Alert archive / Texas / Flash Flood Warnings in 2018
Flash Flood Warning 27, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Sep 6, 2018, 4:48 AM CDT for Val Verde 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
- Sep 6, 2018, 4:48 AM CDT (09:48 UTC)
- Expired
- Sep 6, 2018, 7:45 AM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Flood severity
- None
County Val Verde County, TX
The radar
The Laughlin AFB radar (KDFX), 107 km from the middle of the area, began a volume at 09:48 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
Del Rio, TX (KDLF), launched 00:00Z, 9.8 hours before the alert went out and 54 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
- 1046 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 1298 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 29 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
826
WGUS54 KEWX 060948
FFWEWX
TXC465-061245-
/O.NEW.KEWX.FF.W.0027.180906T0948Z-180906T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
448 AM CDT THU SEP 6 2018
The National Weather Service in Austin San Antonio has issued a
* Flash Flood Warning for...
Central Val Verde County in south central Texas...
* Until 745 AM CDT
* At 443 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across portions of Val Verde county north of Del Rio
along and west of the Devils River to near Juno to near Langtry.
The heaviest rains have fallen in and around the Comstock area
near the intersections of US highway 90, state highway 163 and
county road 1024. Up to three inches of rain have already fallen.
Flash flooding is expected to begin shortly.
* Some locations that will experience flooding include...
Comstock, Langtry, Amistad Village, Amistad Recreation Area -
Governors Landing, Amistad Recreation Area - Diablo East, Amistad
Recreation Area - Black Brush Point, Amistad Acres, Seminole Canyon
State Park, Shumla, Box Canyon, Amistad Recreation Area - Long
Point, Pafford Crossing, Amistad Recreation Area - Rock Quarry
Campground, Devils River SNA - Big Satan, Bakers Crossing, Amistad
Recreation Area - Pecos River Boat Ramp, Amistad Recreation Area -
Rough Canyon, Amistad Recreation Area - Spur 406 Campground, Salem
Point and Devils River SNA - Del Norte.
Additional rainfall amounts of 2 to 4 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.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.
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.
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 2988 10162 3007 10119 2981 10085 2965 10096
2936 10100 2946 10106 2948 10115 2952 10118
2952 10125 2962 10125 2963 10126 2958 10129
2957 10129 2965 10130 2965 10136 2975 10142
2977 10140 2975 10144 2979 10147 2977 10152
$$
CP2 follow-up statements
879
WGUS74 KEWX 061109
FFSEWX
Flash Flood Statement
National Weather Service Austin/San Antonio TX
609 AM CDT THU SEP 6 2018
TXC465-061245-
/O.CON.KEWX.FF.W.0027.000000T0000Z-180906T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Val Verde TX-
609 AM CDT THU SEP 6 2018
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 AM CDT FOR
CENTRAL VAL VERDE COUNTY...
At 602 AM CDT, Doppler radar indicated thunderstorms producing heavy
rain have shifted north of US Highway 90 and east of State Highway
163 to along the Devils River watershed south of Juno with light
rain elsewhere across the warned area. Radar has estimated up to 6
inches of rain have already fallen with the highest amounts near
Comstock. Flash flooding will continue.
Some locations that will experience flooding include...
Comstock, Langtry, Amistad Village, Amistad Recreation Area -
Governors Landing, Amistad Recreation Area - Diablo East, Amistad
Recreation Area - Black Brush Point, Amistad Acres, Seminole Canyon
State Park, Shumla, Box Canyon, Amistad Recreation Area - Long Point,
Pafford Crossing, Amistad Recreation Area - Rock Quarry Campground,
Devils River SNA - Big Satan, Bakers Crossing, Amistad Recreation
Area - Pecos River Boat Ramp, Amistad Recreation Area - Rough Canyon,
Amistad Recreation Area - Spur 406 Campground, Salem Point and Devils
River SNA - Del Norte.
Additional rainfall amounts of 1 to 3 inches are possible mainly
along the Devils River watershed south of Juno.
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.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.
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.
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 2988 10162 3007 10119 2981 10085 2965 10096
2936 10100 2946 10106 2948 10115 2952 10118
2952 10125 2962 10125 2963 10126 2958 10129
2957 10129 2965 10130 2965 10136 2975 10142
2977 10140 2975 10144 2979 10147 2977 10152
$$
CP148
WGUS74 KEWX 061247
FFSEWX
Flash Flood Statement
National Weather Service Austin/San Antonio TX
747 AM CDT THU SEP 6 2018
TXC465-061256-
/O.EXP.KEWX.FF.W.0027.000000T0000Z-180906T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Val Verde TX-
747 AM CDT THU SEP 6 2018
...THE FLASH FLOOD WARNING FOR CENTRAL VAL VERDE COUNTY HAS
EXPIRED...
The heavy rain has ended. Flash Flooding is no longer expected to
pose a threat, but minor flooding will continue. Please continue to
heed any remaining road closures.
LAT...LON 2988 10162 3007 10119 2981 10085 2965 10096
2936 10100 2946 10106 2948 10115 2952 10118
2952 10125 2962 10125 2963 10126 2958 10129
2957 10129 2965 10130 2965 10136 2975 10142
2977 10140 2975 10144 2979 10147 2977 10152
$$
HAMPSHIREThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 8:40 PM CDT | Areal Flood Advisory | EWX | Uvalde | 3 hr |
| Sep 5, 9:39 PM CDT | Areal Flood Advisory | EWX | Medina | 3 hr |
| Sep 6, 3:58 AM CDT | Areal Flood Advisory | EWX | Val Verde | 3 hr |
| Sep 6, 5:59 AM CDT | Areal Flood Advisory | EWX | Edwards, Kinney, Val Verde | 3 hr |
| Sep 6, 7:57 AM CDT | River Flood Warning | EWX | Val Verde | 12 hr |
| Sep 6, 10:54 AM CDT | Areal Flood Advisory | EWX | Kinney, Maverick, Val Verde | 3 hr |
| Sep 6, 4:03 PM CDT | Areal Flood Advisory | EWX | Bexar | 113 min |
| Sep 6, 4:34 PM CDT | Areal Flood Advisory | EWX | Kerr | 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.