Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 124, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 15, 2021, 9:01 PM CDT for Val Verde County, Texas. It was in force for 17 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 15, 2021, 9:01 PM CDT (02:01 UTC)
- Expired
- May 15, 2021, 9:18 PM CDT
- In force
- 17 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 50.0 mph
County Val Verde County, TX
The radar
The Laughlin AFB radar (KDFX), 137 km from the middle of the area, began a volume at 02:04 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 (KDRT), launched 00:00Z, 2.0 hours before the alert went out and 88 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
- 1227 J/kg
- Mixed-layer CIN
- -98 J/kg
- Mixed-layer LCL
- 858 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 101 m²/s²
- 0-3 km storm-relative helicity
- 149 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 3.8
The text
As transmitted.
897
WUUS54 KEWX 160201
SVREWX
TXC465-160300-
/O.NEW.KEWX.SV.W.0124.210516T0201Z-210516T0300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Austin/San Antonio TX
901 PM CDT Sat May 15 2021
The National Weather Service in Austin San Antonio has issued a
* Severe Thunderstorm Warning for...
Northwestern Val Verde County in south central Texas...
* Until 1000 PM CDT.
* At 901 PM CDT, a severe thunderstorm was located over Langtry,
moving northeast at 40 mph.
HAZARD...Half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
* Locations impacted include...
Juno and Langtry.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3029 10146 3029 10104 3023 10094 2977 10150
2976 10154 2981 10155 2980 10157 2977 10158
2978 10161 2976 10165 2981 10174
TIME...MOT...LOC 0201Z 217DEG 36KT 2983 10160
HAIL...1.25IN
WIND...<50MPH
$$
RUNYEN1 follow-up statement
792
WWUS54 KEWX 160218
SVSEWX
Severe Weather Statement
National Weather Service Austin/San Antonio TX
918 PM CDT Sat May 15 2021
TXC465-160228-
/O.CAN.KEWX.SV.W.0124.000000T0000Z-210516T0300Z/
Val Verde TX-
918 PM CDT Sat May 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN VAL VERDE COUNTY
IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However small hail is
still possible with this thunderstorm.
LAT...LON 3029 10146 3029 10104 3023 10094 2977 10150
2976 10154 2981 10155 2980 10157 2977 10158
2978 10161 2976 10165 2981 10174
TIME...MOT...LOC 0217Z 217DEG 36KT 2997 10148
$$
RUNYENThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 15, 8:53 PM CDT | Special Weather Statement | EWX | Val Verde | 37 min |
| May 15, 9:22 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 38 min |
| May 16, 5:39 AM CDT | Areal Flood Advisory | EWX | Frio, Zavala | 3 hr |
| May 16, 8:27 AM CDT | Areal Flood Advisory | EWX | Karnes | 3 hr |
| May 16, 11:09 AM CDT | Areal Flood Advisory | EWX | Hays, Travis | 3 hr |
Nearby
Severe Thunderstorm Warnings in Texas, 2021Every severe thunderstorm warning in 2021
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.