL 830 PM CDT

* AT 751 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER GRAY...OR ABOUT 7 MILES SOUTHWEST OF
  BEAVER...MOVING NORTHEAST AT 25 MPH.

* SOME LOCATIONS AFFECTED BY THE STORM INCLUDE...
  BEAVER...MOCANE...GRAY...FLORIS...ELMWOOD...BRYANS CORNER...BOYD
  AND BALKO

GOLFBALL HAIL...60 MPH WINDS ARE EXPECTED WITH THIS STORM. 
TAKE COVER IN A SUBSTANTIAL SHELTER.

LAT...LON 3656 10094 3650 10074 3658 10049 3682 10028
          3691 10070

SLATTERY

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 23, 2:55 PM CDT, 4 hours 57 minutes earlier.

Area forecast discussion, May 23, 2:55 PM CDT, 4 hours 57 minutes before

TEXAS/OKLAHOMA PANHANDLES FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AMARILLO TX
255 PM CDT THU MAY 23 2002

LATEST ANALYSIS SUGGESTS THAT COLD FRONT HAS STALLED OVER CNTRL ZNS
AS A NEW SFC LOW GETS BETTER ORGANIZED BETWEEN KROW AND KCVS AS
HINTED BY ETA MODEL. THIS SFC LOW IS PROGGED BY ALL SHORT RANGE
MODELS TO TRACK NEWD THRU FCST AREA TNGT AND FRI...WITH FRONTAL
BOUNDARY ACTUALLY RETREATING NWD TO NRN ZNS IN ACCORDANCE WITH 12Z
ETA/AVN/NGM...THEN MOVG SWD AGAIN LATER FRI AND FRI NIGHT...OUT OF
THE PNHDLS BY 12Z SAT. WILL CONTINUE TO CARRY HIGHEST POPS NERN HALF
TNGT...SLGT CHC ALL ZNS FRI...CHC POPS FRI NIGHT THRU THE MEMORIAL
WEEKEND. UA PATTERN FEATURES BROAD WSW FLOW WITH EMBEDDED
DISTURBANCES ZIPPING ACROSS ON OCCASION. COMBINATION OF MOISTURE...
WEAK IMPULSES AND PROXIMITY OF SFC BOUNDARIES WARRANTS THE CHC POPS
THRU WEEKEND...AGAIN FAIRLY TYPICAL OF CLIMATOLOGY OF LATE MAY HERE
ON SRN HI PLAINS. MEDIUM RANGE MODELS TEND TO AGREE ON BROAD WSW
FLOW ALOFT CONTINUING INTO TUE BEFORE HEIGHTS RISE AND RIDGING
OCCURS OVER WRN US. DEPENDING ON RIDGE AXIS...COULD SEE SOME SORT OF
NW FLOW OVER PNHDLS WED AND THU WHICH ALWAYS RAISES A CONCERN OF NW
FLOW WX EVENTS. WILL MAINTAIN THE CHC POPS FOR WED AND ADD THU IN AS
WELL DUE TO THAT PSBLTY BASED ON SOME SEMBLANCE OF MEDIUM RANGE
MODEL AGREEMENT...EXCEPTION BEING THE ECMWF WHICH HOLDS ON TO
SLIGHTLY LOWER HEIGHTS A BIT LONGER.

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

ANDRADE

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 8:41 PM CDT	Severe Thunderstorm Warning	AMA	Beaver	49 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2002 Every severe thunderstorm warning in 2002

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.