Alert archive / Texas / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 52, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Apr 30, 2000, 3:39 AM CDT for Collingsworth County, Wheeler County, Texas. It was in force for 66 min. No storm report in the archive falls 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.
The facts
- Issued
- Apr 30, 2000, 3:39 AM CDT (08:39 UTC)
- Expired
- Apr 30, 2000, 4:45 AM CDT
- In force
- 66 min
- Issued by
- NWS Amarillo, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Collingsworth County, TX, Wheeler County, TX
The radar
The Amarillo radar (KAMA), 120 km from the middle of the area, began a volume at 08:40 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 30, 12:30 AM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Amarillo Airport, TX (KAMA), launched 00:00Z, 8.7 hours before the alert went out and 120 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
- 2063 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 1561 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 137 m²/s²
- 0-3 km storm-relative helicity
- 440 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 20.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KAMA 300840 SVRAMA TXC087-483-300945- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AMARILLO TX 339 AM CDT SUN APR 30 2000 THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN COLLINGSWORTH COUNTY IN THE TEXAS PANHANDLE WHEELER COUNTY IN THE TEXAS PANHANDLE * UNTIL 445 AM CDT * AT 339 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 8 MILES SOUTHWEST OF LELA...OR ABOUT 12 MILES SOUTHWEST OF SHAMROCK...MOVING NORTHEAST AT 30 MPH. * SOME LOCATIONS AFFECTED BY THE STORM INCLUDE... SHAMROCK...LELA...TWITTY AND WHEELER LARGE HAIL...DAMAGING WINDS...AND TORRENTIAL RAINS ARE EXPECTED WITH THIS STORM. TAKE COVER IN A SUBSTANTIAL SHELTER. A TORNADO WATCH IS ALSO IN EFFECT. TORNADOES CAN DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. LAT...LON 3513 10057 3504 10038 3541 10008 3552 10032O
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 Apr 30, 3:30 AM CDT, 9 minutes earlier.
Area forecast discussion, Apr 30, 3:30 AM CDT, 9 minutes before
TEXAS/OKLAHOMA PANHANDLES FORECAST DISCUSSION NATIONAL WEATHER SERVICE AMARILLO TX 330 AM CDT SUN APR 30 2000 LATEST HAND ANALYSIS DEPICTS STRONG SFC COLD FRONT JUST E OF A KGLD TO KSPD TO S OF KRTN LINE. LOTS OF TSTMS FORMING ALONG AND E OF THIS FEATURE IN CO...NE...WRN KS. THIS FRONT...NOT THE DRYLINE...WILL HAVE THE SAY IN THE RAIN GAME HERE IN FCST AREA TODAY. THE FRONT IS NOT ALL THAT TRIVIAL BASED ON UPSTREAM TEMPS AND STRONG NORTH WINDS. CONSIDERING THE FACT THIS COLD FRONT HAS YET TO PUT THE BRAKES ON... HAVE LEANED HEAVILY WITH ETA SFC POSITIONING OF THE FRONT BY 00Z MON. IT APPEARS TO BE HANDLING THE SHALLOW WEDGE OF COOLER AIR BEST COMPARED TO THE NGM WHICH IS STUBBORN AND SLOWEST TO BRING THE COOL WEDGE DOWN INTO FCST AREA. AVN IN BETWEEN SFC WISE. ETA HAS HAD SUPERIOR PERFORMANCE WITH THESE SITUATIONS OVER HIGH PLAINS IN THE PAST. REFER TO PMDHMD TOO FOR MORE INFO. THEREFORE...WILL TRACK SFC FRONT THRU MOST OF FCST AREA TODAY AND WOULD NOT BE SURPRISED AT ALL IF IT ENDS UP SAGGING SWD THRU MUCH OF W TX BEFORE ALL IS SAID AND DONE DURG NEXT 48 HRS. ERN ZNS STAND TO BE THE TARGET OF HEAVIEST RAINFALL AMOUNTS DUE TO EXPECTED LOCATION OF FRONTAL BOUNDARY IMPINGING ON DEEP MOISTURE. LATER SHIFTS WILL NEED TO MONITOR THIS AREA TODAY. ACKNOWLEDGE QPFERD/94E BUT WILL NOT ISSUE FLASH FLOOD WATCH THIS PCKG DUE TO SOME UNCERTAINTY IN EVOLUTION. ALL SHORT RANGE MODELS HANDLE UPPER LVL LOW DIFFERENTLY AS WELL... AND IS TO BE EXPECTED SINCE THIS FEATURE IS TRAPPED BENEATH A CNTRL US RIDGE. UPPER LOW SHOULD BE A SLOW MOVER AND WILL MORE THAN LIKELY LINGER AROUND TX/OK PNHDLS REGION THRU LATE MON WHILE WEAKENING SLOWLY. SINCE FRONTAL BOUNDARY WILL END UP WELL E AND S OF FCST AREA...AXIS OF HEAVIEST RAINS SHOULD SHIFT S AND E AS WELL. NEVERTHELESS...COOL UPSLOPE LOW LVL WINDS...MORE THAN ADEQUATE MOISTURE...AND PROXIMITY OF UPPER LVL LOW CERTAINLY SUPPORTS THREAT OF PRECIP THRU MON. COOLER TEMPS DURG SHORT RANGE AS WELL. TOUGH CALL ON EXTENDED PERIODS AS ALL MEDIUM RANGE MODELS DIFFER ON MOVMT OF UPPER LOW. MAY DO SOME TWEEKING BUT GENERAL TREND IS FOR LESS PRECIP AND LOWER CHCS DURG THE TUE THRU THU TIME FRAME. 4PRELIM VALUES FOLLOW. ZONES WILL BE LATE MORE THAN LIKELY DUE TO ACTIVE WX. DHT 62/45/59 885 GUY 64/46/59 885 AMA 68/47/63 885 .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 |
|---|---|---|---|---|
| Apr 30, 2:51 AM CDT | Severe Thunderstorm Warning | AMA | Gray | 54 min |
| Apr 30, 3:16 AM CDT | Severe Thunderstorm Warning | AMA | Roberts | 59 min |
| Apr 30, 3:41 AM CDT | Severe Thunderstorm Warning | AMA | Gray | 34 min |
| Apr 30, 4:15 AM CDT | Severe Thunderstorm Warning | AMA | Gray, Roberts | 60 min |
| Apr 30, 4:46 AM CDT | Severe Thunderstorm Warning | AMA | Hemphill, Wheeler | 59 min |
| Apr 30, 9:34 AM CDT | Flash Flood Warning | AMA | Collingsworth | 3 hr |
Nearby
Severe Thunderstorm Warnings in Texas, 2000Every severe thunderstorm warning in 2000
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.