Alert archive / Texas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 13, NWS Austin/San Antonio, TX

January 15, 2017Kendall County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Jan 15, 2017, 8:59 PM CST for Kendall County, Texas. It was in force for 46 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jan 15, 2017, 8:59 PM CST (02:59 UTC)
Expired: Jan 15, 2017, 9:45 PM CST
In force: 46 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

County Kendall County, TX

The radar

The Austin/San Antonio radar (KEWX), 64 km from the middle of the area, began a volume at 02:59 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.

What was reported inside it

Time	Report	Where	Remark
Jan 15, 9:26 PM CST	TSTM WND DMG	3 E Welfare, TX	SOCIAL MEDIA REPORT WITH PHOTOS OF LARGE TREE LIMBS DOWN NEAR THE INTERSECTION OF SCHMIDT LANE AND ERNST ROAD. WIND SPEEDS WERE ESTIMATED AT 60 MPH.
Jan 15, 9:50 PM CST	HAIL 1	Kendalia, TX

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 27 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jan 15, 6:00 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Del Rio, TX (KDLF), launched 00:00Z, 3.0 hours before the alert went out and 222 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: 540 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 1460 m above ground
0-6 km bulk shear: 0 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 0 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

670 
WUUS54 KEWX 160259
SVREWX
TXC259-160345-
/O.NEW.KEWX.SV.W.0013.170116T0259Z-170116T0345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Austin/San Antonio TX
859 PM CST SUN JAN 15 2017

The National Weather Service in Austin San Antonio has issued a

* Severe Thunderstorm Warning for...
  Central Kendall County in south central Texas...

* Until 945 PM CST

* At 858 PM CST, a severe thunderstorm was located over Nelson City,
  or 7 miles northwest of Boerne, moving east northeast at 30 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees. 

* Locations impacted include...
  Boerne, Sisterdale, Kreutzberg, Walnut Grove, Guadalupe River State
  Park, Kendalia, Welfare, Nelson City, Waring and Crown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch remains in effect until midnight CST for south
central Texas.

LAT...LON 3005 9851 2989 9847 2988 9848 2987 9850
      2981 9888 2990 9892 2994 9892 3009 9855
TIME...MOT...LOC 0258Z 254DEG 24KT 2988 9883 

HAIL...1.50IN
WIND...60MPH
 
$$

BMW

1 follow-up statement

732 
WWUS54 KEWX 160323
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
923 PM CST SUN JAN 15 2017

TXC259-160345-
/O.CON.KEWX.SV.W.0013.000000T0000Z-170116T0345Z/
Kendall TX-
923 PM CST SUN JAN 15 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM CST
FOR CENTRAL KENDALL COUNTY...

At 922 PM CST, a severe thunderstorm was located near Kreutzberg, or
10 miles northeast of Boerne, moving east at 30 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...
Boerne, Sisterdale, Kreutzberg, Walnut Grove, Guadalupe River State
Park, Kendalia, Welfare, Nelson City, Waring and Crown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch remains in effect until midnight CST for south
central Texas.

LAT...LON 3005 9851 2989 9847 2988 9848 2987 9850
      2981 9888 2990 9892 2994 9892 3009 9855
TIME...MOT...LOC 0322Z 254DEG 24KT 2992 9865 

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

BW

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 Austin/San Antonio, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Jan 15, 6:46 PM CST, 2 hours 13 minutes earlier.

Area forecast discussion, Jan 15, 6:46 PM CST, 2 hours 13 minutes before

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
646 PM CST Sun Jan 15 2017

.UPDATE...
The forecast has been updated to include the mention of Tornado Watch
#8, which is in effect for the Hill Country and portions of the I-35
corridor until midnight. In addition, a Severe Thunderstorm Watch
remains in effect for the Rio Grande plains and Edwards plateau until
10 PM.

&&

.AVIATION...
Concerns continue to be centered on the chance for showers and
thunderstorms this evening and overnight. We will continue to mention
a TEMPO group at DRT through 04Z as storms continue to develop near
and to the west of the terminal. After 04Z, shower and thunderstorm
activity is expected to move east of the terminal. Farther east
across the I-35 corridor, isolated showers will continue this evening
and we will mention VCSH. Early Monday morning, we still expect a
line of convection to move in from the west between 08-11Z along
I-35 and will mention TEMPO groups at our sites. Once the line passes
east of the terminals, we expect some lingering showers through mid-
morning.

