A broad area of low pressure collocated with a stalled surface boundary along the coast provided multiple rounds of showers and thunderstorms over South Texas, with greatest rainfall and flooding reports over the Coastal Bend. Rainfall amounts were observed over 8 for the event with multiple roads flooded in the Aransas Pass area.
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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.
The episode as NWS CRP wrote it up.
A broad area of low pressure collocated with a stalled surface boundary along the coast provided multiple rounds of showers and thunderstorms over South Texas, with greatest rainfall and flooding reports over the Coastal Bend. Rainfall amounts were observed over 8 for the event with multiple roads flooded in the Aransas Pass area.
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 Corpus Christi, TX wrote its last area forecast discussion before the first event at Sep 4, 5:33 AM CST, 1 hour 46 minutes earlier.
Area Forecast Discussion
National Weather Service Corpus Christi TX
633 AM CDT Wed Sep 4 2024
...New AVIATION...
.SHORT TERM...
(Today through Thursday)
Issued at 304 AM CDT Wed Sep 4 2024
Key Messages:
- High chances (65-95%) for showers and storms continue today
- Marginal Risk (Level 1 of 4) of excessive rainfall for today
High rain chances (65-95%) will continue today as PWAT values remain
between 2.4-2.7" along with areas of vorticity associated with a mid
level low pressure north of the area rotate through the region. As
that low pressure moves northward tonight, rain chances will drop to
35-60% inland and 60-80% along the Coastal Bend. The relief from the
rain though will be short lived as rain chances increase once again
Thursday to 45-80% as showers and storms develop ahead of an
approaching weak cold front. With more rainfall expected tonight and
already saturated soils, WPC has maintained a Marginal Risk (level 1
of 4) of excessive rainfall for the southern Brush Country, southern
Coastal Plains and the Coastal Bend denoting a 5-14% chance of flash
flooding across those areas. Therefore, our Flood Watch will
continue through Wednesday evening. Near normal temperatures are
expected to continue through Thursday with heat index values peaking
in the 100-106 degree range.
&&
.LONG TERM...
(Thursday night through next Tuesday)
Issued at 304 AM CDT Wed Sep 4 2024
Key Messages:
- Medium chance of showers and thunderstorms continues Friday, then
decreasing through the weekend.
- Moderate to high risk of rip currents and minor coastal
flooding through the weekend and into next week.
- A minor to moderate risk of heat related impacts across South
Texas continues Thursday and Friday.
A medium (20-60%) chance of showers and thunderstorms will continue
on Friday with the greatest chances across the southern Coastal
Plains and along the coast. Much like the previous forecast,
models are still struggling with the southern extent of a frontal
boundary approaching the area but expect it will reach into South
Texas before it stalls. Rain chances over the weekend will depend
on where this front stalls--if the front stalls in the middle of
the CWA, rain chances will be higher. If it stall near the coast,
rain chances will be lower. Fortunately for those of us who are
already a bit soggy, models are trending towards the more coastal
solution, so have trended the PoPs down a bit, with 25-50% along
the coast by Saturday and 10-30% chances Sunday and Monday.
False fall is here! Cooler temperatures are still expected through
the weekend and into the middle of next week with high temperatures
generally in the mid 80s to low 90s. These lower temperatures
combined with the drier air should lead to, dare I say?, pleasant
temperatures this week!
A persistent northeast flow that is forecast to strengthen across
the gulf waters, will likely (60-70% confidence) lead to a
moderate/high rip current risk as well as minor coastal flooding
during times of high tide over the weekend into early next week.
&&
.AVIATION...
(12Z TAFS)
Issued at 622 AM CDT Wed Sep 4 2024
MVFR conditions are expected to continue this morning before
improving to VFR late this morning into this afternoon. Showers
will impact all sites this morning with CRP and ALI expected to
have the best rain chances. Went with VCSH and VCTS for this
afternoon through this evening due to the uncertainty on where the
showers and storms will develop and persist. While VFR conditions
are expected this afternoon, MVFR conditions can be experienced
in and around the heaviest thunderstorms.
&&
.MARINE...
Issued at 304 AM CDT Wed Sep 4 2024
Weak to moderate northeast flow will continue today increasing to
moderate to strong levels tonight into Thursday. Rain chances will
remain high (85-95%) today through Thursday. East to northeast
winds will strengthen through the end of the week with Small Craft
Advisory conditions expected by the weekend. The chance for
showers and thunderstorms will remain high, 60-80%, Friday, then
begin to decrease over the weekend with a low to medium, 20-50%,
chance by Sunday and Monday.
&&
.PRELIMINARY POINT TEMPS/POPS...
Corpus Christi 88 75 89 75 / 90 70 70 50
Victoria 90 74 89 73 / 60 40 70 30
Laredo 89 75 92 75 / 80 60 60 40
Alice 88 74 91 74 / 90 60 70 40
Rockport 85 77 91 76 / 90 60 70 60
Cotulla 89 75 94 75 / 80 30 40 20
Kingsville 90 75 90 75 / 90 60 70 50
Navy Corpus 88 78 89 78 / 100 70 80 70
&&
.CRP WATCHES/WARNINGS/ADVISORIES...
TX...Flood Watch through this evening for TXZ229-230-234-239>247-
342>347-442-443-447.
GM...None.
&&
SHORT TERM...JCP
LONG TERM....LS
AVIATION...JCP/84The Corpus Christi radar (KCRP), 39 km away, was scanning. The volume nearest the first event began at 13:18 UTC.
1 flash flood. Local standard time, as filed.
Social media posts show several streets flooded in the Aransas Pass area during the morning of the 4th after nearby report rainfall totals around 8.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2024Every state in 2024This day in weather historyWarnings in Texas, September 2024
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: 1217862.