Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 106, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 9, 2021, 6:27 PM CDT for Gillespie County, Llano County, Texas. It was in force for 63 min. 7 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
- May 9, 2021, 6:27 PM CDT (23:27 UTC)
- Expired
- May 9, 2021, 7:30 PM CDT
- In force
- 63 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Hail
- 2.5 in
- Wind
- 70.0 mph
Counties Gillespie County, TX, Llano County, TX
The radar
The Austin/San Antonio radar (KEWX), 109 km from the middle of the area, began a volume at 23:27 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 |
|---|---|---|---|
| May 9, 7:02 PM CDT | HAIL 1.5 | 7 Nnw Enchanted Rock St, TX | HAIL SIZES RANGING FROM QUARTER TO PING PONG SIZE. |
| May 9, 7:05 PM CDT | HAIL 1 | 4 W Enchanted Rock Stat, TX | |
| May 9, 7:17 PM CDT | HAIL 1.75 | 2 Ese Crabapple, TX | |
| May 9, 7:25 PM CDT | HAIL 1.5 | 3 E Crabapple, TX | HAIL SIZES RANGING FROM QUARTER TO PING PONG SIZE. |
| May 9, 7:25 PM CDT | HAIL 1.75 | 2 Wsw Willow City, TX | GOLFBALL SIZE HAIL FALLING FOR 15 MINUTES STARTING AROUND 7:25 PM. |
| May 9, 7:25 PM CDT | HAIL 2.5 | 2 Wsw Willow City, TX | UP TO TENNIS BALL SIZE HAIL JUST SOUTHWEST OF WILLOW CITY. |
| May 9, 7:30 PM CDT | HAIL 0.88 | 4 W Willow City, TX | NICKLE SIZE HAIL FELL AROUND 7:30 WITH PEA SIZE HAIL CONTINUING TO FALL. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 9, 3:01 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 11.5 hours before the alert went out and 251 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
- 1239 J/kg
- Mixed-layer CIN
- -300 J/kg
- Mixed-layer LCL
- 1005 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 225 m²/s²
- 0-3 km storm-relative helicity
- 241 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted.
921
WUUS54 KEWX 092327
SVREWX
TXC171-299-100030-
/O.NEW.KEWX.SV.W.0106.210509T2327Z-210510T0030Z/
BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Austin/San Antonio TX
627 PM CDT Sun May 9 2021
The National Weather Service in Austin San Antonio has issued a
* Severe Thunderstorm Warning for...
Northeastern Gillespie County in south central Texas...
Southern Llano County in south central Texas...
* Until 730 PM CDT.
* At 626 PM CDT, a severe thunderstorm was located over Castell, or
15 miles east of Mason, moving southeast at 35 mph.
HAZARD...Tennis ball size hail and 70 mph wind gusts.
SOURCE...Public.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
considerable tree damage. Wind damage is also likely to
mobile homes, roofs, and outbuildings.
* Locations impacted include...
Castell, Prairie Mountain, Enchanted Rock State Natural Area,
Eckert, Crabapple, Willow City, Oxford and Sunrise Beach Village.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
This is a dangerous storm. Prepare immediately for large destructive
hail capable of producing significant damage. People outside should
move to shelter inside a strong building, and stay away from windows.
&&
LAT...LON 3061 9841 3060 9841 3050 9851 3050 9859
3042 9859 3034 9867 3050 9897 3081 9896
TIME...MOT...LOC 2326Z 303DEG 29KT 3068 9898
HAIL...2.50IN
WIND...70MPH
$$
MORRIS/BF2 follow-up statements
578
WWUS54 KEWX 092347
SVSEWX
Severe Weather Statement
National Weather Service Austin/San Antonio TX
647 PM CDT Sun May 9 2021
TXC171-299-100030-
/O.CON.KEWX.SV.W.0106.000000T0000Z-210510T0030Z/
Gillespie TX-Llano TX-
647 PM CDT Sun May 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR NORTHEASTERN GILLESPIE AND SOUTHERN LLANO COUNTIES...
At 647 PM CDT, a severe thunderstorm was located near Prairie
Mountain, or 13 miles southwest of Llano, moving southeast at 35 mph.
HAZARD...Tennis ball size hail and 70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
considerable tree damage. Wind damage is also likely to
mobile homes, roofs, and outbuildings.
Locations impacted include...
Castell, Prairie Mountain, Enchanted Rock State Natural Area, Eckert,
Crabapple, Willow City, Oxford and Sunrise Beach Village.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
This is a dangerous storm. Prepare immediately for large destructive
hail capable of producing significant damage. People outside should
move to a shelter, inside a strong building and away from windows.
&&
LAT...LON 3063 9848 3060 9841 3050 9851 3050 9859
3042 9859 3034 9867 3050 9897 3081 9896
TIME...MOT...LOC 2347Z 303DEG 29KT 3059 9881
HAIL...2.50IN
WIND...70MPH
$$
MORRIS/BF492
WWUS54 KEWX 100010
SVSEWX
Severe Weather Statement
National Weather Service Austin/San Antonio TX
710 PM CDT Sun May 9 2021
TXC171-299-100030-
/O.CON.KEWX.SV.W.0106.000000T0000Z-210510T0030Z/
Gillespie TX-Llano TX-
710 PM CDT Sun May 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR NORTHEASTERN GILLESPIE AND SOUTHWESTERN LLANO COUNTIES...
At 710 PM CDT, a severe thunderstorm was located near Blowout, or 16
miles southwest of Kingsland, moving southeast at 35 mph.
HAZARD...Two inch hail and 60 mph wind gusts.
SOURCE...Trained weather spotters.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Eckert, Prairie Mountain, Crabapple, Willow City, Oxford and
Enchanted Rock State Natural Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.
&&
LAT...LON 3061 9865 3050 9859 3042 9859 3034 9867
3050 9897 3065 9896
TIME...MOT...LOC 0010Z 303DEG 29KT 3049 9863
HAIL...2.00IN
WIND...60MPH
$$
MORRIS/BFNearby
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.