Alert archive / Texas / Flash Flood Warnings in 2001

Flash Flood Warning 7, NWS Midland/Odessa, TX

September 19, 2001Upton County, Texas

NWS Midland/Odessa, TX issued this flash flood warning at Sep 19, 2001, 7:48 PM CDT for Upton County, Texas. It was in force for 117 min. 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
Sep 19, 2001, 7:48 PM CDT (00:48 UTC)
Expired
Sep 19, 2001, 9:45 PM CDT
In force
117 min
Issued by
NWS Midland/Odessa, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Upton County, TX

The radar

The Midland/Odessa radar (KMAF), 47 km from the middle of the area, began a volume at 00:48 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

Midland Regional, TX (KMAF), launched 00:00Z, 0.8 hours before the alert went out and 48 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, Midland Regional, TX at 00:00Z on 2001-09-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1025 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, Midland Regional, TX at 00:00Z on 2001-09-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 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
1025 J/kg
Mixed-layer CIN
-53 J/kg
Mixed-layer LCL
2187 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
91 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 KMAF 200050
FFWMAF
TXC461-200245-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
748 PM CDT WED SEP 19 2001

THE NATIONAL WEATHER SERVICE IN MIDLAND-ODESSA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN UPTON COUNTY IN WEST TEXAS

* UNTIL 945 PM CDT

* AT 748 PM CDT...WEATHER SERVICE RADAR INDICATED THUNDERSTORMS
  PRODUCING VERY HEAVY RAINFALL 8 MILES SOUTHWEST OF MIDKIFF...OR
  ABOUT 23 MILES NORTH OF RANKIN...MOVING SOUTHEAST AT 15 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...
  MIDKIFF AND THE INTERSECTION OF SH 329 AND FM 1492

RAINFALL RATES OF 1 TO 3 INCHES PER HOUR CAN BE EXPECTED OVER
NORTHERN UPTON COUNTY.  FLASH FLOODING OF DRAWS...STREAMS...AND
LOW WATER CROSSINGS CAN BE EXPECTED.  

DO NOT DRIVE ACROSS FLOODED ROADWAYS NEVER ATTEMPT TO CROSS 
FLOWING WATER IN A CAR OR ON FOOT.  DO NOT DRIVE AROUND POLICE 
BARRICADES.

LAT...LON 3165 10224 3136 10225 3137 10178 3164 10178

The office that day

Everything else NWS Midland/Odessa, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 19, 7:23 PM CDTSevere Thunderstorm WarningMAFUpton67 min
Sep 19, 9:25 PM CDTSevere Thunderstorm WarningMAFDawson65 min
Sep 20, 4:52 PM CDTSevere Thunderstorm WarningMAFDawson, Gaines53 min

Nearby

Flash Flood Warnings in Texas, 2001Every flash flood 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.