Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Lubbock, TX

July 25, 2021Castro County, Texas

NWS Lubbock, TX issued this special weather statement at Jul 25, 2021, 7:04 PM CDT for Castro County, Texas. It was in force for 26 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
Jul 25, 2021, 7:04 PM CDT (00:04 UTC)
Expired
Jul 25, 2021, 7:30 PM CDT
In force
26 min
Issued by
NWS Lubbock, TX

County Castro County, TX

The radar

The Amarillo radar (KAMA), 85 km from the middle of the area, began a volume at 00:04 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

Amarillo Airport, TX (KAMA), launched 00:00Z, 0.1 hours before the alert went out and 85 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-pSkew-T log-p diagram, Amarillo Airport, TX at 00:00Z on 2021-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 752 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 00:00Z on 2021-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
752 J/kg
Mixed-layer CIN
-112 J/kg
Mixed-layer LCL
2129 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
69 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 Lubbock, TX wrote its last area forecast discussion before this special weather statement went out at Jul 25, 6:19 PM CDT, 45 minutes earlier.

Area forecast discussion, Jul 25, 6:19 PM CDT, 45 minutes before
Area Forecast Discussion
National Weather Service Lubbock TX
619 PM CDT Sun Jul 25 2021

.AVIATION...
Scattered thunderstorms may affect KLBB and/or continue to affect
KPVW through 26/03Z. Pilots should expect strong downburst winds
beneath cloud base, confirmed by a surface gust of 42 kt by the
KPVW METAR at 2235Z. PIREP from 2305Z out of KLBB reported
moderate chop at FL340, and a convective SIGMET remains in effect
through 26/0055Z for all three terminals. A few cumulonimbi may
have maximum tops to 50 kft with hail up to 1 inch aloft.
Thunderstorms should quickly wane in intensity and coverage after
dark, with VFR prevailing otherwise for the TAF period.

Sincavage

&&

.PREV DISCUSSION... /issued 221 PM CDT Sun Jul 25 2021/

SHORT TERM...
Westerly surface winds across the South Plains early this afternoon
should back to the south by 21z. Weak inhibition should erode
allowing widely scattered showers/thunder to develop as advertised
by CAMS taking advantage of around 1000 J/KG MLCAPE. Favored area of
concentration according to the HRRR and the 12z Tech WRF run is from
the Caprock Canyon/nrn Rolling Plains region, developing farther
south/southwest along an axis through the central South Plains into
areas S/SW of Lubbock as cap erodes around 21z (4 pm). Given weak
winds aloft and fairly high PWATs (1.3 - 1.7 inches), isolated cells
could produce some brief heavy rain. along with gusty winds and
occasional lightning.

Activity should decrease rapidly with loss of heating around 01-02z
(8-9 pm), although did keep slight chance pops across the SE
Panhandle overnight. Similar situation with slightly less coverage
on Monday, and much less activity across the northeast where pops
fall below mentionable. Temperatures/dewpoints near persistence,
which are also very near climatological averages. James

LONG TERM...
We'll keep a slight chance of showers and t-storms going Monday
evening, as models continue to show some kind of convectively
induced mesoscale vortmax sliding southwest from the Panhandles
into eastern NM by evening, and this may generate enough lift
despite evening stabilization to maintain any ongoing activity.
Tuesday appears to be mostly dry however, with the upper high in
close proximity and the mid-level moisture plume shunted farther
north into the plains. Tuesday's highs should climb a few degrees
area-wide with mid to upper 90s on the Caprock and upper 90s to
around 103 or 104 in the Rolling Plains.

By Wednesday, the center of the upper-high should be in the
central plains and this should place our forecast area more
squarely under easterly flow aloft. Thus we expect daytime
temperatures to back off some from Tuesday's readings. In
addition, a weak disturbance undercutting the ridge will bring
some mid-level moisture back into the area. The ECMWF is a little
weaker and farther south than the GFS with this westward-moving
wave, and the forecast remains dry for now, but there is a chance
that we might need to raise PoPs across the south.

Beyond Wednesday, the upper-ridge looks like it will expand
south and east, becoming centered roughly over north-central Okla
by Friday. This should bring hot (the heat does not appear
exceptional at this time) and mostly dry weather to the forecast
area to close out July.

&&

.LUB WATCHES/WARNINGS/ADVISORIES...
None.
&&

09
Hazardous weather outlook, Jul 25, 1:36 PM CDT, 5 hours 28 minutes before
Hazardous Weather Outlook...UPDATED
National Weather Service Lubbock TX
136 PM CDT Sun Jul 25 2021

TXZ021>044-261845-
Parmer-Castro-Swisher-Briscoe-Hall-Childress-Bailey-Lamb-Hale-Floyd-
Motley-Cottle-Cochran-Hockley-Lubbock-Crosby-Dickens-King-Yoakum-
Terry-Lynn-Garza-Kent-Stonewall-
136 PM CDT Sun Jul 25 2021

This Hazardous Weather Outlook is for the South Plains, Rolling
Plains and the far Southern Texas Panhandle.

.DAY ONE...This afternoon and tonight.

Isolated to widely scattered thunderstorms are expected across the
outlook area this afternoon into this evening, with the most coverage
found over the far southern Panhandle into northern portions of the
South Plains and Rolling Plains. The strongest storms that develop
will be accompanied by frequent lightning, gusty winds, and locally
heavy rainfall.

