Alert archive / Texas / Flash Flood Warnings in 2018

Flash Flood Warning 9, NWS Austin/San Antonio, TX

June 4, 2018Burnet County, Llano County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 4, 2018, 1:06 AM CDT for Burnet County, Llano 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
Jun 4, 2018, 1:06 AM CDT (06:06 UTC)
Expired
Jun 4, 2018, 4:00 AM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon
Flood severity
None

Counties Burnet County, TX, Llano County, TX

The radar

The Ft Hood radar (KGRK), 84 km from the middle of the area, began a volume at 06:06 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

Fort Worth, TX (KFWD), launched 00:00Z, 6.1 hours before the alert went out and 242 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, Fort Worth, TX at 00:00Z on 2018-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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, Fort Worth, TX at 00:00Z on 2018-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -9 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2210 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-9 m²/s²
0-3 km storm-relative helicity
79 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

865 
WGUS54 KEWX 040606
FFWEWX
TXC053-299-040900-
/O.NEW.KEWX.FF.W.0009.180604T0606Z-180604T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
106 AM CDT MON JUN 4 2018

The National Weather Service in Austin San Antonio has issued a

* Flash Flood Warning for...
  Northeastern Llano County in south central Texas...
  Northwestern Burnet County in south central Texas...

* Until 400 AM CDT

* At 106 AM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to three inches of rain have 
  already fallen near the town of Burnet. Flash flooding is expected 
  to begin shortly.

* Some locations that will experience flooding include...
  Burnet, Marble Falls, Kingsland, Bertram, Buchanan Dam, Granite
  Shoals, Meadowlakes, Buchanan Lake Village, Inks Lake State Park,
  Bluffton, Oatmeal, Lake Victor, Sunnylane, Longhorn Cavern State
  Park, Joppa, Tow and Shady Grove.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 3079 9796 3067 9803 3056 9828 3071 9852
      3092 9852 3092 9842 3094 9841 3098 9817

$$

MO

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 3, 10:59 PM CDTSpecial Weather StatementEWXBastrop, Fayette, Lee61 min
Jun 3, 11:22 PM CDTSevere Thunderstorm WarningEWXWilliamson68 min
Jun 3, 11:39 PM CDTSpecial Weather StatementEWXTravis36 min
Jun 4, 12:04 AM CDTSpecial Weather StatementEWXWilliamson56 min
Jun 4, 12:07 AM CDTSevere Thunderstorm WarningEWXTravis, Williamson53 min
Jun 4, 12:19 AM CDTSpecial Weather StatementEWXBurnet, Llano41 min
Jun 4, 12:27 AM CDTAreal Flood AdvisoryEWXBurnet, Travis, Williamson4 hr
Jun 4, 12:51 AM CDTSpecial Weather StatementEWXTravis54 min
Jun 4, 1:03 AM CDTFlash Flood WarningEWXTravis, Williamson3 hr
Jun 4, 1:17 AM CDTSpecial Weather StatementEWXBlanco43 min
Jun 4, 1:47 AM CDTAreal Flood AdvisoryEWXBlanco, Burnet, Llano, Travis3 hr
Jun 4, 2:05 AM CDTSpecial Weather StatementEWXBlanco55 min
Jun 4, 2:10 AM CDTSevere Thunderstorm WarningEWXBlanco35 min
Jun 4, 2:36 AM CDTFlash Flood WarningEWXBlanco, Burnet3 hr
Jun 4, 3:56 AM CDTFlash Flood WarningEWXBlanco, Burnet, Llano3 hr
Jun 4, 5:08 AM CDTSpecial Weather StatementEWXEdwards52 min
Jun 4, 5:33 AM CDTAreal Flood AdvisoryEWXBlanco, Burnet, Llano3 hr
Jun 4, 5:39 AM CDTSpecial Weather StatementEWXKerr51 min

Nearby

Flash Flood Warnings in Texas, 2018Every flash flood warning 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.