Texas, 2021

Flash Flood in Texas, August 14, 2021

August 14, 2021 · NWS EPZ · 1 event in 1 county or zone

A third day of very deep moisture across the Borderland brought heavy rain to the Canutillo area and additional flash flooding after 5 to 7 inches of rain fell in the previous 3 days.

Where it happened

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  • Hail
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The toll

Deaths
0
Injuries
0
Property damage
None recorded
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 EPZ wrote it up.

A third day of very deep moisture across the Borderland brought heavy rain to the Canutillo area and additional flash flooding after 5 to 7 inches of rain fell in the previous 3 days.

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 El Paso, TX wrote its last area forecast discussion before the first event at Aug 14, 5:09 AM MST, 5 hours 6 minutes earlier.

Area forecast discussion, Aug 14, 5:09 AM MST, 5 hours 6 minutes before
Area Forecast Discussion
National Weather Service El Paso TX/Santa Teresa NM
609 AM MDT Sat Aug 14 2021

.UPDATE...12Z TAF ISSUANCE...
Plenty of nocturnal shower and thunderstorm activity across Far
West Texas and Southern New Mexico as we head into the early
morning hours. Scattered showers and isolated thunderstorms are
producing MVFR to IRF conditions with rain shafts lowering VSBY to
1-3 SM and lowering CIGS to 2-3kft AGL. Plenty of mtn obscurations
too. These will likely diminish in coverage through the morning,
but the diurnal heat cycle should generate a new batch of showers
and thunderstorms by late AM/early PM. Thus some breaks in the
clouds, but still plenty through the period. Winds generally E in
the 5-10kt range.

&&

.PREV DISCUSSION...406 AM MDT Sat Aug 14 2021...

.SYNOPSIS...
Areas of heavy rain and isolated instances of flash flooding
remain possible this afternoon and into the overnight across much
of the area, with the threat shifting to the international border
into Sunday. Scattered thunderstorms remain possible into the
early to middle portions of next week, especially over area
mountains, with temperatures between 86 and 92 degrees generally.

&&

.DISCUSSION...
.SHORT TERM...
It's August, and we are in the heart of the traditional SW monsoon
season. The current and projected PWAT values across the CWFA are
1.50" to 1.80" according to model consensus. The surface dewpoints
are in the mid-60s tonight, and the models keep them in the 60s
through the day today. Both of these numbers (PWATs and dewpoints)
are above average. This means the atmosphere across the Borderland
is ripe with moisture for more storms and rain. The synoptic pattern
across the southwest doesn't really provide the region with any
large scale forcing, or any features that would promote or focus
storm development over our region, but we don't/won't need that to
generate another round of showers and thunderstorms today. All that
is needed, with this moist and conditionally unstable airmass, will
be forced upslope flow over higher terrain, and surface heating,
with any breaks in the abundant cloud cover. The day will overall
stay cooler than average, but also quite muggy with the high
humidity.

With all the moisture, clouds will likely win over sunshine. Any
sunshine we do get will feedback with more cloud development. Given
the very moist atmosphere, we have high POPS with scattered to
numerous showers and thunderstorms in for forecast for all areas
again today and well into the evening tonight. Storms should be
tracking from SSE to NNW today at a relatively slow rate of 5-15
mph. With much of the area having already seen moderate to heavy
rainfall, our soils are wet and, in many cases saturated. This means
very efficient, and proficient, rain-making storms with heavy rain
and flash flooding, ponding expected. In urban areas especially, the
rain rates and amounts could lead to life-threatening flooding
scenarios. Thus the Flash Flood Watch continued through midnight
tonight.

&&

.LONG TERM...
Sunday, our moisture across northern areas begins to slightly
decrease, but most of the area will continue with anomalously
moist PWs. As a result, thunderstorm chances will remain
throughout the day, with heavy rain and isolated flash flooding.
Some of the main forcing aloft will be lost, but it actually
seems pretty energetic in the atmosphere, especially southern
portions, so lift may be ample enough for decent storm coverage.

Heading into the early to middle portions of next week, we have a
trough just clipping NE areas of the CWA, with perhaps an
associated weak sfc convergent zone swinging through. May be the
focus for isolated storm coverage Monday evening into the
overnight hrs, but prior, area mountains will be favored,
especially the Gila. Moisture decreases a bit, but still
remaining in the 1.3" range for PW during the afternoon, and
increasing into the overnight. Tuesday and Wednesday seem a lot
more typical monsoonal on the ECM and CMC, with the GFS a bit more
scattered potential across the lowlands. Not the easiest upper
level pattern to discern during the later portions of next week
as a few very small scale features emerge to impact thunderstorm
coverage, so for now thinking scattered mtns and iso lowlands, but
if some of these features push west into the Borderland, the
coverage could increase. Temperatures will remain in the 85 to 92
degree range most of the long term period with light to mildly
breezy winds outside of thunderstorm outflow.

