Alert archive / Texas / Special Weather Statements in 2020

Special Weather Statement, NWS Austin/San Antonio, TX

January 27, 2020Edwards County, Texas

NWS Austin/San Antonio, TX issued this special weather statement at Jan 27, 2020, 11:54 PM CST for Edwards County, 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 outline as issued.

The facts

Issued: Jan 27, 2020, 11:54 PM CST (05:54 UTC)
Expired: Jan 28, 2020, 12:45 AM CST
In force: 51 min
Issued by: NWS Austin/San Antonio, TX

County Edwards County, TX

The radar

The Laughlin AFB radar (KDFX), 98 km from the middle of the area, began a volume at 05:54 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 00:00Z, 5.9 hours before the alert went out and 91 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: 31 J/kg
Mixed-layer CIN: -88 J/kg
Mixed-layer LCL: 2172 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 155 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 Jan 27, 10:45 PM CST, 1 hour 9 minutes earlier.

Area forecast discussion, Jan 27, 10:45 PM CST, 1 hour 9 minutes before

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Hazardous weather outlook, Jan 27, 4:07 AM CST, 19 hours 47 minutes before

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In the hours before

Special weather statement, Jan 27, 11:18 PM CST, 36 minutes before

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Special weather statement, Jan 27, 11:38 PM CST, 16 minutes before

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Special weather statement, Jan 27, 11:54 PM CST, 0 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
1154 PM CST Mon Jan 27 2020

TXZ183-184-280645-
Val Verde TX-Edwards TX-
1154 PM CST Mon Jan 27 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN EDWARDS AND EAST
CENTRAL VAL VERDE COUNTIES UNTIL 1245 AM CST...

At 1153 PM CST, Doppler radar was tracking a strong thunderstorm
near Loma Alta, and another strong thunderstorms in rural northwest
Edwards County, both moving northeast at 35 mph.

Half inch hail will be possible with these storms.

LAT...LON 3017 10023 2986 10077 3001 10090 3029 10054
      3029 10034
TIME...MOT...LOC 0553Z 232DEG 31KT 2998 10077

RUNYEN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 27, 11:18 PM CST	Special Weather Statement	EWX	Val Verde	27 min
Jan 27, 11:38 PM CST	Special Weather Statement	EWX	Kinney	22 min
Jan 28, 12:49 AM CST	Special Weather Statement	EWX	Real	41 min
Jan 28, 1:40 AM CST	Special Weather Statement	EWX	Gillespie, Kerr	35 min
Jan 28, 3:08 AM CST	Special Weather Statement	EWX	Medina	37 min
Jan 28, 5:47 AM CST	Wind Advisory	EWX	Kinney, Maverick, Val Verde	12 hr

Nearby

Special Weather Statements in Texas, 2020 Every special weather statement in 2020

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.