Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Austin/San Antonio, TX

September 18, 2021Real County, Texas

NWS Austin/San Antonio, TX issued this special weather statement at Sep 18, 2021, 1:32 PM CDT for Real County, Texas. It was in force for 43 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: Sep 18, 2021, 1:32 PM CDT (18:32 UTC)
Expired: Sep 18, 2021, 2:15 PM CDT
In force: 43 min
Issued by: NWS Austin/San Antonio, TX
Hail: 0.00 in
Wind: 50

County Real County, TX

The radar

The Laughlin AFB radar (KDFX), 53 km from the middle of the area, began a volume at 18:30 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, 6.5 hours before the alert went out and 88 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: 1210 J/kg
Mixed-layer CIN: -140 J/kg
Mixed-layer LCL: 1175 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: 61 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Austin/San Antonio, TX wrote its last area forecast discussion before this special weather statement went out at Sep 18, 12:56 PM CDT, 36 minutes earlier.

Area forecast discussion, Sep 18, 12:56 PM CDT, 36 minutes before

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Hazardous weather outlook, Sep 18, 3:41 AM CDT, 9 hours 51 minutes before

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In the hours before

Special weather statement, Sep 18, 1:32 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
132 PM CDT Sat Sep 18 2021

TXZ184-185-202-203-181915-
Uvalde TX-Kinney TX-Edwards TX-Real TX-
132 PM CDT Sat Sep 18 2021

...A strong thunderstorm will impact portions of northeastern Kinney,
northwestern Uvalde, south central Edwards and southwestern Real
Counties through 215 PM CDT...

At 131 PM CDT, Doppler radar was tracking a strong thunderstorm over
Barksdale, or 15 miles west of Leakey, moving south at 20 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Leakey, Camp Wood, Laguna, Montell, Barksdale, Garner State Park, Rio
Frio, Reagan Wells, Concan, Vance and Turkey Mountain.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

Persons in campgrounds should consider seeking sturdy shelter until
this storm passes.

&&

LAT...LON 2982 10016 2989 9989 2951 9961 2937 10021
TIME...MOT...LOC 1831Z 349DEG 17KT 2975 10003

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

MORRIS

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 18, 2:03 PM CDT	Special Weather Statement	EWX	Kinney	42 min
Sep 18, 2:24 PM CDT	Special Weather Statement	EWX	Medina, Uvalde	66 min
Sep 18, 2:34 PM CDT	Severe Thunderstorm Warning	EWX	Edwards, Kinney, Maverick, Uvalde, Zavala	56 min
Sep 18, 3:13 PM CDT	Special Weather Statement	EWX	Val Verde	62 min
Sep 18, 3:27 PM CDT	Special Weather Statement	EWX	Kinney	63 min
Sep 18, 3:33 PM CDT	Special Weather Statement	EWX	Dimmit, Maverick, Zavala	57 min
Sep 18, 3:39 PM CDT	Special Weather Statement	EWX	Fayette, Lavaca	66 min
Sep 18, 3:59 PM CDT	Special Weather Statement	EWX	Val Verde	46 min
Sep 18, 4:18 PM CDT	Special Weather Statement	EWX	Real	57 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.