Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 150, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Aug 17, 2001, 5:46 PM CDT for Beaver County, Oklahoma. It was in force for 44 min. 1 report came from inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- Aug 17, 2001, 5:46 PM CDT (22:46 UTC)
- Expired
- Aug 17, 2001, 6:30 PM CDT
- In force
- 44 min
- Issued by
- NWS Amarillo, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Beaver County, OK
The radar
The Dodge City radar (KDDC), 128 km from the middle of the area, began a volume at 22:47 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 |
|---|---|---|---|
| Aug 17, 6:09 PM CDT | Thunderstorm Wind 52 E | 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 nearest sounding before it
Dodge City, (KDDC), launched 12:00Z, 10.8 hours before the alert went out and 131 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
- 180 J/kg
- Mixed-layer CIN
- -116 J/kg
- Mixed-layer LCL
- 1305 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
597 WUUS54 KAMA 172248 SVRAMA OKC007-172330- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AMARILLO TX 546 PM CDT FRI AUG 17 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN BEAVER COUNTY IN THE OKLAHOMA PANHANDLE * UNTIL 630 PM CDT * AT 546 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 6 MILES NORTHWEST OF ELMWOOD...OR ABOUT 9 MILES SOUTH OF BEAVER...MOVING EAST AT 10 MPH. * SOME LOCATIONS AFFECTED BY THE STORM INCLUDE... BALKO AND ELMWOOD LARGE HAIL...DAMAGING WINDS...AND TORRENTIAL RAINS ARE EXPECTED WITH THIS STORM. TAKE COVER IN A SUBSTANTIAL SHELTER. LAT...LON 3681 10064 3664 10071 3653 10039 3674 10030
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 Aug 17, 3:26 PM CDT, 2 hours 20 minutes earlier.
Area forecast discussion, Aug 17, 3:26 PM CDT, 2 hours 20 minutes before
TEXAS/OKLAHOMA PANHANDLES FORECAST DISCUSSION NATIONAL WEATHER SERVICE AMARILLO TX 326 PM CDT FRI AUG 17 2001 PROGRESSIVE UPPER PATTERN FCST NEXT SEVERAL DAYS AS INITIAL SHRTWV MVS THROUGH MS VALLEY INTO NE U.S. UPPER RIDGE OVER INTER-MOUNTAIN REGION WILL SLIDE E INTO SRN PLAINS BUT LOSE AMPLITUDE. VERY STRONG STORM SYSTEM WILL DROP S OUT OF GULF OF AK AND AFFECT PAC NW EARLY NEXT WITH AFFECTS BEING FELT IN PLAINS AS EARLY AS MID WEEK. FOR TONIGHT...PLAN ON AREAL COVERAGE TERMS IN SE ZNS WHERE ISOLD CONVECTION OCCURRING ALONG SHEAR AXIS EXTENDING NE INTO CENTRAL OK. SUBSIDENCE ATTM BEHIND THIS WV ACROSS NE BUT A FEW SHOWERS ATTEMPTING TO ORGANIZE THERE. ACTIVITY ACROSS ERN NM LIKELY TO PERSIST LONGEST AND DROP S VCNTY WRN CWA BORDER THIS EVE. WILL GO WITH HIGHER UNCERTAINTY POPS NW WITH CONTINUED 20 POPS CENTRAL/NE. WEAK WINDSHIFT OVERNIGHT COVERED WELL BY PREVIOUS PACKAGE WITH LITTLE OR NO IMPACT ON TEMPS ON SAT. H8 TEMPS ACTUALLY PROGGED TO WARM A COUPLE DEGREES EACH DAY THIS WEEKEND SO WILL CONTINUE WARMING TREND THROUGH SUN DESPITE MOS INSISTENCE THE OTHER WAY. IN EXTENDED... PLAN ON KEEPING POPS IN NW ZNS THROUGHOUT AS PLENTY OF SUBTROPICAL MOISTURE ACROSS OLD MEXICO BLEEDING INTO SW U.S. AS RIDGE AXIS SHIFTS E WITH TIME...MOUNTAIN CONVECTION LIKELY TO BECOME MORE NUMEROUS. WEAK STEERING FLOW WILL ALLOW CHCS FOR ONLY NW ZNS INITIALLY...HOWEVER THIS EXPECTED CHG LATER IN WEEK AS STRONGER SWRLY FLOW MVS E. TEMPS SHOULD CONTINUE TO WARM INTO VERY EARLY NEXT WEEK BEFORE LEVELING OFF OR DROPPING THROUGH MIDWEEK WITH INCREASED CLOUDS/PRECIP POSSIBILITIES. .AMA... TX...NONE. OK...NONE. COBB
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2001Every severe thunderstorm warning in 2001
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.