&&

.FIRE WEATHER...
Fire weather concerns are next to nil across the region given the
deep atmospheric moisture, high low-level relative humidity
values, abundant expected cloud cover, much cooler than normal
temperatures, and widespread wetting rains expected through the
weekend.

On the other hand, heavy rain and flash flooding will be a concern
for anyone out in the field and without a source for current weather
situational awareness. Flooding of creeks, arroyos, washes is
possible and may cut off travel routes, or threaten personal safety.
In addition, heavy rain over any sensitive burn scar is likely to
produce heavy runoff and debris flows.

Moisture levels do wain a bit for much of the workweek ahead, but we
never completely dry out so, although with lesser coverage, we do
expect at least isolated to scattered showers and storm much of the
week. Temperatures will warm, and Rh will drop, but still be well
above critical thresholds.  Models suggest a return of deeper
monsoon moisture by the end of the week and next weekend, with an
associated increase in storm and rain coverage.

&&

&&

.PRELIMINARY POINT TEMPS/POPS...
El Paso                 78  66  81  67 /  70  70  60  20
Sierra Blanca           75  61  75  61 /  60  50  70  20
Las Cruces              76  63  81  63 /  70  70  60  20
Alamogordo              77  62  81  63 /  80  60  60  20
Cloudcroft              57  46  60  46 / 100  80  70  20
Truth or Consequences   79  62  81  63 /  70  60  50  20
Silver City             73  58  75  58 /  70  70  60  30
Deming                  78  63  81  63 /  70  70  60  30
Lordsburg               81  65  80  63 /  70  60  60  30
West El Paso Metro      79  67  82  68 /  70  70  60  20
Dell City               77  63  79  63 /  60  50  60  20
Fort Hancock            82  66  83  66 /  60  60  60  20
Loma Linda              71  61  73  61 /  70  70  70  20
Fabens                  78  67  81  66 /  70  60  60  20
Santa Teresa            77  65  80  65 /  70  70  60  20
White Sands HQ          75  65  80  65 /  80  70  70  20
Jornada Range           74  63  78  63 /  70  60  60  20
Hatch                   75  63  79  63 /  70  60  60  20
Columbus                78  65  79  65 /  70  70  60  30
Orogrande               75  63  79  63 /  80  60  60  20
Mayhill                 62  53  71  53 /  90  70  70  20
Mescalero               64  51  71  51 /  90  70  70  20
Timberon                62  51  67  50 /  90  70  80  20
Winston                 73  53  76  53 /  70  60  50  20
Hillsboro               74  60  78  59 /  80  70  60  20
Spaceport               76  62  80  62 /  70  60  50  20
Lake Roberts            77  54  77  53 /  70  60  60  20
Hurley                  76  59  78  58 /  70  70  60  30
Cliff                   82  59  83  59 /  60  60  50  30
Mule Creek              81  60  78  57 /  60  50  50  30
Faywood                 73  60  76  59 /  70  70  60  30
Animas                  80  62  79  62 /  70  70  60  40
Hachita                 80  62  77  62 /  70  70  60  30
Antelope Wells          80  63  79  63 /  70  70  70  50
Cloverdale              76  60  75  60 /  70  70  70  50

&&

.EPZ WATCHES/WARNINGS/ADVISORIES...
NM...Flash Flood Watch through this evening for NMZ401>417.

TX...Flash Flood Watch through this evening for TXZ418>424.

&&

14-Bird/35/14

In the hours before

Local storm report, Aug 14, 7:08 AM MST, 3 hours 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EL PASO TX/SANTA TERESA NM
808 AM MDT SAT AUG 14 2021

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

0807 AM     HEAVY RAIN       1 NE ALAMOGORDO         32.90N 105.94W
08/14/2021  E3.50 INCH       OTERO              NM   TRAINED SPOTTER

            ABOUT 3.5 INCHES OF RAIN IN 1 HOUR.

&&

JD

The radar

The El Paso radar (KEPZ), 10 km away, was scanning. The volume nearest the first event began at 17:15 UTC.

Open the radar archive at this moment

Event by event

1 flash flood. Local standard time, as filed.

Flash Flood, El Paso

When
August 14, 10:15 AM MST to 12:00 PM MST
Where
El Paso County, 0.69 mi WNW of Canutillo to 0.59 mi SSW of Canutillo
Cause
Heavy Rain
Reported by
Broadcast Media
Coordinates
31.925, -106.610

Multiple reports of flash flooding in Canutillo due to 5 to 7 inches of rainfall in the region over the previous days. A stalled vehicle needed to be rescued near the Family Dollar on Doniphan Drive. Texas Highway 20 was closed again due to water and debris across the road.

What these are

Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

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

The same day elsewhere

More

Every storm in Texas in 2021Every state in 2021This day in weather historyWarnings in Texas, August 2021

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: 983698.