Alert archive / Texas / Flash Flood Warnings in 2018
Flash Flood Warning 38, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Sep 22, 2018, 1:01 AM CDT for Burnet County, Travis County, Williamson County, Texas. It was in force for 6 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Sep 22, 2018, 1:01 AM CDT (06:01 UTC)
- Expired
- Sep 22, 2018, 7:00 AM CDT
- In force
- 6 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Flood severity
- None
Counties Burnet County, TX, Travis County, TX, Williamson County, TX
The radar
The Ft Hood radar (KGRK), 64 km from the middle of the area, began a volume at 06:01 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 was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 22, 2:26 AM CDT | FLASH FLOOD | 3 Wsw Bertram, TX | THE BURNET COUNTY SHERIFFS OFFICE REPORT SEVERAL LOW WATER CROSSINGS FLOODED ALONG COUNTY ROAD 330 IN SOUTHEAST BURNET COUNTY. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Del Rio, TX (KDLF), launched 00:00Z, 6.0 hours before the alert went out and 305 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
- 472 J/kg
- Mixed-layer CIN
- -94 J/kg
- Mixed-layer LCL
- 1293 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
539 WGUS54 KEWX 220601 FFWEWX TXC053-453-491-220900- /O.NEW.KEWX.FF.W.0038.180922T0601Z-180922T0900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Austin/San Antonio TX 101 AM CDT SAT SEP 22 2018 The National Weather Service in Austin San Antonio has issued a * Flash Flood Warning for... Western Williamson County in south central Texas... Northwestern Travis County in south central Texas... Southern Burnet County in south central Texas... * Until 400 AM CDT * At 1257 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. A quick 1 to 3 inches of rainfall has occurred. Additional rainfall could result in pockets in excess of 4 inches. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Burnet, Marble Falls, Bertram, Leander, Granite Shoals, Meadowlakes, Liberty Hill, Longhorn Cavern State Park, Smithwick, Oatmeal, Cottonwood Shores and Seward Junction. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. && LAT...LON 3079 9786 3057 9783 3054 9834 3070 9836 $$ RUNYEN
2 follow-up statements
452 WGUS74 KEWX 220728 FFSEWX Flash Flood Statement National Weather Service Austin/San Antonio TX 228 AM CDT SAT SEP 22 2018 TXC053-453-491-220900- /O.CON.KEWX.FF.W.0038.000000T0000Z-180922T0900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Williamson TX-Travis TX-Burnet TX- 228 AM CDT SAT SEP 22 2018 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 400 AM CDT FOR WEST CENTRAL WILLIAMSON...NORTHWESTERN TRAVIS AND SOUTHERN BURNET COUNTIES... At 224 AM CDT, local law enforcement reported flash flooding of low water crossings occurring in the southeast portion of Burnet county. Doppler radar estimates a widespread 1 to 3 inches of rainfall has occurred across the warned area, with isolated pocket near 6 inches southwest of Liberty Hill. Flash flooding is already occurring. Some locations that will experience flooding include... Burnet, Marble Falls, Bertram, Leander, Granite Shoals, Meadowlakes, Liberty Hill, Longhorn Cavern State Park, Smithwick, Oatmeal, Cottonwood Shores and Seward Junction. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. && LAT...LON 3079 9786 3057 9783 3054 9834 3070 9836 $$ RUNYEN
