Alert archive / Texas / Flash Flood Warnings in 2018
Flash Flood Warning 28, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Sep 8, 2018, 6:41 AM CDT for 4 counties in Texas. It was in force for 3 hr. 2 reports 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 8, 2018, 6:41 AM CDT (11:41 UTC)
- Expired
- Sep 8, 2018, 9:45 AM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Flood severity
- None
Counties Bandera County, TX, Edwards County, TX, Real County, TX, Uvalde County, TX
The radar
The Laughlin AFB radar (KDFX), 68 km from the middle of the area, began a volume at 11:45 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 8, 8:30 AM CDT | FLASH FLOOD | Montell, TX | WATER OVER THE ROADWAY OF HIGHWAY 55 NEAR MONTELL DUE TO FLOODING ON THE NUECES RIVER. |
| Sep 8, 9:52 AM CDT | FLASH FLOOD | 3 N Concan, TX | MULTIPLE LOW WATER CROSSINGS CLOSED ALONG RIVER ROAD NEAR CONCAN DUE TO FLOODING ON THE FRIO RIVER. |
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, 11.7 hours before the alert went out and 113 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
- 120 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 1146 m above ground
- 0-6 km bulk shear
- 2 kt
- 0-1 km storm-relative helicity
- -6 m²/s²
- 0-3 km storm-relative helicity
- -6 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
372 WGUS54 KEWX 081141 FFWEWX TXC019-137-385-463-081445- /O.NEW.KEWX.FF.W.0028.180908T1141Z-180908T1445Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Austin/San Antonio TX 641 AM CDT SAT SEP 8 2018 The National Weather Service in Austin San Antonio has issued a * Flash Flood Warning for... West central Bandera County in south central Texas... Northern Uvalde County in south central Texas... South central Edwards County in south central Texas... Southern Real County in south central Texas... * Until 945 AM CDT * At 640 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Up to two inches of rain have already fallen. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Leakey, Vanderpool, Camp Wood, Laguna, Barksdale, Tuff, Rio Frio, Concan, Montell, Garner State Park, Reagan Wells, Utopia and Lost Maples State Natural Area. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route. Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks. && LAT...LON 2982 9945 2936 9944 2934 10011 2981 10011 $$ PLATT
1 follow-up statement
907 WGUS74 KEWX 081409 FFSEWX Flash Flood Statement National Weather Service Austin/San Antonio TX 909 AM CDT SAT SEP 8 2018 TXC019-137-385-463-081445- /O.CON.KEWX.FF.W.0028.000000T0000Z-180908T1445Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Bandera TX-Uvalde TX-Edwards TX-Real TX- 909 AM CDT SAT SEP 8 2018 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 AM CDT FOR WEST CENTRAL BANDERA...NORTHERN UVALDE...SOUTH CENTRAL EDWARDS AND SOUTHERN REAL COUNTIES... At 906 AM CDT, local law enforcement reported flash flooding on social media at Avant Crossing on River Road near Concan. Up to three inches of rain have already fallen. Flash flooding is occurring. Some locations that will experience flooding include... Leakey, Vanderpool, Camp Wood, Laguna, Barksdale, Tuff, Rio Frio, Concan, Montell, Garner State Park, Reagan Wells, Utopia and Lost Maples State Natural Area. Additional rainfall amounts of an inch are possible in the warned area. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route. Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks. && LAT...LON 2982 9945 2936 9944 2934 10011 2981 10011 $$ HUFFMAN
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 11:59 PM CDT | Areal Flood Advisory | EWX | Bexar, Medina | 3 hr |
| Sep 8, 12:12 AM CDT | Areal Flood Advisory | EWX | Burnet, Travis, Williamson | 3 hr |
| Sep 8, 3:35 AM CDT | Areal Flood Advisory | EWX | Val Verde | 3 hr |
| Sep 8, 4:09 AM CDT | Flash Flood Watch | EWX | Atascosa, Bandera, Bastrop, Bexar, Blanco, Burnet and 27 more | 59 hr |
| Sep 8, 5:00 AM CDT | Areal Flood Advisory | EWX | Bandera, Edwards, Real, Uvalde | 3 hr |
| Sep 8, 5:56 AM CDT | Areal Flood Advisory | EWX | Edwards, Kinney, Maverick | 3 hr |
| Sep 8, 8:35 AM CDT | River Flood Warning | EWX | Uvalde | 22 hr |
| Sep 8, 8:35 AM CDT | River Flood Warning | EWX | Uvalde | 18 hr |
| Sep 8, 8:35 AM CDT | River Flood Warning | EWX | Uvalde | 24 hr |
| Sep 8, 8:40 AM CDT | Areal Flood Advisory | EWX | Kinney, Maverick, Uvalde, Zavala | 3 hr |
| Sep 8, 8:56 AM CDT | River Flood Warning | EWX | Val Verde | 25 hr |
| Sep 8, 9:28 AM CDT | Flash Flood Warning | EWX | Bandera, Dimmit, Kinney, Maverick, Real, Uvalde and 1 more | 3 hr |
| Sep 8, 10:55 AM CDT | Areal Flood Advisory | EWX | Dimmit, Maverick | 3 hr |
| Sep 8, 12:06 PM CDT | Areal Flood Advisory | EWX | Dimmit | 114 min |
| Sep 8, 12:29 PM CDT | Areal Flood Warning | EWX | Bandera, Dimmit, Kinney, Maverick, Real, Uvalde and 1 more | 3 hr |
| Sep 8, 3:09 PM CDT | River Flood Warning | EWX | Uvalde | 40 hr |
| Sep 8, 5:13 PM CDT | Special Weather Statement | EWX | Caldwell | 32 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.