Alert archive / Texas / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 171, NWS San Angelo, TX
NWS San Angelo, TX issued this severe thunderstorm warning at Jun 9, 2017, 5:50 PM CDT for Mason County, Texas. It was in force for 55 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
- Jun 9, 2017, 5:50 PM CDT (22:50 UTC)
- Expired
- Jun 9, 2017, 6:45 PM CDT
- In force
- 55 min
- Issued by
- NWS San Angelo, TX
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Mason County, TX
The radar
The San Angelo radar (KSJT), 141 km from the middle of the area, began a volume at 22:50 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 12:00Z, 10.8 hours before the alert went out and 216 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
- 48 J/kg
- Mixed-layer CIN
- -362 J/kg
- Mixed-layer LCL
- 1646 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 171 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Jun 9, 3:45 PM CDT, 2 hours 5 minutes earlier.
Area forecast discussion, Jun 9, 3:45 PM CDT, 2 hours 5 minutes before
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</html>Hazardous weather outlook, Jun 9, 2:52 PM CDT, 2 hours 58 minutes before
Hazardous Weather Outlook National Weather Service San Angelo TX 252 PM CDT Fri Jun 9 2017 TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139- 140-154-155-168>170-102000- 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- 252 PM CDT Fri Jun 9 2017 This Hazardous Weather Outlook is for portions of west central Texas. .DAY ONE...This Afternoon and Tonight Isolated strong to severe thunderstorms are possible late this afternoon and evening across the area southeast of a Brownwood to Junction line. The weather threats include damaging winds in addition to dangerous lightning. .DAYS TWO THROUGH SEVEN...Saturday through Thursday The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated at this time.
In the hours before
Special weather statement, Jun 9, 4:16 PM CDT, 1 hour 34 minutes before
Special Weather Statement
National Weather Service San Angelo TX
416 PM CDT FRI JUN 9 2017
TXZ170-092200-
Mason TX-
416 PM CDT FRI JUN 9 2017
...SIGNIFICANT WEATHER ADVISORY FOR MASON COUNTY UNTIL 500 PM CDT...
At 414 PM CDT, Doppler radar was tracking a strong thunderstorm 8
miles northwest of Loyal Valley, or 9 miles southeast of Mason,
moving southeast at 5 mph.
Half inch hail and wind gusts up to 50 mph will be possible with this
storm.
Locations impacted include...
Mason, Pontotoc, Loyal Valley, Fredonia, Katemcy, Streeter, US-377
near The Mason-McCulloch County Line, US-87 Near The Mason-Gillespie
County Line.
LAT...LON 3094 9948 3094 9910 3092 9909 3092 9897
3050 9896 3050 9930
TIME...MOT...LOC 2114Z 330DEG 6KT 3064 9914
snSpecial weather statement, Jun 9, 5:19 PM CDT, 31 minutes before
Special Weather Statement
National Weather Service San Angelo TX
519 PM CDT FRI JUN 9 2017
TXZ170-092315-
Mason TX-
519 PM CDT FRI JUN 9 2017
...SIGNIFICANT WEATHER ADVISORY FOR MASON COUNTY UNTIL 615 PM CDT...
At 518 PM CDT, Doppler radar was tracking a strong thunderstorm 10
miles south of Mason, moving southeast at 10 mph.
Nickel size hail and wind gusts of 50 to 55 mph will be possible with
this storm.
Locations impacted include...
Mason, Loyal Valley, Katemcy, Streeter, US-377 near The
Mason-McCulloch County Line, US-87 Near The Mason-Gillespie County
Line.
LAT...LON 3050 9948 3094 9948 3094 9912 3058 9896
3050 9896
TIME...MOT...LOC 2218Z 329DEG 8KT 3059 9925
snThe office that day
Everything else NWS San Angelo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 4:16 PM CDT | Special Weather Statement | SJT | Mason | 44 min |
| Jun 9, 5:19 PM CDT | Special Weather Statement | SJT | Mason | 56 min |
| Jun 9, 6:01 PM CDT | Areal Flood Advisory | SJT | Mason | 119 min |
| Jun 9, 6:33 PM CDT | Flash Flood Warning | SJT | Mason | 3 hr |
| Jun 9, 6:37 PM CDT | Special Weather Statement | SJT | Kimble | 53 min |
| Jun 9, 6:40 PM CDT | Special Weather Statement | SJT | Menard | 65 min |
| Jun 9, 6:59 PM CDT | Severe Thunderstorm Warning | SJT | Kimble | 61 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.