Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 149, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Aug 12, 2001, 9:10 PM CDT for Deaf Smith County, Texas. It was in force for 35 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 12, 2001, 9:10 PM CDT (02:10 UTC)
- Expired
- Aug 12, 2001, 9:45 PM CDT
- In force
- 35 min
- Issued by
- NWS Amarillo, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Deaf Smith County, TX
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 12, 9:27 PM CDT | Hail 0.88 | Hereford, 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 00:00Z, 2.2 hours before the alert went out and 100 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
- 1308 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 1640 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
941 WUUS54 KAMA 130211 SVRAMA TXC117-130245- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AMARILLO TX 910 PM CDT SUN AUG 12 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... DEAF SMITH COUNTY IN THE TEXAS PANHANDLE * UNTIL 945 PM CDT * AT 910 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 9 MILES NORTHEAST OF BOOTLEG...OR ABOUT 17 MILES WEST OF HEREFORD...MOVING EAST AT 10 MPH. * SOME LOCATIONS AFFECTED BY THE STORM INCLUDE... BOOTLEG AND SIMMS LARGE HAIL...DAMAGING WINDS...AND TORRENTIAL RAINS ARE EXPECTED WITH THIS STORM. TAKE COVER IN A SUBSTANTIAL SHELTER. LAT...LON 3504 10293 3477 10296 3478 10248 3506 10239
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 12, 9:09 PM CDT, 1 minute earlier.
Area forecast discussion, Aug 12, 9:09 PM CDT, 1 minute before
TEXAS/OKLAHOMA PANHANDLES FORECAST DISCUSSION NATIONAL WEATHER SERVICE AMARILLO TX 909 PM CDT SUN AUG 12 2001 SHOWERS WEAKENING BUT STILL HANGING ON ACROSS OK PNHDL VCNTY SFC TROUGH WHICH WAS ANALYZED AT 21Z STRETCHING FM SE CO SE INTO NW OK. THIS ACTIVITY BUILDING MORE W WITH TIME BUT EXPECTED TO DIMINISH WITH LOSS OF HEATING. OTHER STRONGER SCT STORMS ACROSS EXTREME SRN TX PNHDL IN SAME AREA AS LAST NIGHT STRETCHING E-W FM BETWEEN CVS/TCC TO PALO DURO CANYON. EXPECT THIS ACTIVITY TO PERSIST THROUGH EVE INTO EARLY MORNING MON. MODELS INDICATE STORMS SUPPORTED BY WEAK WAA/ISENTROPIC LIFT OVER STALLED FNTL BOUNDARY ACROSS SRN PORTIONS OF S PLAINS. IN ADDITION...CONVERGENCE AXIS NOTED AT H7 AHEAD OF WEAK SHRTWV TRAPPED BENEATH MID LEVEL RIDGE GIVING ADDED SUPPORT. WILL UPDATE ZNS TO LOWER/REMOVE POPS NORTH AND KEEP AREAL COVERAGE TERMS SRN ZNS WHERE ACTIVITY EXPECTED TO PERSIST. 0-6KM MEAN WIND VECTOR INDICATES A SWITCH BACK TO ERLY FLOW FOR ENTIRE AREA BY 12Z SO SOME LOCALIZED EXCESSIVE RAINS POSSIBLE ESP SW CORNER IF STORMS STALL AND MV BACK W...WILL KEEP MENTION OF LOCALLY HEAVY RAIN GOING THERE. .AMA... TX...NONE. OK...NONE. COBB
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.