Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 37, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 15, 2021, 9:04 AM CDT for Edwards County, Texas. It was in force for 24 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
- Apr 15, 2021, 9:04 AM CDT (14:04 UTC)
- Expired
- Apr 15, 2021, 9:28 AM CDT
- In force
- 24 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Edwards County, TX
The radar
The Laughlin AFB radar (KDFX), 106 km from the middle of the area, began a volume at 14:06 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 15, 8:36 AM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 2.1 hours before the alert went out and 107 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
- 2593 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 634 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 169 m²/s²
- 0-3 km storm-relative helicity
- 338 m²/s²
- Significant tornado parameter
- 4.6
- Supercell composite
- 21.4
The text
As transmitted.
729
WUUS54 KEWX 151404
SVREWX
TXC137-151500-
/O.NEW.KEWX.SV.W.0037.210415T1404Z-210415T1500Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Austin/San Antonio TX
904 AM CDT Thu Apr 15 2021
The National Weather Service in Austin San Antonio has issued a
* Severe Thunderstorm Warning for...
North central Edwards County in south central Texas...
* Until 1000 AM CDT.
* At 904 AM CDT, a severe thunderstorm was located 17 miles northwest
of Rocksprings, moving northeast at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* This severe thunderstorm will remain over mainly rural areas of
north central Edwards County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Large hail, damaging winds, and continuous cloud to ground lightning
are occurring with this storm. Move indoors immediately. Lightning is
one of nature's leading killers. Remember, if you can hear thunder,
you are close enough to be struck by lightning.
&&
LAT...LON 3029 10016 3008 10038 3019 10054 3029 10046
TIME...MOT...LOC 1404Z 218DEG 29KT 3019 10041
HAIL...1.00IN
WIND...60MPH
$$
BF1 follow-up statement
147
WWUS54 KEWX 151428
SVSEWX
Severe Weather Statement
National Weather Service Austin/San Antonio TX
928 AM CDT Thu Apr 15 2021
TXC137-151438-
/O.CAN.KEWX.SV.W.0037.000000T0000Z-210415T1500Z/
Edwards TX-
928 AM CDT Thu Apr 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL EDWARDS COUNTY
IS CANCELLED...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 300 PM CDT for
south central Texas.
LAT...LON 3029 10016 3008 10038 3019 10054 3029 10046
TIME...MOT...LOC 1427Z 218DEG 29KT 3034 10027
$$
BFThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 7:34 AM CDT | Special Weather Statement | EWX | Kinney | 41 min |
| Apr 15, 8:12 AM CDT | Special Weather Statement | EWX | Edwards | 48 min |
| Apr 15, 8:14 AM CDT | Special Weather Statement | EWX | Kinney | 46 min |
| Apr 15, 8:31 AM CDT | Severe Thunderstorm Warning | EWX | Edwards, Val Verde | 59 min |
| Apr 15, 8:40 AM CDT | Severe Thunderstorm Warning | EWX | Kinney | 65 min |
| Apr 15, 8:55 AM CDT | Special Weather Statement | EWX | Edwards | 50 min |
| Apr 15, 9:32 AM CDT | Severe Thunderstorm Warning | EWX | Edwards | 17 min |
| Apr 15, 9:42 AM CDT | Severe Thunderstorm Warning | EWX | Kinney, Uvalde | 63 min |
| Apr 15, 10:42 AM CDT | Severe Thunderstorm Warning | EWX | Uvalde | 45 min |
| Apr 15, 12:15 PM CDT | Severe Thunderstorm Warning | EWX | Gillespie, Llano | 60 min |
| Apr 15, 1:07 PM CDT | Severe Thunderstorm Warning | EWX | Blanco, Burnet, Llano, Travis | 53 min |
| Apr 15, 1:52 PM CDT | Severe Thunderstorm Warning | EWX | Burnet, Williamson | 36 min |
| Apr 15, 2:07 PM CDT | Severe Thunderstorm Warning | EWX | Burnet, Williamson | 40 min |
| Apr 15, 2:57 PM CDT | Severe Thunderstorm Warning | EWX | Burnet, Llano | 63 min |
| Apr 15, 3:21 PM CDT | Severe Thunderstorm Warning | EWX | Burnet, Williamson | 54 min |
| Apr 15, 3:56 PM CDT | Severe Thunderstorm Warning | EWX | Travis, Williamson | 49 min |
| Apr 15, 4:11 PM CDT | Special Weather Statement | EWX | Williamson | 49 min |
| Apr 15, 4:36 PM CDT | Severe Thunderstorm Warning | EWX | Bastrop, Lee, Travis, Williamson | 54 min |
| Apr 15, 5:22 PM CDT | Severe Thunderstorm Warning | EWX | Bastrop, Fayette, Lee | 29 min |
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.