Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 28, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Apr 10, 2001, 9:13 PM CDT for Hartley County, Oldham County, Texas. It was in force for 32 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Apr 10, 2001, 9:13 PM CDT (02:13 UTC)
- Expired
- Apr 10, 2001, 9:45 PM CDT
- In force
- 32 min
- Issued by
- NWS Amarillo, TX
- Area
- Whole counties
Counties Hartley County, TX, Oldham County, TX
The radar
The Amarillo radar (KAMA), 92 km from the middle of the area, began a volume at 02:13 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 |
|---|---|---|---|
| Apr 10, 9:25 PM CDT | Hail 0.75 | Boys Ranch, TX | |
| Apr 10, 9:27 PM CDT | Hail 1 | Boys Ranch, 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 93 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
- 579 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 1839 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 186 m²/s²
- 0-3 km storm-relative helicity
- 262 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 5.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS54 KAMA 110214
SVRAMA
TXC205-359-110245-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
913 PM CDT TUE APR 10 2001
THE NATIONAL WEATHER SERVICE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EASTERN OLDHAM COUNTY IN THE TEXAS PANHANDLE
EASTERN HARTLEY COUNTY IN THE TEXAS PANHANDLE
* UNTIL 945 PM CDT
* AT 913 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS FROM 4 MILES SOUTHWEST OF HARTLEY TO 6
MILES NORTH OF VEGA...MOVING EAST AT 45 MPH.
* SOME LOCATIONS AFFECTED BY THESE STORMS INCLUDE...VEGA...BOYS
RANCH...CHANNING AND HARTLEY.
DESTRUCTIVE WINDS IN EXCESS OF 60 M{PH CAN BE EXPECTED. IF YOU CANNOT
GET UNDERGROUND...GO TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS!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 10, 3:45 PM CDT, 5 hours 28 minutes earlier.
Area forecast discussion, Apr 10, 3:45 PM CDT, 5 hours 28 minutes before
TEXAS/OKLAHOMA PANHANDLES FORECAST DISCUSSION NATIONAL WEATHER SERVICE AMARILLO TX 345 PM CDT TUE APR 10 2001 SFC WAVE IS OVR N-CNTRL KS ATTM...SE OF HLC. DRYLN EXTDS SWWD FM THIS LOW THRU NWRN CORNER OF OK...TO JUST E OF AMA...TO JUST W OF HOB. SFC WAVE HAS TROF AXIS WHICH DIPS SWWD INTO WRN OK PNHDL... THEN ARCS NWWD TO SFC LOW OVR CNTRL CO...NR LXV. THIS LOW HAS BEEN DEEPENING SGFNTLY DURG DAY WITH SFC TROF EXTDG SWD FM SAME THRU CNTRL NM TO NR ELP. PAC CDFNT MOVG THRU WRN NM...WITH -SN NOTED OVR HIR SXNS OF AZ. H5 LOW CURRENTLY NR CNTRL AZ...WITH COLD POOL ...STG DYNAMICS...AND DIFFLUENT FLOW...OVR AREA OF PRES FALLS... CNTRL CO THRU SWRN NM. DRYLN EXPCD TO RETREAT THIS EVE DUE TO APCHG DYANMICS. WITH INSTBY AND SHEAR EXPCD TO INCR OVR ERN ZNS...WL FCST NMRS TSTMS. OVR CNTRL ZNS WL FCST SCT TSTMS...AND WL KEEP SLGT CHC TSTMS GOING OVR WRN ZNS. SVR TSTMS EXPCD...SPLY OVR ERN ZNS. DRYLN...SFC TROF...AND PAC CDFNT WL ALL MOV THRU PNHDLS BY ARND 06Z...WITH CNVGNC INCRG THIS EVE. PRES GRADIENT WL TIGHTEN ENOUGH TO WARRANT ISSUANCE OF WND ADZY TNGT...AND WL LIKELY BE NEEDED THRU WED MRNG AS WELL. WED NGT THRU TUE EXPCD TO BE UNEVENTFUL AS H5 FLOW TRENDS TO ZONAL... AND THEN BACKS AGAIN AHEAD OF NEXT TROF ERY NEXT WK. WK CDFNT MAY ENTER FCST AREA ON TUE...BUT MSTR RTRN NOT ANTICIPATED PRIOR TO FROPA. 03 .AMA... TX...WIND ADVISORY TNGT TX ZNS 01>20. OK...WIND ADVISORY TNGT OK ZNS 01>03. COCKRELL
The office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 10, 9:27 PM CDT | Severe Thunderstorm Warning | AMA | Moore, Potter | 48 min |
| Apr 10, 10:10 PM CDT | Severe Thunderstorm Warning | AMA | Hansford, Hutchinson | 65 min |
| Apr 10, 10:22 PM CDT | Tornado Warning | AMA | Hutchinson | 33 min |
| Apr 10, 10:49 PM CDT | Severe Thunderstorm Warning | AMA | Gray | 61 min |
| Apr 10, 10:55 PM CDT | Tornado Warning | AMA | Hansford | 35 min |
| Apr 10, 11:06 PM CDT | Severe Thunderstorm Warning | AMA | Ochiltree | 54 min |
| Apr 10, 11:37 PM CDT | Severe Thunderstorm Warning | AMA | Lipscomb | 68 min |
| Apr 10, 11:37 PM CDT | Severe Thunderstorm Warning | AMA | Hemphill | 68 min |
| Apr 10, 11:46 PM CDT | Severe Thunderstorm Warning | AMA | Collingsworth, Wheeler | 59 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.