Alert archive / Texas / Flash Flood Warnings in 2000

Flash Flood Warning 17, NWS Amarillo, TX

October 25, 2000Hemphill County, Lipscomb County, Wheeler County, Texas

NWS Amarillo, TX issued this flash flood warning at Oct 25, 2000, 1:55 AM CDT for Hemphill County, Lipscomb County, Wheeler County, Texas. It was in force for 3 hr. 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: Oct 25, 2000, 1:55 AM CDT (06:55 UTC)
Expired: Oct 25, 2000, 5:00 AM CDT
In force: 3 hr
Issued by: NWS Amarillo, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Hemphill County, TX, Lipscomb County, TX, Wheeler County, TX

The radar

The Amarillo radar (KAMA), 136 km from the middle of the area, began a volume at 06:56 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 nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 6.9 hours before the alert went out and 135 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: 76 J/kg
Mixed-layer CIN: -113 J/kg
Mixed-layer LCL: 1016 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 140 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KAMA 250659
FFWAMA
TXC211-295-483-251000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
155 AM CDT WED OCT 25 2000

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  HEMPHILL COUNTY IN THE TEXAS PANHANDLE
  WHEELER COUNTY IN THE TEXAS PANHANDLE
  LIPSCOMB COUNTY IN THE TEXAS PANHANDLE

* UNTIL 500 AM CDT

* AT 155 AM CDT...WEATHER SERVICE RADAR INDICATED THUNDERSTORMS      
  PRODUCING VERY HEAVY RAINFALL OVER LIBSCOMB...WHEELER...AND        
  HEMPHILL COUNTIES.  RADAR ESTIMATES THAT OVER 4 INCHES HAVE FALLEN 
  ACROSS MOST OF WHEELER AND HEMPHILL COUNTIES WITH 3 INCHES OF      
  RAINFALL ACROSS LIBSCOMB COUNTY. MORE THUNDERSTORMS WITH VERY      
  HEAVY RAINFALL ARE EXPECTED TO MOVE OVER THESE COUNTIES FOR THE     
  NEXT FEW HOURS.

* SOME LOCATIONS AFFECTED INCLUDE...
  WHEELER...TWITTY...SHAMROCK...NEW MOBEETIE...LIPSCOMB...LELA...LAKE
  MARVIN...KELLERVILLE...HIGGINS...GLAZIER...FOLLETT...DARROUZETT...
  CANADIAN...BRISCOE AND ALLISON

EXCESSIVE RUNOFF WILL INUNDATE ROADS AND FARM AND RANCH LAND. DO NOT 
DRIVE ACROSS FLOODED ROADWAYS! NEVER ATTEMPT TO CROSS FLOWING WATER 
IN A CAR OR ON FOOT.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE FLOOD
DANGERS. DO NOT DRIVE INTO FLOODED AREAS.

LAT...LON 3519 10054 3519 10000 3649 10002 3648 10054

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Oct 24, 3:02 PM CDT, 10 hours 53 minutes earlier.

Area forecast discussion, Oct 24, 3:02 PM CDT, 10 hours 53 minutes before

TEXAS/OKLAHOMA PANHANDLES FORECAST DISCUSSION...CORRECTED
NATIONAL WEATHER SERVICE AMARILLO TX
302 PM CDT TUE OCT 24 2000

MORE HEAVY RAINFALL AND POSSIBLE FLASH FLOODING TONIGHT ACRS PORTIONS
OF THE PNHDLS. LATEST SFC ANLYS SHOWED TROUGH EXTENDING NORTH TO
SOUTH NEAR THE NEW MEXICO STATE LINE.  ALOFT...UPR LOW SPINNING OVER
SRN UTAH.  FCST CALLS FOR THE UPR LOW TO OPEN AND MOVE EAST OVER THE
NEXT 24 HOURS AS UPSTREAM KICKER SLIDES SWD DOWN THE WEST COAST.  FOR
TNGT...RIGHT ENTRANCE REGION OF JET ASSOC WITH THE SYSTEM WILL CREATE
FAVORABLE UVM OVER THE PNHDLS...SCPLY THE EASTERN ZONES.  EASTERN
ZONES WILL ALSO CONT TO SEE DEEP MSTR WITH PWS ABV AN INCH WHILE PWS
IN THE WEST EXPECTED TO FALL TO BLO A HALF INCH.  SO WITH BEST LIFT
AND BEST MSTR IN THE EAST...WILL CARRY THE HIGHEST POPS THERE.  SOME
AREAS ON THE EASTERN ZONES RECEIVED HEAVY RAINFALL YDA AND LAST NIGHT
(OVER 4 INCHES IN OCHILTREE COUNTY) SO ANY ADDITIONAL HEAVY RNFL WILL
CREATE PROBLEMS. DECIDED TO ISSUE A FLASH FLOOD WATCH FOR THE ERN TX
PNHDL. ORIGINAL THOUGHT WAS TO KEEP THE WATCH EAST OF AMA BUT
SINCE WSR-88D SHOWS A SGFNT BAND OF RAIN TAKING AIM ON THE FLOOD
PRONE PALO DURO CANYON...DECIDED TO INCLUDE RANDALL AND POTTER
COUNTIES.

EXPECT WEST TO EAST CLEARING ON WED AS SYSTEM AND ASSOC VORT MOVES
ACRS THE AREA.  DRY CONDITIONS THEN EXPECTED WED NIGHT AND THU AS
SHRTWV RIDGE BUILDS OVER THE REGION.

MEDIUM RANGE MDLS DOING A MUCH BETTER JOB WITH THE NEXT SYSTEM OFF
THE WEST COAST. EXPECT THIS LOW TO MOVE ACRS THE SW U.S. FRI THEN
OVER THE PNHDLS SAT.

.AMA...
TX...FLASH FLOOD WATCH TONIGHT FOR ZONES 4-5-8>10-12>15-17>20.
OK...FLASH FLOOD WATCH TONIGHT FOR Z(ONES 3.

SP

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 24, 7:55 PM CDT	Flash Flood Warning	AMA	Wheeler	3 hr
Oct 24, 11:05 PM CDT	Flash Flood Warning	AMA	Hemphill, Wheeler	3 hr

Nearby

Flash Flood Warnings in Texas, 2000 Every flash flood 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.