Alert archive / Texas / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 7, NWS Austin/San Antonio, TX

March 8, 2016Val Verde County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Mar 8, 2016, 1:44 AM CST for Val Verde County, Texas. It was in force for 46 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: Mar 8, 2016, 1:44 AM CST (07:44 UTC)
Expired: Mar 8, 2016, 2:30 AM CST
In force: 46 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Val Verde County, TX

The radar

The Laughlin AFB radar (KDFX), 152 km from the middle of the area, began a volume at 07:44 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 8, 1:18 AM CST	Severe Thunderstorm Watch	SPC	10 hr

The nearest sounding before it

Del Rio, TX (KDLF), launched 00:00Z, 7.7 hours before the alert went out and 108 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: 1458 J/kg
Mixed-layer CIN: -97 J/kg
Mixed-layer LCL: 1391 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.4

Open this sounding in Storm Lab

The text

As transmitted.

230 
WUUS54 KEWX 080744
SVREWX
TXC465-080830-
/O.NEW.KEWX.SV.W.0007.160308T0744Z-160308T0830Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
144 AM CST TUE MAR 8 2016

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN VAL VERDE COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 230 AM CST

* AT 144 AM CST...A SEVERE THUNDERSTORM WAS LOCATED NEAR PANDALE...OR
  19 MILES WEST OF JUNO...MOVING NORTHEAST AT 40 TO 45 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  PANDALE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3014 10160 3028 10155 3029 10154 3029 10120
      3028 10117 2999 10148 2999 10159 3005 10161
TIME...MOT...LOC 0744Z 217DEG 36KT 3016 10145 

HAIL...1.00IN
WIND...60MPH
 
$$

ALLEN

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 8, 1:12 AM CST	Special Weather Statement	EWX	Val Verde	48 min
Mar 8, 1:23 AM CST	Special Weather Statement	EWX	Val Verde	52 min
Mar 8, 1:47 AM CST	Special Weather Statement	EWX	Val Verde	43 min
Mar 8, 2:22 AM CST	Special Weather Statement	EWX	Edwards	38 min
Mar 8, 2:32 AM CST	Special Weather Statement	EWX	Val Verde	28 min
Mar 8, 2:37 AM CST	Special Weather Statement	EWX	Edwards	38 min
Mar 8, 3:03 AM CST	Areal Flood Advisory	EWX	Val Verde	3 hr
Mar 8, 3:09 AM CST	Severe Thunderstorm Warning	EWX	Edwards, Val Verde	28 min
Mar 8, 6:28 AM CST	Special Weather Statement	EWX	Llano	32 min
Mar 8, 6:56 AM CST	Special Weather Statement	EWX	Llano	34 min
Mar 8, 7:37 AM CST	Severe Thunderstorm Warning	EWX	Burnet, Llano	38 min
Mar 8, 8:51 AM CST	Special Weather Statement	EWX	Lee	24 min
Mar 8, 9:02 AM CST	Special Weather Statement	EWX	Williamson	43 min
Mar 8, 9:16 AM CST	Tornado Warning	EWX	Williamson	29 min
Mar 8, 2:43 PM CST	Special Weather Statement	EWX	Val Verde	47 min
Mar 8, 3:00 PM CST	Severe Thunderstorm Warning	EWX	Val Verde	75 min
Mar 8, 4:14 PM CST	Special Weather Statement	EWX	Val Verde	61 min

Nearby

Severe Thunderstorm Warnings in Texas, 2016 Every severe thunderstorm warning in 2016

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.