Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS San Angelo, TX

August 17, 2021Kimble County, Texas

NWS San Angelo, TX issued this special weather statement at Aug 17, 2021, 1:50 PM CDT for Kimble County, Texas. It was in force for 40 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: Aug 17, 2021, 1:50 PM CDT (18:50 UTC)
Expired: Aug 17, 2021, 2:30 PM CDT
In force: 40 min
Issued by: NWS San Angelo, TX
Hail: 0.00 in
Wind: 50

County Kimble County, TX

The radar

The San Angelo radar (KSJT), 111 km from the middle of the area, began a volume at 18:50 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, 6.8 hours before the alert went out and 139 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: 1588 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 890 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

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 San Angelo, TX wrote its last area forecast discussion before this special weather statement went out at Aug 17, 11:59 AM CDT, 1 hour 51 minutes earlier.

Area forecast discussion, Aug 17, 11:59 AM CDT, 1 hour 51 minutes before

Area Forecast Discussion
National Weather Service San Angelo TX
1159 AM CDT Tue Aug 17 2021

...New AVIATION...

.SHORT TERM...
(Today and tonight)
Issued at 404 AM CDT Tue Aug 17 2021

Early this morning scattered to numerous showers along with a few
lightning strikes are ongoing from the Trans Pecos and Permian
Basin eastward into western portions of the Concho Valley. All of
this activity is developing ahead of a shortwave trough. The
combination of the upper level trough and sufficient instability
will lead to scattered to numerous showers and thunderstorms
continuing this morning and into the afternoon. In addition, a
very moist airmass (precipitable water values of 1.75-2.00 inches
per forecast soundings) will lead to the possibility of heavy
rainfall which may result in localized flash flooding concerns.
Rain chances continue overnight as another disturbance may impact
the region. Cloud cover and showers/storms will hold temperatures
well below normal this afternoon- mainly in the mid to upper 80s.

&&

.LONG TERM...
(Wednesday through Monday)
Issued at 438 AM CDT Tue Aug 17 2021

The main concern in the long term will be continued heavy rain
with localized areas of flash flooding Wednesday into early
Thursday.

An upper trough across the Central Plains extending back into
north Texas will continue to bring instability and a good chance
of rain to the area through Thursday. Precipitable water values
remain high, and numerous outflow boundaries will be across the
area from convection on Tuesday, so expect thunderstorms to be
rather widespread on Wednesday. Rain chances start to decrease
Thursday as the upper trough weakens and heads east, but still
expecting a decent chance of diurnally driven thunderstorms for
Thursday afternoon. A ridge begins to build back in to south and
west Texas for Friday, with models trending warmer and drier for
the weekend into early next week.

&&

.AVIATION...
(18Z TAFS)
Issued at 1158 AM CDT Tue Aug 17 2021

Widespread SHRA and scattered-to-isolated TSRA, with
mainly VFR to locally MVFR/IFR conditions, may decrease
in coverage after 21Z, before potentially another round
of widespread SHRA/TSRA occurs between 00Z Wed and 12Z
Wed. Confidence in locations impacted is low. Heavier
SHRA/TSRA can result in tempo LIFR/VLIFR conditions.
Also, between 07Z Wed and 15Z Wed, there will likely
be MVFR to locally IFR CIGs developing across much of
the forecast area. These CIGs may dissipate between
15Z Wed and 18Z Wed. 12Z Wed to 18Z Wed, expect SHRA/TSRA to
decrease in coverage/intensity and mainly impact the northeastern
counties. Winds will mostly be less than 10 KT through 18Z Wed.

&&

.PRELIMINARY POINT TEMPS/POPS...
Abilene 	 86  69  88  73 /  60  70  70  30
San Angelo 	 84  69  89  73 / 100  60  60  30
Junction 	 87  71  91  73 /  60  60  60  20
Brownwood 	 87  71  88  74 /  70  70  70  30
Sweetwater 	 84  69  88  72 /  60  60  60  30
Ozona      	 83  69  88  72 /  70  50  50  20

&&

.SJT WATCHES/WARNINGS/ADVISORIES...
None.
&&

SHORT TERM...42
LONG TERM....08
AVIATION...SJH

Hazardous weather outlook, Aug 17, 3:42 AM CDT, 10 hours 8 minutes before

Hazardous Weather Outlook
National Weather Service San Angelo TX
342 AM CDT Tue Aug 17 2021

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-180845-
Fisher-Nolan-Sterling-Coke-Runnels-Irion-Tom Green-Concho-
Crockett-Schleicher-Sutton-Haskell-Throckmorton-Jones-Shackelford-
Taylor-Callahan-Coleman-Brown-McCulloch-San Saba-Menard-Kimble-
Mason-
342 AM CDT Tue Aug 17 2021

This Hazardous Weather Outlook is for portions of west central
Texas.

.DAY ONE...Today and Tonight

Scattered showers and thunderstorms are possible today and tonight.
The main hazards will be heavy rainfall which could lead to
localized flooding and dangerous lightning.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Scattered showers and thunderstorms are again possible on
Wednesday. The main hazards will be heavy rainfall which could lead
to localized flooding and dangerous lightning.

.SPOTTER INFORMATION STATEMENT...
Spotter activation is not anticipated at this time.

In the hours before

Local storm report, Aug 17, 8:46 AM CDT, 5 hours 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
846 AM CDT TUE AUG 17 2021

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

0843 AM     FLASH FLOOD      2 WSW SAN ANGELO        31.43N 100.48W
08/17/2021                   TOM GREEN          TX   LAW ENFORCEMENT

            THE SAN ANGELO POLICE DEPARTMENT REPORTED
            THAT MULTIPLE ROADS ACROSS THE CITY REMAIN
            FLOODED.