543 WGUS54 KEWX 220854 FFWEWX TXC053-453-491-221200- /O.EXT.KEWX.FF.W.0038.000000T0000Z-180922T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Austin/San Antonio TX 354 AM CDT SAT SEP 22 2018 The National Weather Service in Austin San Antonio has extended the * Flash Flood Warning for... West central Williamson County in south central Texas... Northwestern Travis County in south central Texas... Southern Burnet County in south central Texas... * Until 700 AM CDT * At 353 AM CDT, local law enforcement reported flash flooding of low water crossings occurring in the southeast portion of Burnet county. Doppler radar estimates a widespread 1 to 3 inches of rainfall has occurred across the warned area, with isolated pocket near 6 inches southwest of Liberty Hill. Flash flooding is already occurring. * Some locations that will experience flooding include... Burnet, Marble Falls, Bertram, Leander, Granite Shoals, Meadowlakes, Liberty Hill, Longhorn Cavern State Park, Smithwick, Oatmeal, Cottonwood Shores and Seward Junction. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. && LAT...LON 3079 9786 3057 9783 3054 9834 3070 9836 $$ RUNYEN
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 21, 7:04 PM CDT | Special Weather Statement | EWX | Lee | 41 min |
| Sep 21, 9:39 PM CDT | Special Weather Statement | EWX | Lee | 51 min |
| Sep 21, 10:04 PM CDT | Areal Flood Advisory | EWX | Lee | 116 min |
| Sep 21, 10:50 PM CDT | Areal Flood Advisory | EWX | Lee, Travis, Williamson | 3 hr |
| Sep 21, 11:24 PM CDT | Special Weather Statement | EWX | Williamson | 51 min |
| Sep 21, 11:37 PM CDT | Flash Flood Warning | EWX | Williamson | 5 hr |
| Sep 22, 12:00 AM CDT | Areal Flood Advisory | EWX | Bandera, Kendall, Kerr | 3 hr |
| Sep 22, 12:28 AM CDT | Flash Flood Warning | EWX | Bandera | 3 hr |
| Sep 22, 1:29 AM CDT | Areal Flood Advisory | EWX | Uvalde | 3 hr |
| Sep 22, 1:41 AM CDT | Areal Flood Advisory | EWX | Medina | 3 hr |
| Sep 22, 1:53 AM CDT | Special Weather Statement | EWX | Williamson | 37 min |
| Sep 22, 2:14 AM CDT | Flash Flood Warning | EWX | Bandera, Medina | 3 hr |
| Sep 22, 2:45 AM CDT | River Flood Warning | EWX | Williamson | 11 hr |
| Sep 22, 3:02 AM CDT | Flash Flood Warning | EWX | Bexar | 3 hr |
| Sep 22, 3:12 AM CDT | Flash Flood Warning | EWX | Medina | 3 hr |
| Sep 22, 3:28 AM CDT | Special Weather Statement | EWX | Medina | 32 min |
| Sep 22, 4:05 AM CDT | Areal Flood Advisory | EWX | Atascosa, Frio | 3 hr |
| Sep 22, 4:24 AM CDT | Flash Flood Warning | EWX | Bexar | 3 hr |
| Sep 22, 4:28 AM CDT | Flash Flood Warning | EWX | Williamson | 2 hr |
| Sep 22, 4:33 AM CDT | Areal Flood Advisory | EWX | Comal, Hays | 3 hr |
| Sep 22, 5:11 AM CDT | River Flood Warning | EWX | Bandera | 4 hr |
| Sep 22, 5:22 AM CDT | Areal Flood Advisory | EWX | Travis, Williamson | 113 min |
| Sep 22, 6:04 AM CDT | Flash Flood Warning | EWX | Travis, Williamson | 3 hr |
| Sep 22, 6:21 AM CDT | River Flood Warning | EWX | Bexar | 9 hr |
| Sep 22, 6:37 AM CDT | Areal Flood Advisory | EWX | Bandera, Bexar, Medina | 113 min |
| Sep 22, 8:48 AM CDT | River Flood Warning | EWX | Bexar | 36 hr |
| Sep 22, 8:48 AM CDT | River Flood Warning | EWX | Medina | 26 hr |
| Sep 22, 8:48 AM CDT | River Flood Warning | EWX | Bexar | 55 hr |
| Sep 22, 9:05 AM CDT | River Flood Warning | EWX | Frio | 3 days |
| Sep 22, 9:16 AM CDT | Areal Flood Advisory | EWX | Williamson | 3 hr |
| Sep 22, 2:30 PM CDT | River Flood Warning | EWX | Val Verde | 22 hr |
| Sep 22, 2:35 PM CDT | River Flood Warning | EWX | Bexar, Wilson | 24 hr |
| Sep 22, 6:59 PM CDT | River Flood Warning | EWX | Val Verde | 22 hr |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.