Alert archive / Texas / Flash Flood Watches in 2018

Flash Flood Watch 11, NWS Austin/San Antonio, TX

December 6, 201822 counties in Texas

NWS Austin/San Antonio, TX issued this flash flood watch at Dec 6, 2018, 4:49 AM CST for 22 counties in Texas. It took effect at Dec 7, 2018, 12:00 PM CST. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued
Dec 6, 2018, 4:49 AM CST (10:49 UTC)
In effect from
Dec 7, 2018, 12:00 PM CST
Expired
Dec 8, 2018, 3:09 AM CST
In force
15 hr
Issued by
NWS Austin/San Antonio, TX
Flood severity
None
All 22 counties

Atascosa County, TX, Bastrop County, TX, Bexar County, TX, Blanco County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, DeWitt County, TX, Fayette County, TX, Frio County, TX, Gonzales County, TX, Guadalupe County, TX, Hays County, TX, Karnes County, TX, Kendall County, TX, Lavaca County, TX, Lee County, TX, Llano County, TX, Medina County, TX, Travis County, TX, Williamson County, TX, Wilson County, TX

The radar

The Austin/San Antonio radar (KEWX), 9 km from the middle of the area, began a volume at 10:51 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.

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 Dec 6, 4:26 AM CST, 23 minutes earlier.

Area forecast discussion, Dec 6, 4:26 AM CST, 23 minutes before
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Hazardous weather outlook, Dec 6, 4:02 AM CST, 47 minutes before
Hazardous Weather Outlook
National Weather Service Austin/San Antonio TX
402 AM CST Thu Dec 6 2018

TXZ171>173-183>194-202>209-217>225-228-071015-
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-
402 AM CST Thu Dec 6 2018

This Hazardous Weather Outlook is for South-Central Texas..

.DAY ONE...Today And Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

A cold front and potent upper level disturbance will bring widespread
showers and a chance of thunderstorms to the area Thursday night
through early Saturday morning. Locally heavy rainfall will be
possible, potentially leading to flooding. Between 3 and 5 inches of
rainfall are forecast over the eastern Hill Country and along the
I-35 corridor, and between 4 and 6 inches with locally higher
amounts east of I-35 and I-37. A Flash Flood Watch has been issued
for these areas, in effect from Friday afternoon through Saturday
morning. Flooding of creeks, smaller tributaries, low water
crossings, and urban areas that are normally subject to flooding
will be possible.

In addition, there is a marginal risk some storms across far
southeastern areas could become strong to severe Friday afternoon
and evening.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report rainfall measurements.

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 6, 9:23 AM CSTRiver Flood WarningEWXCaldwell, Gonzales4 days
Dec 6, 9:23 AM CSTRiver Flood WarningEWXCaldwell, Gonzales3 days
Dec 6, 9:23 AM CSTRiver Flood WarningEWXGonzales5 days
Dec 6, 9:23 AM CSTRiver Flood WarningEWXDeWitt53 hr
Dec 6, 9:23 AM CSTRiver Flood WarningEWXDeWitt5 days
Dec 6, 9:23 AM CSTRiver Flood WarningEWXKerr64 hr
Dec 6, 9:37 AM CSTRiver Flood WarningEWXBexar3 days
Dec 6, 9:37 AM CSTRiver Flood WarningEWXBexar4 days
Dec 6, 9:37 AM CSTRiver Flood WarningEWXBexar, Wilson4 days
Dec 6, 9:37 AM CSTRiver Flood WarningEWXKarnes, Wilson65 hr
Dec 6, 9:43 AM CSTRiver Flood WarningEWXWilliamson35 hr
Dec 6, 9:51 AM CSTRiver Flood WarningEWXTravis61 hr
Dec 6, 9:51 AM CSTRiver Flood WarningEWXBastrop4 days
Dec 6, 9:51 AM CSTRiver Flood WarningEWXBastrop, Fayette4 days
Dec 6, 9:51 AM CSTRiver Flood WarningEWXFayette5 days
Dec 6, 9:51 AM CSTRiver Flood WarningEWXBlanco24 hr
Dec 6, 2:03 PM CSTRiver Flood WarningEWXCaldwell, Hays24 hr
Dec 6, 2:27 PM CSTRiver Flood WarningEWXBexar58 hr
Dec 6, 2:27 PM CSTRiver Flood WarningEWXBexar3 days
Dec 6, 2:27 PM CSTRiver Flood WarningEWXKarnes4 days
Dec 6, 2:27 PM CSTRiver Flood WarningEWXGoliad, Karnes4 days
Dec 6, 2:27 PM CSTRiver Flood WarningEWXBexar, Guadalupe56 hr
Dec 6, 2:27 PM CSTRiver Flood WarningEWXKarnes, Wilson4 days
Dec 6, 2:27 PM CSTRiver Flood WarningEWXKarnes4 days
Dec 6, 2:57 PM CSTRiver Flood WarningEWXFrio18 hr

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; radar from the NEXRAD Level II archive.