Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS San Angelo, TX

May 18, 2021Mason County, Texas

NWS San Angelo, TX issued this special weather statement at May 18, 2021, 10:54 AM CDT for Mason County, Texas. It was in force for 36 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 18, 2021, 10:54 AM CDT (15:54 UTC)
Expired: May 18, 2021, 11:30 AM CDT
In force: 36 min
Issued by: NWS San Angelo, TX

County Mason County, TX

The radar

The San Angelo radar (KSJT), 141 km from the middle of the area, began a volume at 15:55 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 12:00Z, 3.9 hours before the alert went out and 213 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 574 J/kg
Mixed-layer CIN: -294 J/kg
Mixed-layer LCL: 1177 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 179 m²/s²
0-3 km storm-relative helicity: 351 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at May 18, 6:17 AM CDT, 4 hours 37 minutes earlier.

Area forecast discussion, May 18, 6:17 AM CDT, 4 hours 37 minutes before

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Hazardous weather outlook, May 18, 3:44 AM CDT, 7 hours 10 minutes before

Hazardous Weather Outlook
National Weather Service San Angelo TX
344 AM CDT Tue May 18 2021

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-190845-
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-
344 AM CDT Tue May 18 2021

This Hazardous Weather Outlook is for portions of west central
Texas.

.DAY ONE...Today and Tonight

Strong to severe thunderstorms will continue through late this
morning. In addition to damaging wind gusts, heavy rainfall may
cause flash flooding in some areas.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

The threat of strong to severe storms and and heavy rainfall will
continue across much of West Central Texas into Wednesday. After
a brief lull on Thursday, more storms will return for the upcoming
weekend.

.SPOTTER INFORMATION STATEMENT...
Spotter activation will likely be needed. Please relay any
information about observed weather to the NWS while following all
local, state and CDC guidelines.

In the hours before

Special weather statement, May 18, 6:07 AM CDT, 4 hours 47 minutes before

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Special weather statement, May 18, 6:49 AM CDT, 4 hours 5 minutes before

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Special weather statement, May 18, 7:15 AM CDT, 3 hours 39 minutes before

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Special weather statement, May 18, 8:10 AM CDT, 2 hours 44 minutes before

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Special weather statement, May 18, 9:05 AM CDT, 1 hour 49 minutes before

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Special weather statement, May 18, 10:54 AM CDT, 0 minutes before

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The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 17, 7:06 PM CDT	Tornado Warning Tornado observed	SJT	Sterling	39 min
May 17, 7:19 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	SJT	Sterling	41 min
May 17, 7:24 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Nolan	66 min
May 17, 7:46 PM CDT	Special Weather Statement	SJT	Haskell	44 min
May 17, 7:55 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	SJT	Sterling	50 min
May 17, 8:06 PM CDT	Flash Flood Warning	SJT	Nolan	3 hr
May 17, 8:22 PM CDT	Special Weather Statement	SJT	Jones	53 min
May 17, 8:35 PM CDT	Special Weather Statement	SJT	Nolan	55 min
May 17, 8:40 PM CDT	Areal Flood Advisory	SJT	Fisher, Haskell, Jones, Throckmorton	2 hr
May 17, 8:42 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Sterling	36 min
May 17, 8:48 PM CDT	Special Weather Statement	SJT	Throckmorton	57 min
May 17, 9:00 PM CDT	Special Weather Statement	SJT	Shackelford	45 min
May 17, 9:06 PM CDT	Severe Thunderstorm Warning	SJT	Shackelford, Throckmorton	32 min
May 17, 9:09 PM CDT	Areal Flood Advisory	SJT	Coke, Jones, Nolan, Shackelford, Taylor	111 min
May 17, 9:11 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Nolan, Runnels, Taylor	64 min
May 17, 9:24 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Jones, Shackelford, Taylor	51 min
May 17, 9:54 PM CDT	Special Weather Statement	SJT	Callahan	51 min
May 17, 10:03 PM CDT	Special Weather Statement	SJT	Runnels	42 min
May 17, 10:22 PM CDT	Severe Thunderstorm Warning	SJT	Coke	38 min
May 17, 10:52 PM CDT	Special Weather Statement	SJT	Brown, Coleman	38 min
May 18, 12:41 AM CDT	Special Weather Statement	SJT	Tom Green	49 min
May 18, 1:08 AM CDT	Severe Thunderstorm Warning	SJT	Concho, Tom Green	52 min
May 18, 1:36 AM CDT	Special Weather Statement	SJT	Fisher	24 min
May 18, 1:38 AM CDT	Special Weather Statement	SJT	Jones	37 min
May 18, 1:50 AM CDT	Severe Thunderstorm Warning	SJT	Fisher	25 min
May 18, 1:56 AM CDT	Special Weather Statement	SJT	Runnels	34 min
May 18, 1:59 AM CDT	Severe Thunderstorm Warning	SJT	Concho, Tom Green	46 min
May 18, 2:00 AM CDT	Areal Flood Advisory	SJT	Concho, Tom Green	2 hr
May 18, 2:11 AM CDT	Severe Thunderstorm Warning	SJT	Fisher, Jones	38 min
May 18, 2:21 AM CDT	Special Weather Statement	SJT	Brown	24 min
May 18, 2:49 AM CDT	Special Weather Statement	SJT	Concho	26 min
May 18, 3:09 AM CDT	Areal Flood Advisory	SJT	Fisher, Jones	3 hr
May 18, 4:01 AM CDT	Flash Flood Warning	SJT	Fisher, Jones	3 hr
May 18, 4:18 AM CDT	Severe Thunderstorm Warning	SJT	Irion, Sterling, Tom Green	57 min
May 18, 4:25 AM CDT	Special Weather Statement	SJT	Brown	35 min
May 18, 4:27 AM CDT	Areal Flood Advisory	SJT	Crockett, Irion, Sterling, Tom Green	2 hr
May 18, 5:03 AM CDT	Special Weather Statement	SJT	Brown	42 min
May 18, 5:03 AM CDT	Severe Thunderstorm Warning	SJT	Coke, Irion, Sterling, Tom Green	57 min
May 18, 5:16 AM CDT	Areal Flood Advisory	SJT	Coke, Irion, Sterling, Tom Green	3 hr
May 18, 6:07 AM CDT	Special Weather Statement	SJT	Concho	38 min
May 18, 6:39 AM CDT	Areal Flood Advisory	SJT	Concho, Menard, Schleicher, Tom Green	3 hr
May 18, 6:49 AM CDT	Special Weather Statement	SJT	Concho	26 min
May 18, 7:15 AM CDT	Special Weather Statement	SJT	McCulloch	45 min
May 18, 7:30 AM CDT	Areal Flood Advisory	SJT	Schleicher	3 hr
May 18, 8:10 AM CDT	Special Weather Statement	SJT	Sutton	50 min
May 18, 9:05 AM CDT	Special Weather Statement	SJT	Sutton	40 min

Nearby

Special Weather Statements in Texas, 2021 Every special weather statement 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.