Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 4, NWS Amarillo, TX

July 22, 2002Potter County, Randall County, Texas

NWS Amarillo, TX issued this flash flood warning at Jul 22, 2002, 5:10 PM CDT for Potter County, Randall County, Texas. It was in force for 110 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
Jul 22, 2002, 5:10 PM CDT (22:10 UTC)
Expired
Jul 22, 2002, 7:00 PM CDT
In force
110 min
Issued by
NWS Amarillo, TX
Area
Counties, with a storm outline in the text

Counties Potter County, TX, Randall County, TX

The radar

The Amarillo radar (KAMA), 25 km from the middle of the area, began a volume at 22:09 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 12:00Z, 10.2 hours before the alert went out and 26 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 12:00Z on 2002-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 277 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 12:00Z on 2002-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 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
277 J/kg
Mixed-layer CIN
-183 J/kg
Mixed-layer LCL
1695 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
13 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 
WGUS54 KAMA 222210
FFWAMA
TXC375-381-230000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
509 PM CDT MON JUL 22 2002

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  POTTER COUNTY IN THE TEXAS PANHANDLE
  THIS INCLUDES THE CITY OF AMARILLO
  RANDALL COUNTY IN THE TEXAS PANHANDLE
  THIS INCLUDES THE CITY OF CANYON

* UNTIL 700 PM CDT

* AT 509 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED            
  VERY HEAVY RAIN OVER AMARILLO...MOVING NORTH AT 10 MPH. AMARILLO
  EMERGENCY MANAGEMENT REPORTS RISING WATER IN MANY LOCATIONS
  IN AMARILLO. MAJOR FLOODING HAS BEEN REPORTED ON I-40 AND
  ALSO ON AMARILLO BLVD.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUFFALO LAKE...BUSHLAND...
  LAKE TANGLEWOOD...PALO DURO CANYON...UMBARGER AND VALLEY DE ORO

IF FLASH FLOODING IS OBSERVED ACT QUICKLY MOVE TO HIGHER GROUND TO
ESCAPE FLOOD WATERS.

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

LAT...LON 3482 10217 3483 10165 3558 10165 3559 10214

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 22, 4:54 PM CDTSevere Thunderstorm WarningAMAPotter66 min

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.