Alert archive / Texas / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 233, NWS San Angelo, TX
NWS San Angelo, TX issued this severe thunderstorm warning at Oct 21, 2017, 7:24 PM CDT for 4 counties in Texas. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Oct 21, 2017, 7:24 PM CDT (00:24 UTC)
- Expired
- Oct 21, 2017, 8:15 PM CDT
- In force
- 51 min
- Issued by
- NWS San Angelo, TX
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Fisher County, TX, Jones County, TX, Nolan County, TX, Taylor County, TX
The radar
The Dyess AFB radar (KDYX), 83 km from the middle of the area, began a volume at 00:27 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.
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 0.4 hours before the alert went out and 269 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
- 1142 J/kg
- Mixed-layer CIN
- -102 J/kg
- Mixed-layer LCL
- 1889 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 124 m²/s²
- 0-3 km storm-relative helicity
- 180 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 3.9
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS San Angelo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 21, 6:47 PM CDT, 37 minutes earlier.
Area forecast discussion, Oct 21, 6:47 PM CDT, 37 minutes before
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Hazardous Weather Outlook National Weather Service San Angelo TX 245 PM CDT Sat Oct 21 2017 TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139- 140-154-155-168>170-221945- Fisher-Nolan-Sterling-Coke-Runnels-Irion-Tom Green-Concho- Crockett-Schleicher-Sutton-Haskell-Throckmorton-Jones-Shackelford- Taylor-Callahan-Coleman-Brown-McCulloch-San Saba-Menard-Kimble- Mason- 245 PM CDT Sat Oct 21 2017 This Hazardous Weather Outlook is for portions of west central Texas. .DAY ONE...This Afternoon and Tonight Isolated thunderstorms may develop ahead of a dryline late this afternoon and early evening generally west of a Sweetwater, San Angelo to Ozona line. The main hazard will be damaging winds and large hail. Strong to severe thunderstorms will be possible this evening and overnight ahead of a cold front that will move south across the area. The most favored area for severe storms will be along and north of Interstate 20 this evening. The primary hazards will be large hail and damaging winds, although an isolated tornado cannot be ruled out. .DAYS TWO THROUGH SEVEN...Sunday through Friday The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Limited spotter activation may be necessary this evening, primarily north of Interstate 20.
In the hours before
Special weather statement, Oct 21, 6:36 PM CDT, 48 minutes before
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</html>The office that day
Everything else NWS San Angelo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 21, 7:01 PM CDT | Special Weather Statement | SJT | Haskell, Throckmorton | 44 min |
| Oct 21, 7:46 PM CDT | Severe Thunderstorm Warning | SJT | Haskell, Throckmorton | 44 min |
| Oct 21, 8:14 PM CDT | Special Weather Statement | SJT | Jones | 46 min |
| Oct 21, 8:26 PM CDT | Special Weather Statement | SJT | Jones | 34 min |
| Oct 21, 8:29 PM CDT | Severe Thunderstorm Warning | SJT | Throckmorton | 46 min |
| Oct 21, 8:42 PM CDT | Special Weather Statement | SJT | Haskell | 48 min |
| Oct 21, 8:49 PM CDT | Severe Thunderstorm Warning | SJT | Jones, Shackelford, Throckmorton | 41 min |
| Oct 21, 8:52 PM CDT | Severe Thunderstorm Warning | SJT | Haskell, Throckmorton | 38 min |
| Oct 21, 9:23 PM CDT | Special Weather Statement | SJT | Throckmorton | 37 min |
| Oct 21, 9:29 PM CDT | Severe Thunderstorm Warning | SJT | Haskell, Jones, Shackelford, Throckmorton | 46 min |
| Oct 21, 9:31 PM CDT | Special Weather Statement | SJT | Throckmorton | 44 min |
| Oct 21, 9:54 PM CDT | Special Weather Statement | SJT | Jones | 36 min |
| Oct 21, 10:15 PM CDT | Special Weather Statement | SJT | Shackelford | 30 min |
| Oct 21, 10:29 PM CDT | Special Weather Statement | SJT | Jones, Shackelford | 46 min |
| Oct 21, 10:44 PM CDT | Special Weather Statement | SJT | Shackelford | 31 min |
| Oct 21, 10:51 PM CDT | Special Weather Statement | SJT | Taylor | 24 min |
| Oct 21, 10:59 PM CDT | Severe Thunderstorm Warning | SJT | Callahan, Jones, Shackelford, Taylor | 46 min |
| Oct 21, 11:44 PM CDT | Special Weather Statement | SJT | Callahan | 46 min |
| Oct 22, 12:35 AM CDT | Special Weather Statement | SJT | Callahan | 40 min |
| Oct 22, 3:06 AM CDT | Special Weather Statement | SJT | San Saba | 39 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2017Every severe thunderstorm warning in 2017
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.