Alert archive / Texas / Special Weather Statements in 2018

Special Weather Statement, NWS Austin/San Antonio, TX

February 25, 2018Bandera County, Texas

NWS Austin/San Antonio, TX issued this special weather statement at Feb 25, 2018, 6:13 AM CST for Bandera County, Texas. It was in force for 47 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: Feb 25, 2018, 6:13 AM CST (12:13 UTC)
Expired: Feb 25, 2018, 7:00 AM CST
In force: 47 min
Issued by: NWS Austin/San Antonio, TX

County Bandera County, TX

The radar

The Austin/San Antonio radar (KEWX), 99 km from the middle of the area, began a volume at 12:13 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

Corpus Christi, TX (KCRP), launched 12:00Z, 0.2 hours before the alert went out and 293 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: 1207 J/kg
Mixed-layer CIN: -97 J/kg
Mixed-layer LCL: 514 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 162 m²/s²
0-3 km storm-relative helicity: 53 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 4.2

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 Feb 25, 5:43 AM CST, 30 minutes earlier.

Area forecast discussion, Feb 25, 5:43 AM CST, 30 minutes before

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
543 AM CST Sun Feb 25 2018

.UPDATE...
12Z Aviation forecast below.

&&

.AVIATION...
A mid level disturbance will generate showers and embedded
thunderstorms this morning across South Central Texas. A few storms
could produce hail. In particular, an earlier split of a supercell
has produced a right moving storm that will move W to E near PEZ
producing large hail, and a left moving storm moving S to N between
HDO and ERV, also capable of producing large hail. For SAT and AUS
TAFs have indicated SHRAs through early afternoon with TEMPO TSRA
through the morning hours. Ceilings and visibilities in precip could
be temporarily reduced to MVFR to IFR. Farther west, DRT will remain
dry and VFR.

&&

.PREV DISCUSSION... /ISSUED 324 AM CST Sun Feb 25 2018/

SHORT TERM (Today through Monday)...
Strong surface based storms across Lavaca, DeWitt and Karnes
counties overnight are beginning to wane as the front slips a little
further south. Back to the southwest, a mid level shortwave is
approaching the region. There should be an expansion in the
development of showers through the remainder of the early morning
hours across the Winter Garden area then expanding quickly north and
east into portions of the Hill Country, I-35 corridor and eastward
near and after daybreak. Mid level lapse rates should be sufficient
to generate isolated to scattered embedded thunderstorms through the
day. Temperatures across the eastern 2/3rds of the eastern half of
the CWA will remain cool, in the low 60s under cloud cover, while
clearing across the western CWA this afternoon should allow temps to
climb into the mid 70s.

The disturbance will lift northeast of the area mid afternoon
through mid evening and showers and storms will end west to east.
Drier air should temporarily work into the region tonight through
Monday allowing for warmer high temperatures Monday afternoon across
the eastern half of the CWA.

LONG TERM (Monday Night through Saturday)...
Moisture surges back north into the area Monday night into Tuesday
morning with a warm front and another mid level shortwave from the
southwest. Should see patchy drizzle and fog developing southwest to
northeast overnight and into Tuesday morning along with isolated
showers. The better rain chances will likely shift northeast of the
CWA Tuesday afternoon as the mid level shortwave exits to the
northeast.

An upper level low will be digging into the desert Southwest Tuesday
night and the open and lift northeast on Wednesday and Wednesday
night through the Southern Plains. Ahead of it, models continue to
key in on a disturbance in the southwest flow aloft generating
chances for showers and storms Tuesday night across the western CWA
and into the Hill Country, then spreading northeast into portions of
the I-35 corridor on Wednesday.

Another cold front is advertised Wednesday night. The ECMWF has
trended toward the more progressive GFS and Canadian solutions. Low
chance PoPs are forecast for late Wednesday afternoon into Wednesday
night along and ahead of the front. Better chances will likely
remain northeast of the area with the stronger forcing.

This front will be a Pacific in nature, bringing slightly cooler and
drier conditions to the region for Thursday and Friday.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              64  48  70  54  70 /  60  10   0  20  50
Austin Bergstrom Intl Airport  64  44  69  53  71 /  60  10   0  20  50
New Braunfels Muni Airport     63  46  69  54  72 /  60  10   0  30  50
Burnet Muni Airport            63  44  67  51  68 /  40  -    0  20  50
Del Rio Intl Airport           75  47  72  56  75 /  -    0   0  20  20
Georgetown Muni Airport        63  43  67  52  68 /  50  10   0  20  50
Hondo Muni Airport             68  44  72  55  73 /  60   0  -   30  50
San Marcos Muni Airport        63  46  69  53  72 /  60  10   0  20  50
La Grange - Fayette Regional   64  50  69  56  73 /  70  20   0  20  50
San Antonio Intl Airport       65  48  70  55  72 /  60  -   -   30  50
Stinson Muni Airport           66  49  70  56  74 /  60  -   -   30  50

&&

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

&&

Mesoscale/Aviation...Runyen
Synoptic/Grids...Runyen

Hazardous weather outlook, Feb 25, 6:06 AM CST, 7 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Austin/San Antonio TX
606 AM CST Sun Feb 25 2018

TXZ171>173-183>194-202>209-217>225-228-261215-
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-
606 AM CST Sun Feb 25 2018

This Hazardous Weather Outlook is for South-Central Texas..

.DAY ONE...Today And Tonight.

Showers and isolated thunderstorms are expected early this morning
across the Winter Garden region and then expanding northeast into
portions of the Hill Country and along and east of I-35 near and
after sunrise. An isolated storm or two could produce large hail.
These showers and storms will end west to east during mid
afternoon through early evening hours.

