Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 182, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Sep 19, 2001, 6:34 PM CDT for Carson County, Texas. It was in force for 56 min. 8 reports 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
- Sep 19, 2001, 6:34 PM CDT (23:34 UTC)
- Expired
- Sep 19, 2001, 7:30 PM CDT
- In force
- 56 min
- Issued by
- NWS Amarillo, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Carson County, TX
The radar
The Amarillo radar (KAMA), 31 km from the middle of the area, began a volume at 23:33 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 |
|---|---|---|---|
| Sep 19, 6:37 PM CDT | Hail 1.5 | Pantex, TX | |
| Sep 19, 6:40 PM CDT | Hail 1.75 | Pantex, TX | |
| Sep 19, 6:50 PM CDT | Hail 1.75 | Pantex, TX | |
| Sep 19, 6:55 PM CDT | Tornado F0 | Amarillo, TX | The tornado path length and width were estimated. The tornado remained over open country. |
| Sep 19, 6:56 PM CDT | Tornado F0 | Panhandle, TX | The tornado path length and width were estimated. The tornado remained over open country. This tornado orginally touched down just inside the Potter county line and then moved into Carson county. |
| Sep 19, 7:03 PM CDT | Hail 1 | Pantex, TX | |
| Sep 19, 7:06 PM CDT | Hail 2.5 | Pantex, TX | |
| Sep 19, 7:15 PM CDT | Hail 0.88 | Pantex, TX |
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
Amarillo Airport, TX (KAMA), launched 12:00Z, 11.6 hours before the alert went out and 30 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
- 471 J/kg
- Mixed-layer CIN
- -150 J/kg
- Mixed-layer LCL
- 889 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- -44 m²/s²
- 0-3 km storm-relative helicity
- 85 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.7
The text
As transmitted, in the capitals the NWS used until 2016.
117 WUUS54 KAMA 192333 SVRAMA TXC065-200030- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AMARILLO TX 634 PM CDT WED SEP 19 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CARSON COUNTY IN TEXAS * UNTIL 730 PM CDT * AT 634 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 14 MILES WEST OF PANHANDLE...MOVING SOUTHEAST AT 10 MPH. * SOME LOCATIONS AFFECTED BY THE STORM INCLUDE... PANHANDLE...WHITE DEER...SKELLYTOWN AND GROOM LARGE HAIL...DAMAGING WINDS...AND TORRENTIAL RAINS ARE EXPECTED WITH THIS STORM. TAKE COVER IN A SUBSTANTIAL SHELTER. LAT...LON 3520 10163 3519 10110 3562 10109 3563 10161
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 Sep 19, 4:40 PM CDT, 1 hour 54 minutes earlier.
Area forecast discussion, Sep 19, 4:40 PM CDT, 1 hour 54 minutes before
TEXAS/OKLAHOMA PANHANDLES FORECAST DISCUSSION NATIONAL WEATHER SERVICE AMARILLO TX 440 PM CDT WED SEP 19 2001 MID TO UPPER LEVEL MOISTURE STREAMING NORTHEAST OVER THE SOUTHERN ROCKIES AND SOUTHERN HIGH PLAINS THIS AFTERNOON AS LOW-LEVEL MOISTURE WAS BEING PULLED NORTH ACROSS WEST TEXAS AND INTO SOUTHWEST KANSAS...IN ADVANCE OF A DEVELOPING DRYLINE IN EASTERN NEW MEXICO. ISOLATED SHOWERS AND THUNDERSTORMS CAN BE EXPECTED TONIGHT PRIMARILY NEAR BANDS OF LOW-LEVEL CONVERGENCE STRETCHING FROM SOUTHWESTERN KANSAS INTO SOUTHEASTERN COLORADO...AS WELL AS ACROSS THE CENTRAL