Alert archive / Texas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 3, NWS Amarillo, TX

April 6, 2002Hemphill County, Lipscomb County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Apr 6, 2002, 10:49 PM CST for Hemphill County, Lipscomb County, Texas. It was in force for 56 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 6, 2002, 10:49 PM CST (04:49 UTC)
Expired: Apr 6, 2002, 11:45 PM CST
In force: 56 min
Issued by: NWS Amarillo, TX
Area: Counties, with a storm outline in the text

Counties Hemphill County, TX, Lipscomb County, TX

The radar

The Amarillo radar (KAMA), 158 km from the middle of the area, began a volume at 05:03 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 4.8 hours before the alert went out and 157 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 508 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 223 m²/s²
0-3 km storm-relative helicity: 178 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KAMA 070449
SVRAMA
TXC211-295-070545-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
1048 PM CST SAT APR 6 2002

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LIPSCOMB COUNTY IN TEXAS
  NORTHERN HEMPHILL COUNTY IN THE TEXAS PANHANDLE

* UNTIL 1145 PM CST

* AT 1048 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 11 MILES NORTHWEST OF CANADIAN...MOVING
  NORTHEAST AT 35 MPH.

* SOME LOCATIONS AFFECTED BY THE STORM INCLUDE...
  LIPSCOMB...CANADIAN...LAKE MARVIN...GLAZIER...HIGGINS...FOLLETT AND
  DARROUZETT

LARGE HAIL...DAMAGING WINDS...AND TORRENTIAL RAINS ARE EXPECTED WITH
THIS STORM. TAKE COVER IN A SUBSTANTIAL SHELTER.

LAT...LON 3583 10052 3583 10004 3648 10002 3648 10049

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 6, 2:30 PM CST, 8 hours 19 minutes earlier.

Area forecast discussion, Apr 6, 2:30 PM CST, 8 hours 19 minutes before

TEXAS/OKLAHOMA PANHANDLES FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AMARILLO TX
230 PM CST SAT APR 6 2002

CLOUD COVER WILL CONTINUE TO HAMPER SURFACE HEATING AND INSTABILITY
ACROSS THE CWA THIS AFTERNOON. SATELLITE SHOWS THICK CLOUD LAYER
WELL TO THE WEST OF THE AREA...BUT A LARGE BREAK SHOWING UP IN EAST
CENTRAL NM. WILL HAVE TO WATCH THE WESTERN EDGE OF CWA
THROUGH LATE THIS AFTERNOON. TONIGHT...MOISTURE AND DYNAMICS SHOULD
START TO COME TOGETHER AS THE TROUGH MAKES ITS WAY OVER THE MTNS
NEARS THE AREA TOWARD DAYBREAK SUNDAY. FEWER CLOUDS SUNDAY WILL ALLOW
SURFACE HEATING AND SHOULD BRING DRIER AIR EASTWARD. THUNDERSTORMS
CAN BE EXPECTED OVER A WIDE AREA WITH SOME SEVERE STORMS POSSIBLE...
ESPECIALLY IN THE CENTRAL AND EASTERN SECTIONS. SUNDAY NIGHT...
NORTHWEST FLOW SHOULD SPREAD OVER THE CWA AS THE TROUGH MOVES
FURTHER EASTWARD.

DRIER AIR BUILDS OVER THE AREA EARLY NEXT WEEK AND ALLOW SOME
WARMING THROUGH MIDWEEK. ANOTHER SYSTEM MOVES INTO THE PLAINS
THURSDAY BUT NOW APPEARS TO MOVE NORTH OF THE AREA. SOME COOL AIR
APPEARS TO AFFECT TEMPERATURES...BUT MOISTURE APPEARS WEAK AT THIS
POINT.  WILL LOWER TEMPERATURES SLIGHTLY FOR FRIDAY BUT WILL NOT
CHANGE PRECIP CHANCES AT THIS TIME.

AMA BB 048/065 042/065 043 652
DHT BB 047/070 040/062 042 432
BGD BB 048/065 041/064 063 552
GUY BB 046/068 039/061 044 443

.AMA...
TX...NONE.
OK...NONE.

WYNNE

In the hours before

Local storm report, Apr 6, 8:50 PM CST, 1 hour 59 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
850 PM CST SAT APR 06 2002

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0715 PM    HEREFORD                  TX   0.75 INCH HAIL
04/06/02   DEAF SMITH                     PUBLIC REPORT

Local storm report, Apr 6, 9:52 PM CST, 57 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
952 PM CST SAT APR 06 2002

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0715 PM    HEREFORD                  TX   0.75 INCH HAIL
04/06/02   DEAF SMITH                     PUBLIC REPORT

0847 PM    7W BORGER                 TX   0.88 INCH HAIL
04/06/02   HUTCHINSON                     REPORTED BY HUTCHINSON
                                          COUNTY EM.

0857 PM    BORGER                    TX   0.88 INCH HAIL
04/06/02   HUTCHINSON                     REPORTED BY HUTCHINSON
                                          COUNTY EM.

0915 PM    BORGER                    TX   0.88 INCH HAIL
04/06/02   HUTCHINSON                     REPORTED BY HUTCHINSON
                                          COUNTY EM.

0917 PM    3SE STINNETT              TX   0.88 INCH HAIL
04/06/02   HUTCHINSON                     REPORTED BY HUTCHINSON
                                          COUNTY EM.

The office that day

Everything else NWS Amarillo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 6, 7:45 PM CST	Severe Thunderstorm Warning	AMA	Potter	45 min
Apr 6, 8:57 PM CST	Severe Thunderstorm Warning	AMA	Hutchinson	48 min

Nearby

Severe Thunderstorm Warnings in Texas, 2002 Every severe thunderstorm warning in 2002

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.