Alert archive / Texas / Flash Flood Warnings in 2017

Flash Flood Warning 21, NWS Midland/Odessa, TX

July 22, 2017Upton County, Texas

NWS Midland/Odessa, TX issued this flash flood warning at Jul 22, 2017, 7:48 PM CDT for Upton 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 as issued.

The facts

Issued
Jul 22, 2017, 7:48 PM CDT (00:48 UTC)
Expired
Jul 22, 2017, 10:45 PM CDT
In force
3 hr
Issued by
NWS Midland/Odessa, TX
Area
Storm-based polygon
Flood severity
None

County Upton County, TX

The radar

The Midland/Odessa radar (KMAF), 71 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

Del Rio, TX (KDLF), launched 00:00Z, 0.8 hours before the alert went out and 249 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, Del Rio, TX at 00:00Z on 2017-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1090 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 00:00Z on 2017-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -7 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
1090 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
2461 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
-7 m²/s²
0-3 km storm-relative helicity
44 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

995 
WGUS54 KMAF 230048
FFWMAF
TXC461-230345-
/O.NEW.KMAF.FF.W.0021.170723T0048Z-170723T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Midland/Odessa TX
748 PM CDT SAT JUL 22 2017

The National Weather Service in Midland has issued a

* Flash Flood Warning for...
  Upton County in western Texas...

* Until 1045 PM CDT

* At 746 PM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area near Rankin. Radar estimates 
  that up to two inches of rain have already fallen. Flash flooding 
  is expected to begin shortly.

* Some locations that will experience flooding include...
  McCamey, Rankin, Upton County Airport, King Mountain and 
  Highway 67 and 329 near Rankin.. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3109 10230 3163 10231 3163 10196 3109 10180

$$

49
1 follow-up statement
982 
WGUS74 KMAF 230203
FFSMAF

Flash Flood Statement
National Weather Service Midland/Odessa TX
903 PM CDT SAT JUL 22 2017

TXC461-230345-
/O.CON.KMAF.FF.W.0021.000000T0000Z-170723T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Upton TX-
903 PM CDT SAT JUL 22 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT FOR
UPTON COUNTY...

At 859 PM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area in southwest Upton County. Radar 
estimates up to three inches of rain have fallen along highways 329 
and 67 near Rankin. Although no flooding has been reported there 
likely some flooded roadways or low water crossings.

Some locations that will experience flooding include...
Rankin area, Upton County Airport and King Mountain. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown. Stay away or be swept away. 

&&

LAT...LON 3109 10230 3163 10231 3163 10196 3109 10180

$$

49

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 22, 7:10 PM CDTFlash Flood WarningMAFCrane3 hr
Jul 22, 9:49 PM CDTSpecial Weather StatementMAFJeff Davis56 min
Jul 23, 7:41 AM CDTAreal Flood AdvisoryMAFCrane, Pecos, Upton3 hr
Jul 23, 9:23 AM CDTAreal Flood AdvisoryMAFEctor3 hr
Jul 23, 1:28 PM CDTAreal Flood AdvisoryMAFBrewster, Pecos, Terrell3 hr
Jul 23, 1:49 PM CDTFlash Flood WarningMAFBrewster, Pecos, Terrell3 hr
Jul 23, 3:56 PM CDTAreal Flood AdvisoryMAFPecos, Terrell2 hr
Jul 23, 4:18 PM CDTSpecial Weather StatementMAFPecos42 min
Jul 23, 4:42 PM CDTSpecial Weather StatementMAFJeff Davis48 min
Jul 23, 4:52 PM CDTAreal Flood AdvisoryMAFJeff Davis3 hr
Jul 23, 5:48 PM CDTAreal Flood AdvisoryMAFCrane, Pecos, Upton3 hr

Nearby

Flash Flood Warnings in Texas, 2017Every flash flood warning in 2017

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.