No other hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

In the hours before

Special weather statement, Feb 25, 4:55 AM CST, 1 hour 18 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
455 AM CST SUN FEB 25 2018

TXZ203-204-218-219-251145-
Frio TX-Uvalde TX-Medina TX-Zavala TX-
455 AM CST SUN FEB 25 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN MEDINA...
SOUTHEASTERN UVALDE...NORTHEASTERN ZAVALA AND NORTHWESTERN FRIO
COUNTIES UNTIL 545 AM CST...

At 455 AM CST, Doppler radar was tracking a strong thunderstorm 12
miles northwest of Frio Town, or 15 miles northeast of Batesville,
moving north at 35 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Hondo, Sabinal and D'Hanis.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
office in Austin San Antonio.

&&

LAT...LON 2895 9937 2900 9957 2953 9954 2943 9911
TIME...MOT...LOC 1055Z 195DEG 35KT 2913 9947

TB3

Local storm report, Feb 25, 5:53 AM CST, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
553 AM CST SUN FEB 25 2018

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

0550 AM     HAIL             JOURDANTON              28.91N 98.54W
02/25/2018  M1.00 INCH       ATASCOSA           TX   PUBLIC

&&

JR

Local storm report, Feb 25, 5:56 AM CST, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
556 AM CST SUN FEB 25 2018

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

0550 AM     HAIL             TARPLEY                 29.63N 99.28W
02/25/2018  M0.50 INCH       BANDERA            TX   TRAINED SPOTTER

&&

JR

Local storm report, Feb 25, 6:03 AM CST, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
603 AM CST SUN FEB 25 2018

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

0552 AM     HAIL             JOURDANTON              28.91N 98.54W
02/25/2018  M1.75 INCH       ATASCOSA           TX   PUBLIC

&&

JR

Local storm report, Feb 25, 6:10 AM CST, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
610 AM CST SUN FEB 25 2018

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

0604 AM     HAIL             4 ENE PLEASANTON        28.99N 98.43W
02/25/2018  M0.75 INCH       ATASCOSA           TX   TRAINED SPOTTER

&&

JR

Special weather statement, Feb 25, 6:13 AM CST, 0 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
613 AM CST SUN FEB 25 2018

TXZ186>189-251300-
Gillespie TX-Kerr TX-Bandera TX-Kendall TX-
613 AM CST SUN FEB 25 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN BANDERA...
SOUTHEASTERN KERR...SOUTHWESTERN GILLESPIE AND NORTHWESTERN KENDALL
COUNTIES UNTIL 700 AM CST...

At 613 AM CST, Doppler radar was tracking a strong thunderstorm near
Bandera, moving northeast at 45 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Medina, Kerrville, Comfort, Bandera, Camp Verde, Tivydale,
Kerrville-Schreiner Park, Old Tunnel State Park, Bankersmith, Cypress
Creek, Center Point, Waring and Grapetown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
office in Austin San Antonio.

&&

LAT...LON 2968 9904 2975 9929 3032 9916 3011 9860
TIME...MOT...LOC 1213Z 207DEG 38KT 2980 9910

TB3

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 24, 6:21 PM CST	Special Weather Statement	EWX	Burnet	39 min
Feb 25, 12:11 AM CST	Special Weather Statement	EWX	DeWitt	34 min
Feb 25, 12:50 AM CST	Special Weather Statement	EWX	Lavaca	40 min
Feb 25, 1:48 AM CST	Special Weather Statement	EWX	Wilson	42 min
Feb 25, 2:31 AM CST	Special Weather Statement	EWX	DeWitt	44 min
Feb 25, 3:42 AM CST	Special Weather Statement	EWX	Zavala	48 min
Feb 25, 4:30 AM CST	Severe Thunderstorm Warning	EWX	Frio, Zavala	30 min
Feb 25, 4:43 AM CST	Severe Thunderstorm Warning	EWX	Frio	47 min
Feb 25, 4:55 AM CST	Special Weather Statement	EWX	Medina	50 min
Feb 25, 5:04 AM CST	Severe Thunderstorm Warning	EWX	Atascosa, Frio	41 min
Feb 25, 5:30 AM CST	Severe Thunderstorm Warning	EWX	Bandera, Medina	45 min
Feb 25, 5:41 AM CST	Severe Thunderstorm Warning	EWX	Atascosa	49 min
Feb 25, 6:10 AM CST	Severe Thunderstorm Warning	EWX	Atascosa, Karnes, Wilson	50 min
Feb 25, 6:35 AM CST	Special Weather Statement	EWX	Caldwell	40 min
Feb 25, 6:43 AM CST	Severe Thunderstorm Warning	EWX	DeWitt, Gonzales, Karnes, Wilson	32 min
Feb 25, 6:55 AM CST	Special Weather Statement	EWX	Llano	50 min
Feb 25, 7:07 AM CST	Special Weather Statement	EWX	DeWitt	23 min
Feb 25, 11:11 AM CST	Special Weather Statement	EWX	Williamson	34 min
Feb 25, 11:44 AM CST	Special Weather Statement	EWX	Guadalupe	31 min
Feb 25, 11:54 AM CST	Special Weather Statement	EWX	Williamson	36 min
Feb 25, 12:13 PM CST	Special Weather Statement	EWX	Caldwell	32 min
Feb 25, 12:49 PM CST	Special Weather Statement	EWX	Bastrop	41 min
Feb 25, 12:50 PM CST	Special Weather Statement	EWX	Karnes	40 min
Feb 25, 1:31 PM CST	Special Weather Statement	EWX	Fayette	44 min

Nearby

Special Weather Statements in Texas, 2018 Every special weather statement in 2018

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.