&&

.PREV DISCUSSION... /ISSUED 305 PM CST Sun Jan 15 2017/

SHORT TERM (Tonight through Monday Night)...
Strong to severe convection is about to enter the western boundary of
our forecast area, northwest of Del Rio. This convection is being
generated by a strong shortwave trough, unstable Gulf air, and a
slowly northward moving warm front. High resolution mesoscale models
have been consistent in depicting a thin MCS with embedded supercell
structures. The Texas Tech and NSSL WRFs have verified best so far
with timing and linear mode, with recent HRRR runs showing a more
broken line of supercells. Overall, prior forecasts are on track and
we expect the line to sweep across the area, generally along and
north of U.S. 90. The line should weaken with time, and reach the
I-35 corridor around 05-06Z. While one or two brief tornadoes are
possible, the main severe threats will be large hail and damaging
winds. Rainfall will average 1/2 to 1 inch, although some locations
in the Edwards Plateau, Hill Country, and Metro Austin could receive
up to 2-3 inches by daybreak Monday. Showers and thunderstorms will
linger on the coastal plains Monday, but rainfall amounts should be
1/4 inch or less.

LONG TERM (Tuesday through Sunday)...
Highly amplified and progressive flow will continue across the CONUS
through the next 7-10 days. This will bring a progression of fairly
sharp shortwave troughs through a general longwave trough over the
Plains. The net result for our area will be a cold front bringing
colder conditions Wednesday and Thursday, then back to above normal
temperatures Friday through Sunday before another cold front. PoPs
will be in the forecast through Friday, although rainfall should be
light. Just beyond this forecast period is another strong front and
the potential for strong convection, then a colder, drier period.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              61  71  51  57  49 /  80  40  30  60  50
Austin Bergstrom Intl Airport  62  71  52  58  49 /  80  40  30  60  50
New Braunfels Muni Airport     62  72  54  58  51 /  70  40  40  60  50
Burnet Muni Airport            55  69  46  55  46 /  90  10  20  50  50
Del Rio Intl Airport           50  72  51  60  50 /  60   0  -   40  30
Georgetown Muni Airport        58  69  48  56  47 /  90  30  30  50  50
Hondo Muni Airport             60  75  55  60  51 /  70  10  20  60  50
San Marcos Muni Airport        62  72  53  59  50 /  70  40  40  60  50
La Grange - Fayette Regional   66  72  57  61  53 /  70  60  50  50  50
San Antonio Intl Airport       62  74  55  60  52 /  70  20  30  60  50
Stinson Muni Airport           62  74  57  61  53 /  70  20  30  50  50

&&

.EWX WATCHES/WARNINGS/ADVISORIES...
None.
&&

Mesoscale/Aviation...24
Synoptic/Grids...Allen
Public Service/Data Collection...30

Hazardous weather outlook, Jan 15, 4:58 AM CST, 16 hours 1 minute before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
458 AM CST SUN JAN 15 2017

TXZ171>173-183>194-202>209-217>225-228-161100-
LLANO-BURNET-WILLIAMSON-VAL VERDE-EDWARDS-REAL-KERR-BANDERA-
GILLESPIE-KENDALL-BLANCO-HAYS-TRAVIS-BASTROP-LEE-KINNEY-UVALDE-
MEDINA-BEXAR-COMAL-GUADALUPE-CALDWELL-FAYETTE-MAVERICK-ZAVALA-
FRIO-ATASCOSA-WILSON-KARNES-GONZALES-DE WITT-LAVACA-DIMMIT-
458 AM CST SUN JAN 15 2017

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH-CENTRAL TEXAS..

.DAY ONE...TODAY AND TONIGHT.