&&

CRD

Local storm report, Aug 17, 8:48 AM CDT, 5 hours 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
848 AM CDT TUE AUG 17 2021

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

0825 AM     FLASH FLOOD      ARDEN                   31.44N 100.76W
08/17/2021                   IRION              TX   LAW ENFORCEMENT

            THE TOM GREEN COUNTY SHERIFFS OFFICE
            REPORTED FLOODED ROADS IN THE TOWN OF ARDEN.

&&

CRD

Local storm report, Aug 17, 8:49 AM CDT, 5 hours 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
849 AM CDT TUE AUG 17 2021

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

0836 AM     FLASH FLOOD      5 WNW SAN ANGELO        31.47N 100.54W
08/17/2021                   TOM GREEN          TX   LAW ENFORCEMENT

            THE TOM GREEN SHERIFFS OFFICE REPORTED
            WIDESPREAD FLOODING ALONG FM 2288.

&&

CRD

Local storm report, Aug 17, 9:26 AM CDT, 4 hours 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
926 AM CDT TUE AUG 17 2021

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

0855 AM     FLASH FLOOD      MERTZON                 31.26N 100.82W
08/17/2021                   IRION              TX   PUBLIC

            A SOCIAL MEDIA POST INDICATED SEVERAL
            STREETS AND LOW WATER CROSSINGS FLOODED IN
            MERTZON.

&&

CRD

Local storm report, Aug 17, 11:19 AM CDT, 2 hours 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1119 AM CDT TUE AUG 17 2021

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

1112 AM     FLASH FLOOD      1 SSE SAN ANGELO        31.43N 100.45W
08/17/2021                   TOM GREEN          TX   NWS EMPLOYEE

            A NATIONAL WEATHER SERVICE EMPLOYEE REPORTED
            THAT SOUTH JACKSON IS BLOCKED OFF, DUE TO
            FLOODING. IN ADDITION, A VIDEO ON FACEBOOK
            SHOWED A HIGH WATER RESCUE AT THE SAME
            LOCATION.

&&

CRD

Special weather statement, Aug 17, 1:50 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service San Angelo TX
150 PM CDT Tue Aug 17 2021

TXZ078-169-171930-
Kimble TX-Sutton TX-
150 PM CDT Tue Aug 17 2021

...A strong thunderstorm will impact portions of southwestern Kimble
and southeastern Sutton Counties through 230 PM CDT...

At 149 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles west of Roosevelt, moving east 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...
Telegraph, Roosevelt, Cleo and I-10 Near The Sutton-Kimble County
Line.

This includes Interstate 10 between Mile Markers 425 and 452.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

&&

LAT...LON 3036 10026 3055 10026 3062 9981 3029 9982
TIME...MOT...LOC 1849Z 271DEG 15KT 3046 10017

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

The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 17, 5:34 AM CDT	Areal Flood Advisory	SJT	Irion, Sterling, Tom Green	2 hr
Aug 17, 6:08 AM CDT	Flash Flood Warning	SJT	Irion, Tom Green	112 min
Aug 17, 6:55 AM CDT	Flash Flood Warning Considerable damage threat	SJT	Tom Green	110 min
Aug 17, 7:10 AM CDT	Flash Flood Warning Considerable damage threat	SJT	Irion	3 hr
Aug 17, 7:33 AM CDT	Flash Flood Warning Considerable damage threat	SJT	Irion, Tom Green	3 hr
Aug 17, 7:47 AM CDT	Flash Flood Warning Considerable damage threat	SJT	Irion, Tom Green	3 hr
Aug 17, 8:39 AM CDT	Flash Flood Warning Considerable damage threat	SJT	Tom Green	111 min
Aug 17, 8:55 AM CDT	Flash Flood Warning Considerable damage threat	SJT	Tom Green	3 hr
Aug 17, 9:04 AM CDT	Areal Flood Advisory	SJT	Schleicher	3 hr
Aug 17, 9:36 AM CDT	Flash Flood Warning Considerable damage threat	SJT	Schleicher	3 hr
Aug 17, 9:54 AM CDT	River Flood Warning	SJT	Irion, Tom Green	22 hr
Aug 17, 10:31 AM CDT	Areal Flood Warning	SJT	Irion, Tom Green	3 hr
Aug 17, 10:36 AM CDT	Areal Flood Advisory	SJT	Concho, Menard	3 hr
Aug 17, 11:10 AM CDT	Areal Flood Advisory	SJT	McCulloch	3 hr
Aug 17, 12:19 PM CDT	Flash Flood Warning Considerable damage threat	SJT	Schleicher	3 hr
Aug 17, 12:34 PM CDT	Flash Flood Watch	SJT	Coke, Concho, Crockett, Irion, Menard, Runnels and 4 more	16 hr
Aug 17, 12:49 PM CDT	Flash Flood Warning Considerable damage threat	SJT	Schleicher, Sutton	3 hr
Aug 17, 2:26 PM CDT	Flash Flood Warning Considerable damage threat	SJT	Kimble, Sutton	2 hr
Aug 17, 3:10 PM CDT	Areal Flood Warning	SJT	Irion, Tom Green	6 hr
Aug 17, 4:24 PM CDT	Flash Flood Warning	SJT	Kimble	111 min
Aug 17, 6:33 PM CDT	River Flood Warning	SJT	Tom Green	10 hr

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.