Texas, 2019

Damaging Wind in Texas, July 30, 2019

July 30, 2019 · NWS FWD · 1 event in 1 county or zone

A weak frontal boundary resulted in isolated thunderstorms south of the Interstate 20 corridor.

Where it happened

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  • Cold
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The toll

Deaths
0
Injuries
0
Property damage
$2,000
Crop damage
None recorded
Events
1

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS FWD wrote it up.

A weak frontal boundary resulted in isolated thunderstorms south of the Interstate 20 corridor.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Fort Worth, TX wrote its last area forecast discussion before the first event at Jul 30, 2:52 PM CST, 1 hour 48 minutes earlier.

Area forecast discussion, Jul 30, 2:52 PM CST, 1 hour 48 minutes before
Area Forecast Discussion
National Weather Service Fort Worth TX
352 PM CDT Tue Jul 30 2019

.SHORT TERM...
/Through Tonight/

While most areas across north and central TX will remain rain
free through this afternoon and evening and into tonight, some
isolated showers and thunderstorms are possible mainly south of
I-20.

Seasonably hot and humid conditions are observed across north and
central TX this afternoon. Temperatures are in the upper 90s and
some areas have reached 100 degrees including DFW, which eclipsed
the century mark for the first time this year. Surface winds are
now solidly out of the north across north TX with areas in central
TX beginning to make the transition from southerly to northerly
winds as a surface boundary slides southward. This boundary has
provided enough lift to result in isolated showers and
thunderstorms this afternoon south of I-20.

This isolated shower and thunderstorm activity is expected to
continue for areas south of I-20 through the afternoon and into
the evening with activity quickly diminishing after sunset.
Instability is very limited so severe storms are generally not
expected but given how toasty the temperatures are there is the
potential for an isolated storm to produce gusty downburst winds.

Hoeth

&&

.LONG TERM...
/Wednesday through Monday/

Mostly tranquil and rain-free weather is expected through a
majority of the long term forecast period. The exception will be
early Wednesday morning and again on Saturday and Sunday where low
rain/storm chances are advertised.

A mild morning is on tap for a majority of North and Central Texas
with most locales only falling into the 70s for overnight lows. A
few of the sheltered spots may bottom out in the upper 60s. RAP
isentropic progs indicate some gradual ascent atop the surface
layer along the 305-310K theta surface in the wake of this
afternoon's wind shift and there could be just enough low level
saturation to produce some drizzle or very light rain across
Central Texas. I'll advertise a 15 PoP with a mention of light
rain across the Brazos Valley, but widespread measurable rainfall
appears most unlikely. A repeat of patchy dense fog is not
expected as the surface trough responsible for the reservoir of
low level moisture will be quite diffuse.

After the risk for Wednesday morning rain showers across Central
and East Texas...summer heat will continue with upper 90s to
triple digit heat likely overspreading most of North and Central
Texas for afternoon highs. The mid-level ridge that migrates
eastward over the southern Plains should ensure that the risk for
any rain/storms remains near zero. Afternoon dewpoints should
remain in the upper 60s to low 70s through the end of the
week. While it won't feel pleasant during peak heating...it
appears that we will remain just shy of our heat advisory
criteria. Regardless, it will still feel quite hot outside and
heat safety protocols should continue to be exercised.

The weekend will bring about a slight change to the upper air
pattern. The mid-level ridge will slowly creep back towards the
west and this will result in slight northerly flow aloft. Not too
dissimilar from this past Monday...there will be the potential
for some showers and isolated storms to drift southward out of
Oklahoma into North Texas. Instability forecasts do not indicate
an overly impressive profile...but with the height gradient
tightening between the ridge to the west and the upper trough to
the east...this could increase deep layer shear values up to
around 30 knots. This may foster some loosely organized multicell
line clusters capable of some gusty winds. The best time frame for
any showers and storms will be late Friday afternoon and again on
Saturday and Sunday. The risk for rain/storms and increased cloud
cover may hamper diabatic heating...especially east of I-35...and
temperatures are forecast to be below normal. If the latest GFS
is to verify...very cool conditions...highs only in the 80s...will
be possible. At this time, I feel that the GFS is a little too
aggressive with its development of a surface low down across the
Concho Valley---thus inducing stronger CAA. For now, will
undercut blended guidance given that we could see at least one day
of slightly more northerly flow.