THERE IS A CHANCE FOR STRONG TO SEVERE THUNDERSTORMS THIS AFTERNOON
AND TONIGHT. THE GREATEST THREAT FOR SEVERE STORMS WILL BE ALONG
AND WEST OF I-35. DAMAGING WIND GUSTS...ISOLATED TORNADOES...AND
LARGE HAIL WILL BE POSSIBLE. LOCALLY HEAVY RAIN IS ALSO POSSIBLE
ACROSS THE HILL COUNTRY AND MAY CAUSE SOME FLOODING.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS SHOULD REPORT ANY SEVERE WEATHER AND EXCESSIVE RAINFALL
AMOUNTS.

In the hours before

Special weather statement, Jan 15, 8:19 PM CST, 40 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
819 PM CST SUN JAN 15 2017

TXZ186-189-160300-
Kerr TX-Kendall TX-
819 PM CST SUN JAN 15 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN KERR AND
NORTHWESTERN KENDALL COUNTIES UNTIL 900 PM CST...

At 818 PM CST, Doppler radar was tracking a strong thunderstorm over
Kerrville State Park, or over Kerrville, moving east at 30 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Kerrville, Comfort, Sisterdale, Cypress Creek, Welfare, Kerrville
State Park, Center Point, Waring, Bankersmith and Crown.

A tornado watch remains in effect until midnight CST for south
central Texas.

LAT...LON 2989 9870 2990 9922 3013 9922 3014 9868
TIME...MOT...LOC 0218Z 266DEG 26KT 3001 9914

BMW

Local storm report, Jan 15, 8:23 PM CST, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
823 PM CST SUN JAN 15 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0803 PM     HAIL             1 S MEDINA              29.78N  99.25W
01/15/2017  E2.00 INCH       BANDERA            TX   COCORAHS

            LARGE HAIL PRODUCING CAR DENTS

&&

EVENT NUMBER EWX1700030

SBS

Local storm report, Jan 15, 8:31 PM CST, 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
831 PM CST SUN JAN 15 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0815 PM     HAIL             4 NNW BANDERA           29.78N  99.10W
01/15/2017  E1.25 INCH       BANDERA            TX   COCORAHS

            AVERAGE HAIL SIZE REPORTED

&&

EVENT NUMBER EWX1700031

SBS

Local storm report, Jan 15, 8:32 PM CST, 27 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
832 PM CST SUN JAN 15 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0815 PM     HAIL             4 NNW BANDERA           29.78N  99.10W
01/15/2017  E1.25 INCH       BANDERA            TX   COCORAHS

&&

CORRECTED REMARKS

EVENT NUMBER EWX1700031

SBS

Special weather statement, Jan 15, 8:56 PM CST, 3 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
856 PM CST SUN JAN 15 2017

TXZ185>190-203>205-220-160345-
Bexar TX-Uvalde TX-Atascosa TX-Blanco TX-Gillespie TX-Kerr TX-
Medina TX-Real TX-Bandera TX-Kendall TX-
856 PM CST SUN JAN 15 2017

...SIGNIFICANT WEATHER ADVISORY FOR MEDINA...BANDERA...KERR...
UVALDE...WEST CENTRAL BLANCO...GILLESPIE...NORTHWESTERN ATASCOSA...
KENDALL...NORTHWESTERN BEXAR AND SOUTHEASTERN REAL COUNTIES UNTIL 945
PM CST...

At 855 PM CST, Doppler radar was tracking strong thunderstorms along
a line extending from 8 miles north of Mountain Home to Blewett.
Movement was east at 30 mph.

Dime size hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Medina, Kerrville, Uvalde, Fredericksburg, Boerne, Hondo, Devine,
Castroville, Comfort, Bandera, Leakey, Tarpley, Vanderpool, Hunt,
Helotes, Fair Oaks Ranch, Lytle, Ingram, Sabinal and Stonewall.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

A tornado watch remains in effect until midnight CST for south
central Texas.

A severe thunderstorm watch remains in effect until 1000 PM CST for
south central Texas.