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

Slim storm chances will exist Monday afternoon and evening, favoring
the southern Texas Panhandle and northwestern South Plains. Brief
downpours and strong outflow winds will accompany the most intense
activity.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Jul 25, 5:21 PM CDT, 1 hour 43 minutes before
Special Weather Statement
National Weather Service Lubbock TX
521 PM CDT Sun Jul 25 2021

TXZ029-252245-
Hale TX-
521 PM CDT Sun Jul 25 2021

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN FLOYD AND NORTHEASTERN
HALE COUNTIES UNTIL 545 PM CDT...

At 520 PM CDT, Doppler radar was tracking a strong thunderstorm near
Plainview, moving north at 15 mph.

Pea size hail and wind gusts of 50 to 55 mph will be possible with
this storm. At 515 PM, a wind gust of 48 mph was measured at the
West Texas Mesonet near Plainview.

Locations impacted include...
Plainview and Seth Ward.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

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

&&

LAT...LON 3418 10156 3407 10157 3406 10179 3426 10185
      3431 10160 3431 10157
TIME...MOT...LOC 2220Z 171DEG 12KT 3415 10170

SINCAVAGE
Special weather statement, Jul 25, 5:24 PM CDT, 1 hour 40 minutes before
Special Weather Statement
National Weather Service Lubbock TX
524 PM CDT Sun Jul 25 2021

TXZ030-036-252245-
Floyd TX-Crosby TX-
524 PM CDT Sun Jul 25 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN FLOYD AND
NORTHWESTERN CROSBY COUNTIES UNTIL 545 PM CDT...

At 524 PM CDT, Doppler radar was tracking a strong thunderstorm over
Cone, or 12 miles south of Floydada, moving north at 10 mph.

Pea size hail and wind gusts of 50 to 55 mph will be possible with
this storm.

Locations impacted include...
Cone.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

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

&&

LAT...LON 3373 10132 3377 10149 3392 10147 3389 10123
TIME...MOT...LOC 2224Z 186DEG 8KT 3382 10140

SINCAVAGE
Special weather statement, Jul 25, 5:45 PM CDT, 1 hour 19 minutes before
Special Weather Statement
National Weather Service Lubbock TX
545 PM CDT Sun Jul 25 2021

TXZ023-029-030-252315-
Floyd TX-Swisher TX-Hale TX-
545 PM CDT Sun Jul 25 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN FLOYD...NORTHEASTERN
HALE AND SOUTHEASTERN SWISHER COUNTIES UNTIL 615 PM CDT...

At 545 PM CDT, Doppler radar was tracking a strong thunderstorm 4
miles northeast of Plainview, moving northeast at 15 mph.

Pea size hail and wind gusts of 50 to 55 mph will be possible with
this storm.

Locations impacted include...
Plainview, Kress, Claytonville, and Seth Ward.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

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

&&

LAT...LON 3429 10148 3413 10155 3417 10180 3440 10181
      3441 10148
TIME...MOT...LOC 2245Z 207DEG 11KT 3423 10166

SINCAVAGE
Special weather statement, Jul 25, 6:30 PM CDT, 34 minutes before
Special Weather Statement
National Weather Service Lubbock TX
630 PM CDT Sun Jul 25 2021

TXZ028-029-260000-
Lamb TX-Hale TX-
630 PM CDT Sun Jul 25 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN HALE AND
SOUTHEASTERN LAMB COUNTIES UNTIL 700 PM CDT...

At 629 PM CDT, Doppler radar was tracking a strong thunderstorm over
Spade, or 11 miles east of Littlefield, moving north at 5 mph.

Pea size hail and wind gusts of 50 to 55 mph will be possible with
this storm.

Locations impacted include...
Cotton Center, Fieldton, and Spade.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

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

&&

LAT...LON 3407 10198 3384 10197 3382 10216 3383 10221
      3406 10226
TIME...MOT...LOC 2329Z 177DEG 6KT 3393 10214

SINCAVAGE
Special weather statement, Jul 25, 7:02 PM CDT, 2 minutes before
Special Weather Statement
National Weather Service Lubbock TX
702 PM CDT Sun Jul 25 2021

TXZ022-023-028-029-260030-
Swisher TX-Castro TX-Lamb TX-Hale TX-
702 PM CDT Sun Jul 25 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN HALE...SOUTHEASTERN
CASTRO...SOUTHWESTERN SWISHER AND EAST CENTRAL LAMB COUNTIES UNTIL
730 PM CDT...

At 701 PM CDT, Doppler radar was tracking a strong thunderstorm 5
miles southeast of Olton, moving northeast at 20 mph.

Pea size hail and wind gusts of 50 to 55 mph will be possible with
this storm.

Locations impacted include...
Olton, Halfway, and Edmonson.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm 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.

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

&&

LAT...LON 3402 10200 3411 10219 3441 10203 3427 10176
TIME...MOT...LOC 0001Z 211DEG 18KT 3413 10205

SINCAVAGE
Special weather statement, Jul 25, 7:04 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 25, 7:02 PM CDTSpecial Weather StatementLUBHale28 min
Jul 25, 7:15 PM CDTAreal Flood AdvisoryLUBCastro, Hale, Lamb, Parmer, Swisher70 min
Jul 25, 7:17 PM CDTSpecial Weather StatementLUBLubbock28 min
Jul 25, 7:26 PM CDTSpecial Weather StatementLUBTerry34 min
Jul 25, 7:53 PM CDTSpecial Weather StatementLUBTerry37 min
Jul 26, 4:15 PM CDTAreal Flood AdvisoryLUBBailey2 hr
Jul 26, 4:26 PM CDTSpecial Weather StatementLUBBailey34 min
Jul 26, 5:31 PM CDTSpecial Weather StatementLUBCastro14 min

Nearby

Special Weather Statements in Texas, 2021Every 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.