Alert archive / Texas / Flash Flood Warnings in 2018
Flash Flood Warning 18, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Sep 2, 2018, 8:41 PM CDT for Bandera County, Texas. It was in force for 2 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 2, 2018, 8:41 PM CDT (01:41 UTC)
- Expired
- Sep 2, 2018, 10:45 PM CDT
- In force
- 2 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Flood severity
- None
County Bandera County, TX
The radar
The Laughlin AFB radar (KDFX), 102 km from the middle of the area, began a volume at 01:42 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 2, 9:28 PM CDT | HEAVY RAIN 3.5 | 5 E Vanderpool, TX | 3.5 INCHES OF RAIN FELL IN A SPAN OF ABOUT 2 HOURS FROM 7 PM TO 9 PM. |
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, 1.7 hours before the alert went out and 146 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
- 845 J/kg
- Mixed-layer CIN
- -87 J/kg
- Mixed-layer LCL
- 1709 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
475 WGUS54 KEWX 030141 FFWEWX TXC019-030345- /O.NEW.KEWX.FF.W.0018.180903T0141Z-180903T0345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Austin/San Antonio TX 841 PM CDT SUN SEP 2 2018 The National Weather Service in Austin San Antonio has issued a * Flash Flood Warning for... Western Bandera County in south central Texas... * Until 1045 PM CDT * At 840 PM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Up to three inches of rain has already fallen, with another 1 to 2 inches possible. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Vanderpool and Lost Maples State Natural Area. LAT...LON 2990 9929 2963 9929 2963 9960 2991 9960 $$ BMW
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 8:12 PM CDT | Special Weather Statement | EWX | Bandera | 33 min |
| Sep 2, 8:15 PM CDT | Areal Flood Advisory | EWX | Bandera | 2 hr |
| Sep 2, 8:44 PM CDT | Areal Flood Advisory | EWX | Uvalde | 2 hr |
| Sep 2, 8:51 PM CDT | Special Weather Statement | EWX | Uvalde | 54 min |
| Sep 2, 9:43 PM CDT | Special Weather Statement | EWX | Frio | 32 min |
| Sep 2, 10:11 PM CDT | Areal Flood Advisory | EWX | Frio, Medina | 2 hr |
| Sep 2, 11:33 PM CDT | Areal Flood Advisory | EWX | Bandera, Kerr | 117 min |
| Sep 3, 2:13 AM CDT | Areal Flood Advisory | EWX | Val Verde | 3 hr |
| Sep 3, 3:49 AM CDT | Special Weather Statement | EWX | Atascosa | 41 min |
| Sep 3, 5:02 AM CDT | Areal Flood Advisory | EWX | Medina, Uvalde | 3 hr |
| Sep 3, 6:34 AM CDT | Flash Flood Warning | EWX | Medina, Uvalde | 3 hr |
| Sep 3, 3:44 PM CDT | Areal Flood Advisory | EWX | Williamson | 3 hr |
| Sep 3, 5:58 PM CDT | Areal Flood Advisory | EWX | Hays | 3 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.