Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 71, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at May 23, 2002, 8:41 PM CDT for Beaver County, Oklahoma. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 23, 2002, 8:41 PM CDT (01:41 UTC)
- Expired
- May 23, 2002, 9:30 PM CDT
- In force
- 49 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), 133 km from the middle of the area, began a volume at 01:42 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.
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, 1.7 hours before the alert went out and 136 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.
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KAMA 240141 SVRAMA OKC007-240230- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AMARILLO TX 838 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 930 PM CDT * AT 838 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 2 MILES SOUTHEAST OF MOCANE...OR ABOUT 3 MILES NORTH OF BEAVER...MOVING NORTHEAST AT 35 MPH. ANOTHER SEVER THUNDERSTORM WAS JUST EAST OF GRAY. * SOME LOCATIONS AFFECTED BY THE STORM INCLUDE... BEAVER...MOCANE...GRAY...FORGAN...FLORIS...ELMWOOD...BRYANS CORNER...BOYD AND BALKO QUARTER SIZE HAIL...60 MPH WINDS...AND HEAVY RAINS ARE EXPECTED. TAKE COVER IN A SUBSTANTIAL SHELTER. LAT...LON 3652 10093 3652 10045 3696 10018 3696 10073 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, 5 hours 46 minutes earlier.
Area forecast discussion, May 23, 2:55 PM CDT, 5 hours 46 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, 7:52 PM CDT | Severe Thunderstorm Warning | AMA | Beaver | 38 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2002Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.