Beyond the weekend, there is a signal that the surface flow will
remain more easterly. This should equate to below normal
temperatures at least through Tuesday with a slight warming trend
thereafter. Again, if the GFS is to be believed, conditions could
be quite a bit cooler as more northeasterly winds would likely
instigate a larger magnitude of cool/dry air advection.

Bain

&&

.AVIATION... /Issued 102 PM CDT Tue Jul 30 2019/
/18Z TAFs/

No significant changes to the TAFs with this afternoon update for
the metroplex sites. For ACT, bumped up the timing of the VCSH
and tightened the window of opportunity a bit with the potential
impact period narrowed down to 00Z-06Z now. This is based on
already developing CU field in Central TX and latest meso model
guidance showing isolated to scattered SHRA activity prevalent in
the late afternoon and evening hours.

Currently observed wind speeds at DFW and surrounding TAFs are
slightly above what is in the TAF but the thinking is that the
current increase in wind speeds is temporary due to the initial
push of the front that has recently swung the winds around from
WSWly to NNWly over the past couple of hours. Surrounding obs to
the north of the front are all showing light winds and it is
expected that the winds at DFW and surrounding TAFs will decrease
in the next hour or so and maintain a generally N to NNEly
direction through around 02Z at which point the winds will swing
around to the E and SE late this evening into the overnight hours.

Maintained VFR conditions at metroplex sites through the period.
The only potential area of concern would be any late afternoon or
evening showers today in the 20Z-01Z time period that may pose a
VCSH potential. HRRR guidance is suggesting a few showers may be
somewhat close but was not confident enough that this will
materialize to include in the TAF and will handle any developing
SHRA with afternoon updates. Most of the CU and low level
convergence is focused south of I-20 so that is where the bulk of
this afternoon and evening's ISO to SCT SHRA activity is
expected.

Hoeth

&&

.PRELIMINARY POINT TEMPS/POPS...
Dallas-Ft. Worth    79  99  78  98  78 /   0   0   0   0   0
Waco                75  98  76  98  76 /  10   5   0   0   0
Paris               74  93  73  92  73 /   0   0   0   5   0
Denton              75  98  77  97  76 /   0   0   0   0   0
McKinney            75  96  75  96  76 /   0   0   0   0   0
Dallas              80  99  79  98  79 /   5   0   0   0   0
Terrell             76  97  75  96  76 /   5   0   0   0   0
Corsicana           75  95  75  95  75 /  20   5   0   0   0
Temple              74  98  75  97  74 /  10   5   0   0   0
Mineral Wells       74  99  74  98  74 /   0   0   0   0   0

&&

.FWD WATCHES/WARNINGS/ADVISORIES...
None.
&&

99/24
Hazardous weather outlook, Jul 30, 2:00 PM CST, 2 hours 40 minutes before
Hazardous Weather Outlook...UPDATED
National Weather Service Fort Worth TX
300 PM CDT Tue Jul 30 2019

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-311230-
Montague-Cooke-Grayson-Fannin-Lamar-Young-Jack-Wise-Denton-Collin-
Hunt-Delta-Hopkins-Stephens-Palo Pinto-Parker-Tarrant-Dallas-
Rockwall-Kaufman-Van Zandt-Rains-Eastland-Erath-Hood-Somervell-
Johnson-Ellis-Henderson-Comanche-Mills-Hamilton-Bosque-Hill-Navarro-
Freestone-Anderson-Lampasas-Coryell-Bell-McLennan-Falls-Limestone-
Leon-Milam-Robertson-
300 PM CDT Tue Jul 30 2019

This Hazardous Weather Outlook is for North and Central Texas.

.DAY ONE...Tonight.

Lightning will be the primary hazard with any isolated thunderstorms
that develop through this evening. An isolated storm or two may also
contain gusty winds. The activity will impact areas mainly south of
the I-20 corridor and dissipate shortly after sunset this evening
with the loss of daytime heating.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Low thunderstorm chances will return Friday night and continue
through the upcoming weekend.

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

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

1 thunderstorm wind. Local standard time, as filed.

Thunderstorm Wind, Limestone

When
July 30, 4:40 PM CST
Where
Limestone County, Thornton
Measured
43 kt (49 mph) estimated gust
Property damage
$2,000
Reported by
Trained Spotter
Coordinates
31.400, -96.580

A trained spotter reported three power poles down in the city of Thornton, TX. A sheet metal carport was also damaged to the north of Thornton along with some tree branches.

What these are

Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Texas in 2019Every state in 2019This day in weather historyWarnings in Texas, July 2019

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 845634.