Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 8, NWS Amarillo, TX

August 10, 2002Moore County, Texas

NWS Amarillo, TX issued this flash flood warning at Aug 10, 2002, 3:21 AM CDT for Moore County, Texas. It was in force for 114 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
Aug 10, 2002, 3:21 AM CDT (08:21 UTC)
Expired
Aug 10, 2002, 5:15 AM CDT
In force
114 min
Issued by
NWS Amarillo, TX
Area
Counties, with a storm outline in the text

County Moore County, TX

The radar

The Amarillo radar (KAMA), 73 km from the middle of the area, began a volume at 08:21 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, 8.4 hours before the alert went out and 73 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-pSkew-T log-p diagram, Amarillo Airport, TX at 00:00Z on 2002-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1169 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 00:00Z on 2002-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1169 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
2344 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
155 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.6

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KAMA 100821
FFWAMA
TXC341-101015-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
318 AM CDT SAT AUG 10 2002

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  MOORE COUNTY IN THE TEXAS PANHANDLE
  THIS INCLUDES THE CITY OF DUMAS

* UNTIL 515 AM CDT

* AT 316 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY 
  RAIN JUST NORTH AND WEST OF DUMAS...MOVING SOUTHEAST AT 25 MPH.
  FLOODING WILL CONTINUE AND COULD BRIEFLY WORSEN ACROSS THE CITY OF 
  DUMAS.

* OTHER LOCATIONS IN THE WARNING INCLUDE SUNRAY.

MOTORISTS WILL ENCOUNTER RAPIDLY RISING WATER AT UNDERPASSES...
INTERSECTIONS...DRAINAGE DITCHES AND OTHER LOW LYING AREAS.

NEVER ATTEMPT TO CROSS FLOWING WATER IN AN AUTOMOBILE OR ON FOOT
MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.

LAT...LON 3603 10164 3601 10212 3566 10211 3567 10169

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 7:37 PM CDTSevere Thunderstorm WarningAMAPotter53 min
Aug 9, 9:48 PM CDTSevere Thunderstorm WarningAMALipscomb57 min
Aug 9, 10:44 PM CDTSevere Thunderstorm WarningAMAMoore61 min
Aug 9, 11:51 PM CDTSevere Thunderstorm WarningAMAMoore54 min
Aug 10, 12:20 AM CDTFlash Flood WarningAMAMoore3 hr
Aug 10, 5:05 AM CDTFlash Flood WarningAMAMoore3 hr
Aug 10, 5:36 AM CDTFlash Flood WarningAMARandall3 hr

Nearby

Flash Flood Warnings in Texas, 2002Every flash flood 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.