LAT...LON 3035 9852 2910 9877 2910 10011 2924 10011
      3029 9946 3029 9930 3036 9930
TIME...MOT...LOC 0255Z 267DEG 25KT 3028 9940 2917 10003

Local storm report, Jan 15, 8:57 PM CST, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
857 PM CST SUN JAN 15 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0804 PM     HAIL             MEDINA                  29.80N  99.25W
01/15/2017  E2.50 INCH       BANDERA            TX   PUBLIC

            LARGE HAIL BUSTED OUT A SKY LIGHT

&&

EVENT NUMBER EWX1700032

SBS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 15, 6:12 PM CST	Special Weather Statement	EWX	Edwards	48 min
Jan 15, 6:21 PM CST	Special Weather Statement	EWX	Kinney	39 min
Jan 15, 6:24 PM CST	Severe Thunderstorm Warning	EWX	Edwards, Real	66 min
Jan 15, 6:30 PM CST	Special Weather Statement	EWX	Edwards	60 min
Jan 15, 6:42 PM CST	Severe Thunderstorm Warning	EWX	Edwards, Kerr, Real	48 min
Jan 15, 6:43 PM CST	Special Weather Statement	EWX	Kimble	32 min
Jan 15, 6:48 PM CST	Special Weather Statement	EWX	Kinney	42 min
Jan 15, 7:00 PM CST	Severe Thunderstorm Warning	EWX	Kinney	28 min
Jan 15, 7:08 PM CST	Severe Thunderstorm Warning	EWX	Bandera	67 min
Jan 15, 7:13 PM CST	Severe Thunderstorm Warning	EWX	Kinney	47 min
Jan 15, 7:17 PM CST	Special Weather Statement	EWX	Edwards	43 min
Jan 15, 7:33 PM CST	Special Weather Statement	EWX	Kerr	42 min
Jan 15, 7:46 PM CST	Severe Thunderstorm Warning	EWX	Kinney	29 min
Jan 15, 7:48 PM CST	Tornado Warning	EWX	Kerr	27 min
Jan 15, 7:59 PM CST	Severe Thunderstorm Warning	EWX	Kinney, Uvalde	46 min
Jan 15, 8:14 PM CST	Severe Thunderstorm Warning	EWX	Bandera, Kendall, Kerr	46 min
Jan 15, 8:16 PM CST	Special Weather Statement	EWX	Kerr, Real, Uvalde	44 min
Jan 15, 8:19 PM CST	Special Weather Statement	EWX	Kendall	41 min
Jan 15, 8:36 PM CST	Areal Flood Advisory	EWX	Bandera, Kerr, Real	3 hr
Jan 15, 8:56 PM CST	Special Weather Statement	EWX	Bandera, Gillespie, Kendall, Kerr, Medina, Uvalde	49 min
Jan 15, 9:11 PM CST	Areal Flood Advisory	EWX	Kinney, Uvalde	3 hr
Jan 15, 9:27 PM CST	Tornado Warning	EWX	Kendall	33 min
Jan 15, 9:43 PM CST	Special Weather Statement	EWX	Bandera, Medina, Uvalde	62 min
Jan 15, 9:44 PM CST	Severe Thunderstorm Warning	EWX	Blanco, Comal, Kendall	46 min
Jan 15, 9:52 PM CST	Areal Flood Advisory	EWX	Bandera, Kendall, Kerr	3 hr
Jan 15, 10:22 PM CST	Special Weather Statement	EWX	Hays	38 min
Jan 15, 10:25 PM CST	Special Weather Statement	EWX	Bexar	50 min
Jan 15, 11:07 PM CST	Special Weather Statement	EWX	Hays, Travis	53 min
Jan 15, 11:16 PM CST	Special Weather Statement	EWX	Bexar, Comal	29 min
Jan 15, 11:21 PM CST	Areal Flood Advisory	EWX	Bexar	3 hr
Jan 15, 11:30 PM CST	Special Weather Statement	EWX	Bexar	45 min
Jan 15, 11:45 PM CST	Special Weather Statement	EWX	Bexar, Comal	30 min
Jan 16, 12:07 AM CST	Special Weather Statement	EWX	Williamson	38 min
Jan 16, 12:32 AM CST	Areal Flood Advisory	EWX	Comal, Hays	3 hr
Jan 16, 1:04 AM CST	Areal Flood Advisory	EWX	Bexar, Guadalupe	3 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2017 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.