Alert archive / Texas / Flash Flood Watches in 2018
Flash Flood Watch 10, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood watch at Oct 23, 2018, 3:09 PM CDT for 18 counties in Texas. It took effect at Oct 24, 2018, 1:00 AM CDT. It was in force for 18 hr.
The area
The counties it named.
The facts
- Issued
- Oct 23, 2018, 3:09 PM CDT (20:09 UTC)
- In effect from
- Oct 24, 2018, 1:00 AM CDT
- Expired
- Oct 24, 2018, 7:00 PM CDT
- In force
- 18 hr
- Issued by
- NWS Austin/San Antonio, TX
- Flood severity
- None
Counties Bandera County, TX, Bexar County, TX, Blanco County, TX, Burnet County, TX, Comal County, TX, Edwards County, TX, Gillespie County, TX, Hays County, TX, Kendall County, TX, Kerr County, TX, Kinney County, TX, Llano County, TX, Medina County, TX, Real County, TX, Travis County, TX, Uvalde County, TX, Val Verde County, TX, Williamson County, TX
The radar
The Austin/San Antonio radar (KEWX), 101 km from the middle of the area, began a volume at 20:11 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
Corpus Christi, TX (KCRP), launched 12:00Z, 8.2 hours before the alert went out and 300 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 786 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 365 m²/s²
- 0-3 km storm-relative helicity
- 386 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Austin/San Antonio, TX wrote its last area forecast discussion before this flash flood watch went out at Oct 23, 12:34 PM CDT, 2 hours 35 minutes earlier.
Area forecast discussion, Oct 23, 12:34 PM CDT, 2 hours 35 minutes before
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</html>Hazardous weather outlook, Oct 23, 1:58 PM CDT, 1 hour 11 minutes before
Hazardous Weather Outlook National Weather Service Austin/San Antonio TX 158 PM CDT Tue Oct 23 2018 TXZ171>173-183>194-202>209-217>225-228-241200- Llano-Burnet-Williamson-Val Verde-Edwards-Real-Kerr-Bandera- Gillespie-Kendall-Blanco-Hays-Travis-Bastrop-Lee-Kinney-Uvalde- Medina-Bexar-Comal-Guadalupe-Caldwell-Fayette-Maverick-Zavala- Frio-Atascosa-Wilson-Karnes-Gonzales-De Witt-Lavaca-Dimmit- 158 PM CDT Tue Oct 23 2018 This Hazardous Weather Outlook is for South-Central Texas.. .DAY ONE...This Afternoon And Tonight. Expect light rain to re-develop from southwest to northeast across the area tonight. Rainfall amounts of up to an inch are possible, mainly across the Rio Grande Plains, Edwards Plateau, and Hill Country. This rain on saturated soils could lead to renewed river flooding and some minor flash flooding. The Colorado, Llano, Nueces, Frio, and Rio Grande river basins are the areas most at risk from additional rainfall. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. An upper level trough and the remnants of Pacific Hurricane Willa will bring periods of moderate rainfall on Wednesday. Rainfall amounts of 1 to 3 inches are possible, with a few spots getting up to 4 inches. Look for renewed river flooding and some minor flash flooding. The Colorado, Llano, Nueces, Frio, and Rio Grande river basins are the areas most at risk from additional rainfall. The rain will end Thursday, followed by dry and mild weather into the middle of next week. However, rivers and lakes will remain at elevated levels from recent rains. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated.
Nearby
Flash Flood Watches in Texas, 2018Every flash flood watch in 2018
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.