AND SOUTHWESTERN TEXAS PANHANDLE. THUNDERSTORMS WILL LIKELY RECEIVE ADDITIONAL LIFT OVERNIGHT FROM STRENGTHENING LOW-LEVEL WARM AIR ADVECTION PATTERN/ISENTROPIC LIFT. DRYLINE TO TIGHTEN UP ON THURSDAY AS IT PUSHES INTO THE CENTRAL TEXAS PANHANDLE. ISOLATED THUNDERSTORMS AGAIN POSSIBLE THURSDAY AFTERNOON...MAINLY ACROSS THE EAST. HOWEVER...COLD FRONT WILL PUSH SOUTH INTO THE OKLAHOMA PANHANDLE THURSDAY EVENING AND THROUGH THE TEXAS PANHANDLE BY LATE THURSDAY NIGHT. FOR NOW WILL INTRODUCE SLIGHT CHANCE POPS FOR THURSDAY NIGHT...BUT LATER SHIFTS MAY HAVE TO INCREASE POP VALUES AS MOIST UPSLOPE FLOW STRENGTHENS BEHIND FRONT. ALSO...MID LEVEL SUBTROPICAL MOISTURE WILL HANG AROUND AS WELL WITH BANDS OF EMBEDDED VORTICITY. LAST SEVERAL SHORT RANGE MODEL RUNS... PARTICULARLY ETA/AVN...HAVE INDICATED BEST CHANCE FOR PRECIPITATION TO BE SATURDAY AND SATURDAY NIGHT...PRIMARILY AS A RESULT OF STRONGER PASSING TO THE NORTH OF THE AREA. THEREFORE...RAISED POPS FROM SLIGHT CHANCE TO CHANCE. UPSLOPE COMPONENT EXPECTED TO PERSIST THROUGH REST OF THE WEEK...SO NO CHANGES TO SUNDAY FORECAST OF SLIGHT CHANCE TSRA. IN THE EXTENDED...UPPER LEVEL FLOW WILL CONTINUE TO VEER... PRACTICALLY BECOMING NORTHERLY BY EARLY NEXT WEEK. THIS MAY AID ANOTHER WEAK COLD FRONT TO PUSH SOUTH ACROSS THE AREA BY SUNDAY NIGHT/MONDAY. UPSTREAM FLOW WILL BE STRONG ENOUGH TO SPILL OVER THE NORTHERLY FLOW...ALLOWING RIDGE TO DEVELOP OVER THE CENTRAL U.S. BY MID WEEK...RESULTING IN A WARMING TREND. .AMA... TX...NONE. OK...NONE. JH
In the hours before
Special weather statement, Sep 19, 3:20 PM CDT, 3 hours 14 minutes before
OKZ001>003-TXZ001>020-192200- TEXAS/OKLAHOMA PANHANDLES THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE AMARILLO TX 320 PM CDT WED SEP 19 2001 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS ALL OF THE TEXAS AND OKLAHOMA PANHANDLES THIS AFTERNOON AND THIS EVENING. A WARM...MOIST...AND UNSTABLE AIRMASS IS IN PLACE ACROSS THE PANHANDLES THIS AFTERNOON. A SURFACE LOW PRESSURE TROUGH ACROSS SOUTHEAST NEW MEXICO AND SOUTHWEST KANSAS WILL MOVE SOUTHEAST INTO WESTERN SECTIONS OF THE PANHANDLES THIS AFTERNOON...AND WILL CONTINUE MOVING SOUTHEAST THIS EVENING AND TONIGHT. CONVERGING WINDS ALONG THE TROUGH WILL LEAD TO THE DEVELOPMENT OF THUNDERSTORMS. DUE TO THE INSTABILITY ALREADY IN PLACE...STORMS WILL HAVE THE POTENTIAL TO STRENGTHEN QUICKLY. SOME OF THE STRONGER STORMS COULD BECOME SEVERE. THE THUNDERSTORMS ARE EXPECTED TO MOVE SOUTHEAST INTO PANHANDLES. THE MAIN THREATS FROM THE STORMS WILL BE LARGE HAIL...DAMAGING WINDS...AND HEAVY RAIN. THE TURNING OF WINDS WITH HEIGHT WILL SUPPORT ORGANIZED STRONG TO SEVERE THUNDERSTORMS...BUT THE WIND SPEEDS AT THE MID LEVELS ARE EXPECTED TO REMAIN BELOW THOSE NEEDED FOR TORNADO DEVELOPMENT. SPOTTERS AND EMERGENCY MANAGEMENT OFFICIALS ACROSS THE TEXAS AND OKLAHOMA PANHANDLES SHOULD REMAIN ALERT FOR POSSIBLE ACTIVATION THIS AFTERNOON OR THIS EVENING. COCKRELL
The office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 19, 6:47 PM CDT | Tornado Warning | AMA | Carson, Potter | 43 min |
Nearby
Severe Thunderstorm Warnings in Texas, 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.